Can someone please help me with questions 2 and 3?
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Can someone please help me with questions 2 and 3?
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Calculate the boiling point (in oC) of a calcium nitrate (Ca(NO3)2; 164.1g/mol) solution with a concentration...
Calculate the boiling point (in oC) of a calcium nitrate (Ca(NO3)2; 164.1g/mol) solution with a concentration of 1.45 molarity. The solution has a density of 1.12 g/mL. Water has a boiling point elevation constant of 0.512 oC/m. (assume 1 atm total external pressure & idea behavior) my answer 101.8432 please explain and tell me where is my mistake
A solution of ethylene glycol in water at 20.0°C has a mass percent of 8.25% of...
A solution of ethylene glycol in water at 20.0°C has a mass percent of 8.25% of ethylene glycol with a density of 1.0087 g/mL. The freezing point depression constant for water (which you can assume is the solvent for all solutions) is K1.86°C kg/mol and the boiling point elevation constant is Kb the following: 0.512°C kg/mol. The density of neat water at 20.0°C is 0.9982 g/ml. Answer 1. What is the molarity of the solution? 2. What is the molality...
1) At physiological temperature (37OC) the osmotic pressure of blood is 7.65 atm. What concentration (%...
1) At physiological temperature (37OC) the osmotic pressure of blood is 7.65 atm. What concentration (% W/V) of potassium chloride (KCl, MW = 74.5) solution has the same osmotic pressure of blood? Assume the specific gravity of the solution is 1. 2)An ophthalmic (eye drop) formulation contains 100 mEq of sodium chloride (molecular weight = 58.5 g/mole). Calculate the amount (in grams) of sodium chloride needed for the formulation. 3)Methanol (CH3OH, MW = 32) is a nonelectrolyte. What is the...
help please Pre-laboratory assignment: Due Friday, March 27, 2020 1. Draw the reaction scheme for this...
help please
Pre-laboratory assignment: Due Friday, March 27, 2020 1. Draw the reaction scheme for this reaction. 2. Complete the following table of reagents for the dehydration of 2-methylcyclohexanol: | Molecular weight (g/mol) Density (g/mL) Mass Moles Volume (ml) Reagent 2-methylcyclohexanol CHO Dehydration products (CH) Role in the reaction Limiting reagent Product 3. List the safety precautions that must be observed when using concentrated sulfuric and phosphoric acids. 4. What are the boiling points of 2-methylcyclohexanol and methylcyclohexene? 5. Why...
Review Constants Periodic Table The changes in boiling point (AT) or freezing point (AT) in degrees...
Review Constants Periodic Table The changes in boiling point (AT) or freezing point (AT) in degrees Celsius from a pure solvent can be determined from the equations given here, respectively: Value Units moles of solute AT = mx Kb = 7 Submit kilograms of solvent XRb moles of solutex Kf Part B AT: = mx Kf = kilograms of solvent where m is the molality of the solution, and K and K the boiling-point-elevation and freezing-point-depression constants for the solvent,...
PLEASE HELP! Dealing with molality and pressure Calculate the morality of a solution containing 0.755 mol...
PLEASE HELP! Dealing with molality and pressure
Calculate the morality of a solution containing 0.755 mol glucose and 1.75 kg of water. 0.875 m 0.583 m 0.431 m 580 m 0.850 m What mass of a 0.66 m ammonium nitrate(80.04 g/mol) solution will contain 0.15 mol of solute? 227 g 239 g 440 g 493 g 4453 g What is the morality of a sucrose (C_12H_22O_11) solution that produces an osmotic pressure of 2.65 atm at 25 degree C? 0.0349...
Please help me solve this problem. (5 points) Table 1: Heat Content of a Snack Food...
Please help me solve this problem.
(5 points) Table 1: Heat Content of a Snack Food using Calorimetry-see below for calculations PROPERTY TRIAL1 TRIAL 2 TRİAL3 Dorito Snack Used Volume of water (mL) Mass of water (g) Mass of snack (g) Initial temperature (°C) Final temperature (°C) Change in temperature (°C) Heat absorbed by water (cal) 9 ml 个1 19 ml 991 o 346 24.5 33.1 c 8,6 C 2 53 04Ss 24.S C 37.S Heat released by snack (food...
QUESTION 2 A recipe for homemade candy calls for 83 g of sugar (CH::O..) to be...
QUESTION 2 A recipe for homemade candy calls for 83 g of sugar (CH::O..) to be dissolved in 64 ml of water and heated to boiling. Assuming a density of 1.00 g/ml, what is the boiling point of this mixture? Show your work (Hint: pure water boils at 100 C) AT8=K* molality K (H2O) = 0.512 °C/ molal (sucrose) = 1 For the following reaction, the rate of disappearance of -2 Cl2 is 4.24 x 10 M/s. What is the...
The following is not one of the basic units of the SI system: meter mole gram...
The following is not one of the basic units of the SI system: meter mole gram second ampere Currently, the total number of known elements is: 83 90 92 102 118 126 238 294 Concrete contains an aggregate, consisting of silicon dioxide (SiO_2) in the form of sand or gravel, together with cement, which is a combination of calcium silicates and alumni silicates. Accordingly, concrete can be classified as An element A compound A homogeneous mixture A heterogeneous mixture None...
Can someone please help me how to calculate the theoretical yield from this chart? I am...
Can someone please help me how to calculate the theoretical
yield from this chart?
I am so confused
This is the chart that I was given and Distillate V-2 is the
last part of the chart. This is the part of preparation and
reaction of alkene lab, and only using Distillate V-2 not V-1.
Compounds Molecular Density | Amounts moles Weight or used concentration (gm/mL) Cyclohexanol 0.9624 2.1 mL 20 mmol g/mol Phosphoric 97.994 1.88 0.7 ml 0.0134 acid g/mol...
A solution of ethylene glycol in water at 20.0°C has a mass percent of 8.25% of ethylene glycol with a density of 1.0087 g/mL. The freezing point depression constant for water (which you can assume is the solvent for all solutions) is K1.86°C kg/mol and the boiling point elevation constant is Kb the following: 0.512°C kg/mol. The density of neat water at 20.0°C is 0.9982 g/ml. Answer 1. What is the molarity of the solution? 2. What is the molality...
help please
Pre-laboratory assignment: Due Friday, March 27, 2020 1. Draw the reaction scheme for this reaction. 2. Complete the following table of reagents for the dehydration of 2-methylcyclohexanol: | Molecular weight (g/mol) Density (g/mL) Mass Moles Volume (ml) Reagent 2-methylcyclohexanol CHO Dehydration products (CH) Role in the reaction Limiting reagent Product 3. List the safety precautions that must be observed when using concentrated sulfuric and phosphoric acids. 4. What are the boiling points of 2-methylcyclohexanol and methylcyclohexene? 5. Why...
Review Constants Periodic Table The changes in boiling point (AT) or freezing point (AT) in degrees Celsius from a pure solvent can be determined from the equations given here, respectively: Value Units moles of solute AT = mx Kb = 7 Submit kilograms of solvent XRb moles of solutex Kf Part B AT: = mx Kf = kilograms of solvent where m is the molality of the solution, and K and K the boiling-point-elevation and freezing-point-depression constants for the solvent,...
PLEASE HELP! Dealing with molality and pressure
Calculate the morality of a solution containing 0.755 mol glucose and 1.75 kg of water. 0.875 m 0.583 m 0.431 m 580 m 0.850 m What mass of a 0.66 m ammonium nitrate(80.04 g/mol) solution will contain 0.15 mol of solute? 227 g 239 g 440 g 493 g 4453 g What is the morality of a sucrose (C_12H_22O_11) solution that produces an osmotic pressure of 2.65 atm at 25 degree C? 0.0349...
Please help me solve this problem.
(5 points) Table 1: Heat Content of a Snack Food using Calorimetry-see below for calculations PROPERTY TRIAL1 TRIAL 2 TRİAL3 Dorito Snack Used Volume of water (mL) Mass of water (g) Mass of snack (g) Initial temperature (°C) Final temperature (°C) Change in temperature (°C) Heat absorbed by water (cal) 9 ml 个1 19 ml 991 o 346 24.5 33.1 c 8,6 C 2 53 04Ss 24.S C 37.S Heat released by snack (food...
QUESTION 2 A recipe for homemade candy calls for 83 g of sugar (CH::O..) to be dissolved in 64 ml of water and heated to boiling. Assuming a density of 1.00 g/ml, what is the boiling point of this mixture? Show your work (Hint: pure water boils at 100 C) AT8=K* molality K (H2O) = 0.512 °C/ molal (sucrose) = 1 For the following reaction, the rate of disappearance of -2 Cl2 is 4.24 x 10 M/s. What is the...
The following is not one of the basic units of the SI system: meter mole gram second ampere Currently, the total number of known elements is: 83 90 92 102 118 126 238 294 Concrete contains an aggregate, consisting of silicon dioxide (SiO_2) in the form of sand or gravel, together with cement, which is a combination of calcium silicates and alumni silicates. Accordingly, concrete can be classified as An element A compound A homogeneous mixture A heterogeneous mixture None...
Can someone please help me how to calculate the theoretical
yield from this chart?
I am so confused
This is the chart that I was given and Distillate V-2 is the
last part of the chart. This is the part of preparation and
reaction of alkene lab, and only using Distillate V-2 not V-1.
Compounds Molecular Density | Amounts moles Weight or used concentration (gm/mL) Cyclohexanol 0.9624 2.1 mL 20 mmol g/mol Phosphoric 97.994 1.88 0.7 ml 0.0134 acid g/mol...
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