The specific heat of liquid water is 4.184 j/g·? c. calculate the energy required to heat 10.0 g of water from 26.5? c to 83.7? c. 1. 572 j 2. 837 j 3. 2.39 * 103 j 4. none of these 5. 239 j

An aqueous solution of sodium thiosulfate releases heat when it crystallizes. What would happen when sodium thiosulfate crystals dissolve in water?

State the type of chemical bond between a hydrogen atom and the nitrogen atom in the molecule.

Estimate ΔG°rxn for the following reaction at 449.0 K. CH2O (g) + 2 H2 (g) → CH4 (g) + H2O (g) ΔH° = - 94.9 kJ; ΔS° = - 224.2 J/K

4. What two sets of units can be used to describe density? Why are they interchangeable? a. b. c.

Gravity is matter because it does not have mass and volume.

Part 2:Construct a graph of temperature versus time. Put temperature on the y-axis and time on the x-axis. Graph all three sets of data on the same graph. Use a different colored pencil for each test material.

Which of the following is not true of alloys? a. Alloys are made of two or more metals combined physically. b. The mixture of metals in an alloy is based upon the desired use. c. Alloys can be substitutional or interstitial. d.

Give two examples of any heritage tree that could be affected by environmental factors.

Which situation is an indication that a chemical change has occurred?

Which of the following statements is true of nuclear fusion? It involves the splitting of an atom's nucleus. It is the process currently used in most nuclear power plants. It is a very endothermic process.