Find the specific heat of the unknown substance and identify it. I got 0.836J/gC I think it is carbon dioxide but I am not sure. Unknown: 40g,...

Find the specific heat of the unknown substance and identify it. I got 0.836J/gC I think it is carbon dioxide but I am not sure.

Unknown: 40g, Initial Temp=44, Final Temp=24

Water: 40g, Initial temp=20, Final Temp= 24 Specific heat=4.184

Know: q of unknown = -q of water