To change the energy in a substance, you must change what?

Temperature

Solid

Volume

Density

What acid and base are neutralized to give potassium nitrate salt?

Suppose you fill a grass with ice cubes. When the ice cubes melt, is the glass still full?

If Marie and Calvin dissolve 50 grams of KBr in 100 grams of water at 90oC, the solution is

Which of the following would not be an isotope of carbon-12? A. Carbon-14 B. Carbon-13 C. Boron-12 D. Carbon-11

When placed in a 100-ml cube-shaped box, a substance filled the cube and has a volume of 100ml. when placed in a 50-ml tube, that same amount of substance filled the tube and thus has a 20-ml volume. what is the state of the substance?

What types of mixtures are these? peanuts and almonds mixed together in a bowl food coloring dissolved in water a cup of tea and sugar a bucket full of sand and gravel

Which of the following is the correct scientific notation for 0.00000862?

Calculate the mass of water produced when 42.0 g of propane, c3h8, is burned with 115 g of oxygen. hint: write balanced equation first

Determine the number of moles of O2 (g) needed to completely react with 8.0 moles of CO (g).

A 1.00 liter solution contains 0.37 M nitrous acid and 0.48 M potassium nitrite. If 0.120 moles of calcium hydroxide are added to this system, indicate whether the following statements are true or false.