A. Explain the difference between an exothermic chemical reaction and an endothermic chemical reaction.

B. How is the enthalpy of reaction related to the enthalpies of formation for the products and reactants?

Which has more momentum - an 80 kg runner with a velocity of 2.45 m/s or a 65 kg runner with velocity of 3 m/s? Show work

When are the products of an equalibrium reaction favored

CH2 Br2 geometry shape name

Why did water dissolve the packing peanuts?

Pure sodium metal explodes when it makes contact with water, and chlorine, in its natural state, is a deadly, poisonous gas. When these two chemicals combine, they form a harmless, white powder known as sodium chloride or table salt.

You add 5.7 g of iron to 25.20ml of water and observe that the volume of the iron and water together is 25.92ml calculate thw density of the iron

Which of the following is not a solution? Saltwater Steel Vinegar Milk

Which sentence correctly describes the position of electrons within an atom? A. Electrons exist outside the nucleus in indistinct electron clouds B. electrons orbit the nucleus in distinct circular paths c.

The density of octane is 0.700 g/cm3. What is the mass of one liter of octane?

An aqueous 0.300 M glucose solution is prepared with a total volume of 0.150 L. The molecular weight of glucose is 180.16 mol What mass of glucose (in grams) is needed for the solution?