Final answer:
The mass of 42.5 moles of N2 is calculated by multiplying the number of moles by the molar mass of N2, which is 28.01 g/mol. This yields a result of 1190.425 grams, which is not present in the provided answer choices, suggesting there might be a typo or an error in the question or answers.
Step-by-step explanation:
The mass in grams of 42.5 moles of N2 can be calculated by using the molar mass of nitrogen. Molecular nitrogen (N2) has a molar mass of 28.01 g/mol. To find the mass in grams, you multiply the number of moles by the molar mass:
Mass = moles × molar mass = 42.5 moles × 28.01 g/mol
The calculation yields a mass of:
42.5 moles × 28.01 g/mol = 1190.425 grams
However, this result is not explicitly listed among the options provided. Therefore, we need to check if there is a typo in the question. Assuming no errors in the given molar mass or the calculation, proper rounding or adjusting for significant figures might provide a choice close to our calculated mass. If we consider significant figures and round the calculated mass to four digits, we get 1190 grams, which is still not in the provided choices.
Given that none of the options exactly match the calculated mass, this could be an error in the question or the listed answer choices. It is always a good practice to double-check calculations and the precision of the given options.