What is one way that economics can influence your daily life

(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 ?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.