It requires 120 J of heat to raise the temperature of 70.0 g of rhodium from 280.0 K to 287.8 K. What is the molar heat capacity of rhodium?
mols Rh = grams/molar mass = ?
q = mols Rh x specific heat x (Tfinal-Tinitial)
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To find the molar heat capacity of rhodium, we need to use the formula:
C = Q / (nΔT)
Where:
C is the molar heat capacity
Q is the amount of heat transferred
n is the number of moles
ΔT is the change in temperature
First, let's calculate the amount of heat transferred (Q) using the given data. We are told that it requires 120 J of heat, so Q = 120 J.
Next, we need to calculate the number of moles of rhodium (n). To do this, we need to know the molar mass of rhodium. Let's assume it is 102.9 g/mol.
n = mass / molar mass
n = 70.0 g / 102.9 g/mol
Now we can calculate n.