Ascorbic acid, or vitamin C (C6H8O6, molar mass = 176 g/mol), is a naturally occurring organic...
Ascorbic acid, or vitamin C (C6H8O6, molar mass = 176 g/mol), is a naturally occurring organic compound with antioxidant properties. A healthy adult’s daily requirement of vitamin C is 70-90 mg. A sweet lime contains 2.85×10−4 mol of ascorbic acid.
To determine whether the ascorbic acid in a sweet lime meets the daily requirement, calculate the mass of ascorbic acid in 2.85×10−4 mol of ascorbic acid.
Express the mass in grams to three significant figures.
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Ascorbic acid, or vitamin C (C6H8O6, molar mass = 176 g/mol), is
a naturally occurring organic...
Ascorbic acid, or vitamin C (C6H8O6, molar mass = 176 g/mol), is a naturally occurring organic...
Ascorbic acid, or vitamin C (C6H8O6, molar mass = 176 g/mol), is a naturally occurring organic compound with antioxidant properties. A healthy adult’s daily requirement of vitamin C is 70-90 mg. A sweet lime contains 2.81×10−4 mol of ascorbic acid. To determine whether the ascorbic acid in a sweet lime meets the daily requirement, calculate the mass of ascorbic acid in 2.81×10−4 mol of ascorbic acid. Express the mass in grams to three significant figures.
1) Calculate the number of moles of Cl atoms in 3.01×1024 formula units of magnesium chloride, MgCl2. Express your answer numerically in moles. 2) In the gaseous state, chlorine exists as a diatomic m...
1) Calculate the number of moles of Cl atoms in 3.01×1024 formula units of magnesium chloride, MgCl2. Express your answer numerically in moles. 2) In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol). Calculate the number of moles of chlorine present in 100 g of chlorine gas. Express the quantity in moles to three significant figures. 3) Sodium hydroxide, NaOH, is a strong base that is used in industrial synthesis and processes such...
1) Calculate the number of moles of Cl atoms in 3.01×1024 formula units of magnesium chloride,...
1) Calculate the number of moles of Cl atoms in 3.01×1024 formula units of magnesium chloride, MgCl2. Express your answer numerically in moles. 2) In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol). Calculate the number of moles of chlorine present in 100 g of chlorine gas. Express the quantity in moles to three significant figures. 3) Sodium hydroxide, NaOH, is a strong base that is used in industrial synthesis and processes such as...
1) How many moles of water, H2O, contain 2.0×1022 molecules of water? Express the quantity in...
1) How many moles of water, H2O, contain 2.0×1022 molecules of water? Express the quantity in moles to two significant figures. Moles of water = ___________ mol 2) In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol). Calculate the number of moles of chlorine present in 140 g of chlorine gas. Express the quantity in moles to three significant figures. Moles of chlorine gas = ___________ mol 3) Sodium hydroxide, NaOH, is a strong...
Ascorbic acid also known as Vitamin C, is an organic compound containing C, H and O....
Ascorbic acid also known as Vitamin C, is an organic compound containing C, H and O. The combustion of a 28.1 g sample of ascorbic acid produces 42.1 g CO2 and 11.5 g H2O. Determine the empirical and molecular formula of ascorbic acid. The molar mass is 176 g/mol.
ascorbic acid (vitamin C, MM= 176.126 g/mole) is a reducing agent, reacting as follows: C6H8O6 ---->...
ascorbic acid (vitamin C, MM= 176.126 g/mole) is a reducing agent, reacting as follows: C6H8O6 ----> C6H6O6 + 2H+ + 2e- the concentration of ascorbic acid can be determined by oxidation with a standard solution of I2 (2 I- ---> I2 +2e-). A 200.0 mL sample of citrus fruit drink is acidified and 10.00 mL of 0.0500 M I2 is added. after the reaction is complete, the excess I2 is titrated with 38.62 mL of 0.0120 M Na2S2O3 according to...
Ascorbic acid (vitamin C, MM 176.124 g/mol)) can be determined using an iodometric back titration. A...
Ascorbic acid (vitamin C, MM 176.124 g/mol)) can be determined using an iodometric back titration. A vitamin C tablet was dissolved in 60 mL of 0.3 M H2S04. To the dissolved tablet, 2 g of KI and 50.00 mL of 0.0105 M KIO3 were added, resulting in the formation of a dark orange solution indicating the presence of 13-. The resulting solution was titrated with 0.0685 M S2032- until the starch indicator turned purple. If the end point was observed...
measured concentration of vitamin C in fruit juice. ( mol/L) Type of juice Ppple Volume of...
measured concentration of vitamin C in fruit juice. (
mol/L)
Type of juice Ppple Volume of container: 200mL Volume per serving: aob mL Servings per container: % RDA of vitamin C per serving: 1007 Calculated concentration of vitamin C based on packaging: RDA for vitamin C: 90 mg O.45 mg/mL 2.55X 10o ,mol/L Calculated molar concentration of vitamin C based on packaging: (assume molar mass is equal to that of ascorbic acid, 176.12 g/mol) Titration Data: 0.00Sm Concentration of lodine...
1a) How many mg is 5.95×10–5 mol of ascorbic acid (i.e. Vitamin C)? Report your answer...
1a) How many mg is 5.95×10–5 mol of ascorbic acid (i.e. Vitamin C)? Report your answer to 1 decimal place. b)What is the concentration of a potassium iodate solution after you complete the following porcedure? Pipette 24 mL of a 0.16 M potassium iodate stock solution to a 100-mL volumetric flask and then add water to the mark. Report your answer in decimal form to 3 decimal places.
For CaF2 Kap = 3.9 x 10-" (molar mass = 78 g mol-') at 25°C. How...
For CaF2 Kap = 3.9 x 10-" (molar mass = 78 g mol-') at 25°C. How many grams of this salt can be dissolved in 100 mL water at 25°C? (A) 0.8 mg (B) 1.2 mg (C) 1.7 mg (D) 2.0 mg (E) 2.4 mg
Ascorbic acid (vitamin C, MM 176.124 g/mol)) can be determined using an iodometric back titration. A vitamin C tablet was dissolved in 60 mL of 0.3 M H2S04. To the dissolved tablet, 2 g of KI and 50.00 mL of 0.0105 M KIO3 were added, resulting in the formation of a dark orange solution indicating the presence of 13-. The resulting solution was titrated with 0.0685 M S2032- until the starch indicator turned purple. If the end point was observed...
measured concentration of vitamin C in fruit juice. (
mol/L)
Type of juice Ppple Volume of container: 200mL Volume per serving: aob mL Servings per container: % RDA of vitamin C per serving: 1007 Calculated concentration of vitamin C based on packaging: RDA for vitamin C: 90 mg O.45 mg/mL 2.55X 10o ,mol/L Calculated molar concentration of vitamin C based on packaging: (assume molar mass is equal to that of ascorbic acid, 176.12 g/mol) Titration Data: 0.00Sm Concentration of lodine...
For CaF2 Kap = 3.9 x 10-" (molar mass = 78 g mol-') at 25°C. How many grams of this salt can be dissolved in 100 mL water at 25°C? (A) 0.8 mg (B) 1.2 mg (C) 1.7 mg (D) 2.0 mg (E) 2.4 mg
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