Which substance will most likely ionize when it is dissolved in water? HBr CaBr2 MgCl2 KCl

An atom of which element has the weakest attraction for electrons in a chemical bond? (1) polonium (3) selenium (2) sulfur (4) tellurium

If I leave 750 mL of 0.75 M sodium chloride solution uncovered on a windowsill and 150 mL of the solvent evaporates, what will the new concentration of the sodium chloride solution be? M1V1 = M2V2

Decreasing the temperature can change water vapor into liquid water. What other change might also accomplish this task? A. Increasing the temperature B. Decreasing the pressure C. Increasing the pressure

How much heavier is an alpha particle than an electron?

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d11 4p4?

What action could slow a chemical reaction rate? a. lowering the pressure b. raising the temperature c. increasing the concentration d. adding more of a substance to a mixture

Write the ratio as a fraction in lowest terms. compare in inches. 3 feet to 45 inches

A solution contains 4.10 moles of water, 1.00 moles of sucrose (C12H22O11), and 1.10 moles of glucose. Sucrose and glucose are nonvolatile. What is the mole fraction of water in this solution?

In which state of matter has least amount of kinetic energy A gas B liquid C plasma D solid

In the titration between potassium iodate and the sodium thiosulfate solution, if the titration is not performed immediately after the addition of the sulfuric acid, how would this likely affect the calculated concentration of your diluted sodium