A reaction is spontaneous under a certain set of conditions. Select all equations that must be true for this reaction under these conditions: 1) ΔGrxn < 0

2) ΔGrxn > 0

3) ΔGrxn = 0

4) ΔGrxn∘ < 0

5) ΔGrxn > 0

6) ΔGrxn∘ = 0

7) ΔHrxn < 0

8) ΔHrxn > 0

9) ΔHrxn = 0

10) ΔSrxn < 0

11) ΔSrxn > 0

12) ΔSrxn = 0

13) Q = K

14) Q < K

15) Q > K

At noon, Manny's Café had 12 banana muffins, 10 chocolate muffins, 6 blueberry muffins, and 7 vanilla muffins. What is the probability that the next muffin sold is a vanilla muffin? How likely is this event?

The probability that the next muffin sold is a vanilla muffin is  

. It is  

that this event occurs.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o