Multiple Choice
What is the molar mass of copper (Cu)?
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2. Atoms & Elements
Calculating Molar Mass
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How many chlorine atoms are present in 29 molecules of chloroform (CHCl_3)?
A
29
B
87
C
58
D
116
Verified step by step guidance1
Identify the chemical formula of chloroform, which is CHCl\_3. This means each molecule contains 1 carbon atom, 1 hydrogen atom, and 3 chlorine atoms.
Determine the number of chlorine atoms per molecule. Since the formula shows 3 chlorine atoms (Cl\_3), each molecule has 3 chlorine atoms.
Multiply the number of molecules by the number of chlorine atoms per molecule to find the total chlorine atoms: Total chlorine atoms = Number of molecules \times Chlorine atoms per molecule.
Substitute the given values into the equation: Total chlorine atoms = 29 \times 3.
Calculate the product to find the total number of chlorine atoms in 29 molecules of chloroform.
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