How many neutrons does element x have if its atomic number is 42 and its mass number is 160? neutrons?

What is the mass of 2.50L of SO2 gas at stp

What tools would you use to measure the density of a rectangular block?

Pam stirred a packet of fruit punch drink mix into a pitcher of 6 cups of warm water until it dissolved. She then put in 10 ice cubes to cool down the mixture before she drank it.

The addition of NaOH to water would result in which of the following? A) A decrease in [H3O+] and an increase in pH B) A decrease in [H3O+] and a decrease in pH C) An increase in [H3O+] and an increase in pH D) No change in [H3O+] and an increase in

A wide mouthed container used to transport, heat or store substances?

What is the orbital diagram for phosphorus

The atoms of gaseous helium are

The subatomic particle that has the least mass is the ...

Which two properties are used to define matter? has mass and conducts heat has buoyancy and volume has mass and takes up space conducts energy and has characteristic properties

Calculate the energy if 48.7 g of Al reacts in the following reaction. (Al = 26.98 g/mol) Fe2O3 (s) + 2 Al (s) →Al2O3 (s) + 2Fe (s) ∆Hrxn = - 852 kJ.