What have all living things evolved from?
2 answers:
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Answer:
The answer to your question is Molarity = 0.41
Explanation:
Data
mass of KNO₃ = 76.6 g
volume = 1.84 l
density = 1.05 g/ml
Process
1.- Calculate the molecular mass of KNO₃
molecular mass = 39 + 14 + (16 x 3) = 101 g
2.- Calculate the number of moles
101 g of KNO₃ --------------- 1 mol
76.6 g of KNO₃ ------------ x
x = (76.6 x 1) / 101
x = 0.76 moles
3.- Calculate molarity
Molarity =
Substitution
Molarity =
Result
Molarity = 0.41
Answer:
The answer to your question is 75%
Explanation:
Data
Theoretical production = 4 moles
Experimental production = 3 moles
Percent yield = ?
Formula
Substitution
Result
Percent yield = 75 %
Answer:
.
Explanation:
.
Among the four species in this reaction, is species with the largest number of atoms per molecule. Assume that the coefficient of this compound is
.
.
Number of atoms on the left-hand side of the reaction:
:
.
:
.
: not found yet.
By the conservation of atoms, the number of atoms on the right-hand side of the reaction should match those on the left-hand side. In this reaction, is the only product with carbon atoms, whereas
is the only product with hydrogen atoms. These
carbon atoms and
hydrogen atoms would correspond to:
molecules, and
molecules.
.
Number of atoms on the right-hand side of the reaction:
.
.
.
The number of atoms on the left-hand side should match those on the right-hand side. In this reaction,
is the only reactant with
atoms. These
atoms would correspond to:
molecules.
.