Which of these is a unit of pressure?
i. psi
ii. k
iii. atm
o
i only
o
i and ii
iii only
i and iii

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

Which metals are called noble metals

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.