Water is known as the "universal solvent." What is the best synonym for "solvent?" A. A substance that dissolves other substances

B. A substance that's found almost everywhere on earth

C. A substance that exists as a liquid at room temperature

D. A substance that is necessary for life

What is the mass of naoh that would have to be added to 500 ml of a solution of 0.20 m acetic acid in order to achieve a ph of 5.0?

What is the percent by mass of magnesium sulfate in mgso4.7h2o

Sandy is building a small toy car. he wants to use a balloon to power the toy car. he fills a balloon with air and then attaches a straw to the balloon. he tapes the balloon-straw combination to the car and then releases the end of the balloon. the toy moves forward as the air from the balloon comes out the back of the straw. what can sandy do to make the toy car move faster? a) use less air in the balloon. b) blow up the balloon more. c) use a longer straw. d) use larger tires.