Sandalwood
Explanation:
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44g of CO2 can produce by the reaction of carbon with oxygen
Answer:
2.88L
Explanation:
So lets first consider the definition of molarity.
Molarity is the amount of moles per one L of solution. So we can simply put this as:
M = moles/L of solution
So the way we are going to approach this is we need to find the amount of moles of HCl. By doing this we can then use the amount of moles we have to figure out how much 5M solution we can then make. So lets plug in what we know:
It gives us 12M of HCl so M = 12
We also have 1.2L of HCl so volume of soltion = 1.2L
Meaning we have:
So if we multiply the 1.2 over we get:
Moles: 14.4
So we used 14.4 moles of HCl in our original 12M solution.
Now we can plug this value with our 5M in instead to get our amount of solution we could form:
This gives us
5(volume) = 14.4 moles
Meaning that
Volume = 14.4/5 or 2.88L
The percent yield of this reaction is calculated as follows
Mg3N2 + 3H2O =2NH3 + 3Mgo
calculate the theoretical yield,
moles=mass/molar mass
moles Mg3N2= 3.82 g/100g/mol= 0.0382 moles(limiting regent)
moles of H2o= 7.73g/18g/mol = 0.429 moles ( in excess_)
by use of mole ratio between Mg3N2 to MgO which is 1:3 the moles of MgO = 0.0382 x3 = 0.1146 moles
mass =moles x molar mass
the theoretical mass is therefore = 0.1146mole x 40 g/mol = 4.58 grams
The % yield = actual mass/theoretical mass x1000
= 3.60/4.584 x100= 78.5%
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