Water is a good solvent when A) the solute is hydrophobic. B) the solute is nonpolar. C) the solute is polar. D) the solvent is oil.

What are the products of the following combustion reaction? 2C2H2 (g) + 5O2 (g) → C4H2 (g) + H2O2 (g) + 4O2 (g) 4C (s) + 2H2O (g) + 4O2 (g) 4CO2 (g) + 2H2O (g) 4CO2 (g) + H2O (g) + 2O2 (g)

What would be the resulting molarity of a solution made by dissolving 17.8 grams of LiF in enough water to make a 915-milliliter solution? Show all of the work needed to solve this problem.

Which of the following is a reasonable ground-state electron configuration? 1s21p62d2 1s22s42p6 1s22s22p5 1s22s22d6

A compound contains 14.5 g of magnesium and 3.5 g of oxygen. What is the mass percent of oxygen in the compound?

Which balanced equation represents a single replacement reaction? (1) Mg + 2AgNO3 → Mg (NO3) 2 + 2Ag (2) 2Mg + O2 → 2MgO (3) MgCO3 → MgO + CO2 (4) MgCl2 + 2AgNO3 → 2AgCl + Mg (NO3) 2

For the reaction 2A (g) + B (g) → 2C (g), when the concentration of substance B in the reaction above is doubled, all other factors being held constant, it is found that the rate of the reaction remains unchanged.

What mass of zinc oxide would be produced by the thermal decomposition of 375 grams of zinc carbonate? 162 grams 44 grams 243 grams 250 grams

Which is usually associated with a faster reaction rate? A. shaking pepper into the reactants B. removing heat energy from the reactants C. using a highly concentrated solution in the reactants D.

Bacteria multiply by what?

Which headings best complete the chart? Walt made a study chart listing uses for two types of electromagnetic waves.