Which of the following is an anion?

A. O2-

B. Mg2+

C. Al3+

D. H

What initial temperature of the copper metal which equal to the temperature of the coffee? Mass of metal = 29.8801 g T i = 18.2 degree Celsius T f = 20.1 degree Celsius Specific heat 0.384 J/g degree Celsius

Under what conditions does an increase in temperature turn a nonspontaneous process into a spontaneous process? Choose one or more: a. ΔH 0 b. ΔH > 0, ΔS > 0 c. ΔH > 0, ΔS < 0 d.

Hydrogen bonds are A) individually strong, but collectively weak. B. individually stronger than a single covalent bond. C. individually weak, but collectively strong. D. individually stronger than a double covalent bond.

How does the troposphere protect the earth?

If 10.5 g copper chloride react with 12.4 g aluminum what is the limiting reactant

A student monitored the reaction rate of a 0.600M sucrose solution, at 25 oC, and determined that the reaction is first order with respect to sucrose. If at 25.0 oC it takes 3.33-hours for the concentration of the 0.600M solution to drop to 0.300M.

How many moles of argongas contain 7.52 x 1022 Ar atoms? A) 0.125 mol) 1.25 mol C) 0.0801 mol D) ON mol E) 0.0125 mol

Esterification is what type of reaction?

What is energy efficiency, and why is increasing it important?

Which gas will diffuse at a faster rate, CH4 with a molar mass of 16 g or SO2 with a molar mass of 64 g?