How many moles are in 25.0 grams of KMnO4? (3 points) a 0.124 mol KMnO4 b How many moles of each element are in one mole of Sr(HCO3)2? (3 points) a 1 mole of strontium, 1 mole of hydrogen, 1 mole of carbon, 5 moles of O b 1 mole of strontium, 2 moles of hydrogen, 2 moles of carbon, 6 moles of O c 2 moles of strontium, 2 moles of hydrogen, 2 moles of carbon, 5 moles of O d 2 moles of strontium, 2 moles of hydrogen, 2 moles of carbon, 6 moles of O0.158 mol KMnO4 c 0.199 mol KMnO4 d 0.316 mol KMnO4

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.

Which liquid (h2o, h2o + soap, or h2o + salt) has the strongest cohesion and adhesion? (need now plz)