Which of the following BEST represents 3.0 moles of an element? Select one answer А 2.02 grams of H B 14 grams of N C 4 grams of He D 27 grams of Be

Question

asked Apr 19, 2022 150k views

1 Answer

Josh Thomas · Answer 1 · 2022-04-25T03:24:56+0000

Answer: D: Berylium, Be

Step-by-step explanation:

The atomic mass of Be is 9.0. This is also it's molar mass (9 grams/mole). 3 moles of Be would therefore be (3 moles)*(9 grams/mole) = 27 grams.

That's what D (27 g of Be) offers as an answer.