Given below is a list of chemical reactions. 1. burning octane fuel 2. forming rust in an iron pipe 3. baking a cake 4. cement hardening which sequence ranks the chemical reactions in order from fastest to slowest? 4, 3, 2, 1 1, 3, 2, 4 3, 2, 1, 4 1, 3, 4, 2

the answer is barium and copper bromide

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.