The heavier a gas molecule,

1) At the same temperature, the faster it travels

2) At the same temperature, the slower it travels

3) At the same pressure, the faster it travels

4) At the same pressure, the slower it travels

Plasma is found in which of the following substances? A. Welding torches B. Magnets C. Microwave ovens D. Stars

Which chemical, originally produced from the ashes of plants, is essential for making soap

Which group tends not to form ions or react?

Choose an appropriate question to ask when you add salt to water to make pasta.

For the reaction 2Fe+3Cl2=2FeCl3

Suppose that you measure a pen to be 10.5 cm long. Convert this to meters.

How are amounts of hydrogen and oxygen gas made from the electrolytic decomposition of water related to the chemical formula of water?

Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction: 2H2O2 (l) → 2H2O (l) + O2 (g) ΔH = - 196 kJ Calculate the value of q (kJ) in this exothermic reaction when 3.

What is the concentration of hydronium in each of the following cases: [OH-] = 10-12 M? [OH-] = 10-2 M?

Which statement best explains why elements are matter? An element is a physical substance that has mass and takes up space. Elements are pure substances that cannot be divided chemically. Each element is a pure substance composed of one type of atom.