Write in usual form :- a.8×(10)-⁹
b. 3.9 × (10)³
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(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 ?

Two lines parallel to a third line are parallel to each other. always sometimes or never

Which is a graph of a proportional relationship?