Which one of the following is a balanced equation? A. 2Ca (s) + O2 (g) → 2CaO (s) B. 6Ca (s) + 2O2 (g) → 6CaO (s) C. 4Ca (s) + O2 (g) → 2CaO (s) D. 6Ca (s) + 4O2 (g) → 2CaO (s)

Compute the specific heat capacity (in J / (kg*K) at constant volume of nitrogen (n_2) gas. The molar mass of N_2 is 28.014 g/mol.

How much of each gas is there in 100cm3 air?

Which type of galaxy has a central bar of stars instead of a rounded core? A. spiral B. irregular C. elliptical D. barred spiral

Why do neutral atoms form ions?

The rate of effusion of oxygen to an unknown gas is 1.49. what is the other gas?

Letti is having a problem in her experiment that she does not know how to solve. In order to move forward, Letti needs to be

How many ml of 2.50 m hno3 are needed to prepare a 75.0 ml of 1.00 m hno3?

The charge of the stable ion of P

A change in the properties of matter where chemical bonds are broken and new bonds are formed is a.) a chemical change b.) a physical change c.) an ionic change d.) a covalent change

Write a chemical equation for the chemical reaction in which calcium carbonate (CaCO3) produces calcium oxide (Cao) and carbon dioxide (CO2).