Answer:
First of all you need to know that chemical properties are those who are determined by chemical tests and are related to the reactivity of chemical substances. In those statements you have 4 reactions, except on "conducts electricity". That is a physical property.
Explanation:
A chemical reaction is a way in which the atoms of the elements regroup to form new substances.
Answer: this question is 3 days ago? Omg
is the final temperature of the given solution.
<u>Explanation</u>:
When heat is absorbed during reaction enthalpy is positive. To calculate amount of heat absorbed by solution:
To calculate no of moles of molar mass is 158.034 g/mol:
Hence quantity of heat can be calculated as given:
As considered that heat capacity of pure water is same as of solution (means to heat 1 gm of water by 1 degree Celsius the energy required) =
Now it is considered that due to dissolvation, no heat loss occurs and final temperature can be calculated by using specific heat capacity:
The final temperature of the solution is .
Answer:True
Explanation:
If a substance is pure, it will have exactly the same density as that reported for that particular substance in standard literature or vary within very narrow limits. Hence we can determine the purity of a gold sample by measuring it's density.