객관식
Which of the following statements is true about the molar mass of chlorine gas?
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2. Atoms & Elements
Calculating Molar Mass
객관식
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
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검증된 단계별 안내1
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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