I think the answer would be d but not 100% sure
Answer:
Yes
Explanation:
I just quickly looked it up. Cornstarch is extremely flammable.
One half-life: 5 grams
Two half-lives: 2.5 grams
Question 17:
False; cutting hair would change what it looks like but, braiding it keeps it the same substance it is.
Question 18 :
My best guess would either be A or D. I would lean more towards D because if there are different mixtures then it depends on what you are mixing.
Hope it helps in some way. <3
Answer:
propane -1 2 3 - trioic acid