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Please answer question 14
13. (1 pt.) Assuming that you started with exactly 0.065g of benzoic...
13.) You mix 44.0 mL of 0.070 M NaOH with 22.0ml of 0.14M benzoic acid (Ka=6.3x10^-5)....
13.) You mix 44.0 mL of 0.070 M NaOH with 22.0ml of 0.14M benzoic acid (Ka=6.3x10^-5). What molecules and ions exist in this solution? List them in order of decreasing concentration. To do this answer the following questions. How many moles of C6H5CO2H were added to the mixture? How many moles of NaOH was added to the mixture? What is the prodominant solute present in solution after mixing the benzoic acid and NaOH solution? A.) NaOH B.) NaHCO2 C.) HCO2H...
1.2 pts.) Complete the following (assume that mass and weight are equivalents), a) The weight of...
1.2 pts.) Complete the following (assume that mass and weight are equivalents), a) The weight of your alcohol that you started with = 1. 9 b) The molecular weight of your alcohol = 102.17 gimo ne number of moles of your alcohol in your sample that you used to start the reaction = 0.01297 more d) The number of molecules of your alcohol in your sample that you used to start the reaction = (6.023 x 10 molecules 0.01297 moles)...
6 pt Question 12 Assuming that FeCl is the limiting reagent, how many moles of BeCl2...
6 pt Question 12 Assuming that FeCl is the limiting reagent, how many moles of BeCl2 will the following reaction produce if you start with 81 g of FeCl3? The molecular weight of FeCl3 is 162 g/mol 2 FeCl3 + _Be(OH)2 --> 3 BeCl2 + 2 Fe(OH)3 O 0.5 moles 0.33 moles 0.75 moles 30 moles Question 13 14 pts O BI @ E
Calculate the percent yield of your product assuming you started with 0.545 grams of Al metal...
Calculate the percent yield of your product assuming you started with 0.545 grams of Al metal and collect 5.25 grams of alum product? 1) Calculate the number of moles of Al used in your reaction. 2) Calculate the molar mass of alum, potassium aluminum sulfate dodecahydrate (do not forget to include the associated water in you molar mass calculation). 3) This experiment has been set up such that Al is the limiting reagent,(determines the maximum amount of product that could...
can you please explain this step by step better than my teacher did? Show me exactly...
can you please explain this step by step better than my teacher
did? Show me exactly how he got his equations and values and where
they came from. sometimes he skips steps and assume we know what he
did
6. A ball is launched from a window 200 meters above the ground at an angle of 25° at a speed of 14 m/s a. Setup the problem and determine the equations of motion. b. Describe how you will determine the...
Please Show All Work SHOW ALL UNITS IN YOUR CALCULATIONS AND ANSWERS FOR CREDIT 1. The...
Please Show All Work
SHOW ALL UNITS IN YOUR CALCULATIONS AND ANSWERS FOR CREDIT 1. The mass of a single atom of an unknown element is 1.792x1022 grams. Answer the following questions about this unknown element. a) What is the mass of one atom of the unknown element in atomic mass units (amu)? Hint: 1 amu 1.661x1024 g (3 pts) Answer: b) How many atoms of this unknown element are there in 1.00 mole of this element? (1 pt) Answer:...
please answer questions 1-8, I don't know what i'm doing wrong :( Congratulations! You have just...
please answer questions 1-8, I don't know what i'm doing wrong
:(
Congratulations! You have just been hired as a researcher by the PRUB Chemical Company Because of the large number of people eating spicy foods (and often eating them too fast), this company has asked you to develop a new antacid. They have given you some information, but the rest you must discover for yourself. Your boss has suggested that aluminum hydroxide may be effective as an antacid. This...
please show all work Question 3 (13 points) In a survey of 1002 people, 70% said...
please show all work
Question 3 (13 points) In a survey of 1002 people, 70% said that they voted in a recent presidential election. Answer the questions to construct and interpret a 95% confidence interval for the true percentage of people who say they voted. a. (1 pt.) What parameter are you estimating? (p or u) b. (1 pt.) Give the point estimate that you will use. c. (3 pts.) Compute the margin of error. Show your work! d. (1...
14 Lab Moles A. ELEMENT - ALUMINUM Procedure: Use a top loading balance and record your...
14 Lab Moles A. ELEMENT - ALUMINUM Procedure: Use a top loading balance and record your mass to 0.01g. Show all your calculations with correct significant figures and units. 1. Find and record the mass of one mole of aluminum: PT 26.980 2. Find and record the mass of an aluminum can: 160.25 a 3. Answer the following questions: Does the aluminum sample contain more than, less than, or exactly one mole of aluminum? Explain. The aluminum can contaivis less...
EXPERIMENT # 14 Assuming Na2CO, is the limiting reactant, how many grams of NaCl can be...
EXPERIMENT # 14 Assuming Na2CO, is the limiting reactant, how many grams of NaCl can be produced from the amount of Na2CO, used in this experiment? Show calculations below: 8 Assuming HCI is the limiting reactant, how many gran of NaCl can be produced from the amount of HCI user this experiment? Show calculations below: 8 Which reactant is limiting? Which reactant is excess? 8 Actual yield of NaCl 8 Theoretical yield of NaCl % Percent yield of NaCl Show...
1.2 pts.) Complete the following (assume that mass and weight are equivalents), a) The weight of your alcohol that you started with = 1. 9 b) The molecular weight of your alcohol = 102.17 gimo ne number of moles of your alcohol in your sample that you used to start the reaction = 0.01297 more d) The number of molecules of your alcohol in your sample that you used to start the reaction = (6.023 x 10 molecules 0.01297 moles)...
6 pt Question 12 Assuming that FeCl is the limiting reagent, how many moles of BeCl2 will the following reaction produce if you start with 81 g of FeCl3? The molecular weight of FeCl3 is 162 g/mol 2 FeCl3 + _Be(OH)2 --> 3 BeCl2 + 2 Fe(OH)3 O 0.5 moles 0.33 moles 0.75 moles 30 moles Question 13 14 pts O BI @ E
can you please explain this step by step better than my teacher
did? Show me exactly how he got his equations and values and where
they came from. sometimes he skips steps and assume we know what he
did
6. A ball is launched from a window 200 meters above the ground at an angle of 25° at a speed of 14 m/s a. Setup the problem and determine the equations of motion. b. Describe how you will determine the...
Please Show All Work
SHOW ALL UNITS IN YOUR CALCULATIONS AND ANSWERS FOR CREDIT 1. The mass of a single atom of an unknown element is 1.792x1022 grams. Answer the following questions about this unknown element. a) What is the mass of one atom of the unknown element in atomic mass units (amu)? Hint: 1 amu 1.661x1024 g (3 pts) Answer: b) How many atoms of this unknown element are there in 1.00 mole of this element? (1 pt) Answer:...
please answer questions 1-8, I don't know what i'm doing wrong
:(
Congratulations! You have just been hired as a researcher by the PRUB Chemical Company Because of the large number of people eating spicy foods (and often eating them too fast), this company has asked you to develop a new antacid. They have given you some information, but the rest you must discover for yourself. Your boss has suggested that aluminum hydroxide may be effective as an antacid. This...
please show all work
Question 3 (13 points) In a survey of 1002 people, 70% said that they voted in a recent presidential election. Answer the questions to construct and interpret a 95% confidence interval for the true percentage of people who say they voted. a. (1 pt.) What parameter are you estimating? (p or u) b. (1 pt.) Give the point estimate that you will use. c. (3 pts.) Compute the margin of error. Show your work! d. (1...
14 Lab Moles A. ELEMENT - ALUMINUM Procedure: Use a top loading balance and record your mass to 0.01g. Show all your calculations with correct significant figures and units. 1. Find and record the mass of one mole of aluminum: PT 26.980 2. Find and record the mass of an aluminum can: 160.25 a 3. Answer the following questions: Does the aluminum sample contain more than, less than, or exactly one mole of aluminum? Explain. The aluminum can contaivis less...
EXPERIMENT # 14 Assuming Na2CO, is the limiting reactant, how many grams of NaCl can be produced from the amount of Na2CO, used in this experiment? Show calculations below: 8 Assuming HCI is the limiting reactant, how many gran of NaCl can be produced from the amount of HCI user this experiment? Show calculations below: 8 Which reactant is limiting? Which reactant is excess? 8 Actual yield of NaCl 8 Theoretical yield of NaCl % Percent yield of NaCl Show...
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