1) What dishes & substances are needed to prepare a 0.2 M 50 mL NaNO3 solution? 2) What volume of vessel is required to dilute 50 mL of 0.2 M NaNO3 solution & obtain 0.1M solution?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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.