The mean is 50 the standard deviation is 5. what numbers is three standard deviations above the mean

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

Answers; a) 135 degree’s b) 30 degree’s c) 180 or 0 degree’s d) 90 degree’s

How many bananas are in a fruit bowl that has 200 total apples and bananas if there are 31 bananas for every 93 apples