Which two features are parts of a line graph?

Match the acid base pairs by arranging the acid name with the conjugate base formula. hydrogen carbonate hydrogen phosphate carbonic acid read water sulfuric acid phosphoric acid a. co32- b. hso4- c. hco3- d. po43- e. h2po4- f. oh-

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Are oil and water a mixture or solution