Multiple Choice
How many hydrogen atoms are in one formula unit of ammonium sulfate, (NH4)2SO4?
2. Atoms & Elements
Mole Concept
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How many moles of atoms are in 5.00 g of ¹³C?
A
0.500 moles
B
0.385 moles
C
0.615 moles
D
0.250 moles
Verified step by step guidance1
Identify the given information: You have 5.00 g of ¹³C (Carbon-13).
Determine the molar mass of ¹³C. Since the atomic mass of ¹³C is approximately 13 g/mol, use this value for calculations.
Use the formula to convert grams to moles: \( \text{moles} = \frac{\text{mass in grams}}{\text{molar mass}} \).
Substitute the given values into the formula: \( \text{moles} = \frac{5.00 \text{ g}}{13 \text{ g/mol}} \).
Calculate the result to find the number of moles of ¹³C atoms in 5.00 g.
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