I think it’s A because they only intersect once.
Answer:
35.9 grams
Step-by-step explanation:
We use the formula:

Where
q is heat released
m is mass
C_p is the constant 2.44
ΔT is change in temperature
We put the info in the formula and solve for m (mass):

The mass of ethanol is 35.9 grams
Answer: 12 21
Step-by-step explanation:
30 minutes after 7:30 would be 8:00 PM