Em -Deducing the block of an element from an olectron configuration Some patterns of electron configuration are listed below. In each case, [G] stands for a noble-gas core and n, m, or o stand for integer numbers like 1, 2, 3 and so on. Think about the chemical elements made of atoms with an electron configuration that matches each pattern. In what block or blocks of the Periodic Table would these elements lie? Would they be metals, nonmetals, metalloids, some of each? Use your answers to these questions to complete the table. location of elements (check all that apply) electron configurationn of atoms blocks metals or nonmetals? metals nonmetals metaloids sap ad?f nonmetals metalods metals nonmetals 0 metaloids In

55.0 moles of iron (III) oxide can be produced.

What is iron ?

Iron is an element, represented by the symbol Fe, that is essential for life and is the most abundant metal on Earth. It is found in many minerals, including hematite, magnetite, limonite, and siderite. Iron is used to make steel, which is used in the construction of buildings, bridges, and other infrastructure.

It is also used to make cast iron and ferromagnetic alloys, which are used in aircraft engines and other machinery. Iron is also involved in several biochemical processes in the body, such as the production of hemoglobin, which helps transport oxygen to cells.

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A hydrocarbon known by the chemical formula C3H4, propane may burn when oxygen is present, a process known as combustion.

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Answer:

Organic Compound

Explanation:

The 3p subshell in the ground state of atomic xenon contains 6 electrons. The Xe : 4d¹⁰ 5s² 5p⁶ with 54.

The atomic number of the xenon  is 54. The ground state electron configuration is the electron arrangement around nucleus with stable and the lower energy level. The outer shell electron configuration of the xenon is 4d¹⁰ 5s² 5p⁶. The 3p is the lower energy as compared to the orbitals of the outer shell. According to this the electrons is the 6 electrons.

Thus, the electrons in the 3p subshell in the ground state of the atomic xenon is 6 electrons.

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The mass of 4.77g of ammonium chloride must be added to give a solution. This is calculate by using the concept of Henderson-Hasselbalch equation.

To solve we can use the concept based on the chemical equilibrium. The pH of solution is used to determine acidity and basicity of a solution. To determine the pH of an acidic buffer solution, given certain acid-base concentrations the concept used to solve this problem is based on the Henderson-Hasselbalch equation and calculation of molar mass on the basis of molarity.  The Henderson-Hasselbalch equation is as follows:

pH = pKa + log ([conjugate acid ] / [base])

The Henderson-Hasselbalch equation is used to the concentration of ammonium ion. Fraction of concentration of ammonia to that of concentration of ammonium ion is calculated using Henderson-Hasselbalch equation. Further, concentration of ammonia is substituted to calculate the concentration of ammonium chloride.

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SbCl5 is non polar in nature due to resultant dipole is zero. But SbCl3 is polar because the resultant dipole moment is finite.

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Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, in below given ways we can arrange the rocks from oldest to youngest.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

The law of deposition states that the freshest layers are at the surface and the longest are at the bottom. Throughout the canyon, distinct rock strata, for example the Coconino Limestone, are matched. According to the law of lateral continuity, these rock strata were originally united.

Therefore, in above way we can arrange the rocks from oldest to youngest.

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tin(II) chloride contamination levels in the initial groundwater sample

[tex]$2.4 \times 10^{\wedge}\{-4\}$ \\[/tex][tex]M Fe(II) or $1.3 \times 10^{\wedge}\{-2\} \mathrm{mg} \mathrm{Fe}(\mathrm{II}) / \mathrm{mL}$[/tex]

Titrating a sample of  solution is one method the U.S. Environmental Protection Agency (EPA) uses to test for chloride pollutants in water. Silver cations and any chloride anions in solution combine to form a dazzling white precipitate of silver chloride.

If an EPA chemist analyzes a 200 mL sample of groundwater that is known to contain tin(II) chloride, the result would be as follows: Sn (NO) + 2 AgNO, (aq) + 2 AgCl (aq) As soon as silver chloride starts to form, the chemist stops adding 37.0 mm of silver ritrate solution to the sample. After that, she weights the precipitate after washing and drying it. In all, she possesses 7.1 milligrams of silver chloride.

According with the stoichiometry of the reaction:

[tex]$6.9 \mathrm{mgAgCl}\left(\frac{1 \mathrm{mmol} \mathrm{AgCl}}{143.32 \mathrm{mgAgCl}}\right)\left(\frac{1 \mathrm{mmolFeCl}}{1 \mathrm{mmol} \mathrm{AgCl}}\right)\left(\frac{1 \mathrm{mmolFe}}{1 \mathrm{mmolFeCl}}\right)=0.048144 \mathrm{mmolFe}(\mathrm{II})$[/tex]

Now, we divide by the volume of the aliquo

[tex]$\frac{0.048144 \mathrm{mmolFe}(I I)}{200 \mathrm{mLsample}}=2.4 x 10^{-4} \mathrm{MFe}(I I)$[/tex]

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The empirical formula of a sample containing 36.76% iron, 21.11% Sulphur, and 42.13% oxygen is FeO₄S.

The empirical formula, which is the ratio of subscripts of the least whole number of the elements present in the formula, is the most straightforward formula for a compound. The molecular formula specifies the precise number of every type of atom that makes up a molecule. It is an empirical formula if it has been simplified.

Iron = 36.76 / 56 = 0.65 / smallest value (0.65) = 1

Oxygen = 42.13/ 16 = 2.633/ 0.65 = 4

Sulphur = 21.11/ 32 = 0.65/0.65 = 1

The empirical formula of FeO₄S contains one iron atom, four oxygen atoms and one Sulphur atom.

Hence, empirical formula is molecular formula with numeric ratios.

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The empirical formula of the given compound that is used to treat iron deficiency in people is [tex]Fe_{1} S_{1} O_{4}[/tex] .

If a percentage is provided, we will assume that the total mass is 100 grammes.

So, the mass of each element is equal to the percentage given.

Mass of Fe 36.76 g =

Mass of S 21.11 g

Mass of O= 42.13 g

Step 1: convert given masses into moles.

Moles of Fe = given mass of Fe/molar mass of Fe

=36.76 g / 56 g/mole

=0.65moles

Moles of S =Given mass of S / molar mass of S

=21.11g/32g/mole

=0.65moles

Moles of O=Given mass of O / molar mass of O

=42.13g / 16g/mole

=2.63 moles

Step 2: Divide each mole value by the lowest calculated mole number to get the mole ratio.

For Fe = 0.65/ 0.65 = 1

For S = 0.65 / 0.65 = 1

For O = 2.63 / 0.65 = 4

The ratio of Fe: S: O=1:1:4

Hence the empirical formula is [tex]Fe_{1} S_{1} O_{4}[/tex]

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This base is weak; it is methylamine. Methylamine, CH3NH2, and ammonia, NH3, are chemically quite similar.

Because it may give up an electron pair, CH3NH2 C H 3 N H 2 is a base. It transforms into its conjugate acid when it gives up an electron and accepts a proton. The conjugate acid of CH3NH2 C H 3 N H 2 is CH3NH+3 C H 3 N H 3 + because it contains an additional hydrogen atom and an additional positive charge compared to its base. This makes CH3NH3+ a weak acid.

Because of CH3NH3+, a Bronsted acid, the salt is hence acidic. Moreover, the CH3NH3+ ion's name must be methyl ammonium ion. It belongs to the family of methylamines and is a primary aliphatic amine with one carbon. It is a base of methylammonium conjugated. The aqueous solution of methylamine appears as a colorless to yellow gas.

Therefore the correct answer is option D ) CH3NH2

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A bigger 12 ounces of something like the drink contains 159 calories, according to the provided statement.

Calories are the units of energy used by your body during food digestion and absorption. A meal might provide your body extra energy if it has more calories. Your body stores excess calories and body fat when you consume more nutrients than you need. Even foods without fat might have a number of fat.

The 106 calories per 8 ounces of a clean energy drink are advertised.

Consequently, 106/8 = 13.25

Thus 13.25 calories per ounce.

13.25 * 12 = 159

The drink has 159 calories per 12 ounces.

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The complete question is-

A new energy drink advertises 106 calories for 8 oz. How any calories are in 12 oz of the drink?

d subshell letter corresponds to a 4-leaf clover orbital pattern.

d subshell  is more complex than s subshell and p subshell. s subshell has only one orbital, meaning it can contain only 2 electrons. It is sphere shaped. p subshell has three orbitals, meaning it can contain 2x3 = 6 electrons. It is dum-bell shaped. Whereas, d subshell has 5 orbitals, meaning that it can contain 2x5 = 10 electrons. It is double dum-bell shaped, which can otherwise, be also called clover leaf shaped. The positioning of the orbitals depends upon the axis of approach, depending on which there can be the following types of orbitals : dx-y , dy-z , dz-x and dz2. Out of these, dx-y , dy-z, dz-x and dx2-y2 are clearly clover shaped. Each orbital can accommodate 2 electrons. Therefore, these 5 orbitals of d subshell can accommodate total 10 electrons.

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Answer:

acute propafol intoxication

Explanation:

acute propafol intoxication

As a result, the system's potential cell is 3.0223 volts.

The atomic number 12 and letter Mg serve as the symbol for the chemical element magnesium. It is a glossy, grey metal with a low melting point, high chemical reactivity, and a low density. It only naturally occurs in mixtures with other elements, just like the other alkaline earth metals, and it almost always has an oxidation state of +2.

Magnesium and Nutritional Health

• Magnesium-rich foods include whole grains and leafy vegetables in dark green hues. Additionally, yoghurt and low-fat milk also contain magnesium.

• Magnesium is found in dried beans and legumes including peanuts, baked beans, lentils, and soybeans as well as in nuts like almonds and cashews.

As a result, the following is the work's credit:

E_Cell^°=E_Cathode^°-E_Anode^°

=0.80-(-2.37)=3.17 volt

Cell reaction, Mg+2Ag+→2Ag+Mg_2+

E_Cell=E_Cell^°-n0.0591log⁡[Ag+]_2 Mg_2+

=3.17-20.0591log⁡[1×10_(-3) ]_2 0.2

=3.17-0.1566=3.0134volt

when mg2+=0.10M

E_Cell=E_Cell^°-20.0591log⁡[0.10×10_(-3) ]_2 0,1

=(3.17-0.1477)volt

=3.0223volt

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Dipeptide alanylvaline is an amino compound with peptide-peptide bond. It has the structure below.

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TTACGGAACCT would be the complementary strand in the DNA molecule of  AATGCCTTGGA because it depends on the pairs between nucleotides in the double helix.

The base pairing rule in the DNA sequence is indicated by the interaction between Adenine or A with Thymine or T, and Gunaine or G and Cytosine or C in the DNA.

Therefore, with this data, we can see that the base pairing rules in the DNA sequence is dictated by the interaction of the nucleotides in the double helix.

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The statement that is correct about impact craters and maars is that impact craters form over short periods of time, and maars form over long periods of time. So the correct option is B.

Maars are those volcanic craters that will form when the magma touches the water that will be in the underground area, producing an explosion formed by steam. It can be formed by one or more volcanic explosions that will release steam, water, ash, and magmatic material.

As for the impact crater, it is a depression that will be left on the surface of the planet given by the collapse of a planetary body. They're going to have raised edges and their floor will be lower, because it's going to be caused by this collapse instead of an internal explosion.

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²¹⁷₈₅At ⇒ ₂⁴ He + ₈₃²¹³Bi

²¹³₈₃Bi ⇒ ⁰e + ²¹³₃Po

Decay series the sequence of radioactive son nuclides that are formed by the radioactive decay of a parent nuclide to a final, stable son nuclide. For illustration, uranium has three naturally being isotopes, 238 U, 235 U, and 234 U, all of which are radioactive. Thorium exists substantially as one isotope( 232 Th) which is also radioactive.

In nuclear wisdom, the decay chain refers to a series of radioactive decays of different radioactive decay products as a successional series of metamorphoses. It's also known as a" radioactive waterfall". utmost radioisotopes don't decay directly to a stable state, but rather suffer a series of decays until ultimately a stable isotope is reached.

Decay stages are appertained to by their relationship to former or posterior stages. A parent isotope is one that undergoes decay to form a son isotope. One illustration of this is uranium (infinitesimal number 92) decaying into thorium (infinitesimal number 90). The son isotope may be stable, or it may decay to form a son isotope of its own. The son of a son isotope is occasionally called a granddaughter isotope.

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Electron-cloud model shows a many electrons system where the nucleus is surrounded by a cloud of electrons.

It shows a many electrons structure where the nucleus is nearby a cloud of electrons. He based it on Heisenberg's variability principle and quantum mechanics. It explains that there the electron has no required location however we can only give the around where the electron cloud would be most likely found.

The electron cloud has both kinetic energy and momentum, yet there is no motion. The cloud is superbly static. The electron does not "orbit" the proton at all – it surrounds it like a fog.

So we can conclude that an electron cloud is an area all over the nucleus of an atom where electrons are most likely to be found.

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Option A,  Ninhydrin is a chemical that is used to detect the presence of amino acids in a sample. It reacts with the amino acids in a sample, such as skin, to form a complex that is blue in color.

Ninhydrin is a chemical that is used to detect the presence of amino acids in a sample. It reacts with the amino acids in a sample, such as skin, to form a complex that is blue in color. This is because when Ninhydrin reacts with an amino acid it forms a complex with the nitrogen in the amino group, and this complex is blue in color. It is also commonly used in forensic science to detect fingerprints, as fingerprints contain amino acids from the oils and sweat on the skin. The blue coloration of the skin is an indication of the presence of amino acids, which are found in many biological molecules such as proteins and enzymes.

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The volume of 0.58 moles of H2 gas at STP is 14.13 liters.

The volume of a gas is directly proportional to the number of moles of the gas present, if the temperature and pressure are held constant.

STP stands for "standard temperature and pressure," which is defined as a temperature of 0 degrees Celsius (273.15 K) and a pressure of 1 atmosphere (101.325 kPa). Under these conditions, the volume of one mole of any gas is known as the molar volume and is equal to 24.45 L.

To calculate the volume of 0.58 moles of H2 gas at STP, we can use the equation:

Volume = molar volume x moles

Plugging in the values, we get:

Volume = 24.45 L x 0.58 moles = 14.13 L

So the volume of 0.58 moles of H2 gas at STP is 14.13 liters.

This is a result of the direct proportionality between the moles and the volume at STP.

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Answer:

13

Explanation: correct on acellus

Answer:
If this help please set brainly brainliest.

The mass number of an element is the sum of the number of protons and neutrons in the nucleus of an atom of that element. It is typically represented by the symbol A. For example, the mass number of carbon-12, which is one of the stable isotopes of carbon, is 12 because it has 6 protons and 6 neutrons in its nucleus. The atomic mass unit (AMU) is a unit of mass that is used to express the masses of atoms and molecules. It is defined as 1/12 the mass of a carbon-12 atom, which is approximately 1.66 x 10^-27 kilograms. Isotopes are atoms of the same element that have the same number of protons in their nuclei but a different number of neutrons. Because they have the same number of protons, they have the same atomic number and are therefore the same element. However, because they have a different number of neutrons, they have a different mass number and therefore a slightly different atomic mass. The atomic mass of an element is usually given as the average mass of all of its isotopes, taking into account their natural abundances.

Answer:

Decide on the size of the axes.

The -axis represents the time taken.

The -axis represents the distance travelled.

Draw each part of the journey in sections.

For each stage of the journey, plot the distance travelled against the time taken and draw the line segment.

Remember that any stop during the journey will be a horizontal line segment.

A return journey means the line segment is drawn going back towards the -axis.

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IF4+ is an ion with a tetrahedral shape and a hybridization of sp3. The ideal bond angle is 109.5 degrees and there is no deviation from this ideal angle. AsCl4- is an ion with an octahedral shape and a hybridization of sp3d2. The ideal bond angles are 90 degrees and there is deviation from this ideal angle, with angles less than 90 degrees.

The shape of a molecule is determined by the arrangement of its atoms in space and the number of electron pairs around the central atom. The hybridization of a molecule refers to the mixing of atomic orbitals to form new hybrid orbitals that are used for bonding. The bond angles in a molecule are determined by the repulsion between electron pairs, with ideal angles being based on the arrangement of the electron pairs. In the case of IF4+ and AsCl4-, the deviation from the ideal angles is a result of the presence of lone pairs of electrons, which change the angles due to their repulsion with bonding electrons.

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Answer:

0.626 grams (in 3sf)

Explanation:

Need to make use of the formula Moles = Mass/ Ar and Moles = Mass/ Mr twice to obtain the answer.

copper oxide is the same as copper(ii) oxide.

Oxidation state of oxygen in compounds is always -2 and hence oxidation state of Cu is +2.

Equation of the reaction:  2Cu(s) + O2(g) -> 2CuO(s)

Moles of copper = 0.50/63.5 moles

                             = 7.87 x 10^-3 moles

Since the question does not state any mass of oxygen, we assume that copper is the limiting reagent of the reaction and oxygen is hence used in excess.

From the equation, mole ratio of Copper : Copper Oxide is 2:2 which is the same as 1:1 .

Moles of copper oxide formed = Moles of Copper reacted

                                                     = 7.87 x 10^-3 moles

Mr of copper oxide = 63.5 + 16 = 79.5

Mass of copper oxide formed = 7.87 x 10^-3 x 79.5

                                                    = 0.62598 grams

                                                     = 0.626 grams (3sf)

The formula unit mass of ammonium sulphate [(NH₄)₂SO₄] is 132g/mol (option D).

Formula unit mass of a compound signifies the total sum of the atomic masses of all the atoms present in the given compound.

It is calculated by summing the atomic masses of each element that makes up a compound. According to this question, ammonium sulphate with the chemical formula; [(NH₄)₂SO₄] is given.

Since; N = 14, H = 1, S = 32, O = 16, the formula unit mass can be calculated as follows:

{14 + 1(4)}2 + 32 + 16(4)

36 + 32 + 64

= 132g/mol

Therefore, 132g/mol is the formula unit mass of ammonium sulphate.

The options to the incomplete question are as follows;

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False.

12 grams of carbon-12 constitutes 1 mole of carbon. 1 mole of any substance contains Avogadro number of particles.

A mole is a unit of measurement in chemistry.

one mole of something is equal to as many of that something as there are atoms in 12 grams of the isotope carbon-12.

Avogadro’s wide variety, the wide variety of gadgets in a single mole of any substance (described as its molecular weight in grams), is the same as 6.02214076 × 1023. The gadgets can be electrons, atoms, ions, or molecules, relying on the character of the substance and the individual of the reaction.

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Answer: False

Explanation: Did the exam

The IUPAC name for the following compound ch3(ch2)3ch(ch2ch2ch3)ch(ch3)2 is 4-isoproyloctane.

What is IUPAC ?

The International Union of Pure and Applied Chemistry (IUPAC) is the foremost expert on chemical vocabulary, nomenclature (including the naming of new elements in the periodic table), standardized measuring techniques, atomic weights, and many other critically analysed data.

What is compound ?

A compound in chemistry is a material that is created when two or more separate chemical elements are mixed in a specific order. The interaction of the elements creates chemical connections that are challenging to break. Shared or exchanged electrons between atoms cause the formation of these bonds.

The longest chain consists of eight carbon atoms, which means the root name of the compound is octane, and one isopropyl group is attached at the fourth position. Therefore, its IUPAC name is 4-isopropyloctane.

The naming of the compound is done on the basis of the rules of IUPAC nomenclature. There is only one isopropyl substituent present in the carbon chain at the fourth position, therefore, its IUPAC name is 4-isopropyloctane.

The concept used to solve this question is IUPAC nomenclature.

The name of the compound is determined by IUPAC nomenclature. IUPAC stands for international union of pure and applied chemistry. IUPAC has given a nomenclature to name organic compounds. The IUPAC name consists of three parts: root name, prefix, and suffix.

The three parts of an IUPAC name are root name, prefix, and suffix. The longest chain tells the root name. Prefix tells the position and name of the substitutions present on the longest chain. Suffix tells the functional group present in the structure.

The IUPAC nomenclature rules are as follows:

1) First, determine the longest carbon chain containing the functional group. In the case of alkene or alkyne, the double or triple bond must have the lowest possible number.

2) The parent name of the carbon chain is derived from the respective hydrocarbon, and the suffix ‘-ene’ is added for an alkene functional group and the suffix ‘-yne’ is added for an alkyne functional group

3) If there are different substituents, then their names are prefixed in the alphabetical order before the parent name.

Therefore, the IUPAC name for the following compound ch3(ch2)3ch(ch2ch2ch3)ch(ch3)2 is 4-isoproyloctane.

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The IUPAC name of the compound ch3(ch2)3ch(ch2ch2ch3)ch(ch3)2 is     4-isoproyloctane.

What is IUPAC nomenclature?

The name of the compound is determined by IUPAC nomenclature. International Union of Pure and Applied Chemistry is referred to as IUPAC. IUPAC has given a nomenclature to name organic compounds. The root name, prefix, and suffix are the three components of an IUPAC name. The longest chain tells the root name. The longest chain's prefix identifies the location and name of any substitutions. The suffix identifies the structural functional group.

The naming of the compound is done on the basis of the rules of IUPAC nomenclature. There is only one isopropyl substituent present in the carbon chain at the fourth position. The longest chain consists of eight carbon atoms, which means the root name of the compound is octane, and one isopropyl group is attached at the fourth position. Therefore, its IUPAC name is 4-isopropyloctane.

Hence, 4-isoproyloctane is the IUPAC name of the compound ch3(ch2)3ch(ch2ch2ch3)ch(ch3)2.

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In the water, the bases forms the hydroxide ions.  the bases are the substances which when dissolves in the water produces the hydroxide ions.

The bases are the substance which when dissolves in the water donates the hydroxide ions that is OH⁻ ions.  In the pH scale  the range above the 7 is called as the bases. The acids are the substance which when dissolves in the water produces the hydrogen ions that is H⁺ ions. The pH scale range of the acid are below 7. The pH 7 is for the neutral substances.

Thus, the bases dissociates in to the hydroxide ions when dissolves in to the water.

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The bases in water create hydroxide ions. The substances known as bases are what dissolve in water to produce hydroxide ions.

The bases are the substance that donates hydroxide ions, or OH- ions, when it dissolves in water. The pH scale's range above 7 is referred to as the bases range. The hydrogen ions, also known as H* ions, are created when the acids dissolve in water. The acid's pH scale range is below 7. The pH 7 is for substances that are neutral.

As a result, when the bases dissolve in water, they split apart into hydroxide ions

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The required half-life of the given radioactive isotope is 157.5 days.

The mass of radioactive isotope =21 g.

After 45 days,

mass of the isotope remain in the sample= 17.3 grams.

The half-life of the element is defined as the time span in which the element grows or decays half of its whole composition of growth and decay.

here,

equation of the radioactive decay is given as,

A = A'αⁿ

Now put

A = 17.3,

A' = 21

n = 45

so by putting the values in the equation we will get the answer as follows

17.3 = 21 α⁴⁵

[17.3/21]1/⁴⁵ = α

Again,

A = A'αⁿ

For half-life Put A = 21 / 2 = 10.5

10.5 = 21 [(17.3/21)¹/⁴⁵]ⁿ

[10.5/21]⁴⁵ = [17.3/21]ⁿ

taking log,

45 log[1/2] = n log[0.82]

45 × 3.5 = n

n = 157.5 days,

Thus, the required half-life of the given radioactive isotope is 157.5 days.

Your question is incomplete most probably your full question was

A sample originally contains 21 grams of a radioactive isotope. After 45 days, 17.3 grams of the isotope remain in the sample.

What is the half-life of the isotope?

Round your answer to the nearest day

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