Which compound is a conjugate acid-base pair?

H2PO4 - and HPO42-

H3PO4 and HPO42-

H2PO4 - and PO43-

H3PO4 and PO43-

Calculate the molality of a solution formed by adding 26.0 g NaCl to 74.0 g of water at 10.0 °C. The density of this solution is 1.203 g/mL at 10.0 °C. The molar mass of NaCl = 58.44 g/mol and the molar mass of H2O = 18.02 g/mol.

How does the kinetic-molecular theory explain the following properties of liquids: (a) relatively high density, (b) ability to diffuse, and (c) ability to evaporate?

Five years ago, my grandfather was five times as old as I was. Three years from now, my grandfather will be three times as old as I will be. how old am I now?

C2h4 + O2 - CO2 + H2O If we start with 20 grams of CH4, how many moles of CO2 will form?

A substance is followed by the symbol (l) in a chemical equation. What does the symbol represent? A. The substance has the least molecules in the equation. B. The substance is in the liquid state. C. The substance is produced last in the reaction. D.

How can an atom be electrically neutral when it contains particles that are charged?

Is boiling water considered physical or chemical bond

Which of the following is the correct scientific notation for 0.000451 g? 4.5 x 10-3 4.5 x 10-5 4.51 x 10-4 45.1 x 10-4

A phase change from a solid to a gas is called what

What is hydrocarbon?