1. Which of these show a diatomic element? CO
H₂
He
SO₂
2. Which of these substances is an element?
Chlorine
Ice
Methane
Sodium chloride
3. When the elements lead and bromine combine together, the name of the substance formed is called
Lead bromate
Lead bromide
Lead bromite
Lead bromium

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.