50 points At a football game, a vender sold a combined total of 161 sodas and hot dogs. The number of hot dogs sold was 57 less than the number of sodas sold. Find the number of sodas sold and the number of hot dogs sold.

(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 ?

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Evaluate the expression. (9 + 5)(3 + 2)0