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PROBLEMS: Sketch a flow diagram for how you will answer the problem and provide the answer...
MOLARITY PROBLEMS: Sketch a flow diagram for how you will answer the problem and p the...
MOLARITY PROBLEMS: Sketch a flow diagram for how you will answer the problem and p the answer in grams of solute added. 3. You are requested to prepare 250mL of a 1.5M solution of NaCl.
13. Hydrogen Fluoride (HF) is a covalentens It is: ANonpolar B. Polar 14. Would you expect...
13. Hydrogen Fluoride (HF) is a covalentens It is: ANonpolar B. Polar 14. Would you expect water to dissolve Hydrogen Fluoride? A. Yes B. No 15. What is the best equation for the dissociation (ionization) using HF instead of HCl, understanding that HF is a WEAK electrolyte (and acid). A. HF(g) + H2O(l) HF (aq) B. HF(g) + H2O(1) - H +F C. HF(g) + H2O(l) HUF 16. You dissolve 1 mole of HF(g) in water and bring the volume...
Could you show how to go through problems 28-32 step by step and finally the answer...
Could you show how to go through problems 28-32 step by step and
finally the answer in order to understand it easier.
28. How many grams of NaOH are required to make 150. mL of a 0.300M NaOH solution? 29. How many moles of of HNO3 are present in 100. mL of 0.35 M HNO, solution? 30. Ir distilled water is added to increase the volume of a 0.60 M NaOH from 3.0 L to 9.0 L, what is the...
How many grams of CaCl2 are needed to make 610.3 g of a solution that is...
How many grams of CaCl2 are needed to make 610.3 g of a solution that is 36.5% (mm) calcium chloride in water? Note that mass is not technically the same thing as weight, but (m/m) has the same meaning as (w/w). Number g Cac How many grams of water are needed to make this solution? Number b) What is the volume percent % v/ alcohol in 739 mL of water? (Assume that volumes are additive.) of an alcohol solution made...
How many grams of CaCl2 are needed to make 853.6 g of a solution that is...
How many grams of CaCl2 are needed to make 853.6 g of a solution that is 31.0% (m/m) calcium chloride in water? Note that mass is not technically the same thing as weight, but (m/m) has the same meaning as (w/w). How many grams of water are needed to make this solution? What is the volume percent % (v/v) of an alcohol solution made by dissolving 109 mL of isopropyl alcohol in 741 mL of water? (Assume that volume are...
12) You are preparing 960.0 grams of an aqueous solution that contains that contains 32.00% by...
12) You are preparing 960.0 grams of an aqueous solution that contains that contains 32.00% by weight of Na2CO3. What mass of solute would you use and what mass of solvent would you use? [4 points) ider 13) What is the weight percent of a calcium chloride (CaCl2] solution that is made by dissolving 151.6 grams of CaCl in 648.4 grams of water? [4 points) 14) Calculate the new molarity of a 20.0-ml sample of 4.50 M MgCl2 solution that...
Hydrates: 1a. Calcium chloride (CaCl2) is available; the procedure calls for an 8% CaCl2•10 H20 solution....
Hydrates: 1a. Calcium chloride (CaCl2) is available; the procedure calls for an 8% CaCl2•10 H20 solution. What would be the procedure for making 2,000 mL of the desired concentration? 1b. How many grams of CuSO4•5 H20 are needed to make 1 L of a 1% solution of CuSO4? 1c. How many grams of Co(NO3)2•6 H2O are needed in preparing 400 mL of a 0.02% solution of Co(NO3)2? 1d. A 9% CuSO4 (anhydrous) solution is made up by dissolving 9 g...
Solution, dilution, concentration problems: Please answer 1-5 and show all work 1. How many grams of...
Solution, dilution, concentration problems: Please answer 1-5 and show all work 1. How many grams of MgCl2 are required to prepare 200 ml of a 0.35 M solution (MW of MgCl2 = 95.2)? 2. Express the concentration of the solution in problem #1 in terms of g/liter. 3. Express the concentration of the solution in problem #1 in terms of %w/v. 4. A solution contains 160.0 g of ferrous ammonium sulfate (MW = 392.1) in 500 ml of solution. What...
9. A laboratory assistant needs to prepare 225 ml of 0.150 M CaCl: solution. How many...
9. A laboratory assistant needs to prepare 225 ml of 0.150 M CaCl: solution. How many grams of calcium chloride will she need? (molar mass calcium chloride -110.98 g/mol) 10. What volume of water (in mL) is needed to dilute to the concentrations of each solute below: a. 0.250 M of HF to 20.0 mL of 0.143M b. 0.560 M NaOH to 43.6 mL of 0.250 M I1. Part A. What intermolecular force(s) is responsible for holding each of the...
I’m confused about part b. Am I supposed to do a mole to mole conversion? 1....
I’m confused about part b. Am I supposed to do a mole to mole
conversion?
1. Describe how you would make 500.0mL of 0.00400 M HCl from 0.0100M HC1? 2. Assume that you did an experiment and determine that a solution had a chloride ion concentration of 0.20 M. a. How many grams of chloride would be present in 50.0 mL of that solution? b. If the chloride in Part a. was the result of dissolving calcium chloride in the...
MOLARITY PROBLEMS: Sketch a flow diagram for how you will answer the problem and p the answer in grams of solute added. 3. You are requested to prepare 250mL of a 1.5M solution of NaCl.
13. Hydrogen Fluoride (HF) is a covalentens It is: ANonpolar B. Polar 14. Would you expect water to dissolve Hydrogen Fluoride? A. Yes B. No 15. What is the best equation for the dissociation (ionization) using HF instead of HCl, understanding that HF is a WEAK electrolyte (and acid). A. HF(g) + H2O(l) HF (aq) B. HF(g) + H2O(1) - H +F C. HF(g) + H2O(l) HUF 16. You dissolve 1 mole of HF(g) in water and bring the volume...
Could you show how to go through problems 28-32 step by step and
finally the answer in order to understand it easier.
28. How many grams of NaOH are required to make 150. mL of a 0.300M NaOH solution? 29. How many moles of of HNO3 are present in 100. mL of 0.35 M HNO, solution? 30. Ir distilled water is added to increase the volume of a 0.60 M NaOH from 3.0 L to 9.0 L, what is the...
How many grams of CaCl2 are needed to make 610.3 g of a solution that is 36.5% (mm) calcium chloride in water? Note that mass is not technically the same thing as weight, but (m/m) has the same meaning as (w/w). Number g Cac How many grams of water are needed to make this solution? Number b) What is the volume percent % v/ alcohol in 739 mL of water? (Assume that volumes are additive.) of an alcohol solution made...
How many grams of CaCl2 are needed to make 853.6 g of a solution that is 31.0% (m/m) calcium chloride in water? Note that mass is not technically the same thing as weight, but (m/m) has the same meaning as (w/w). How many grams of water are needed to make this solution? What is the volume percent % (v/v) of an alcohol solution made by dissolving 109 mL of isopropyl alcohol in 741 mL of water? (Assume that volume are...
12) You are preparing 960.0 grams of an aqueous solution that contains that contains 32.00% by weight of Na2CO3. What mass of solute would you use and what mass of solvent would you use? [4 points) ider 13) What is the weight percent of a calcium chloride (CaCl2] solution that is made by dissolving 151.6 grams of CaCl in 648.4 grams of water? [4 points) 14) Calculate the new molarity of a 20.0-ml sample of 4.50 M MgCl2 solution that...
9. A laboratory assistant needs to prepare 225 ml of 0.150 M CaCl: solution. How many grams of calcium chloride will she need? (molar mass calcium chloride -110.98 g/mol) 10. What volume of water (in mL) is needed to dilute to the concentrations of each solute below: a. 0.250 M of HF to 20.0 mL of 0.143M b. 0.560 M NaOH to 43.6 mL of 0.250 M I1. Part A. What intermolecular force(s) is responsible for holding each of the...
I’m confused about part b. Am I supposed to do a mole to mole
conversion?
1. Describe how you would make 500.0mL of 0.00400 M HCl from 0.0100M HC1? 2. Assume that you did an experiment and determine that a solution had a chloride ion concentration of 0.20 M. a. How many grams of chloride would be present in 50.0 mL of that solution? b. If the chloride in Part a. was the result of dissolving calcium chloride in the...
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