How many times larger is a centigram then a milligram

Explain the relationships among balancing, chemical equations, and endothermic/exothermic

Which description best characteristic the motion of particles in a solid? Slow but able to move past one another Fast and widely spaced Not moving Vibrating around fixed position

A certain medication recommends that each day a person be given 8 mg for every 100 lbs of weight. If 10,000 people take this medication each day and their average weight is 180 lbs, how many kilograms of this drug are used daily?

The theoretical yield of Cl2 from certain starting amounts of MnO2 and HCl was calculated as 60.25 g and 65.02 g, respectively. If the percentage yield of Cl2 is 72%, what is its actual yield?

A gas in a balloon at constant pressure has a volume of 185 mL at - 125*C. What is it's volume at 31.0*C? Show all work including what equation or gas law you use.

The atomic weight of hydrogen is 1.00794. a. True b. False

Describe What kind of ions do metals form? What kind of ions do nonmetals form?

A car is driven through streets treated with salt and then parked in a warm garage. a) How will the rate of rusting compare with a car that has not been driven in the streets treated with salt but left parked outside?

Amalgam is an alloy that contains mercury and other metals. Which of these atoms would most likely form metallic bonds with mercury? Check all that apply. bromine copper hydrogen iodine silver tin

Which fossil fuel is the most widely consumed in the United States? A. petroleum B. natural gas C. peat D. coal