3 6
Question 11 (Mandatory) (10 points)
Based on the following reaction:
BaCl2(aq) + Na2SO4(aq)
BaSO4(s) + 2NaCl(aq)
9
If a reaction mixture contains 4.16 g of BaCl2 and 3.30 g of Na2SO4 how many moles
of the precipitate will be formed?
11
12
A) 0.0278 moles
14
15
B) 0.178 moles
C) 0.0241 moles
.
D) 0.0200 moles

it is a solid

explanation:

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.

answerto predict;