Classify each of the follow representation of matter as element, compound, homogeneous mixture or homogeneous mixture. You may use an answer choice once, more than once or not at all.

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water

Mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k?