Question

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Specific Mass Conversions Quick Check
4 of 54 of 5 Items














Question
Use this chemical equation to answer the question.

A+2B→AB2


The molar mass of A
is 8 g/mol
. The molar mass of B
is 12 g/mol
. Which option shows the correct molar mass of AB2
?

(1 point)
Responses

20 g/mol

20 grams per mole

40 g/mol

40 grams per mole

64 g/mol

64 grams per mole

32 g/mol

32 grams per mole
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Answer 1

Molar mass = mass(A) + 2×mass(B) = 8 + 2(12) = 8 + 24 = 32 g/mol.

Answer: 32 g/mol.