Which term is defined as the sum of protons and neutrons in an atomic number?

a) charge number

b) mass number

c) atomic number

d) balance number

Zinc reacts with hydrochloric acid according to the reaction equation Zn (s) + 2 HCl (aq) ⟶ ZnCl2 (aq) + H 2 (g) How many milliliters of 5.00 M HCl (aq) are required to react with 8.05 g Zn (s)

2A1Cl3 + 3Na CO3→ Al2 (CO3) 3 + 6NaCl Name the first reactant: How many sodium atoms on the reactant side? How many Oxygen atoms on the product side?

You are on an alien planet where the names for substances and the units of measures are very unfamiliar. Nonetheless, you obtain 29 quibs of a substance called skvarnick.

Which best explains heating by convection? Air molecules touch the warm ground, heating them up. Warm air rises and takes heat with it; eventually it cools and sinks. Sunlight travels through space without the aid of fluids or solids.

If an object absords or reflects all of the light that hits it, the object is called

The label of a gas cylinder has come off in your laboratory. You know that only one species of gas is contained in the cylinder, but you do not know whether it is hydrogen, oxygen, or nitrogen.

Give two example of compound that decompose to give off oxgyen gas

How many moles of gas are contained in a rigid, sealed, 5 L container, at 1 atm of pressure and 22 oc?

What makes up rubbing alcohol?

What are the similarities and differences between protons and neutrons