Which hydrocarbon will provide more heat when allowed to react with oxygen? Hint: Use the heat of combustion data in the alkane properties table.

a. C 6 H 14

b. C 6 H 12

c. C 2 H 6

d. C 3 H 8

Which of the following would you expect to be ionic? A) Co B) H2O C) SO2 D) K2O E) O2

Iodine is a solid nonmetal. What is one property of iodine? A. conductivity B. dull appearance C. malleability D. ductility

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.

It takes 5.0 J of heat in increase the temp of a sample by 10 degrees Celcius. If the mass is doubled, how much heat in joules will it take to increase the temp by 10.0 degrees. a. 50.0 Jb. 5.0 Jc. 10.0 Jd. 15.0 J

What is combustion and how does it affect the carbon cycle?

Altering the pressure of a system can affect the rate of a chemical reaction. true false

What does ice cream melt on a hot day which type of thermal energy transfer does this melting represents

For which purpose do biochemists insert human genes into bacteria? to find a cure for the common cold to produce insulin for diabetics to kill resistant strains of bacteria to evolve certain species of bacteria

Cracks in rocks chemical or mechanical

A large boulder falls from an underwater ledge and crashes on the floor of the ocean. A pod of dolphins is 800 meters away. Determine how long it takes for the sound of the crash to reach the dolphins. A) 0.5 sec B) 0.3 sec C) 2.3 sec D) 1.9 sec