Multiple Choice
What is the average mass of a single argon atom in grams?
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2. Atoms & Elements
Atomic Mass
Multiple Choice
If the atomic weight of nitrogen is 14.0, what is the mass of 2 moles of nitrogen atoms?
A
56.0 grams
B
14.0 grams
C
7.0 grams
D
28.0 grams
Verified step by step guidance1
Identify the given information: the atomic weight of nitrogen is 14.0 grams per mole, and you have 2 moles of nitrogen atoms.
Recall that the atomic weight (or atomic mass) represents the mass of one mole of atoms of an element, so 1 mole of nitrogen atoms has a mass of 14.0 grams.
Use the formula to find the total mass: \(\text{Mass} = \text{number of moles} \times \text{atomic weight}\).
Substitute the known values into the formula: \(\text{Mass} = 2 \text{ moles} \times 14.0 \text{ g/mole}\).
Calculate the product to find the total mass of 2 moles of nitrogen atoms (do not compute the final number here, just set up the calculation).
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