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max2010maxim [7]
3 years ago
6

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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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:

<em>N₂O₄ ⇄ 2NO₂</em>

The expression of the equilibrium constant (Keq):

Keq = [NO₂]²/[N₂O₄]

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7 0
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.

3 0
3 years ago
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