6. Using copper pennies (assume they are 100% copper), measure one mole of copper. Compare the size and shape of your pile with the
piles of other students. Notice that even though they may look
different, they all contain one mole of copper.

An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid