Sort these elements into pairs

Mg

Cl

As

Sr

I

N

Physical properties of ice cube

A scientist collected the following data, which show how the pressure of water vapor changes with temperature. Temperature (°C) Pressure (mm Hg) 0 4.5 10 9.6 20 19.1 30 33.2 40 58.7 50 95.

6 Li + N2 - -> 2 Li3N How much N2 is needed to make 1.34 moles of Li3N?

Ryan saws some more wood from the top of the pyramid. The cross section moves closer to the base of the pyramid. What happens to the size and shape of the cross section when compared with the cross section in part A?

Cyanide is very toxic in high enough doses because it binds irreversibly to cytochrome C. Which of the following is not an effect of cyanide's inhibition of cytochrome C?

Epsom salts (magnesium sulfate) have a solubility of 26.2 grams. If you dissolved 26.0 grams of Epsom salts in 100 g of water at 20 degrees Celsius, what type of solution would this be?

An airplane model is an example of what type of model

A radioactive isotope has a half-life of 2.5 years. Which fraction of the original mass remains unchanged after 10 years?

The air exhaled from the lungs of a smoker has a concentration of 24 ppm CO. Express the concentration as a percent.

The age of fossils can sometimes be determined by radiometric dating, which is based on the constant rate of decay of radioactive isotopes. the time required for half of a radioactive isotope to decay is called the half-life of that isotope.