If a penny (with the this volume. 39 cm^3) was made out of pure copper, what should its mass be?

A sample of hydrogen peroxide (H202) has 2.0 grams of hydrogen (H) and 32 grams of oxygen (O). What is the percent composition of hydrogen peroxide

If a combustion reaction is reversed, what needs to happen to the H value?

Which compound is an electrolyte? (1) C6H12O6 (3) CaCl2 (2) CH3OH (4) CCl4

Which of the following statements is true? A. A producer usually obtains food by hunting other organisms. B. Humans that prepare their own meals are producers. C. A producer must be a plant. D. Consumers depend upon producers for food.

A solution is prepared by mixing 3.44 mol of acetone with 1.45 mol of cyclohexane at 30°c. calculate the χacetone and χcyclohexane in the vapor above the solution. p°acetone = 229.5 torr and p°cyclohexane = 97.6 torr.

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What type of bond is formed when electrons are transferred from one atom to another

Nitrogen's lone pair electrons occupy what type of orbital in pyridine?

For an aqueous solution of sodium chloride (NaCl), determine the molarity of 4.15 L of a solution that contains 173 g of sodium chloride. Determine the volume of this solution that would contain 3.93 moles of sodium chloride.

How quickly would groundwater flow through rock high porosity and high permeability?