May someone assist, please...? I don't know how to do chemistry work... 1) How many mL of 5.00M CaSO4 solution must be

diluted with water to prepare 500.0 mL of 0.900M CaSO4?

2) 20.0 mL of a stock solution of NaOH is diluted with water to prepare 150.0mL of 1.50 M NaOH solution.

Calculate the Molarity of the stock NaOH solution?

3) 12.00 mL of 3.50 M NaOH solution is diluted with 88.0 mL of water.

What is the concentration of sodium hydroxide in the diluted solution?

4) 9.0 mL of 8.0 M HCl solution is diluted with water to prepare 0.50 M HCl solution. What is the final volume of this solution?

Forgot the question hahaha

The density would be 1.622

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.