Which of the following pairs of substances best illustrates the law of multiple proportions? A. H2 and O2 B. NO and NO2 C. P2O5 and PH3 D. CaCl2 and CaBr2 NO and NO2 best illustrates the law of multiple proportions.

Which of the following is using primarily kinetic energy A two friends drinking a soda on a park bench B a bucket of paint sitting on a ladder C a bowling ball rolling down a bowling alley D a furnace warming up a house on a cold day

How would a solution that is labeled 5.0 molar be similar to one labeled 5.0 molal?

Which type of bond is present in hydrogen sulfide (H2S) ? The table of electronegativities is given.

How many 250 mg tablets are needed to make 50 ml of a suspension if you want the concentration to be 500 mg per 5 ml?

A base a. has a low ph in solution. b. turns blue litmus paper to red. c. releases hydroxyl ions in solution. d. releases hydrogen (or hydronium) ions in solution.

Which of the following substances is NOT an alloy? a. Brass b. Bronze c. Stainless steel d. Tin

Relate the statement:"you cant get something for nothing" to the law of the conservation of mass

Which compound is sometimes found in fire extinguishers

The volume coefficient of thermal expansion for gasoline is 950 * 10-6 K-1. By how many cubic centimeters does the volume of 1.00 L of gasoline change when the temperature rises from 30°C to 50°C?

An element's most stable ion forms an ionic compound with bromine, having the formula XBr. If the ion of element X has a mass number of 85 and has 36 electrons, what is the identity of the element?