Express the sin4x + sin2x as product of two trigonometrical ratios.

(a) 2sin3xcos2x (b) 2sin3xcosx (c) 2sin2xcos2x (d) sin3xcosx

(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 distributive property allows you to say that 3(x − 1) = 3x −

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