Multiple choice identify the letter of the choice that best completes the statement or answers the question. the ratio of an error to an accepted value is called a(n) a. accuracy-to-precision value. b. accuracy. c. percent error. d. precision.

What semimetal can form four single covalent bonds.

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon