Caffeine, C8H10N4O2, is a stimulant found in tea and coffee. A sample of the substance was dissolved in 45.0 g of chloroform, CHCl3, to give a 0.0946 m solution. How many grams of caffeine were in the sample

Q: calculate the mass percent of a solution prepared by dissolving 17.2 g of NaCI in 149 g of water

A: The answer to the following question is given as:

Q: What is the freezing point in degrees Celsius of a solution prepared by dissolving 15.6 g aluminum…

A: The freezing point of a substance represents the temperature at which there exists an equilibrium…

Q: Calculate the molarity of a solution in which 360. grams of glucose, C6H12O6, are dissolved in…

A: m = 360 g V =  250 mL        [ 1L = 1000ml]    = 0.250 L  Molar  mass of  C6 H12 O2 =  180.16 g/mol

Q: Calculate the molality of a solution prepared by dissolving 1.50 g of sodium hydroxide (NaOH) in 112…

A: molality is one of the ways to express the concentration of solution.

Q: The concentration of a NaCl solution is 25.0% (%w/v). What volume (mL) of this solution contains…

A:

Q: A solution was made by adding 13.643 g of NaCl into 4.073*105 g of H2O. Calculate the concentration…

A:

Q: What would be the osmotic pressure of a 0.25 M aqueous solution of sucrose at 37C?

A:

Q: What mass (in grams) of potassium hydrogen phthalate (KHP) would you need to make 250.0 mL of a…

A: Molarity :- It is the number of moles of the solute dissolved per liter of the solution. It is…

Q: If 8.0 L of ethylene glycol , C2H4(OH)2, density = 1.113 g/mL, is placed in an automobile radiator…

A: This numerical can be calculated by using the formula for freezing point depression. Freezing point…

Q: Acetone, C3H6, is the main ingredient of nail polish remover. A solution is made up by adding 35.0mL…

A:

Q: What is the concentration of an aqueous caffeine solution that is prepared by dissolving 36.8 g of…

A: In order to find the concentration of caffeine in the solution we first write down the given data:…

Q: In a 55.0-g aqueous solution of methanol, CH4O, the mole fraction of methanol is 0.110. What is the…

A:

Q: In a 54.0-g aqueous solution of methanol, CH4O, the mole fraction of methanol is 0.220. What is the…

A: mole fraction : It is the ratio of moles of a particular component to that of the total moles of…

Q: 2.45 mole of methanol (CH3OH) in 5.00 L of solution

A: Number of moles of solute present in 1 liter of solution is known as molarity of the solution.

Q: If 150 g of ethylene glycol (C 2H 6O 2) is added to 1,000. g of water, what is the freezing point?

A: Kf value of water is 1.86 K Kg mol-1. Depression in freezing point when a non-volatile solute is…

Q: What is the density of a potassium chloride solution if its molarity is 0.5M and its molality is…

A: Given : Molarity = 0.5 M  Molality = 0.9 m

Q: if we add 275g of ethylene glycol, C2H6O2, per 1000g of water to a car radiator, what will be the…

A:

Q: What is the mol fraction of ethanol, C 2H 5OH, in a solution of 75.3g of ethanol and 525g of water?…

A: Number of moles is calculated by dividing the given mass with molecular mass.

Q: If we add 175 g of ethylene glycol, C2H6O2, per 1000. g of water to a car radiator, what will be the…

A:

Q: What mass of glucose (C6H12O6) must dissolve in 679 g of ethanol to make a 0.92 m solution?

A: Molality of solution is equal to number of moles of solute dissolved in per kg of solvent. It is…

Q: If an aqueous solution is 9.69% (w/v) in ammonium carbonate,(NH4)2CO3 , how many grams of ammonium…

A: %(w/v) = (100 x Mass of solute in g)/Volume of solution in mL %(w/v) = (100 x W)/V

Q: How many mols of solute are in 125mL of a 2.0M hydrochloric Acid solution?

A: Molarity is defined as the number of moles of solutes present in per litre of solution.

Q: Calculate the molarity of 1.55 mole of NH4C2H3O2 in 1.00L of solution

A: Given:   Moles of NH4C2H3O2 = 1.55 mol    Volume=1.00 L

Q: Caffeine is a stimulant found in tea and coffee. A sample of Caffeine was dissolved in 45.0 g of…

A: Answer: grams of caffeine in the sample is 0.826 g

Q: Calculate the mass percent (m/m) of a solution prepared by dissolving 56.79 g of NaCl in 155.2 g of…

A: HERE we see that mass percent is the mass of the solute in grams for exactly 100  gm of the…

Q: At 20 degrees celcius, a 0.516 m aqueous solution of glucose (C6H12O6) has a density of 1.0165 g/mL.…

A: In chemistry, number of moles refers to a unit of amount. It can also be defined as the mass of a…

Q: How many grams of glucose (C6H12O6) are present in 257.3 mL of a 11.2 M solution?

A: Molarity of a solution can be defined as the number of moles of solute dissolved per litre of…

Q: The density of an aqueous solution that is 13.2% by mass of XY ( molar mass 56.8 g/mol ) is 1.10 g/…

A:

Q: Calculate the molality of a solution containing 10.8 g of ethylene glycol (C 2 H 6 O 2 ) in 360 g of…

A: Molality is the ratio of number of moles of solute to the mass of solvent in kilograms. Molality=…

Q: 2.15 mole of methanol (CH3OH) in 5.00 L of solution

A: The dissolution of the given mass of the solute in a given volume of the solvent at a specified…

Q: In a 55.0g aqueous solution of methanol, CH4O, the mole fraction of methanol is 0.110. What is the…

A: Mole fraction is the ratio of the number of moles of one component to the sum of the moles of total…

Q: What mass of ammonium sulfate, (NH4)2SO4 must be added to prepare 200.0 g of a 3.5% solution of…

A: 3.5% Solution of (NH4)2SO4 means 100g solution of ammonium sulfate contains 3.5g (NH4)22SO4.

Q: A 16.00% aqueous solution of glycerol, HOCH2CH(OH)CH2OH, by mass, has a density of 1.037 g/mL. What…

A:

Q: Which of the following aqueous solutions should have the lowest freezing point: 0.0500m C6H12O6,…

A: Depression in freezing point is defined as the depression in freezing point of water on addition  of…

Q: What is the freezing point of a solution of dibromobenzene, C6H4Br2, in 0.250 kg of benzene, if the…

A: Given data, boiling point of solution = 83.5 oC Formula used in this question, Depression in…

Q: Caffeine, C3H10 N4O2, is a stimulant found in tea and coffee. A sample of the substance was…

A: Given: The mass of chloroform = 45.0 g The molality of the solution = 6.27×10-2 m We have to find…

Q: Caffeine 1C8H10N4O22 is a stimulant found in coffee and tea. If a solution of caffeine in the…

A:

Q: Calculate the molarity of a solution containing 2.80 moles of ethyl alcohol (C2H6O) in 500 mL of…

A:

Q: grams

A:

Q: what is the vapor pressure if there is 1.20 molarity glucose solution at 250.15 degree celsius

A: The vapour pressure of a solution is given by

Q: What is the percent-by-mass concentration of glucose in a solution made by dissolving 65.5 g of…

A: Given: Mass of glucose = 65.5 g Mass of water = 178.2 g

Q: Calculate the molality of a solution prepared by dissolving 6.98 g of sodium hydroxide (NaOH) in 134…

A: Molality (m): Molality is the number of moles of solute present in one kilogram of solvent.…

Q: Assuming ideal solution behavior, how many liters of HCl gas, measured at 30.0 °C and 745 torr, are…

A: Molarity of a solution = Number of moles of solute/Volume of solution in L For an ideal gas: PV =…

Q: The molar concentration of solution that contains 25 g glucose, CH12O6 in 500ml of solution is 2.5…

A:

Q: Calculate the Normality of Calcium hydroxide solution containing 6.32g of calcium hydroxide in 5.82L…

A: Given : Mass of calcium hydroxide i.e Ca(OH)2 = 6.32 g And volume of solution = 5.82 L

Q: In a 64.0-g aqueous solution of methanol, CH4O, the mole fraction of methanol is 0.110. What is the…

A: Weight of solution = 64 g Moles of Methanol = x Moles of Water = y Mole Fraction of Methanol…

Q: What is the mole fraction of solute in a 3.70 m aqueous solution?  xsolute =

A: Molality is the number of moles of solute in 1 kg of solvent.  Here, the solvent is water, as the…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.