Answer:
70.0°C
Explanation:
We are given;
- Amount of heat generated by propane as 104.6 kJ or 104600 Joules
- Mass of water is 500 g
- Initial temperature as 20.0 ° C
We are required to determine the final temperature of water;
Taking the initial temperature is x°C
We know that the specific heat of water is 4.18 J/g°C
Quantity of heat = Mass × specific heat × change in temperature
In this case;
Change in temp =(x-20)° C
Therefore;
104600 J = 500 g × 4.18 J/g°C × (x-20)
104600 J = 2090x -41800
146400 = 2090 x
x = 70.0479
=70.0 °C
Thus, the final temperature of water is 70.0°C
Answer: The molarity of solution is 0.453 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
where,
n = moles of solute
= volume of solution in ml
moles of 
= 
Now put all the given values in the formula of molality, we get
Therefore, the molarity of solution is 0.453 M
Answer:
Sulfur is the only element that can be identified as having 16 protons nothing more and nothing less
Since Cl2O3 is a neutral compound, it has an overall charge of 0, which means that the total oxidation number of the compound is 0.
O has an oxidation number of 2- so, 3(2-)= 6-
to have an overall charge of 0, 6+ shpuld be added. Since there are 2 Cl's 6/2=3
Oxidation number of Cl is 3+
Answer:
a. mixtures are created through physical changes and compounds are created through chemical reactions
Explanation:
