Given what you know about acids and bases, which of the following descriptions is the most accurate?

a. we can tell a substance is acidic if it had a high ph
b. a basic substance has a low ph
c. acid generally taste bitter and turn litmus paper blue
d. bases taste bitter and turn litmus paper blue

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Match each statement with the state of matter it describes