Ethanol has a density of 0.79g/ml. if a sample has a mass of 10.2 g, what is its volume?

How many moles are contained in 5.6 l of h2 at stp

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.

The molar mass of cu is 63.55 g/mol. the number of grams of cu produced in this reaction is