At STP, which sample contains the same number of molecules as 3.0 liters of hydrogen gas?

Suppose you fill a grass with ice cubes. When the ice cubes melt, is the glass still full?

An obese man was discovered in his air-conditioned hotel room sitting in a chair in front of the television. The air conditioner was set for 65 degrees Fahrenheit. When the coroner arrived, the man's body exhibited rigor in his upper body only.

If you have 400 grams of a substance that decays with a half-life of 14 days, then how much will you have after 56 days?

Calculate the molar mass of NH4NO3.

What is the atomic number of the element located in group 16

You start with 100 grams of zinc how many moles of hydrogen will be produced

What will an atom do if it has 1 to 3 valence electrons

What is milk best described as? solution, suspension, compound, or colloid?

In any chemical reaction, the quantities that are conserved are ... A. mass and moles. B. the number of molecules and the volumes. C. the number of moles and the volumes. D. mass and number of atoms.

How many neutrons does element X have if its atomic number is 39 and its mass number is 75?