Specific heat of metal! :)

The purpose of this lab is to find the specific heat of the metal without having a flame or some form of heat directly on the metal. We find the specific heat with an equation q=mc(/\T), that is mass of water x the specific heat of water x the temperature change.Water holds heat longer then metals so the heat isn't directly on the metal
We were given the specific heats of water and metals.
Water - 4.184
Al- 0.897
Cu-0.385
Lead- 0.129
Brass- 0.385
Zn- 0.390

We did this by boiling a beaker of water with the metal inside on a hot plate till it got to a boil.



We then transferred the metal from the boiling water to another beaker of normal tap water with the initial temperature of 21.1°C. 



With the metal in the in the new water the temperature change was low. Only by 1.4°C, so the beaker of water was then 22.5°C









A problem in our lab was transferring the metal from the boiling water to the second beaker, there was a loss of heat but that is common. Other then that there was not an error. 



Our heat the water gained was:
 120.737 H2O x 4.184 x 1.4 = 707.22905 J

In conclusion I got that our metal was lead.

Chemical Formula's

The Formulas that are hard for me to remember are the acids. A good way to remember an acd is that it has an H (hydrogen) at the front of it. The Acid also has to be balanced.

Example: Sulfate SO4 
               
Add Hydrogen -> HSO4

Sulfates charge is -1 Hydrogen's charge is+1
So there is only one atom of sulfate and one of Hydrogen

<sub>Example: Phosphoric Acid
      Phosphate: PO4
      Phosphoric Acid: H3PO4

Since the charge on phosphate is -3, and the hydrogen +1 you have to have 3 hydrogen.</sub>
 

 
  

Lab Reaction Post

In this chemical reaction there are two clear aqueous chemicals Barium Chloride and Sodium Sulfate in a double replacement reaction.  BaCl2 + NaSo4 = NaCl + BaSo4
I predicted it would make it a  white/ grey color. I did not expect it to turn grey only where a single drop was, I thought it would just turn all of it grey with a single drop but I didn't try and stir it around. I did end up turning a grey foggy color.
The picture isn't completely clear but with a single drop of the barium chloride it turns a grey in the spot in it dropped and slowly expands around in the rest of the Sodium Sulfate.  

Um this is for my chemistry class and I'm so excited to have a blog!