How many moles are in 1.23 X 1050 molecules of H2?

Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

Calculate the number of moles of ethane in 100 grams