Answer:
35.9 grams
Step-by-step explanation:
We use the formula:
[tex]q=m*C_p*\Delta T[/tex]
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):
[tex]q=m*C_p*\Delta T\\-3.12 = m*2.44(12.3-47.9)\\-3.12*10^3=m*(-86.864)\\m=35.9[/tex]
The mass of ethanol is 35.9 grams
