What is the formula of the ion formed when phosphorus achieves a noble-gas electron configuration?

a. p3

b. p2

c. p2-

d. p3-

When converting an acid salt dissolved in water to its acid form, you are instructed to adjust the ph well into the acidic range (ph ~ 2). why don't you just take the ph to neutral? you do?

Which does not contain a lense a mirror a telescope a microscope eyeglasses

At 300k the pressure inside a gas-filled container is 500 kPa if the pressure inside decreases to 100 kPa but the volume remains the same what is the final temperature of the gas?

Which diagram shows a voltaic cell?

Jim drops an iron magnet during a chemistry lab experiment. She finds that it is no longer magnetic. What has happened in terms of its properties? a. A chemical change occurred that changed the iron in the magnet into nickel. b.

If this energy were used to vaporize water at 100 ∘C, how much water in liters could be vaporized? Assume that the density of water is 1.0 g/mL. The heat of vaporization of water at 100 ∘C is 40.7 kJ/mol.

How many moles of solid naf would have to be added to 1.0 l of 2.39 m hf?

The sun is composed entirely of oxygen and helium True or False?

What is the oxidation number for Mn in Mn2O7? (provide sign and number)

If you have 9900 g of donuts, how many donuts do you have if each donut has a mass of 150 g?