What is the freezing point of water?

Uanita borrowed $600 to purchase a new computer. she was charged 7% interest for two years. she used the simple interest formula to find the interest. i = 600(7)(2) what error did juanita make and how will her error affect the interest she calculates? explain.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms