An unknown metal is dropped into 127 grams of water. The temperature of the water has been raised from 25 degrees C to 28 degrees C. Using the specific heat of water, determine the amount of heat gained by the water.

Which of the following increases the rate of a chemical reaction? A. Increasing the number of different elements involved in the reaction B. Increasing the temperature of the materials reacting C.

Which isotope has the greatest number of protons? A Pa-238 B U-240 C Np-238 D Pu-239

How many electrons in an atom can share the quantum numbers n=3, l=2, and ml=2? A.) 2 B.) 6 C.) 4 D.) 8

What is the second most abundant isotope of oxygen

HNO3 is a strong acid. Calculate the pH of an aqueous 0.60 M solution.

A student records the value 1.5 atm on a data table. The student is measuring what?

How do you percipitate things from solution to telluric acid?

The energy needed to get a reaction started is the a. enzyme energy. b. activation energy. c. catalyst energy. d. chemical energy.

A solution is made by dissolving 8.2 g of NaOH in approximately 450 mL of water in a volumetric flask. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to total 500 mL of solution.

What is the molarity of an aqueous solution containing 40.0 g of glucose (C6H12O6) in 1.5 L of solution?