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3 years ago

What is the formula of calculating density?

Chemistry

1 answer:

Salsk061 [2.6K]3 years ago

7 0

density = mass/volume

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3 years ago

Read 2 more answers

A liter of the gas mixture at equilibrium contains 0.0045 mol of N2O4 and 0.030 mol of NO2 at 10C. Write the expression for the

Alona [7]

Answer:

Keq = [NO₂]²/[N₂O₄] = 0.2.

Explanation:

For the gas mixture equilibrium:

N₂O₄ ⇄ 2NO₂

The expression of the equilibrium constant (Keq):

Keq = [NO₂]²/[N₂O₄]

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4 years ago

A compound is found to contain 9.224 % boron and 90.74 % chlorine by mass. To answer the question, enter the elements in the ord

motikmotik

Answer:

Empirical formula of a compound means that it provides simplest ratio of whole number.

Explanation:

QUESTION-1

Given,

Mass of boron and chlorine is 9.224% and 90.74%

Then, Boron- 9.224× $\frac{1}{10.811}$ =0.85 mol (Mass value of boron=10.811)

Chlorine- 90.74× $\frac{1}{35.453}$ =2.559 mol.(Mass value of chlorine=35.453)

By dividing the mole value with smallest number, then we will get-

Boron- $\frac{0.85}{0.68}$ =1

Chlorine- $\frac{2.559}{0.68}$ =3

The empirical formula of the compound is -BCl₃

QUESTION-2

BCl₃⇄B+ 3.Cl (Putting the actual mass number of boron and chlorine we will get-)

1×(10.811)+ 3×(35.453)=117.17g/mol

Molecular formula= $\frac{molar mass}{empirical formula}$

= $\frac{117.17}{117}$ ≈1

The molecular formula is same with the empirical formula.

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3 years ago