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Help! What is the moality of a solution made from 5.61 moles of KCl and 2.11 kg of water?
Homework Answers
Calculate the moles of Cl- in a beaker with 5mL of .05M KCl, 10mL of water,...
Calculate the moles of Cl- in a beaker with 5mL of .05M KCl, 10mL of water, and 1mL of K2CrO4? Moles of Ag+ = moles of Cl=. What is the molarity of silver ion in solution A. Solution A has saturated AgC2H3O2 in water. It was titrated in a beaker with 5mL of .05M KCl, 10mL of water, and 1mL of K2CrO4. The volume that was titrated into the beaker was 4.7mL. Using the molarity of silver ion we found...
Calculate the molarity of the two solutions. The first solution contains 0.550 mol of NaOH in...
Calculate the molarity of the two solutions. The first solution contains 0.550 mol of NaOH in 2.95 L of solution. molarity: The second solution contains 19.1 g of NaCl in 627 mL of solution. molarity: Calculate the molality of a solution formed by adding 7.00 g NH,Cl to 14.0 g of water. molality: m NH C1 What is the mole fraction of solute in a 3.69 m aqueous solution? Xsolute = 0.06 An aqueous sodium acetate, NaC,H,O, , solution is...
Please help me w th number 5 thank you! Refer to Exp 10 "Spectrophotometric Analysis of...
Please help me w th number 5 thank you!
Refer to Exp 10 "Spectrophotometric Analysis of Aspirin". Solution A is made by dissolving 250 mg of synthesized aspirin in 250.0 mL of water. Solution B is made by diluting 5.00 mL of Solution A to 100.0 mL with 0.02 M FeCl_3-KCl-HCl solution. Solution B shows an absorbance of 0.425 at 530 nm. Calculate the purity of synthesized aspirin using the provided Beer's Law graph of Aspirin.
can sormoen help pleasse A compound made of elements A and B, has a cubic unit...
can sormoen help pleasse
A compound made of elements A and B, has a cubic unit cell. There is an A atom at each corner of the cube and an A atom at the center of each face of the cube. There are eight B atoms that lie entirely within the unit cell. Based on this information, the empirical formula for the compound is: AB2 AB3 AB A₂B 1A4B2 Question 9 (4 points) Which of the following increases the solubility...
I need help solving these. I need to know the steps and calculations. 1. (1 pt)...
I need help solving these. I need to know the steps
and calculations.
1. (1 pt) How many moles of K2S are 2.70 g K,S? 2. (1 pt) What is the mass of 4.26 g of K2S? 3. (1 pt) How many atoms of Cu are in 7.1 moles of Cu? 4. (1 pt) How many moles of C are in 5.80 x 10atoms of C? 5. (2 pts) How many atoms of Fe are in 81.4 g Fe? 6....
please help with this 2CBN Mass of evaporating dish Volume of KCl solution Mass of evaporating dish and KCl solution...
please help with this
2CBN Mass of evaporating dish Volume of KCl solution Mass of evaporating dish and KCl solution Mass of evaporating dish and dry KCI (1" heating) Mass of evaporating dish and dry KCI (2 heating) 54 345 595 mL 62 245 g 555489 55 5379 Using the data above, calculate the mass percent of KCl in the original KCl/water solution Show all work
•How many N atoms would be present in 0.378 moles of N2O? •2. If you have...
•How many N atoms would be present in 0.378 moles of N2O? •2. If you have 4.55 x 1016 NO2 molecules, how many moles would you have? •3. How many grams would you need in order to have 0.885 moles of CuCO3? •4. If you have a 15.0 g sample of PF5, how many PF5 molecules would be in your sample? •5. If you have 3.14 x 1019 FeCl2 molecules, how many milligrams would you have? •6. What is the...
Help me with this A batch of 100 KCI is dissolved in sufficient water to make...
Help me with this
A batch of 100 KCI is dissolved in sufficient water to make a saturated at 363 K, where the solubility is 35 wt. % KCl in water. The solution is cooled to 293 K, at which temperature its solubility is 25.4 wt. %. a) What is the weight of water required for solution and the weight of crystals of KCI obtained? b) What is the weight of crystals obtained if 5 wt. % of the original...
i need help with the calculations from the first part of the lab Freezing Point Depression...
i need help with the calculations from the first part of the
lab
Freezing Point Depression Name Part A. Initial Freezing Point of Water 0°C 0°C 0°C Mass of water 10. 09 0.0 g 10.09 Mass of Ethylene Glycol 0.5 g 1.0 9 1 .5 9 Molecular weight of Ethylene Glycol 62.1 g/mol moles of Ethylene Glycol molem ole mole kg of water in solution kgkgl molality of solution Final Freezing Point of solution Change in Freezing Point ke value...
please help me calculate the mole fraction for this question!! MALL HELE PRESE BE Mole fraction...
please help me calculate the mole fraction for this
question!!
MALL HELE PRESE BE Mole fraction of KCl in a solution containing 10 g of it (i.e. KCI) (atomic mass of KCL = 74.5) in 100 g of water is
Calculate the molarity of the two solutions. The first solution contains 0.550 mol of NaOH in 2.95 L of solution. molarity: The second solution contains 19.1 g of NaCl in 627 mL of solution. molarity: Calculate the molality of a solution formed by adding 7.00 g NH,Cl to 14.0 g of water. molality: m NH C1 What is the mole fraction of solute in a 3.69 m aqueous solution? Xsolute = 0.06 An aqueous sodium acetate, NaC,H,O, , solution is...
Please help me w th number 5 thank you!
Refer to Exp 10 "Spectrophotometric Analysis of Aspirin". Solution A is made by dissolving 250 mg of synthesized aspirin in 250.0 mL of water. Solution B is made by diluting 5.00 mL of Solution A to 100.0 mL with 0.02 M FeCl_3-KCl-HCl solution. Solution B shows an absorbance of 0.425 at 530 nm. Calculate the purity of synthesized aspirin using the provided Beer's Law graph of Aspirin.
can sormoen help pleasse
A compound made of elements A and B, has a cubic unit cell. There is an A atom at each corner of the cube and an A atom at the center of each face of the cube. There are eight B atoms that lie entirely within the unit cell. Based on this information, the empirical formula for the compound is: AB2 AB3 AB A₂B 1A4B2 Question 9 (4 points) Which of the following increases the solubility...
I need help solving these. I need to know the steps
and calculations.
1. (1 pt) How many moles of K2S are 2.70 g K,S? 2. (1 pt) What is the mass of 4.26 g of K2S? 3. (1 pt) How many atoms of Cu are in 7.1 moles of Cu? 4. (1 pt) How many moles of C are in 5.80 x 10atoms of C? 5. (2 pts) How many atoms of Fe are in 81.4 g Fe? 6....
please help with this
2CBN Mass of evaporating dish Volume of KCl solution Mass of evaporating dish and KCl solution Mass of evaporating dish and dry KCI (1" heating) Mass of evaporating dish and dry KCI (2 heating) 54 345 595 mL 62 245 g 555489 55 5379 Using the data above, calculate the mass percent of KCl in the original KCl/water solution Show all work
Help me with this
A batch of 100 KCI is dissolved in sufficient water to make a saturated at 363 K, where the solubility is 35 wt. % KCl in water. The solution is cooled to 293 K, at which temperature its solubility is 25.4 wt. %. a) What is the weight of water required for solution and the weight of crystals of KCI obtained? b) What is the weight of crystals obtained if 5 wt. % of the original...
i need help with the calculations from the first part of the
lab
Freezing Point Depression Name Part A. Initial Freezing Point of Water 0°C 0°C 0°C Mass of water 10. 09 0.0 g 10.09 Mass of Ethylene Glycol 0.5 g 1.0 9 1 .5 9 Molecular weight of Ethylene Glycol 62.1 g/mol moles of Ethylene Glycol molem ole mole kg of water in solution kgkgl molality of solution Final Freezing Point of solution Change in Freezing Point ke value...
please help me calculate the mole fraction for this
question!!
MALL HELE PRESE BE Mole fraction of KCl in a solution containing 10 g of it (i.e. KCI) (atomic mass of KCL = 74.5) in 100 g of water is
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