What electrons in an atom take part in chemical bonding, and what are they called

Which of the following combinations of reactants will result in a synthesis reaction? Cl2 + BaF2 Mg + HClO3 Li + H2O SO2 + H2O

If a 2.0 mL of 3.0 M HCl is used to make a 250 mL aqueous solution, what is the molarity of the dilute solution?

What is true for a substance that releases energy

A balloon is filled to a volume of 18.9L at a temperature of 27.1ºC. If the pressure in the balloon is measured to be 2.20 atm, how many moles of gas are contained inside the balloon?

Neutral atoms of the same element can differ in their number of

What is toxicity? Give an example of something from your home.

Why was it important to polish the copper strips and wire, the coin, and the nail in the electroplating experiment? You need to remove a layer of copper from the surface of each material.

Which response includes all the following that are properties of most metals, and no other properties? Z1) They tend to form cations. Z2) They have high first ionization energies. Z3) They have outer electronic shells that are more than half-filled.

How many o atoms are present in 1.04 mol of mgso4?

What would happen if the proteins that support a DNA molecule failed to function