Chemistry, 20.07.2020 01:01 SugaAndKookie22
Initial: CaCl •2H O (g)Initial: CaCl •2H O (mol)Initial: CaCl (mol)Initial: Na CO (mol)Initial: Na CO (g)Theoretical: CaCO (g)Mass of Filter paper (g)Mass of Filter Paper + CaCO (g)Actual: CaCO (g)% Yield:2 2 1.0 g2 2 0.0068 mol2 0.0068 mol2 3 0.0068 mol2 3 0.8 g3 0.68g0.9 g3 1.5 g3 0.6 g86%
1. Given that a theoretical yield for isolating Calcium Carbonate in this experiment would be 100%. From that information and based on the results you obtained in this experiment, describe your success in the recovery of calcium carbonate and suggest two possible sources of error that would have caused you to not obtain 100% yield. Excess product of CaCO3 would be produced because there wouldn't be enough CaCl2 to react with Na2CO3. The purpose of stoichiometric quantities is to know the correct amount or close to the correct amount of each reactant in order to produce a product that is close to the theoretical amount and therefore have a higher percent yield.
2. What impact would adding twice as much Na CO than required for stoichiometric quantit ies have on the quantity of product produced?
3. Determine the quantity (g) of pure CaCl in 7.5 g of CaCl •9H.
4. Determine the quantity (g) of pure MgSO in 2.4 g of MgSO •7H O.
5. Conservation of mass was discussed in the background. Describe how conservation of mass (actual, not theoretical) could be checked in the experiment performed.
Answers: 3
Chemistry, 22.06.2019 02:00, lwattsstudent
In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al
Answers: 1
Chemistry, 22.06.2019 02:30, ulilliareinhart2
The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!
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Chemistry, 22.06.2019 05:40, yah2muchh
Calculate: select the worksheet tab. this tab you calculate the analyte concentration. fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.) record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes. record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed
Answers: 2
Initial: CaCl •2H O (g)Initial: CaCl •2H O (mol)Initial: CaCl (mol)Initial: Na CO (mol)Initial: Na C...
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