How many grams of nitrogen can we get from 2.5 moles

The answer to your question is 35.03 g

Explanation:

Data

mass of nitrogen = ?

moles of nitrogen = 2.5

Process

1.- Look for the atomic mass of nitrogen (look for in the periodic table)

Atomic mass = 14.01 g

2.- Use proportions to solve this problem. remember that the atomic mass is equal to one mol.

                         14.01 g of Nitrogen 1 mol

                            x                             2.5 moles

                            x = (2.5 x 14.01) / 1

                           x = 35.03 g of Nitrogen

a:

by the combination of an unlimited number of elements

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.