The approximate molar concentration of several chemicals are given. Find the pH of each. Use the calculator and round to the nearest tenth, if necessary. Oven cleaner: [H+] = 10−13 pH = Water: [H+] = 0.0000007 pH = Blood: [H+] = 0.00000004 pH = Vinegar: [H+] = 0.0063 pH =

Acommunity group sells 2,000 tickets for its raffle. the grand prize is a car. neil and 9 of his friends buy 10 tickets each. when the winning ticket number is announced, it is found to belong to neil's group. given this information, what is the probability that the ticket belongs to neil? a.1/5 b.1/10 c.1/200 d.1/4

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Me because some of question i don’t understand