Determine the sum ol the following measure-

ments to the correct number of signilicant

ligures.

1.55 cm + 0.235 cm + 3.4 cm

What is the Arrhenius definition of an acid? A substance that increases H3O + concentration when it is dissolved in water. A substance that increases OH - concentration when it is dissolved in water. A compound that donates protons.

If the diver were to ascend to the surface (where the pressure is 1.0 atm) while holding her breath, to what volume would the air in her lungs expand? (Assume constant temperature.)

A 3.00-l flask is filled with gaseous ammonia, nh3. the gas pressure measured at 15.0 ∘c is 2.15 atm. assuming ideal gas behavior, how many grams of ammonia are in the flask?

Determine the mass of oxygen in a 5.8 g sample of sodium bicarbonate (NaHCO3).

Na + O2 - - > Na2O This is a balanced equation True False

State the difference between sugar in water and pebbles in water

What is the molar mass of Sr?

When protons and neutrons join together to make a nucleus, energy is?

It is considered a DUI if the driver's Blood Alcohol Content level is at or above. 08.

How many electrons does nitrogen have in its outer energy level?