I need help understanding how to complete this question. I am not sure if the items in the table are correct, except I do know that the weight of the paper is correct.
calculate how many moles of CaCl2•2H2O are present in 1.50 g of CaCl2•2H2O and then calculate how many moles of pure CaCl2 are present in the 1.50 g of CaCl2•2H2O. Record the answers in Data Table 1.
Use the information and examples provided in the Exploration and the values recorded in Data Table 1 from Step 8 to determine how many moles of Na2CO3 are necessary to reach stoichiometric quantities. From that calculation, determine how many grams of Na2CO3 are necessary to reach stoichiometric quantities. Record both values in Data Table 1.
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I need help understanding how to complete this question. I am
not sure if the items...
please help. 8 Use the information and examples provided in the Exploration to calculate how many...
please help.
8 Use the information and examples provided in the Exploration to calculate how many moles of CaCh+2H20 are present in 150 g of CaCly 2H20 and then calculate how many moles of pure Cach are present in the 1.50 g of CaCl 2H2O. Record the answers in Data Table 1 Use the information and examples provided in the Exploration (and values input into Data Table 1, in step 8) to determine how many moles of Nazco, are necessary...
The example given the following problem: I used 1.50 grams of the CaCl2•2H2O. I just want...
The example given the following problem:
I used 1.50 grams of the
CaCl2•2H2O.
I just want to make sure I did my calculations right?
Could someone please review my answers and provide appropriate
feedback my their answers to mine differ?
If they do, can you show your work.
A step-by-step example of this process, using the balanced equation from Figure 1, is shown below: CuSO4(aq)2NaOH(aq) -> Cu(OH)2(s) Na2SO4(aq) Assuming there are only 5.70 grams of CuSO4 available, how many grams...
please help fill in this chart using this reaction Na2CO3(aq) + CaCl2*2H2O(aq) -> CaCO3(s)+2NaCl(aq)+2H2O (aq) Given...
please help fill in this chart using this reaction Na2CO3(aq) + CaCl2*2H2O(aq) -> CaCO3(s)+2NaCl(aq)+2H2O (aq) Given information 1 - CaCl2•2H2O Calcium chloride, dihydrate - 2.5 g 1 - Filter paper, 12.5 cm 1 - Na2CO3 - Sodium carbonate - 2 g 1 - Weighing boat, plastic Initial: CaCl2•2H2O (g) (1 gram) Initial: CaCl2•2H2O (moles) Initial: CaCl2 (moles) Initial: Na2CO3 (moles) Initial: Na2CO3 (g) Theoretical: CaCO3 (g) Mass of Filter paper (g) Mass of Filter Paper + CaCO3 (g) Actual: CaCO3...
Please help!! with question (18 ,19, 20 ) the data is coming directly from professor and...
Please help!! with question (18
,19, 20 )
the data is coming directly from
professor and i think she made a mistake because after I work out
problem I get theoritcal yeild of 0.850 grams
CaCO3 but the experiment actual yield is 8.322 grams (work out
question 12 )
Carbonate LI General Chemistry Lab I H.Y. & S.D. ame ata Sheet Section Date • Precipitating Cacos 1) Volume of Na2CO3, mL 8.22mL or 0.00824 2) Molarity of Na2CO3 solution, mol/L...
I just need help understanding the steps to get the theoretical yeild and percent yield of...
I just need help understanding the steps to get the
theoretical yeild and percent yield of CaCO3. using the given
information.
H.Y. & S. D. Precipitating Calcium Carbonate CHMI21 General Chemistry Lab 1 • Treatment of Data: 14) mole amount of Na CO, 15) mole amount of CaCl 16) limiting reagent .00832 00976 NonCO₃ .00735 .832 .au 112.98 mole amount of CaCO, 17) 18) 19) 20) Theoretical Yield (g) of Cacos Actual Yield (g) of Caco, Percent Yield (%) Calculations...
Name UULUUL. LULUI 2019 11. Use the molar masses provided to help solve the next two...
Name UULUUL. LULUI 2019 11. Use the molar masses provided to help solve the next two problems Molar Mass: CaCl2•2H20 = 147.02 g/mol NaCO3 = 105.99 g/mol Cacoa = 100.09 g/mol a. How many moles of Na2CO, are in a sample that contains 4.50 grams of Na2CO3? show calculation and use correct significant figures b. Students completed a reaction and they made chalk. CaCl2(aq) + Na2CO3(aq) → 2NaCl(aq) + CaCO3(s) If the students mixed together 1.33 grams of CaCl2.2H20 with...
I need help with row 4 & 5. before after Data Table Complete the Data Table...
I need help with row 4 & 5.
before after Data Table Complete the Data Table below. And then See ANSWER SHEET for Q3 rxn reaction mass CuCl2 2H20 = 1.58g Row Aluminum wire Elemental copper 1 3.052 mass dry filter paper, 1.124 mass before rxn, & mass after rxn, 8 2 0.957 3.713 mass paper + Cu(s), At = 12min, 8 mass paper + Cu(s), At = 12min + 5min, 3.641 4 mass Al(s) lost.g mass Cu(s) produced, &...
I need an explanation of how to do these problems and the principles behind them Page...
I need an explanation of how to do these problems and the
principles behind them
Page < 3. The following equation describes the titration of KHP with NaOH "KHP) (a) If0.653 g of KHP is used, how many moles of KHP are present? imol КНР 204.22 g ?mol 0.653g ? mol 0.00320 mol KHP (b) The KHP solution is then titrated. Show what volume of NaOH was necessary to reach the equivalence point, based on the following readings. Initial Volume...
Solution Stoichiometry: The next step in the lab is to carefully measure out 25.00 mL of...
Solution Stoichiometry: The next step in the lab is to carefully measure out 25.00 mL of the 0.250 M Na2CO3 solution, and 30.00 mL of the 0.200 M CaCl2 solution, and mix them together. Use Reaction Stoichiometry to predict the limiting reactant in the reaction, and the amount in grams of calcium carbonate that we expect to precipitate (theoretical yield). Remember: M= mols solute / L solution Use the following table to help organize your information. 0.250 M Na2CO3 00.200M...
What I have so far for data etc. My question I need help with though is:...
What I have so far for data etc.
My question I need help with though is:
This is my data and what I have so far but this is the
question I actually need help with:
-What ions are present in the titrated solution after the
beginning of the titration but before the equivalence point? How
about after the equivalence point when the conductivity is rising?
Lastly, compare your results from 2 and 4 above with the actual
molarity of...
please help.
8 Use the information and examples provided in the Exploration to calculate how many moles of CaCh+2H20 are present in 150 g of CaCly 2H20 and then calculate how many moles of pure Cach are present in the 1.50 g of CaCl 2H2O. Record the answers in Data Table 1 Use the information and examples provided in the Exploration (and values input into Data Table 1, in step 8) to determine how many moles of Nazco, are necessary...
The example given the following problem:
I used 1.50 grams of the
CaCl2•2H2O.
I just want to make sure I did my calculations right?
Could someone please review my answers and provide appropriate
feedback my their answers to mine differ?
If they do, can you show your work.
A step-by-step example of this process, using the balanced equation from Figure 1, is shown below: CuSO4(aq)2NaOH(aq) -> Cu(OH)2(s) Na2SO4(aq) Assuming there are only 5.70 grams of CuSO4 available, how many grams...
Please help!! with question (18
,19, 20 )
the data is coming directly from
professor and i think she made a mistake because after I work out
problem I get theoritcal yeild of 0.850 grams
CaCO3 but the experiment actual yield is 8.322 grams (work out
question 12 )
Carbonate LI General Chemistry Lab I H.Y. & S.D. ame ata Sheet Section Date • Precipitating Cacos 1) Volume of Na2CO3, mL 8.22mL or 0.00824 2) Molarity of Na2CO3 solution, mol/L...
I just need help understanding the steps to get the
theoretical yeild and percent yield of CaCO3. using the given
information.
H.Y. & S. D. Precipitating Calcium Carbonate CHMI21 General Chemistry Lab 1 • Treatment of Data: 14) mole amount of Na CO, 15) mole amount of CaCl 16) limiting reagent .00832 00976 NonCO₃ .00735 .832 .au 112.98 mole amount of CaCO, 17) 18) 19) 20) Theoretical Yield (g) of Cacos Actual Yield (g) of Caco, Percent Yield (%) Calculations...
Name UULUUL. LULUI 2019 11. Use the molar masses provided to help solve the next two problems Molar Mass: CaCl2•2H20 = 147.02 g/mol NaCO3 = 105.99 g/mol Cacoa = 100.09 g/mol a. How many moles of Na2CO, are in a sample that contains 4.50 grams of Na2CO3? show calculation and use correct significant figures b. Students completed a reaction and they made chalk. CaCl2(aq) + Na2CO3(aq) → 2NaCl(aq) + CaCO3(s) If the students mixed together 1.33 grams of CaCl2.2H20 with...
I need help with row 4 & 5.
before after Data Table Complete the Data Table below. And then See ANSWER SHEET for Q3 rxn reaction mass CuCl2 2H20 = 1.58g Row Aluminum wire Elemental copper 1 3.052 mass dry filter paper, 1.124 mass before rxn, & mass after rxn, 8 2 0.957 3.713 mass paper + Cu(s), At = 12min, 8 mass paper + Cu(s), At = 12min + 5min, 3.641 4 mass Al(s) lost.g mass Cu(s) produced, &...
I need an explanation of how to do these problems and the
principles behind them
Page < 3. The following equation describes the titration of KHP with NaOH "KHP) (a) If0.653 g of KHP is used, how many moles of KHP are present? imol КНР 204.22 g ?mol 0.653g ? mol 0.00320 mol KHP (b) The KHP solution is then titrated. Show what volume of NaOH was necessary to reach the equivalence point, based on the following readings. Initial Volume...
Solution Stoichiometry: The next step in the lab is to carefully measure out 25.00 mL of the 0.250 M Na2CO3 solution, and 30.00 mL of the 0.200 M CaCl2 solution, and mix them together. Use Reaction Stoichiometry to predict the limiting reactant in the reaction, and the amount in grams of calcium carbonate that we expect to precipitate (theoretical yield). Remember: M= mols solute / L solution Use the following table to help organize your information. 0.250 M Na2CO3 00.200M...
What I have so far for data etc.
My question I need help with though is:
This is my data and what I have so far but this is the
question I actually need help with:
-What ions are present in the titrated solution after the
beginning of the titration but before the equivalence point? How
about after the equivalence point when the conductivity is rising?
Lastly, compare your results from 2 and 4 above with the actual
molarity of...
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