the answer is 360 g H2O with a 90.3 yeild percentage
Complete Question
A sample of aluminum, which has a specific heat capacity of 0.897 JB loc ! is put into a calorimeter (see sketch at right) that contains 200.0 g of water. The aluminum sample starts off at 85.6 °C and the temperature of the water starts off at 16.0 °C. When the temperature of the water stops changing it's 20.1 °C. The pressure remains constant at 1 atm. Calculate the mass of the aluminum sample.
Answer:
![M=58g](https://tex.z-dn.net/?f=M%3D58g)
Explanation:
From the question we are told that:
Heat Capacity ![H=0.897](https://tex.z-dn.net/?f=H%3D0.897)
Mass of water ![M=200g](https://tex.z-dn.net/?f=M%3D200g)
Initial Temperature of Aluminium ![T_a=85.6](https://tex.z-dn.net/?f=T_a%3D85.6)
Initial Temperature of Water ![T_{w1}=16.0](https://tex.z-dn.net/?f=T_%7Bw1%7D%3D16.0)
Final Temperature of Water ![T_{w2}=16.0](https://tex.z-dn.net/?f=T_%7Bw2%7D%3D16.0)
Generally
Heat loss=Heat Gain
Therefore
![M*0.897*(85.6-20.1) =200*4.184*(20.1-16)](https://tex.z-dn.net/?f=M%2A0.897%2A%2885.6-20.1%29%20%3D200%2A4.184%2A%2820.1-16%29)
![M=58g](https://tex.z-dn.net/?f=M%3D58g)
Answer:
Pb2+(aq) + 2Cl–(aq) ----> PbCl2(s)
Explanation:
The net ionic equation shows the main reaction that takes place in a system. Hence, a net ionic equation focusses only on those species that actually participate in the reaction.
For the reaction between Pb(NO3)2 and NH4Cl , the net ionic equation is;
Pb^+(aq) + 2Cl^-(aq) ---> PbCl2(s)