Before free oxygen gas became abundant in the oceans and atmosphere, it reacted with a metal and produced what type of formations?

a. the ionosphere

b. the ozone layer

c. banded iron formations

d. stromatolites

Which practice is an unsustainable way of managing resources?

What is a freedom called when it is specified in law? Freedom specified in law is called a Reset

At a dosage of 2.8 mg per kg of body weight, how many mg of adrenaline should an 84 kg adult receive.

As the average kinetic energy of the particles in a gas increases, which of the following occurs? The temperature of the gas increases. The temperature of the gas decreases. The number of particles increases. The number of particles decreases.

Why is the air pressure greater on the mountain top

If you start with 100 grams of a radionuclide, how much will you have after two half-lives have passed?

Identify the spectator ions in the following complete ionic equation. 2k (aq) s2 - (aq) pb2 (aq) 2no-3 (aq) →pbs (s) 2k (aq) 2no-3 (aq) express your answers as ions separated by a comma.

4. A bird left its post and flew in a triangular path. It flew 21 yards south, 72 yards east and 75 yards diagonally to end back at the post. Is it a right triangle?

Condension occurs in the inside of your windows in Winters, why?

How can you use Hess's law to determine a reaction's enthalpy?