Answer: The amount of heat required is 6275 J
Explanation:
To calculate the change in temperature, we use the equation:
[tex]q=mc\Delta T[/tex]
where,
q = heat absorbed = ?
m = mass of methanol = 50 g
c = specific heat capacity of methanol = 2.51 J/g.K
[tex]\Delta T=[/tex] = change in temperature = [tex]T_2-T_1=(70-20)^oC=50^oC=50K[/tex] (change remains the same)
Putting values in above equation, we get:
[tex]q=50g\times 2.51J/g.K\times 50K\\\\q=6275J[/tex]
Hence, the amount of heat required is 6275 J