Calculate the formula mass of carbon dioxide, CO2? (show calculations)

What are the 4 phases of matter in order of increasing engery content?

In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)

Which change to the system wood cause the freely-moving piston to lower?