What is the specific heat capacity of aluminum if a 8.4 g sample increased 21.1 C upon the addition of 159.0 J? The units are J/(g ·K).

q=cpxMxT is the equation
my answer i got is 401.65 is that right bec i feel that's wrong

q=mcT

c=q/mt=159/(8.4*21.1)

so in units J/gC, your answer is wrong.