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:
Explanation:
The expression for the root mean square speed is:
R is Gas constant having value = 8.314 J / K mol
M is the molar mass of gas
Molar mass of = 0.04599 kg/mol
Temperature = 400 K
Thus,
The blood the reaches the cells from the capillaries food and O2 pass to cells, CO2 and wastes
pass to blood. The rest of the choices do not answer the question above.
The electron gain for iron means that it is reduced (answer C)
Explanation
Redox reaction is made up of two halves.
That is a reduction half and a oxidization half.
In the reduction half electrons are gained which result to decrease in oxidation number.
In the Oxidization half electrons are lost which result to increase in oxidation number.
iron is therefore reduced since it gains electrons