The atomic mass of an element is equal to the number of:

protons

protons plus neutrons

protons plus electrons

neutrons

Which describes two phases in dynamic equilibrium?

A fossilized bone contains about 65% of its original carbon-14. to the nearest hundred years, how old is the bone

Calculate the molarity of a solution containing 0.2 mol nh4br in exactly 200 ml solution

A small sack of sand has a density of 1.5g/cm^3 and a mass of 1500 g. how much space does the sand company occupy?

Gold is called king of metals

What two quantities are conserved in every chemical reaction? a. moles and mass c. volume and mass b. mass and atoms d. moles and atoms?

What two chemical mechanisms change pyruvate to acetyl-CoA in the pyruvate dehydrogenase complex? Group of answer choices a) Decarboxylation and condensation. b) Oxidation and decarboxylation. c) Condensation and dehydrogenation.

Which earth cycle does the suns energy drive

How many moles are in 10 grams of CaCl2?

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a subscript of 5 indicates five Cl atoms P5Cl because a subscript of 5 indicates five P atoms P5Cl3 because a subscript of