객관식
What is the molar mass of HCl (hydrochloric acid)?
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2. Atoms & Elements
Calculating Molar Mass
객관식
Which of the following is the molar mass of chlorine gas (Cl_2)?
A
22.99 g/mol
B
70.90 g/mol
C
35.45 g/mol
D
44.01 g/mol
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검증된 단계별 안내1
Identify the chemical formula of chlorine gas, which is \(\mathrm{Cl}_2\), meaning it consists of two chlorine atoms bonded together.
Find the atomic mass of a single chlorine atom from the periodic table, which is approximately 35.45 g/mol.
Calculate the molar mass of chlorine gas by multiplying the atomic mass of chlorine by 2, since there are two chlorine atoms in \(\mathrm{Cl}_2\).
Write the formula for molar mass of chlorine gas as: \(\text{Molar mass of } \mathrm{Cl}_2 = 2 \times 35.45\ \mathrm{g/mol}\).
Perform the multiplication to find the molar mass of chlorine gas, which will give you the correct answer.
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