Answer:Granite forms as magma cools far under the earth's surface. Because it hardens deep underground it cools very slowly. This allows crystals of the four minerals to grow large enough to be easily seen by the naked eye. Look at the photo of granite above, notice the different crystals in the rock
Explanation:
The answer is option number one
Answer:
ΔHreaction = 263.15 kJ/mol
Explanation:
The reaction is as follow:
OH + CF₂Cl₂ → HOF + CFCl₂
You need to calculate the enthalpy of reaction and for this it is necessary to know the standard enthalpies for each of the compounds. These enthalpies are as follows and can be found in your textbook or on the Internet.
ΔHreaction = ∑ΔHproducts - ∑ΔHreactants

Answer:
a. 342.9 kJ of heat are absorbed.
Explanation:
Calculation of the moles of
as:-
Mass = 20.00 g
Molar mass of
= 17.031 g/mol
The formula for the calculation of moles is shown below:
Thus,

Given that:- 
It means that 1 mole of
undergoes reaction and absorbs 1168\ kJ of heat
So,
1168 mole of
undergoes reaction and absorbs
of heat
<u>Amount of heat absorbed = + 342.9 KJ</u>