What is the value of s in the equation 4(2s − 1) = 7s + 12? (2 points)

(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 ?

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Name these type of angles shown check all that applies