Answer:
Check the image file attached
Explanation:
2.5X20=50g
50g should be the right answer
Mass=volumeXdenisty.
Answer:the answer is b
Explanation:I took the test and got it right
The amount of the solute is constant during dilution. So the mole number of HCl is 2*1.5=3 mole. The volume of HCl stock is 3/12=0.25 L. So using 0.25 L stock solution and dilute to 2.0 L.
Some policies they might do is to put limits on water usage, like making sure that people don't use too much water in baths and when they are tending to their gardens.
