What volume will 1.27 moles of helium gas occupy at stp

Individuals who share a common cultural background and a common sense of identity are known as an ethnic group. 1) True 2) False

The state of matter in which a material has a definite volume and a definite shape is the

Why do we study heat in a chemistry course?

Decreasing the particle size of the reactants in a chemical reaction will increase the rate of reaction by A) increasing the concentration of the reactants. B) increasing the surface area of the reactants. C) increasing the activation energy.

Who has the more atomic size between atom: Br & Si?

A sample of sodium reacts completely with 0.568 kg of chlorine, forming 936 g of sodium chloride. What mass of sodium reacted?

When do water molecule forms hydrogen bond with another water molecule which atoms are involved in the interation?

How are natural polymers and synthetic polymers similar? A) Both are made up of phosphates and organic bases B) Both serve important roles in producing amino acids C) Both are made up of monomers that are linked by covalent bonds

How can the solubility of a solution be increased? By increasing the temperature. By decreasing the temperature. By increasing the amount of solvent added. By decreasing the amount of solvent added.

Read the scenario. Ammonia is obtained from a reaction between nitrogen and hydrogen gases. The mole ratio between hydrogen gas and nitrogen gas is 3 to 1, and the mole ratio between ammonia and hydrogen gases is 2 to 3.