How many moles (mol) of BaSO4 are created when 10.0 grams of Na2SO4 are used in the reaction in Question 1

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

What is the effect of returning nuclear reactor cooling water back into bodies of water?

The kw for water at 0 °c is 0.12× 10–14 m2. calculate the ph of a neutral aqueous solution at 0 °c.