What is the number of protons in the nucleus of an atom equivalent to?

a. number of neutrons

b. atomic number

c. mass number

d. atomic weight

Explain how using dimensional analysis could have prevented this crash

What is the proper solution to the following equation? Answer with correct significant figures. (23.1 + 5.61 + 1.008) * 7.6134 * 8.431 =

The volume of solution in a test tube is measured to be 0.0067 liter. Which digits in the measurement are significant figures?

It takes 42.0 min for the concentration of a reactant in a first-order reaction to drop from 0.45 m to 0.32 m at 25°c. how long will it take for the reaction to be 90% complete?

During mitosis, one cell creates: one identical cell two identical cells one non-identical cell two non-identical cells

How to tell the difference between ionic and covalent bonding?

The combustion of propane may be described by the chemical equation C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) How many grams of O2 (g) O2 (g) are needed to completely burn 83.3 g C3H8 (g) ?

Was the relationship among temperature, heat, and thermal energy?

What will most likely happen when a warmer air mass exists above a polar ice sheet? The temperature of the ice sheet will be lowered. Heat will be transferred from the air mass to the ice. The air mass will exert high pressure and rise upwards.

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?