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Bess [88]
3 years ago
12

What is the percentage composition of each element in dinitrogen monoxide, N2O?

Chemistry
2 answers:
Kitty [74]3 years ago
4 0

The correct answer is C :)

Lana71 [14]3 years ago
4 0

<u>Answer:</u> The correct answer is Option c.

<u>Explanation:</u>

To calculate the percentage composition of an element in a compound, we use the formula:

\text{Mass percent of element}=\frac{\text{Mass of element in compound}}{\text{Mass of the compound}}\times 100

We are given:

Molar mass of N_2O = 44.013 g/mol

Mass of nitrogen in compound = [2\times 14.0067]=28.0134g/mol

Mass of oxygen in compound = 15.999 g/mol

By putting and calculating the mass percentages of nitrogen and oxygen, we get:

\text{Mass percent of nitrogen}=\frac{28.0134g/mol}{44.013g/mol}\times 100=63.64\%

\text{Mass percent of oxygen}=\frac{15.999g/mol}{44.013g/mol}\times 100=36.36\%

Hence, the correct answer is Option c.

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The carbon dioxide exhaled by astronauts can be removed from a spacecraft by reacting it with lithium hydroxide (LiOH). The reac
maks197457 [2]
Two astronauts would exhale about 40 moles of carbon dioxide daily.

Carbon dioxide reacts with lithium hydroxide in a 1 : 2 mole ratio. Set up a proportion:

 1 : 2 = 40 : x

Then, find x: <span>12=40x

</span> Cross multiply. x = 80 moles of LiOH per day for both astronauts
8 0
3 years ago
When a cold front passes, the air temperature should begin to rise true or false?
sleet_krkn [62]
False the opposite should happen!
7 0
3 years ago
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one part of dalton's atomic theory states: compounds are formed by combinations of atoms from two or more elements. is this stat
ANEK [815]

Answer:

The statement is considered to be true

Explanation:

The statement is true because when elements chemically combine, there are interactions between their valence electrons, causing the two elements to be bonded together to form what is known as a compound.

Compounds can only be formed from interactions between two or more elements. examples include:

Hydrogen + Oxygen = H2O (water)

Sodium + Chlorine = NaCl

Note that if atoms of the same element combine, what is formed is a molecule, not a compound. Some atoms usually do this to attain stability. examples include = O2 H2 and  N2. They are oxygen molecule, hydrogen molecule, and nitrogen molecule respectively.

Compounds are only formed when different elements combine to attain electronic stability.

4 0
3 years ago
Which will cause the value of the equilibrium constant to change? (2 points)
Sonbull [250]

answer

changing the temperature and increase in the pressure

Change in concentration, pressure, catalyst, inert gas addition, etc. have  no effect on concentration, pressure, catalyst, inert gas addition lead to a shift in equilibrium position .

4 0
3 years ago
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27. The density of nickel is 8.91 g/cm3. How large a cube, in cm3, would contain 2.00 x 10^24 atoms of nickel? Use dimensional a
jok3333 [9.3K]

Answer : The volume of the cube is, 21.88cm^3

Solution : Given,

Density of nickel = 8.91g/cm^3

Number of nickel atoms = 2\times 10^{24}

Molar mass of nickel = 58.7 g/mole

First we have to calculate the moles of nickel.

As, 6.022\times 10^{23} atoms form 1 mole of nickel

So, 2\times 10^{24} atoms form \frac{2\times 10^{24}}{6.022\times 10^{23}}=3.321 moles of nickel

The moles of nickel = 3.321 moles

Now we have to calculate the mass of nickel.

\text{ Mass of Ni}=\text{ Moles of Ni}\times \text{ Molar mass of Ni}

\text{ Mass of Ni}=(3.321moles)\times (58.7g/mole)=194.94g

The mass of nickel = 194.94 g

Now we have to calculate the volume of nickel.

Density=\frac{Mass}{Volume}

8.91g/cm^3=\frac{194.94g}{Volume}

Volume=21.88cm^3

Therefore, the volume of the cube is, 21.88cm^3

4 0
3 years ago
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