Which of the following has a mass of 10.0 g? a 2.02 mol Ne
b 0.119 mol Kr
C 1.25 mol He
d 0.400 mol Ar

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?

Which of the following would not diffuse through the plasma membrane by means of simple diffusion? 1 oxygen 2 glucose 3 a steroid hormone 4 a lipid soluble vitamin

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?