HELP PLZ ANSWER ASAP A student is asked to prepare 400.0 mL of a 0.25M HCl solution. The students find a bottle labeled “2.0M HCl.” How many mL of the 2.0M solution are needed to prepare the 0.25M solution?
The options are:

25mL
3.0 x10^1 mL
5.0 x 10^1 mL
2.00 x10^1 mL

What are transitions between a liquid and gas called? identify which way they are transitioning

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?

What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-