Answer:
Explanation:
Given that,
The specific heat of water is 4.184Jg°C
Mass, m = 600 g
Initial temperature, T₁ = 75.5°C
We need to find the final temperature. We know that heat absorbed is given by :
So, the final temperature is equal to 
.
Answer:
4.17 g/mL
Explanation:
In order to determine the density of the solid, we need to know both its mass and its volume.
<em>The mass </em>is already given to us by the problem, 45.0 g.
As for <em>the volume</em>, we can determine it by using <u>Archimedes' principle.</u> It states that the volume of water displaced by an object when submerged is equal to the object's volume.
- Water displaced = 75.8 mL - 65 mL = 10.8 mL
Finally we <u>calculate the density</u> of the solid:
- Density = mass / volume = 45.0 g / 10.8 mL
I think you mean:
".. reacts with oxygen gas to produce lead (II) oxide and 'sulfur' dioxide..."
The balanced chemical reaction would be
2PbS + 3O2 --> 2PbO + 2SO2
The stiochiometric ratio is this: 3 moles of O2 produces 2 moles of lead (II) oxide. So,
0.500 moles (2/3) = 0.333 moles
Therefore, 0.333 moles of PbO is produced when 0.500 moles of O2 reacts with PbS.
TMS has 12 protons which are all equivalent and four carbons, which are also all equivalent. This means that it gives a single, strong signal in the spectrum, which turns out to be outside the range of most other signals, especially from organic compounds.
