If krypton is 30.00 how many grams are their?

Answer 1

If the molecular weight is 30 grams/mole, you need to know the number of moles to calculate the weight. If you have 1 mole, this will yield 30 grams of krypton.

Answer 2

It seems like there might be a mistake in your question. Krypton is a gas and its Atomic Mass is around 83.80 g/mol, not 30.00 g/mol. So, if you have 30.00 g of krypton, you would have approximately 0.358 moles of krypton.