Shia

2m^8-20m^9-150m^8

A train leaves station x and travels east at 30 kph. Two hours later,another train leaves the same station and travels in the same direction on a parallel track at 45kph. At what point will the faster train overtake the slower train?

I am really having a hard time doing this question. We were asked to determine the iron content of spinach in a solution. We burned a 5.50g of spinach and added 10 ml of 2.0 M HCl in the spinach ashes. We mixed that and filtered the solution to removed th...

Just do it

Im not sure how to convert the mg Fe in 100 g of spinach. Do i just multiply the mg Fe to 100 g or I have to divide the mg Fe by the spinach mass (which is 5.50 g before i burned it) and then multiply it by 100?