Which of the following has three electrons in its valence shell?

carbon,

aluminum,

sodium,

calcium

Explain how valence electrons are involved in ionic and metallic bonding

How many milligrams of sodium sulfide are needed to completely react with 25.00 ml of a 0.0100 m aqueous solution of cadmium nitrate, to form a precipitate of cds (s) ?

If Earth's surface were to cool, would carbon dioxide play a larger or smaller role as a greenhouse gas

Which of the following would not cause an increase in the pressure inside a sealed container of neon gas?

A chemist dissolves 660. mg of pure hydroiodic acid in enough water to make up 300. mL of solution. Calculate the pH of the solution.

1. What is something you might see a scientist doing?

Is fire living or non living

Which of these is used to find the estimated age range of a fossil?

I want to convert atoms to moles. My friend tells my to multiply the number of atoms by 6.02 x 102. Is my friend correct?

Combining 0.301 mol Fe2O3 with excess carbon produced 11.6 g Fe. Fe2O3+3C⟶2Fe+3CO What is the actual yield of iron in moles?