How many moles of H2 required to produce 0.50 moles of NH3​

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

What overall charge must all compounds have

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics