Answer:
:)
Explanation:
Property Nitrogen Bismuth
Atomic radius (pm) 56 143
First Ionization energy (kJ/mol) 1402 703
Common Oxidation state(s) -3 to +5 +3
Ionic radius (pm) 146(-3) 103(+3)
Answer:The nitrogen family includes the following compounds: nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). All Group 15 elements have the electron configuration ns2np3 in their outer shell, where n is equal to the principal quantum number. The nitrogen family is located in the p-block in Group 15, as shown below.
Periodic Trends
All Group 15 elements tend to follow the general periodic trends:
Electronegativity (the atom's ability of attracting electrons) decreases down the group.
Ionization energy (the amount of energy required to remove an electron from the atom in its gas phase) decreases down the group.
Atomic radii increase in size down the group.
Electron affinity (the ability of the atom to accept an electron) decreases down the group.
Melting point (amount of energy required to break bonds to change a solid phase substance to a liquid phase substance) increases down the group.
Boiling point (amount of energy required to break bonds to change a liquid phase substance to a gas) increases down the group.
Metallic character increases down the group.
Explanation:
An aqueous magnesium chloride solution is made by dissolving 5.54 moles of MgCl2 in sufficient water so that the final volume of the solution is 2.70 L . Calculate the molarity of the MgCl2 solution.
Answer:
poggers
Explanation:
The moles of MnO4- can be calculated by multiplying the volume of MnO4- required to reach the endpoint multiplied by the molarity of the MnO4- solution. What are the moles of MnO4- used in the titration?
Answer:
See explanation
Explanation:
The molarity of the KMnO4 solution= 0.0815 M
For the first trial;
number of moles = 30.44/1000 * 0.0815 = 2.48 * 10^-3 moles
For the second trial;
number of moles = 31.24/1000 * 0.0815 = 2.55 * 10^-3 moles
For the third trial;
number of moles = 31.89/1000 * 0.0815 = 2.6 * 10^-3 moles
The compound with the molecular formula C4H10 is called
Answer:
butane
Explanation:
I hope this helps!
Answer:
Butane
...............
3 Points
Vinegar is a mixture of about 5 g of acetic acid in every 95 g of water. Therefore, the acetic acid is the
solvent, and the water is the solute.
True or False?
The solubility of barium carbonate, BaCO3, is 0.0100 g/L. Its molar mass is 197.3 g/mol. What is the Ksp of barium carbonate
Answer:
Ksp = 2.58x10⁻⁹
Explanation:
The equilibrium that takes place is:
BaCO₃(s) ↔ Ba⁺² + CO₃⁻³Ksp = [Ba⁺²] [CO₃⁻³]The molar concentration of Ba⁺² at equilibrium is the solubility. The same can be said about CO₃⁻³:
Ksp = s * sKsp = s²So now we can calculate the Ksp from the solubility, after converting the solubility from g/L to mol/L:
0.0100 g BaCO₃/L ÷ 197.34 g/mol = 5.07x10⁻⁵ mol/LKsp = (5.07x10⁻⁵ mol/L)²
Ksp = 2.58x10⁻⁹d. How does the radius of a positive and negative ion compare to a neutral atom? (1 point)
Answer:
A positive ion has fewer electrons, and importantly, fewer electron shells (since atoms usually lose electrons until they get down to an empty outer shell.) This makes it smaller than a neutral atom of that element.
A negative ion has more electrons, and importantly, greater electron-electron repulsion in its outer shell. This makes it larger than a neutral atom of that element.
Writing Chemical Equations
Balance the equation for the reaction of dicarbon tetrahydride with oxygen gas to produce carbon dioxide and water.
Answer:
The prefix di means 2 and the prefix hexa means 6.
As per IUPAC rules you must use the prefixes to indicate the number of atoms of each element in the formula.
So, the proper name for the compound C2H6 is dicarbon hexahydride.
Explanation:
The balanced equation for the reaction of dicarbon tetrahydride with oxygen gas to produce carbon dioxide and water is [tex]\rm C_2H_4 + 3O_2 \rightarrow 2CO_2 + 2H_2O[/tex].
A reaction is a process that involves the transformation of one or more substances into one or more different substances.
The balanced chemical equation for the reaction between dicarbon tetrahydride ([tex]\rm C_2H_4[/tex]) and oxygen gas ([tex]\rm O_2[/tex]) to produce carbon dioxide ([tex]\rm CO_2[/tex]) and water ([tex]\rm H_2O[/tex]) is:
[tex]\rm C_2H_4 + 3O_2 \rightarrow 2CO_2 + 2H_2O[/tex]
In this reaction, two molecules of carbon dioxide and two molecules of water are produced for every molecule of dicarbon tetrahydride and three molecules of oxygen gas that react. The equation is balanced because the number of atoms of each element is the same on both sides of the equation.
Therefore, [tex]\rm C_2H_4 + 3O_2 \rightarrow 2CO_2 + 2H_2O[/tex] is the balanced chemical equation for the reaction of dicarbon tetrahydride with oxygen gas to produce carbon dioxide and water.
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which proccess do NOT build mountains
Answer:
its does not
Explanation:
not do...................
Is the potential energy of the roller coaster elastic or gravitational?
Question 8 options:
both
elastic
gravitational
neither
Answer:
gravitational
Explanation:
Hope this helps :)
When you are done using the glassware from a kit, what should you do?
a. Wipe down the glassware to remove any cleaning solvent.
b. Place the glassware on shelves with similar pieces.
c. Inspect glassware for cleanliness and defects.
d. Place glassware back in its original positions in the kit.
Answer:
A. Wipe down the glassware to remove any cleaning solvent.
Explanation:
· Remove stoppers and stopcocks when they are not in use. Otherwise, they may "freeze" in place. You can de-grease ground glass joints by wiping them with a lint-free towel soaked with ether or acetone. Wear gloves and avoid breathing the fumes. The deionized water rinse should form a smooth sheet when poured through clean glassware.
Glassware refer to any laboratory apparatus made of glass. When you are done using a glassware, wipe down the glassware to remove any cleaning solvent.
A lot of our laboratory apparatus are made of glass e.g beakers, conical flask, measuring cylinders etc. These glassware must be properly cleaned after use.
They are often washed with a solvent and particles of the cleaning solvent adheres to the glassware.
These particles of the solvent must be wiped to remove these particles of cleaning solvent that could contaminate a sample placed in the glassware.
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Gasoline is the common name for Octane which has the chemical formula of C8H12. How many carbon atoms are in three molecules of octane 3C8H18
Options:
A. 3
B. 24
C. 18
D. Impossible to determine with the information given.
E. 8
Answer:
D
Explanation:
Kelly is walking on the beach when she finds an interesting rock. She picks it up, examines it, and wonders what type of rock it is and how the rock was formed. What type of rock did Kelly find, and how you can tell? Describe how this type of rock is formed PLS ANSWER
Answer:
Sedimentary rock
Explanation:
Rocks found at the beach and near land surface are usually sedimentary rocks such as shale, sandstone, limestone, breccia e.t.c.
Now,these rocks are formed from the porosity destruction through compaction & cementation process of unconsolidated sediments by calcium carbonate cements in the tidal zone occurring primarily in the tropical and subtropical beaches. Various crystalline forms of Aragonite and calcite, are the primary agents of hardening and bonding of clastic sediments by the precipitation of mineral matter formed in the pore spaces.
The rock Kelly found on the beach has been sedimentary rock. The rocks have been formed by the series of events including melting, erosion, weathering, and compacting.
The rocks are the hard piece of matter that has compact structure. Rock has been of there types, namely igneous, metamorphic and sedimentary rocks.
The rocks that has been found near the seashore has been sedimentary rock as they have been formed with the erosion and the compacting of erode with the weather conditions resulting in the rock.
The rocks have been formed with the process of melting, eroding, compacting, and deformation. The rocks form has been interchangeable.
Melting and cooling of the metamorphic rock results in the formation of the igneous rock. The igneous rock has been weathered and sediment to form the sedimentation rock. The effect of heat and pressure over sedimentation rock turns it into metamorphic rock.
The rock Kelly found on the beach has been sedimentary rock. The rocks have been formed by the series of events including melting, erosion, weathering, and compacting.
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The solid on the copper square after the experiment is called copper acetate. Write a word equation to represent what happened to substances in the experiment. Label the reactants and products in the equation. Does acid rain make new substances? Construct an argument that uses data from this investigation as evidence for your claim.
Answer:
See explanation
Explanation:
The word equation for the formation of copper acetate is as follows;
copper + vinegar → copper II oxide → copper acetate
Copper and vinegar are reactants while the copper acetate is the product
Note that vinegar is a weak solution of acetic acid. Pure copper does not react with acetic acid (copper is less than hydrogen in the electrochemical series); however, a reactive oxide layer is formed upon exposure to air. This layer interacts with non-oxidizing acids to give green copper(II) compounds (DeMeo, 1997; Tétreault et al., 2003), a typical example of such compounds is the copper(II) acetate formed in the word equation above.
Acid rain forms new substances because it is capable of interacting chemically with surfaces. When substances are exposed to acid rain, they dissolve in water if they are soluble in acids to form new substances.
____ describes the quantity of solute that
can dissolve in a given amount of solvent at a
given temperature.
A. Viscosity
B. Solubility
C. Fluidity
D. Permeability
Answer:
B
Explanation:
2. What is an element?
Answer: the answer is c i looked it up please give me brainliest pleaseeee
Explanation:
Cultures are similar in their influences on an individual's emotion in which of the following ways?
labels for emotion
situational influences on emotion
cultural expectations concerning emotion
social gestures characterizing emotion
Answer:
pretty sure its B
Explanation:
Answer:
b :)
Explanation:
right on edge 2020
Compute the specific heat capacity at constant volume of nitrogen (N2) gas. The molar mass of N2 is 28.0 g/mol.
Answer:Specific heat capacity at Constant volume of Nitrogen =742.32JKg.K
Explanation:
The Specific heat capacity at Constant volume of an ideal gas is given as
c =Cv / M
Cv= Constant volue of gas
M= Molar mass
But First, we determine the Constant volume, Cv which is given as
Cv = 5/2R since Nitrogen is a diatomic gas, N2 where R= 8.314Jmol.k
= 5/2 x 8.314Jmol.K
=20.785Jmol.K
Specific heat capacity at Constant volume, c
c= Cv/M
M=molar mass = 28.0 g/mol.
changing to kg/mol =28/1000= 0.028kg/mol
Therefore c =20.785Jmol.K/0.028kg/mol
=742.32JKg.K
ASAP NEED HELP SCIENCE
Answer: I think the answer is A or D I'm not sure
Explanation:
What allows a variety of birds to exist together in ecosystems
Answer:
Birds have adapted to feed on different food sources.
Explanation:
Select ALL! the solutes below that would be soluble in a polar solvent (like water).
A. K2SO4
B. CO2
C. NH3
D. HOCI
E Cu
F. HCI
G. H2
H. CH20
I. SF2
J. CH3NH2
K. SiCl4
L. AgCl
Answer:
K2SO4, NH3, HOCI, HCI, CH3NH2, SiCl4, CO2, CH20
Explanation:
Substances are soluble in water when they are ionic or polar covalent substances.
If we look at the substances listed, K2SO4 is ionic while NH3, HOCI, HCI, CH3NH2, SiCl4, CO2, CH20 all contain polar covalent bonds which accounts for their water solubility.
Hence ionic and polar covalent substances are soluble in a polar solvent such as water.
What 2 ions can affect the pH
How much 5.80 M NaOH must be added to 550.0 mL of a buffer that is 0.0215 M acetic acid and 0.0255 M sodium acetate to raise the pH to 5.75
Answer:
1.64mL of 5.80M are added
Explanation:
First, we need to calculate total moles of acetic buffer. Then, with H-H equation, we need to find ratio of moles of acetate and acetic acid.
The moles of acetate increased are due the addition of moles of NaOH. Thus, we can find the volume of 5.80M NaOH that must be added:
Moles acetic acid and sodium acetate:
Acetic acid: 0.550L * (0.0215mol/L) = 0.011825 moles
Acetate: 0.550L * (0.0255mol/L) = 0.014025 moles
Total moles = 0.02585 moles = [Acetate] + [Acetic acid] (1)
H-H equation:
pH = pKa + log [Acetate] / [Acetic acid]
Where pH is 5.75;
pKa of acetic acid is 4.74;
And [ ] could be taken as moles of each species.
5.75 = 4.74 + log [Acetate] / [Acetic acid]
10.2329 = [Acetate] / [Acetic acid] (2)
Replacing (1) in (2):
10.2329 = 0.02585 - [Acetic acid] / [Acetic acid]
10.2329[Acetic acid] = 0.02585 - [Acetic acid]
11.2329[Acetic acid] = 0.02585
[Acetic acid] = 0.002301 moles.
Moles acetate:
[Acetate] = 0.02585 moles - 0.002301 moles = 0.023549 moles
Initial moles were 0.014025 moles, moles of acetate added (Due the addition of NaOH) are:
0.023549 moles - 0.014025 moles = 0.009524 moles of NaOH
Volume is:
0.009524 moles of NaOH * (1L / 5.80mol) = 1.64x10⁻³L = 1.64mL of 5.80M are added
A buffer solution is a solution consisting of a weak base and conjugate acid or vice versa. 1.64 mL of 5.80M NaOH must be added to increase pH.
What is volume?Volume is the space or the area is occupied by a substance. It is calculated in milliliters, liters, etc.
Moles of acetic acid: [tex]0.550 \times 0.0215 = 0.011825 \;\rm moles[/tex]
And, moles of acetate: [tex]0.550 \times 0.0255 = 0.014025 \;\rm moles[/tex]
Now, the total moles = 0.02585 moles (equation 1)
Using the pH equation the ratio of moles of acetate and acetic acid is calculated as:
[tex]\begin{aligned} \rm pH& =\rm pKa + log \dfrac{[Acetate]}{[Acetic \;acid]}\\\\5.75 &= 4.74 +\rm log\dfrac {[Acetate]}{[Acetic \;acid]}\\\\10.2329 &= \rm \dfrac{[Acetate]}{[Acetic \;acid]} \rm .....(equation 2) \end{aligned}[/tex]
Now replacing the value of equation 1 in 2:
[tex]\begin{aligned}10.2329 &= 0.02585 - \rm \dfrac{[Acetic acid]}{[Acetic \;acid]}\\\\10.2329[\rm Acetic \; acid] &= 0.02585 - [\rm Acetic \; acid]\\\\&= 0.002301 \;\rm moles\end{aligned}[/tex]
Moles of acetate is calculated as:
0.02585 moles - 0.002301 moles = 0.023549 moles
The added moles of sodium hydroxide are: 0.023549 moles - 0.014025 moles = 0.009524 moles
Volume is calculated as:
[tex]0.009524\; \text{moles of NaOH}\times (1 \;\rm L / 5.80 \;\rm mol) = 1.64 \times 10 ^{-3}\;\rm L[/tex]
Therefore, 1.64 mL of 5.80 M sodium hydroxide should be added.
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According to the graph, what
the correlation between temperature and solubilit
Answer:
You didnt put the graph
Which statement is true about the cell membrane? It allows an unlimited amount of water to enter. It stops waste substances from passing through. It is not selective about which gases enter or leave the cell. It is selective about which substances enter or leave the cell.
Answer:
It is selective about which substances enter or leave the cell.
Explanation:
Also srry for spamming u all the time.
UwU hope this helps tho
Answer:
It is selective about which substances enter or leave the cell
Explanation:
I have learned this already
The picture shows a scientist collecting data from an ice core whats the answer giving brainliest PLEASE HELP
Answer:
I’m going with her it c
Explanation:
Answer:
it maybe C
Explanation:
A student takes a container of pure water and then adds drink mix from a
shaker. The student adds one shake and then a second shake of drink mix
to the water. The three boxes below show a microscopic sample of the
water and then the solution as drink mix is added. Use these pictures to
answer the following questions.
Answer:
increases, the ratio of drink mix to water particles increases.
Explanation:
also took the test
Indigenous rocks form by the cooling and hardening of melted rock.* True False
Answer: True
Explanation: They are formed by the cooling and hardening of molten magma
What do plants do with most of the oxygen produced in photosynthesis? A They use most of the oxygen to make more glucose. B They release most of the oxygen into the atmosphere. C They release most of the oxygen into the soil. D They use most of the oxygen to produce carbon dioxide.
Answer:
B. they release most of the oxygen to the atmosphere
They release most of the oxygen into the atmosphere. Therefore, the correct option is option B among all the given options.
What is photosynthesis?Photosynthesis is a method that organisms like plants utilize to transform chemical energy into light that may then be released to power the organism's activities via cellular respiration. A portion of this chemical energy is held in carbohydrate molecules, including such sugar and starches, which are formed by the reaction of carbon dioxide and water.
Photosynthesis is performed by the majority of plants, algae, and cyanobacteria; these organisms are known as photoautotrophs. Photosynthesis is accountable for creating and maintaining the oxygen concentration of the Earth's atmosphere, as well as supplying the majority of the energy required for life on Earth. They release most of the oxygen into the atmosphere.
Therefore, the correct option is option B.
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Based on the balanced equation, if 60.1 grams of Nitrogen (N2) are used, how many grams of ammonia (NH3) is made?
3 H2 + 1 N2 ----> 2 NH3
Answer:
mass NH₃ produced = 72.9g (3 sig. figs.)
Explanation:
3H₂ + N₂ => 2NH₃
given excess 60.1g (?)grams
moles => (60.1g/28g/mol)
= 2.15mole => 2(2.15mole)
= 4.29mole NH₃
mass NH₃ = 4.29moles x 17 g/mole = 72.9grams NH₃
Always convert given data into moles, solve in terms of moles and convert to needed dimension from mole yields. :-)
Answer:
73.07 grams of ammonia is produced.
Explanation:
In order to find the grams of ammonia produced, we need to find the amount of the reactants so that we know how much product (ammonia) the reactants (Hydrogen and Nitrogen) can and will produce.
First, we need to use the balanced equation to find the amount of moles equivalent to the 60.1 grams of Nitrogen that reacts.
To convert from Grams to Moles, we will divide by the molar mass (amu)..
60.1 grams of N2 / 2(14.01) grams N2 = 2.144896502 moles of N2.
So, we know that 60.1 grams of N2 equals 2.144896502 moles.
Now, we will look at the balanced equation and convert from moles of N2 to moles of NH3 in order to later find the grams of NH3 (ammonia) produced..
2.144896502 moles N2 * 2 moles NH3/1 mol N2 = 4.289793004 moles NH3.
Now that we know the amount of moles produced of ammonia, we will convert to grams. We can do this by multiplying by the molar mass of ammonia which is 17.034 (N = 14.01, H = 1.008, ---> 14.01 +3(1.008) = 17.034)
4.289793004 moles NH3 * 17.034/1 mol = 73.07233403 grams NH3
This can be estimated to 73.07 grams of NH3 (ammonia) produced.
If you are still confused on how to convert between moles and grams, please see the uploaded image.
Plzzz helpp me fast hdhskekwkjdbdjewi
Answer:
none of the above
Explanation:
