This is due tonight and I need help. (Please don’t delete answers or spam. Thank you! )

I’ll mark brainliest :)

What is the percent by volume (v/v) of a solution with 1.08 mL of formaldehyde
dissolved in 198.92 mL of water?

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm

What is the molarity of the solution produced when 145 g of nacl is dissolved in sufficient water to prepare 2.75 l of solution?