Convert 27 moles of o into atoms 4.5 x 10^ -23 atoms 1.6 x 10^25 atoms 2.2 x 10^22 atoms 1.7 atoms

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

How many moles of al3+ ions are in 1.25 moles of al2o3

What is the percent composition of ca(oh)2? 37.7% ca, 53.0% o, and 10.3% h 45.5% ca, 38.2% o, and 16.3% h 54.0% ca, 43.0% o, and 2.7% h 64.7% ca, 27.0% o, and 8.3% h