The hydrogen gas formed in a chemical reaction is collected over water at 30.0 ∘c at a total pressure of 734 mmhg. part a what is the partial pressure of the hydrogen gas collected in this way?

When a substance changes into a different substance what change has occured

Which substances are always produced in an acid-base neutralization reaction? check all that apply. check all that apply. a base a salt an acid water a gas?

If hydrogen temperature goes from 50 tp 75 degrees Celsius in 22g sample, how much heat was used? Give explanation! A. 15,730 J B. 23,595 J C. 7865 J D. 550 J

Is salt water a element

Humans are protected from some infection by specialized cells which produce chemicals that

Mass_mole relationship

What is the momentum of an 800-kg car | traveling at a velocity of 10 m/s? What is its momentum if it speeds up to 50 m/s?

How many grams of CuSO4 are there in 100.0 g of hydrate? How many moles?

Which student is determining the atomic mass of sodium?

Ionic compounds can conduct electricity when dissolved in water or melted, because a. the ions are free to move. b. they have no ions to contribute to the solution. c. the ions are fixed in place. d. they have shared electrons.