Using the equation

2H2+O2-->2H2O

If 19 g of oxygen reacts completely, how many grams of hydrogen must react with it?

Question options:

4.8

3.6

1.2

2.4

What two things must you specify when describing the velocity of an object

What does the word quantized mean when referring to an electron

A molecule is a group of atoms that are held together by

How can the system restore equilibrium when disturbed (forward or reverse)

Which structure of the respiratory system allows for gas exchange? alveoli pharynx nose trachea

What is unique about the way that transition metals form compounds? a. They don't form compounds c. They can form bonds with the electrons in the two outer-most shells b. They are the most reactive d. They can donate all of their electrons

What prompted rutherford to do the alpha particle scattering experiment?

How many moles of hydrogen would be required to produce 5.0 mol of water?

What is the biggest difference between an exothermic and endothermic process? A. The direction of energy flow. B. The amount of energy transferred. C. The type of energy being transferred. D. The speed with which energy is transferred.

The mass of 1 mol of chromium (atomic mass 51.996 amu) is