A2.61 g sample of a substance suspected of being pure gold is warmed to 72.8 ∘c and submerged into 15.8 g of water initially at 24.9 ∘c. the final temperature of the mixture is 26.1 ∘c. what is the specific heat capacity of the unknown substance (in j/g*ºc)?

 mg = 2.42 g 
Tg = 72.2 deg.C 
mw = 15.8 g 
Tw = 24.5 
Tf = 27 deg. C 
Cw = 4.18 J/g. deg. C 

Energy balance for insulated system, 
ΔE = 0 
ΔUw + ΔUg = 0 
ΔUw = - ΔUg 
Qin = Qout 
mg*cg*ΔTg = mw*cw*ΔTw 
2.42*cg*(72.2 - 27) = 15.8*4.18*(27 - 24.5) 
cg = 1.5095 J/g. deg.C or 1.5095 J/g.K

You can still be friends with each other. you don't have to date since he likes someone else. just stick to being friends for now

It shows that the experiment is designed properly.