Which of the following elements is less reactive than the others?

Bromine (Br)

Oxygen (O)

Selenium (Se)

Sulfur (S)

What ion is formed when an atom of magnesium (mg) loses two electrons? mg-1 mg-2 mg 1 mg 2

Match each gas law with the correct statement. Boyle's Law Charles's Law Gay-Lussac's Law A. The pressure of a gas varies directly with temperature if the volume is kept constant. B.

1. How many hydrogen atoms are in 5 molecules of isopropyl alcohol, C3H7O a. 5 x (6.02 x 10^23) b. 5 c. 35 d. 35 x (6.02 x 10^23) 2. How many molecules are in 2.10 mol CO2? a. 2.53 x 10^24 molecules b. 3.79 x 10^24 molecules c. 3.

a 280.0 mL sample of neon exerts a pressure of 660.0 toff at 26.0 celsius. at what temperture would it exert a pressure of 940.0 torr in a volume of 0.44 L

The top of the saturated zone is known as?

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.