Multiple Choice
Which of the following statements is true about the molar mass of chlorine gas?
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2. Atoms & Elements
Calculating Molar Mass
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the mass, in grams, of 9.30 moles of SiH_4?
A
298 g
B
32.1 g
C
37.2 g
D
266 g
Verified step by step guidance1
Identify the chemical formula of the compound, which is SiH_4 (silane).
Calculate the molar mass of SiH_4 by adding the atomic masses of silicon (Si) and hydrogen (H). Use the atomic masses: Si = 28.09 g/mol and H = 1.008 g/mol.
Calculate the molar mass using the formula: \(\text{Molar mass of SiH}_4 = 28.09 + 4 \times 1.008\) g/mol.
Use the relationship between moles, molar mass, and mass: \(\text{Mass} = \text{Moles} \times \text{Molar mass}\).
Multiply the given moles (9.30 moles) by the molar mass of SiH_4 to find the mass in grams.
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