How much heat is required to convert 29g of ice at -4.0c to water vapor at 105
1 answer:
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Answer : The value of of the gas is 2.79 Joules.
Explanation :
First we have to calculate the moles of helium.
Molar mass of helium = 4 g/mole
Now we have to calculate the heat.
Formula used :
where,
q = heat
n = number of moles of helium gas = 0.0125 mole
= specific heat of helium = 20.8 J/mol.K
= initial temperature = 310.0 K
= final temperature = 235.0 K
Now put all the given values in the above formula, we get:
Now we have top calculate the work done.
Formula used :
where,
w = work done
p = pressure of the gas = 1 atm
= initial volume = 1.21 L
= final volume = 0.99 L
Now put all the given values in the above formula, we get:
conversion used : (1 L.atm = 101.3 J)
Now we have to calculate the value of of the gas.
Therefore, the value of of the gas is 2.79 Joules.
Answer:
The Lewis structures are shown in the figure
Explanation:
The lewis structure will be drawn using following steps
i) we will calculate the total number of valence electrons in the molecule
ii) will assign one bond (two electrons in between two atoms)
iii) then distribute the rest of the valence electrons as lone pair or shared pair based on completion of octet.
The structure of each molecule is given in the figure.
Valence electrons:
V.E = 5 +(2)6-1=16
V.E =5 +(2)6+7=24
