A chemist dissolves 660. mg of pure hydroiodic acid in enough water to make up 300. mL of solution. Calculate the pH of the solution.

Based on the nebular Theory, which of these is a step in the formation of a new planetary system? A) evaporation of water B) nuclear fission of gases C) repulsion of gaseous masses D) change of gases into liquids

In a chemical formula such as C6H12O6 and H2O, what do you call the little numbers below the normal line of text. subscript number, superscript numbers

3. How do scientists determine whether a chemical reaction releases or stores energy? A. Scientists can calculate the bond energies of the reactants and the products. B . Scientists compare the total bond energies of the reactants and the products.

A noncompetitive inhibitor. binds to the active site of an enzyme a. b. increases the rate of enzyme action alters the primary structure of the enzyme c. d. none of these

What is the mass of 531 ml of a liquid that has a density of 0.760 g/ml?

Why openness is important to the progress of science?

At a certain temperature the rate of this reaction is second order in NH4OH with a rate constant of 34.1 M^-1s^-1: Suppose a vessel contains NH4OH at a concentration of 0.100M.

If you go into the lab and dissolve 2.11 g of magnesium chloride in enough water to make 1500 ml of solution, what is the molarity of the resulting solution?

Which one of the following Acids is most likely to hurt you? Acid A: 1.0 M; Acid B: 0.0001M

Which statement accurately describes the atoms of a specific element? explain your answer in complete sentences. A. A Neon, Ne, atom contains 10 electrons outside the nucleus and 11 neutrons inside the nucleus. OR B.