Respuesta :
ANSWER
The heat required is 544500J
EXPLANATION
Given that;
The mass of ethanol is 45kg
The initial temperture is 14 degrees Celcius
The final temperature is 19 degrees Celcius
The specific heat capacity of ethanol is 2.42 J/g degrees Celcius
Follow the steps below to find the heat required
[tex]\text{ q = mc}\Delta T[/tex]Convert the mass of ethanol to grams
Recall, 1 kg is equivalent to 1000g
[tex]\begin{gathered} \text{ 1kg }\rightarrow\text{ 1000g} \\ \text{ 45kg }\rightarrow\text{ xg} \\ \text{ cross multiply} \\ \text{ 1kg }\times\text{ xg = 45kg }\times\text{ 1000g} \\ \text{ isolate xg } \\ \text{ xg = }\frac{45\cancel{kg}\times\text{ 1000g}}{1\cancel{kg}} \\ \text{ xg = 45000g} \end{gathered}[/tex]The mass of ethanol in grams is 45000 grams
[tex]\begin{gathered} \text{ q = 45000}\times\text{ 2.42}\times\text{ \lparen19 - 14\rparen} \\ \text{ q = 45000}\times\text{ 2.42}\times\text{ 5} \\ \text{ q = 544500J} \end{gathered}[/tex]The heat required is 544500J
