What is the Relative Formula Mass of Potassium bromide?

A wind turbine is used for what kind of energy transformation? A. mechanical energy to electrical energy B. chemical energy to electrical energy C. sound energy to heat energy D. potential energy to kinetic energy

Martha has a large amount of 1.25 M H2SO4 in her lab. She needs 36 grams of H2SO4 for a chemical reaction she wants to perform. How many liters of solution should she use?

For each of the following unbalanced reactions, suppose 5.17 g of each reactant is taken. Determine which reactant is limiting, and also determine what mass of the excess reagent (s) will remain after the limiting reactant is consumed.

72.3 g of ice at - 15.0oC has heat energy added to it until it becomes steam at 145oC. Calculate the total amount of heat energy needed (in Joules) to accomplish this.

Which of the following is the correct name for the compound MgBr2

What astronomical equiptment did hypatia use?

Name each activity or observation as either physical or chemical change. 1) Boiling water for pasta 2) Digesting food 3) Soda goes "flat" 4) Stretching a rubber band 5) Grilling a hamburger 6) Adding sugar to tea 7) Adding lemon to tea 8) Mowing the

Ironing a shirt is an example of ... convection conduction radiation condensation

Which compound conducts electricity only in the molten state? A. sodium bromide B. calcium hydroxide C. barium sulfate D. magnesium sulfate

What is going to happen to a balloon filled with helium that is left in a car over night when the temperature drops approximately 20 degrees