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

Answer: (D)

Verified step by step guidance

1. Identify the given information: the atomic weight of nitrogen is 14.0 grams per mole, and you have 2 moles of nitrogen atoms.
2. 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.
3. Use the formula to find the total mass: \(\text{Mass} = \text{number of moles} \times \text{atomic weight}\).
4. Substitute the known values into the formula: \(\text{Mass} = 2 \text{ moles} \times 14.0 \text{ g/mole}\).
5. 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).