Need help please.
22. I believe a. is 2 moles and b. is 2 moles
23. 2 moles of Ben gives 1 mole of product= which should equal
121.65 grams. But need help not sure if they are correct and I
don't know 24.
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Need help please.
22. I believe a. is 2 moles and b. is 2 moles
23....
1. (15 points) A student in an organic ch points) A student in an organic chemistry...
1. (15 points) A student in an organic ch points) A student in an organic chemistry lab prepared dibenzalacetone according to the following chemical res following chemical reaction using excess base. It is important that the molar ratio of the reactants in this reaction be 2:1. NaOll heat (-2 ,0) 234.30 g/mol 58.08 g/mol 106.23 g/mol a) If the student started with 1.06 g of benzaldehyde and 0.29 g of acetone, what is the theoretical yield of the product? b)...
help with All 8 questions please Question 13 2 pts How many moles of carbon are...
help with All 8 questions please
Question 13 2 pts How many moles of carbon are there in 19.3 g of sucrose, CH120.? Use 180.16 g/mol as the mw of ose. Give your answer three decimal places. su Question 14 3 pts A sample of C6H12 has 34.5 g of carbon. How many moles of CH 12 are there? Use 12.01 g/mol as the mw of carbon and 84.16 g/mol as the mw of C6H12. Give your answer to three...
Please refer to the Aldol Condensation experiment in your lab manual (page 89) • Calculate the...
Please refer to the Aldol Condensation experiment in your lab manual (page 89) • Calculate the amounts of all chemicals needed in measurable amounts (i.e. grams or milliliters rather than moles.) • Determine the theoretical yield for the reaction. Mixture A: Prepare a solution of 5g of sodium hydroxide dissolved in Du and 40ml of ethanol at room temperature in a 250 ml Erlenmeyer flask. Mixture B: Mix 5.1 ml(5.31 g) of benzaldehyde (MW 106 g/mol; d = 1.04 g/ml)...
I need help with part B Explanation: A mole ratio is the ratio between the amounts in moles of any two compounds invol...
I need help with part B
Explanation:
A mole ratio is the ratio between the amounts in moles of any
two compounds involved in a chemical reaction. The mole ratio can
be determined by examining the coefficients in front of formulas in
a balanced chemical equation.
Step 1: write the balanced chemical
equation.
Sb2S3(s) + 3Fe(s)→2Sb(s) +3FeS(s)
Step 2: calculate the moles of
Sb2S3 , Fe
Moles of Fe = mass given / molar mass = ( 25 g
/...
help with all 8 Please! here you go Quins DHE Duration 4 10:44 Question 5 2...
help with all 8 Please!
here you go
Quins DHE Duration 4 10:44 Question 5 2 pts A molecule is polar if: There is an overall dipole moment to the molecule. the molecule is charged the overall dipole moment is zero the centers of negative and positive charge are not in the same place. Question 6 3 pts Choose all of the following that have the same number of carbon atoms as 1 mole of CoHo. 6 moles of CO2...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got Mol-aria Why? Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction. This is called Stoichiometry- (stoi-key-ah-meh-tree) Another way of looking at it is using the mole ratio from the balanced equation and information about one compound in the reaction to determine information about another compound in the equation. A mole ratio...
I did an experiment where I synthesized 2-phenyl-2-propanol using the grignard reaction. please help me answer these lab questions Reagents Moles of Reagent 0.00142 moles (0.224 g)bromoben...
I did an experiment where I synthesized
2-phenyl-2-propanol using the grignard reaction. please help me
answer these lab questions
Reagents Moles of Reagent 0.00142 moles (0.224 g)bromobenzene 0.00712 mol (0.173 g) 2 mL of THF (n/a moles) tetrahydrofuran 0.00142 mol (0.083g, 0.11mL) acetone, HPLC grade, anh Reagent Name FW 157.75 24.31 n/a 58 Comments Mg powder grind before using must be anhydrous must be anhydrous Pre-Lab Assignment: 1. Determine the volume (mL) of bromobenzene needed for the experiment. Obtain the...
please provide explanation 23) How much CNO3)2 should be weighed out to have 0.650 A) 66.4 g B) 9768 C) 107 g D) 13...
please provide explanation
23) How much CNO3)2 should be weighed out to have 0.650 A) 66.4 g B) 9768 C) 107 g D) 133 E) 1653 24) How many moles of Nalios are present in a 200 g mle? A) 2.38 10-2 mol B) 1.27 - 10-2 mol C) 2.00 mol D) 850 mol E) 168 mol 25) The number of grams in 265 ml of S02 A) 265 0242 D) 170 1501034
Date: Period: Name: You Try... 4. Given the following chemical equation 4P + 50; → 2...
Date: Period: Name: You Try... 4. Given the following chemical equation 4P + 50; → 2 PO (a) How many moles of P,0, are formed from 3.4 moles of O,? SHOW the math below (b) How many moles of P are needed to react with 30,1 moles of O,? SHOW the math below. 5. Aluminum reacts with copper(ll) chloride to make aluminum chloride and copper (a) Write the balanced equation (b) Given 6 moles of Cuch, how many moles of...
i need help with all these questions please Question 23 4 pts Which of these liquids...
i need help with all these questions please
Question 23 4 pts Which of these liquids is most likely to have the lowest (slowest) rate of evaporation (g/min) and why? Select the single best answer. H H H HH :01 IH terbaru H 11 HHH cnc- 7 H H H ica H 나 Hit 4 c B A ΟΟΟΟΟΟ C, because it has the highest molar mass. A, because this molecule has the lowest molar mass.. B, because it has...
1. (15 points) A student in an organic ch points) A student in an organic chemistry lab prepared dibenzalacetone according to the following chemical res following chemical reaction using excess base. It is important that the molar ratio of the reactants in this reaction be 2:1. NaOll heat (-2 ,0) 234.30 g/mol 58.08 g/mol 106.23 g/mol a) If the student started with 1.06 g of benzaldehyde and 0.29 g of acetone, what is the theoretical yield of the product? b)...
help with All 8 questions please
Question 13 2 pts How many moles of carbon are there in 19.3 g of sucrose, CH120.? Use 180.16 g/mol as the mw of ose. Give your answer three decimal places. su Question 14 3 pts A sample of C6H12 has 34.5 g of carbon. How many moles of CH 12 are there? Use 12.01 g/mol as the mw of carbon and 84.16 g/mol as the mw of C6H12. Give your answer to three...
Please refer to the Aldol Condensation experiment in your lab manual (page 89) • Calculate the amounts of all chemicals needed in measurable amounts (i.e. grams or milliliters rather than moles.) • Determine the theoretical yield for the reaction. Mixture A: Prepare a solution of 5g of sodium hydroxide dissolved in Du and 40ml of ethanol at room temperature in a 250 ml Erlenmeyer flask. Mixture B: Mix 5.1 ml(5.31 g) of benzaldehyde (MW 106 g/mol; d = 1.04 g/ml)...
I need help with part B
Explanation:
A mole ratio is the ratio between the amounts in moles of any
two compounds involved in a chemical reaction. The mole ratio can
be determined by examining the coefficients in front of formulas in
a balanced chemical equation.
Step 1: write the balanced chemical
equation.
Sb2S3(s) + 3Fe(s)→2Sb(s) +3FeS(s)
Step 2: calculate the moles of
Sb2S3 , Fe
Moles of Fe = mass given / molar mass = ( 25 g
/...
help with all 8 Please!
here you go
Quins DHE Duration 4 10:44 Question 5 2 pts A molecule is polar if: There is an overall dipole moment to the molecule. the molecule is charged the overall dipole moment is zero the centers of negative and positive charge are not in the same place. Question 6 3 pts Choose all of the following that have the same number of carbon atoms as 1 mole of CoHo. 6 moles of CO2...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got Mol-aria Why? Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction. This is called Stoichiometry- (stoi-key-ah-meh-tree) Another way of looking at it is using the mole ratio from the balanced equation and information about one compound in the reaction to determine information about another compound in the equation. A mole ratio...
I did an experiment where I synthesized
2-phenyl-2-propanol using the grignard reaction. please help me
answer these lab questions
Reagents Moles of Reagent 0.00142 moles (0.224 g)bromobenzene 0.00712 mol (0.173 g) 2 mL of THF (n/a moles) tetrahydrofuran 0.00142 mol (0.083g, 0.11mL) acetone, HPLC grade, anh Reagent Name FW 157.75 24.31 n/a 58 Comments Mg powder grind before using must be anhydrous must be anhydrous Pre-Lab Assignment: 1. Determine the volume (mL) of bromobenzene needed for the experiment. Obtain the...
please provide explanation
23) How much CNO3)2 should be weighed out to have 0.650 A) 66.4 g B) 9768 C) 107 g D) 133 E) 1653 24) How many moles of Nalios are present in a 200 g mle? A) 2.38 10-2 mol B) 1.27 - 10-2 mol C) 2.00 mol D) 850 mol E) 168 mol 25) The number of grams in 265 ml of S02 A) 265 0242 D) 170 1501034
Date: Period: Name: You Try... 4. Given the following chemical equation 4P + 50; → 2 PO (a) How many moles of P,0, are formed from 3.4 moles of O,? SHOW the math below (b) How many moles of P are needed to react with 30,1 moles of O,? SHOW the math below. 5. Aluminum reacts with copper(ll) chloride to make aluminum chloride and copper (a) Write the balanced equation (b) Given 6 moles of Cuch, how many moles of...
i need help with all these questions please
Question 23 4 pts Which of these liquids is most likely to have the lowest (slowest) rate of evaporation (g/min) and why? Select the single best answer. H H H HH :01 IH terbaru H 11 HHH cnc- 7 H H H ica H 나 Hit 4 c B A ΟΟΟΟΟΟ C, because it has the highest molar mass. A, because this molecule has the lowest molar mass.. B, because it has...
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