Elderly drivers. A polling agency interviews 813 American adults and finds that 504 think licensed drivers should be required to retake their road test once they reach 65 years of age. Round all answers to 4 decimal places.

(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 ?

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?