How much heat is needed to warm a 50.0g piece of solid copper from 25.0°C to 200.0PC?
(the specific heat of copper is 0.385 J/g °C)

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml

How is the way a mixture is combined different from how a compound is combined?