Calculate the number of molecules in 210 grams of H2O

Consider four small molecules, A-D, which have the following binding affinities for a specific enzyme (these numbers are the equilibrium constants Kd for the dissociation of the enzyme/molecule complex).

How is the movement of particles in diffusion determined?

How much baking soda and vinegar do I need for 3.2 cups?

At constant volume, you cool a sealed, air-filled can, and the pressure reduces by half. which of the following happens?

A 39 liter SCUBA tank contains 310 grams of oxygen gas (O2, molar mass = 32.0 g/mol) at 19°C. Calculate the pressure in kiloPascals (kPa).

Student follow up The ionic equation for the reaction between zinc and sulfuric acid is. Zn (s) + 2H (aq) - - Zn" (aq) + H2 (g) a State what has been oxidised in this reaction. Explain your answer in terms of electrons.

What kind of group 1 atoms are the most reactive? a. Small atoms c. Atoms with the most electrons in the valence level b. Large atoms d. Atoms at the top of the periodic table

What does it mean when there are 2.3 x 10-4 moles?

Electric force is an A. attraction and repulsion between protons and electrons . B. attraction and repulsion between protons and neutrons. C. attraction and repulsion between neutrons and electrons.

A salt crystal has a mass of 0.18 mg. how many nacl formula units does it contain?