Why is the C-14/C-12 ratio used to date once-living organisms?

1. A crane lifts a 75kg mass a height of 8 m. Calculate the gravitational potential energy gained by the mass:

Describe the intermolecular forces that must be overcome to convert each of the following from a liquid or solid to a gas. SO2, H2Se Check all that apply. a. Ion-dipole bonding. b. Hydrogen-bonding. c. London dispersion forces. d.

If a substance evaporates easily, it is said to be what?

What type of bond is formed by two atoms that equally share one pair of electrons?

1. A gas has a volume of 50.0 mL at a temperature of - 73°C. What volume would the gas occupy at a temperature of - 123°C? * *Celsius

What is a converging lens

What type of reaction is 2 NO2 - --> 2 O2 + N2

The main source of phosphorous is in: rocks water plants the atmosphe

To what part of a plant does the stem sliver water and nutrients

You place a balloon in a closed chamber at STP. When the balloon doubles in size, what happens to the chamber pressure? A.) The pressure stays the same B.) The pressure doubles C.) The pressure reduced by one half