How many millimeters are in 251 cm?

What is the most stable monatomic ion formed from nitrogen

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?

Can someone me with 6 to 10 plz this is for masteries test.