One (1) mole of ethanol (C6H60) can provide 327 kcal of energy when burned and one (1) mole of hydrogen (H2) provides 68.4 kcal of energy. Based on mass in grams, which chemical is a better source of energy? Show Calculations

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate