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tino4ka555 [31]
3 years ago
13

What is the formula mass of beryllium chloride , becl2?

Chemistry
1 answer:
Semmy [17]3 years ago
7 0
To determine the formula mass of beryllium chloride, BeCl₂, we start up with the basis of one mole first. 

Basis: 1 mole BeCl₂
To determine the molar mass of BeCl₂, we add up the mass of one mole of beryllium and two moles of chlorine. 

    1 mol Be = 9 g/mol 
     1 mol of Cl = 35.45 g/mol

Solving,
    molar mass of BeCl₂ = (1 mol Be)(9 g/mol) + (2 mols Cl)(35.45 g/mol)
             molar mass of BeCl₂ = 79.9 g

Then, we take into consideration that 1 mol is equal to 6.022 x 10²³ formula units. 
            formula mass BeCl₂ = (79.9 g/mol)(1 mol/6.022 x 10²³ formula units)
               formula mass of BeCl₂ = 1.33 x 10⁻²² g/formula unit

<em>Answer: 1.33 x 10⁻²² g/formula unit</em>
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The empirical formula for a compound composed of 0.0683 mol of carbon ( C ), 0.0341 mol of hydrogen ( H ), and 0.1024 mol of nitrogen ( N ) is  C_2HN_3.

<h3>What is the empirical formula?</h3>

An empirical formula tells us the relative ratios of different atoms in a compound.

Given data:

Moles of carbon = 0.0683 mol

Moles of hydrogen = 0.0341 mol

Moles of nitrogen = 0.1024 mol

Dividing each mole using the smallest number that is divided by 0.0341 moles.

We get:

Carbon= 2

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The empirical formula for a compound isC_2HN_3.

Learn more about empirical formula here:

brainly.com/question/14044066

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