Answer: b 29 percent
Explanation:
Answer:
B. 29 percent
Explanation:
hope this helps
What are the monomers of nucleus acids
Answer:
The term nucleic acid is the overall name for DNA and RNA.
Explanation:
They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base.
Answer:
Nucleotide
Explanation:
What results from the sharing of electron pairs between two atoms?
Answer:
the electrical attraction between large numbers of cations and anions. Results from the sharing of electron pairs between two atoms. ... A covalent bond in which the bonded atoms have an unequal attraction for the shared electrons.
Explanation:
n2+3H2=2NH3 finds equilibrium concentrates of N2-0.1M, H2=0.05M and NH3=0.001M what’s the Equilibrium constant Kc?
Four molecules of solid sodium react with one molecule of oxygen gas to yield 2 molecules of solid Sodium oxide.
Answer:
reaction?
Explanation:
4na + o2 → 2na2o
HELP ILL MARK U AS BRAINLIEST PLSSSSS
Planet Average Orbital Speed
Mercury 47.87 km/s
Venus 35.02 km/s
Earth ? km/s
Mars 24.077 km/s
Jupiter 13.07 km/s
Saturn 9.69 km/s
Uranus 6.81 km/s
Neptune 5.43 km/s
The table above shows the average orbital speed of each planet. The planets are listed in order of increasing distance from the Sun, with Mercury being the nearest and Neptune the farthest.
How does the Earth compare in orbital speed to the other planets?
A.
The Earth moves faster than the planets that are farther from the Sun.
B.
The Earth moves at the same speed as all the other planets
C.
The Earth moves at a slower speed than all the other planets.
D.
The Earth moves faster than the planets that are closer to the Sun.
The earth moves faster than the planets that have farther from the sun
Answer:
The Earth moves faster than the planets that are farther from the Sun.
Explanation:
Based on the data in the table, orbital speed decreases as distance from the Sun increases. Each planet, including Earth, moves slower than the planets that are closer to the Sun but faster than the planets that are farther from the Sun. Earth's average orbital speed (29.78 km/s) fits this pattern.
H2PO2- is polar.
True
False
Answer:
False
H2N2 is used in organic synthesis. This compound can exist as two distinct species, one that is polar and one that is nonpolar; but the H-H bond is said to be nonpolar.
When matter is heated, particles within the matter will.
A. speed up.
B. produce sounds.
C. change into different types of particles. D change colors.
What is the actual yield of a reaction?
A. The calculated amount of product
B. The fractional amount of product
C. The predicted amount of product
D. The measured amount of product
Explain why the surface of the tire melts.
Answer:
Why Heat Causes Tires to Expand and Blow Out
Explanation:
The air pressure in tires increases as the temperature goes up. ... Such a big difference it can cause a tire to pop. Even if it doesn't give out, over-inflation can cause a tire to prematurely wear and interfere with braking.
Propane reacts with elemental oxygen gas according to the unbalanced reaction, C3H8(g) + O2(g) → CO2(g) + H2O(l). What is the coefficient of the water, H2O(l), in the balanced reaction?
a
2
b
4
c
6
d
8
Answer:
b. 4
Explanation:
The reaction expression is given as:
C₃H₈ + O₂ → CO₂ + H₂O
To solve this problem, we employ a mathematical approach.
Now use coefficient a, b, c and d as the numbers that will balance the expression:
aC₃H₈ + bO₂ → cCO₂ + dH₂O
Conserving C: 3a = c
H: 8a = 2d
O: 2b = 2c + d
let a = 1, c = 3, d = 4 , b = 5
The balanced reaction expression is:
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Determine what ions are present when the following dissociates or ionizes in water. Include states of
matter.
KNO3
Cation:
Anion:
Cation is [tex]K[/tex] and anion is [tex]NO3[/tex] in the dissociates or ionizes in water.
What is molecule?A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions which satisfy this criterion.In quantum physics, organic chemistry, and biochemistry, the distinction from ions is dropped and molecule is often used when referring to polyatomic ions.
The simplest forces between atoms are those which arise as a result of electron transfer. A simple example is that of say sodium fluoride. The sodium atom has a nuclear charge of +11, with 2 electrons in the K shell, 8 in the L shell and 1 in the M shell. The fluorine atom has a nuclear charge of 9 with 2 electrons in the K shell and 7 in the L shell.
The pair of electrons are know as bonding pairs and the stable balance of attractive and repulsive forces between atoms.The covalent compounds do not contain electricity.The covalent compounds are having lower enthalpies of vaporization and fusion.The covalent compounds are easily catches fire and are more flammable than ionic compounds.
Therefore,Cation is [tex]K[/tex] and anion is [tex]NO3[/tex] in the dissociates or ionizes in water.
Learn more about molecule here:
https://brainly.com/question/19922822
#SPJ2
She collected 20 cm³ of oxygen. What volume of hydrogen could she also have collected at the same time?
Answer:
Assuming it was collected from the atmosphere it would be virtually nothing
Explanation:
hydrogen makes up 0.000055% of the atmosphere while oxygen makes up 23 percent. 20/400000 cm^3 of hydrogen
how is the process of neutralization reaction like the procesd of mixing white and black paints to get gray
Answer:
Acid neutralizes base to form salt and water while white colour neutralizes black colour to form grey colour.
Explanation:
Neutralization is simply the process whereby an acid and a base are mixed to produce salt and water. Now, this reaction also involves the mixing of the hydrogen ions of the acid and hydroxide ions of the base to form the salt and water. It is similar to mixing 2 paints to form another colour in that in the neutralization reaction 2 compounds are mixed to neutralize each other to form another compound while in mixing black and white to form grey the two colors are mixed together and thereby neutralized to form another colour which is grey.
List the 5 characteristics of a
physical change
Answer:
A physical change involves a change in physical properties. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density ( is this it )
Solid iron(III) oxide (Fe,O3) reacts with hydrogen gas (H) to form iron and
water.
Salanced Equation: 1 Fe,0+ 3 H2 → 2 Fe + 3 H,0
. How many grams of iron are produced when 450 grams of iron(ill) oxide are
reacted?
8. How many grams of water will be produced when 0.0155 moles of hydrogen
gas react completely with iron(III) oxide?
100 Points! PLZ HELP
Which statement best describes the model below?
Answer:
Option D
Explanation:
Because we know the relationship between no of moles and volume
Volume is directly proportional to no of molesSo if moles is increased volume would be increased too .Option D
An electric circuit has an expected current of 80 amps. An electrician measures the current in the circuit at 120 amps Which statement provides a possible explanation for this observation?
There is not enough electrical energy in the circuit.
The circuit has an extra resistor
There is not enough voltage in the circuit.
A resistor in the circuit is broken
If an electric circuit has an expected current of 80 amps. An electrician measures the current in the circuit at 120 amps, the statement that provides a possible explanation for this observation is that there is not enough voltage in the circuit.
The third option is correct.
What is an electrical circuit?An electrical circuit is described as a network consisting of a closed loop, giving a return path for the current.
It is a known fact that the electrical energy in any circuit is given by the product of the current and voltage and if the current is higher than expected it means that the voltage is not enough to keep the current at the expected level.
Learn more about electrical circuits at: https://brainly.com/question/19651288
#SPJ1
Answer: d
Explanation: i took the test
Complete the complex dimensional analysis problem to determine the price of one atom of aluminum. A 20cm x 20cm square of aluminum had a mass of 1.50g. A box of aluminum cost $1.29 and the area of foil in the box is 2.33 m^2. What is the cost of one atom of aluminum?
Answer:
$8.05
Explanation:
According to the following reaction, how many grams of sulfur trioxide will be formed upon the complete reaction of 31.6 grams of oxygen gas with excess sulfur dioxide? 2SO2 (g) + O2 (g) 2SO3 (g)
A small object has a mass of 82.2 grams. When completely immersed in a graduated cylinder with a water level of 25.0 mL, the object causes the water level to rise to 47.1 mL. What is the density of the object in g/mL? (Do not enter the units; only the numeric value.)
Answer:
3.72
Explanation:
Given data:
Mass of object = 82.2 g
Volume of water = 25.0 mL
Volume of water + object = 47.1 mL
Density of object = ?
Solution:
Volume of object:
Volume of object = (Volume of water + object) - Volume of water
Volume of object = 47.1 mL - 25.0 mL
Volume of object = 22.1 mL
Density of object:
d = 82.2 g/ 22.1 mL
d = 3.72 g/mL
Below are pictures of a coastline and a river. Which of the following changes to the Earth's surface can be caused by wind and water
Answer: tsunami no cap
Explanation:
HELP!
True or false: When there are zero lone pairs on the central atom, the shape is
symmetrical (assuming all of the bonds are the same).
Pollen
O sticks to the stigma
O contains female egg cells
O is produced by the pistil
is created by mitosis
Answer:
Yes! The above answer is correct.
Adding to it, your answer is option A.
Answer:
Sticks to the stigma
How many moles in 2.21 x10E24 atoms of aluminum
3.67 mol Al
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
2.21 × 10²⁴ atoms Al
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Set up: [tex]\displaystyle 2.21 \cdot 10^{24} \ atoms \ Al(\frac{1 \ mol \ Al}{6.022 \cdot 10^{23} \ atoms \ Al})[/tex]Divide: [tex]\displaystyle 3.66988 \ mol \ Al[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
3.66988 mol Al ≈ 3.67 mol Al
Help me pls ASAP thank you
answer is a very easy your welcome
When air pressure rapidly falls, what weather change usually occurs?
hope this helps
Explanation:
a prolong storm will occur
that's what I found
Rank the effective nuclear charge Z* experienced by a valence electron in each of these atoms:
atom Z* experienced by a valence electron.
An atom of sodium. (pick one)
An atom of chlorine. (pick one)
An atom of silicon. (pick one)
An atom of magnesium. (pick one)
Answer:
Si > Al > Mg > Na
Explanation:
In an atom, there is the positively charged particle' the proton, the negatively charged particle; the electron and neutral charged particle; the neutron. The effect of the proton on an atom that is the ability of these positive particles to attract the negative[valence electrons] particles is known as Effective nuclear charge.
[1]. Electron configuration of Silicon, Si = (1s²2s²2p⁶) 3s²3p².
The configuration part of Si in bracket is known as the inner electrons while the ones without brackets are the outer/valence electrons.
The total number of electrons = 14, the inner electrons= 10. Thus, effective nuclear charge = 14 - 10 = 4.
[2]. Electron configuration of Aluminum, Al = (1s²2s²2p⁶) 3s²3p¹.
The configuration part of Al in bracket is known as the inner electrons while the ones without brackets are the outer/valence electrons.
The total number of electrons = 13, the inner electrons= 10. Thus, effective nuclear charge = 13 - 10 = 3.
[3]. Electron configuration of Magnesium, Mg = (1s²2s²2p⁶) 3s²
The configuration part of Mg in bracket is known as the inner electrons while the ones without brackets are the outer/valence electrons.
The total number of electrons = 12, the inner electrons= 10. Thus, effective nuclear charge = 12 - 10 = 2.
[4]. Electron configuration of sodium, Na = (1s²2s²2p⁶) 3s¹.
The configuration part of Na in bracket is known as the inner electrons while the ones without brackets are the outer/valence electrons.
The total number of electrons = 11, the inner electrons= 10. Thus, effective nuclear charge = 11 - 10 = 1.
Are all glucose molecules chemically identical?
Answer:
starch: A soft white chemical made by all green plants. It’s a relatively long molecule made from linking together a lot of smaller, identical building blocks — all of them glucose, a simple sugar. Plants and animals use glucose as an energy source. Plants store that glucose, in the form of starch, as a reserve supply of energy.
Explanation:
pt: What type of reaction has occurred in the following equation?
2 Na,PO, + 3 CaCl, 6 NaCl + Caz(PO.)2
Answer:
Double replacement or double decomposition
Explanation:
In the reaction below, a double replacement or double decomposition has occurred.
2Na₃PO₄ + 3CaCl₂ → 6NaCl + Ca₃(PO₄)₂
This reaction occurs mainly between two ionic substances.
The reaction involves an actual exchange of partners to form new compounds. For example;
AB + CD → AD + CB
One of the following conditions below serves as the driving force for double replacement reactions:
Formation of an insoluble compound or precipitate. Formation of water or any other non-ionizing compound Liberation of a gaseous product.
How many atoms of iodine are in 12.75g of CaI2? Hint. How many Iodines are there in one CaI2 particle?
(Answer) atoms of I (4 SF)
Answer:
[tex]5.225x10^{22}atoms\ I[/tex]
Explanation:
Hello!
In this case, since 12.75 g of calcium iodide has the following number of moles (molar mass = 293.89 g/mol):
[tex]n_{CaI_2}=12.75gCaI_2*\frac{1molCaI_2}{293.89gCaI_2}=0.0434molCaI_2[/tex]
In such a way, since 1 mole of calcium iodide contains 2 moles of atoms of iodine, and one mole of atoms of iodine contains 6.022x10²³ atoms (Avogadro's number), we compute the resulting atoms as shown below:
[tex]atoms\ I=0.0434molCaI_2*\frac{2molI}{1molCaI_2} *\frac{6.022x10^{23}atoms\ I}{1molI} \\\\atoms\ I = 5.225x10^{22}atoms\ I[/tex]
Best regards!
