Answer:
1.852 g of CO2 were produced in the chemical reaction
Explanation:
The problem is pretty simple. We can write down the chemical reaction that is involved to help us understand better what is going on in the process:
CaCO3 (aq) + HAc (aq) → CaAc (aq) + CO2 (g) + H2O (l)
Let's think this through: we have a tablet that has an active compound (CaCO3) and an inert substance that weighs 0.833 g. When we add 58.072 g of an acid solution (represented in the equation as HAc because we are not told specifically which acid is being added), CO2 is formed and released from solution as gas leaving us with an aqueous solution that weighs 57.053 g.
Having said that, we know that the only mass lost during the reaction is due to the formation of CO2 gas. Therefore, we sum the reactants (the tablet + the acid solution) and subtract the mass of the remnant solution. This value will indicate us the amount of CO2 formed:
0.833 g of the Tablet + 58.072 g from the Acid solution = 58.905 g
58.905 g of reactants - 57.053 g of remnant solution = 1.852 g of produced CO2.
Answer:
81% Yield
Explanation:
2CO + O₂ => 2CO₂
Excess 3.70g O₂ => 8.25g CO₂ (actural yield)
(3.70g O₂)/(32g O₂/mol O₂)
= 0.1156 mol O₂ => 2(0.1156) mol CO₂
= 10.175g (Theoretical Yield)
%Yield = (Actual Yield / Theoretical Yield)100%
= (8.25g/10.175g)100% = 81% Yield
<span>c. energy needed to remove an electron from an atom or ion in the gas phase</span>
