Answer:
element
Explanation:
Elements are pure substances with only one kind of atom
Answer:
The chemical equation needs to be balanced so that it follows the law of conservation of mass. A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side.
Explanation:
How do you balance equations?
In general, however, you should follow these steps:
1. Count each type of atom in reactants and products.
2. Place coefficients, as needed, in front of the symbols or formulas to increase the number of atoms or molecules of the substances.
3. Repeat steps 1 and 2 until the equation is balanced.
Answer:
HC₂H₃O₂ + NaHCO₃ —> NaC₂H₃O₂ + CO₂ + H₂O
The coefficients are: 1, 1, 1, 1, 1
Explanation:
_HC₂H₃O₂ + _NaHCO₃ —> _NaC₂H₃O₂ + _CO₂ + _H₂O
To balance an equation, we simply do a head count of the individual elements and ensure they are balanced on both side.
For the above equation, we shall balance it as :
HC₂H₃O₂ + NaHCO₃ —> NaC₂H₃O₂ + CO₂ + H₂O
Reactant:
H = 5
C = 3
O = 5
Na = 1
Product:
H = 5
C = 3
O = 5
Na = 1
From the above, we can see that each element is the same on both side of the equation. Thus the equation is already balanced
HC₂H₃O₂ + NaHCO₃ —> NaC₂H₃O₂ + CO₂ + H₂O
The coefficients are: 1, 1, 1, 1, 1
You need to use Stoichiometry
Answer:
Theoretical yield of C = 7.9 g
Actual amount of C isolated = 5.0 g
Explanation:
Given that in the reaction, Compound A combines with Compound B t o produce Compound C and no other products, the reaction is a combination reaction. The equation of the reaction is given below:
A + B ---> C
Part A:
From the measurement of the masses of A and B present before and after the reaction, the following values were obtained:
Initial mass of A = 4.0 g
Final mass of A = 0.0 g
Mass of A used up + 4.0 - 0.0 = 4.0 g
Initial mass of B = 9.0 g
Final mass of B = 5.1 g
Mass of B used up = 9.0 - 5.1 = 3.9 g
According to the law of conservation of mass, matter can neither be created nor destroyed but can change from one form to another. Therefore, theoretical yield of C equal the sum of the masses of A and B used up.
Theoretical yield of C = 4.0 + 3.9 = 7.9 g
Part B:
Given that the percent yield is 63.0 % = 0.63
Actual amount of C isolated = 0.63 * 7.9 = 5.0 g
