» 12. A cylinder contains 12.0 L of N2 gas at a total pressure of 45.2 psi and a temperature of 25 °C. How
many grams of nitrogen gas does the cylinder contain?

What are the resulting coefficients when you balance the chemical equation for the combustion of ethane, c2h6? in this reaction, ethane is burned in the presence of oxygen (o2) to form carbon dioxide (co2) and water (h2o). (g)+(g)→(g)+(g)

What layer of the atmosphere is directly above the troposphere?

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol