How many moles are in 0.54 g of Al2O3

Which of the following materials is able to absorb large amounts of energy without changing temperature very much? A. air B. concrete C. water D. soil

How many atoms are in 0.625 moles of ge (atomic mass = 72.59 amu) ?

Is nitrogen an atom or an ion, why?

The process by which a solid is converted to a gas is called the process by which a solid is converted to a gas is called liquefaction. vaporization. sublimation. condensation.

given the following reaction: CuO (s) + H2 (g) to Cu (s) + H2O (g). If 250 L of hydrogen gas are used to reduce copper (II) oxide at STP, what mass of copper is to be expected?

An atom that contains 22 protons, 23 neutrons, and 22 electrons would have a mass of approximately

Compared with a ph of 7, a solution of ph 5 has what times/fraction of the hydrogen concentration?

Write a formulae equation to represent the combustion of carbon to form carbon dioxide and the thermal decomposition of magnesium carbonate

A5.00 liter ballon of gas at 25 degree Celsius is cool to 0 degrees Celsius. What is the volume (liters) of the ballon?

How much thermal energy (q) is required to heat 15.2 g of a metal (specific heat = 0.397 J/G) from 21.0 degrees C to 40.3 degree C