An interesting enzyme, whose molecular weight is 56,000 g/mol, is used in catalytic amounts to cleave a membrane protein, whose
molecular weight is 65,000 g/mol, into two fragments having molecular weights of 43,000 and 22,000 g/mol. Gel chromatography is used to assess the extent of reaction at various times. Three major fractions of proteins are eluted at each time. What are they and in what order are they eluted
1 answer:
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1) 385 J
2) 450 J
Explanation:
1)
The amount of energy that must be absorbed by a certain substance in order to increase its temperature by is given by the equation:
where
m is the mass of the substance
C is its specific heat capacity
is the increase in temperature of the substance
For the block of copper in this problem, we have:
m = 10 g is the mass
is the specific heat capacity of copper
is the change in temperature
So, the energy absorbed by the block of copper is
2)
Similarly for the block of iron, the energy absorbed by the iron is given by
where
m is the mass of the block of iron
C is its specific heat capacity of iron
is the increase in temperature of the block
Here we have:
m = 10 g is the mass of the block
is the specific heat capacity of iron
is the change in temperature
So, the energy absorbed by the block of iron is