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You are performing an experiment and produce an unidentified compound. You know it is composed of carbon, calcium, and oxygen but you do not know how many of each are present. You determine its relative formula mass is 100.1 g/mol. What is its molecular formula?

A. Ca2CO

B. CaCO3

C. Ca2C2O2

D. all of these

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Answer:

B. CaCO3

Explanation:

Answer via Educere/ Founder's Education

[tex]CaCO_3[/tex] has its relative formula mass is 100.1 g/mol. Thus, the second choice is the compound.

What is molecular mass?

The molar mass/molecular weight is actually the sum of the total mass in grams of the atoms present to make up a molecule per mole.

Given the relative formula mass = 100.1 g/mol

Unknown:

Molecular formula of the compound

Solution:

To identify this compound, let us find the molecular mass of the choices given.

The one that tallies with the number 100.1 g/mol is the solution:

For;

[tex]CaCO_3[/tex];

Atomic mass of Ca = 40.078

Atomic mass of C = 12

Atomic mass of O = 16x3

Insert the parameters and solve;

Relative molecular formula = 40.078 + 12 + 48 = 100.078

g/mol

So, the second choice is the compound.

Learn more about the molecular mass here:

https://brainly.com/question/14122402

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