1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.

You might be interested in
Which of the following is NOT a chemical reaction?
Damm [24]
Ice melting from water. Nothing has changed except the state of matter.
6 0
3 years ago
What is the percent by mass of aspartame in iced tea that has 0.75 g of aspartame in 250 g of water?
Vesnalui [34]

Answer:0.30%

Explanation:

6 0
3 years ago
Lithium and oxygen only exist in nature as Diatomic Molecules. True or False
ludmilkaskok [199]

Answer:

Explanation:

True

4 0
3 years ago
Since the half-life of 235U (7. 13 x 108 years) is less than that of 238U (4.51 x 109 years), the isotopic abundance of 235U has
Ymorist [56]

Answer:

\mathtt{ t_1-t_2= In(\dfrac{3}{y}) \times \dfrac{7.13 \times 10^8}{In2} \ years}

Explanation:

Given that:

The Half-life of ^{235}U = 7.13 \times 10^8 \ years is less than that of ^{238} U = 4.51 \times 10^9 \ years

Although we are not given any value about the present weight of ^{235}U.

So, consider the present weight in the percentage of ^{235}U to be  y%

Then, the time elapsed to get the present weight of ^{235}U = t_1

Therefore;

N_1 = N_o e^{-\lambda \ t_1}

here;

N_1 = Number of radioactive atoms relating to the weight of y of ^{235}U

Thus:

In( \dfrac{N_1}{N_o}) = - \lambda t_1

In( \dfrac{N_o}{N_1}) =  \lambda t_1 --- (1)

However, Suppose the time elapsed from the initial stage to arrive at the weight of the percentage of ^{235}U to be = t_2

Then:

In( \dfrac{N_o}{N_2}) =  \lambda t_2  ---- (2)

here;

N_2 =  Number of radioactive atoms of ^{235}U relating to 3.0 a/o weight

Now, equating  equation (1) and (2) together, we have:

In( \dfrac{N_o}{N_1}) -In( \dfrac{N_o}{N_2}) =  \lambda( t_1-t_2)

replacing the half-life of ^{235}U = 7.13 \times 10^8 \ years

In( \dfrac{N_2}{N_1})  = \dfrac{In 2}{7.13 \times 10^9}( t_1-t_2)      ( since \lambda = \dfrac{In 2}{t_{1/2}} )

∴

\mathtt{In(\dfrac{3}{y}) \times \dfrac{7.13 \times 10^8}{In2}= t_1-t_2}

The time elapsed signifies how long the isotopic abundance of 235U equal to 3.0 a/o

Thus, The time elapsed is  \mathtt{ t_1-t_2= In(\dfrac{3}{y}) \times \dfrac{7.13 \times 10^8}{In2} \ years}

8 0
3 years ago
What is thr valency of scadium
Hoochie [10]

scandium is a transition metal and shows a valency of 3.

4 0
3 years ago
Other questions:
  • The average radius of a molecule of lysozyme, an enzyme in tears, is 1.430 *10^-3 um. What is its radius in millimeter? Enter yo
    6·2 answers
  • How does the law of conservation of mass apply to this reaction C2H4 + O2 &gt; 2H2O + 2CO2
    12·2 answers
  • Container A holds 722 mL 722 mL of an ideal gas at 2.40 atm. 2.40 atm. Container B holds 169 mL 169 mL of a different ideal gas
    5·1 answer
  • How can global climate change be studied?
    13·1 answer
  • Which are examples of equilibrium? Check all that apply. Water drips out of a faucet and down a drain. A person's income and exp
    14·2 answers
  • If I have 0.275 moles of gas at a temperature of 75 K and a pressure of 1530 mmHg, what is the volume of the gas?
    12·1 answer
  • Which statement best describes how organisms demonstrate the transformation of energy?
    10·1 answer
  • How many litres of hydrogen is present in 12 grams of hydrogen​
    13·1 answer
  • A gas has a volume of 4.25 m3 at a temperature of 95.0°C and a pressure of 1.05 atm. What temperature will the gas have at a pre
    14·1 answer
  • Identify the class of the 8 organic compound below (alcohol, carboxylic acid, halocarbon, alcohol, ketone, ester, ether). Some w
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!