Q1. The concentration of the sugar glucose (C6H12O6, M.wt. 180) in human blood ranges from about 80 mg/dL before meals to 120 mg/dL after eating. Find the molarity of glucose in blood before and after eating.

Q: What is the mass in grams of potassium dichromate(K2Cr207) are required to prepare a 350 cm3…

A: We know molarity(m)= moles of solute/total volume of solution in Litre. And moles of K2Cr2O7 = mass…

Q: 1.813 g C4H4O4 is dissolved in H20 and titrated with NaOH. 24.9 mL of a NaOH solution were required…

A: Given Mass of C4H4O4 = 1.813 g Volume of NaOH = 24.9 ml

Q: Please help

A: Given information: 45 g of NaCl in 100 g of water at 60oC The solubility graph shows the curve…

Q: 2. A brine solution is 13.0 % (w/w). How much salt is there in a sample which weighs 150 grams?…

A: The given data : The %(w/w) of the solution = 13.0 % The mass of the sample = 150 g. To determine =…

Q: In this station, you will find 400.0 mL of a 0.500 M aqueous solution of calcium chloride. What mass…

A: Molarity of any solution is given by :Molarity =Number of moles of solute Volume of solution(in…

Q: . How much NH4Cl is required to prepare 100mL of a solution containing 70mg NH4Cl per mL?

A: From given data Mass of NH4Cl = 70 mg = 0.07 g For volume of solution = 1 mL = 10-3L Also Molar mass…

Q: If 4.12 L of a 0.850 M-H3PO4 solution is be diluted to a volume of 10.00 L, what is the…

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the mole of solute…

Q: How many mL of 0.230 M HNO3 contain 8.20g HNO3?

A: Given that : The concentration of HNO3 = 0.230 M The mass of HNO3 = 8.20 g We have to determine the…

Q: 189 mL of a 1.9 M solution of KBr is diluted to 668 mL. What is the new concentration of the…

A: Answer 8 :-  New concentration of solution = 0.537 M

Q: 1. a) 5.62g of LIOH is dissolved and made up to the mark in a 500.00ml flask. Calculate the molarity…

A:

Q: What is the volume in liters that is needed to create a 1.4 M solution with 4.3 moles of Zn(NO3)2?…

A:

Q: 1) What is the concentration in g/mL and g/L of a solution made up of 28g KBr in 88 mL of solution?…

A: Here we are required to find the concentration of Kbr solution in g/ml and g/L units

Q: 2. An alcohol solution contains 35.0 g of 1-propanol (C3H7OH) and 150 g of ethanol (C2H50H). (a)…

A: Consider the given information is as follows; Mass of 1-propanol = 35.0 g                  (solute…

Q: Imagine you dilute 25.0 mL of a 5.50 M solution to a final volume of 100.00 mL. What will be the…

A:

Q: To what volume (in mL) would you need to dilute 20.0 mL of a 1.40 M solution of LiCN to make a…

A: Given  Volume ( V1)         = 20 mL  Molarity ( M1)      = 1.40 M  Molarity ( M2)     = 0.0900 M…

Q: 2. A solution of KCI is saturated at 50°C. (a) How many grams of solute are dissolved in 100 g of…

A: Answer:- This question is answered by using the given solubility table at different temperatures.…

Q: 7. Vanillin contains 63.15% C, 5.30% H, and 31.55% O whether it is extracted from vanilla beans,…

A: An empirical formula represents the simplest whole number ratio of various atoms present in a…

Q: How many moles of solute particles are present in 7.64 mL of 0.249 M K3PO4? When you have your…

A: Given:Concentration (Molarity) = 0.249 M.Volume = 7.64 mL = 7.64×10-3 L.

Q: Q4: You want to prepare 1L of a solution containing 1ppm Fe. How many grams ferrous ammonium…

A: 1- First we will calculate the mass of this given salt :  Concentration of this salt is 1ppm that…

Q: What is the molarity of the solution prepared by diluting 27.4 mL of 2.10 M AgNO3 to the final…

A: Molarity is defined as number of moles of solute divide by volume of solution

Q: A student has 500.0 mL of a 5.75 x 10 M ZNC204 solution. Sufficient Na2C204 is added to maintain the…

A: After addition of Na2C2O4  some ZnC2O4 is precipitate out. So determine final concentration of Zn+2…

Q: If 32 mL stock solution of 6.5 M H2SO4 is diluted to a volume of 500 mL . What would be the…

A: Given: V1 = 32 mL M1 = 6.5 M V2 = 500 mL

Q: 35. How many grams of ammonium chloride (molar mass = 53.5g/mol) are contained in 0.500 L of a 2.00…

A:

Q: I have 6 tubes with the contents labeled. How can I make a 20% concentration serial dilution? Please…

A: Serial dilution: A serial dilution is any dilution in which the concentration decreases by the same…

Q: The quotient of 12.987g divided by 20.0cm^3

A: Given,12.987 g divided by 20.0 cm3

Q: What is the molarity of a solution containing 17.9g of NH3 dissolved in 195mL of solution?

A: Applying formula of molarity  M= n/V(mL)×1000

Q: Ethylene glycol is the primary component in antifreeze. How many grams of ethylene glycol…

A: Volume of solution = 163 mL  Volume of solution in L = 0.163 L  Molarity of solution = 3.108 M  We…

Q: 100 90 NANO, 80 70 60 CaCl, 50 Pb(NO3)2 40 KCI NaCI 30 20 KCIO, 10 Ce,(SO)3 10 20 30 40 50 60 70 80…

A: We can determine how many grams of K2Cr2O7  can be dissolved in 100 g of water at  80°C by taking a…

Q: What is the concentration of NaCl for a density of 1.058g/mL

A:

Q: The concentration of lead in an industrial waste stream is 0.28ppm. What is its molar concentration…

A: We know , 1 ppm = mass of Solute in gram/Volume of Solution (in mL) We have 0.28 ppm of lead…

Q: 2) A sample of 0.892 g of potassium chloride (KCI) is dissolved in 54.6 g of water. What is the…

A: The formula for finding the mass percent is given by: Mass % = mass of solutemass of solute + mass…

Q: Find tha density of 1.19 g/ml and contains 37.0e molarity of Solution of Hcl that has (w/w %) How…

A: Given , Density of HCl=1.19 g/mL Solution concentration=37%(w/w)

Q: Procaine hydrochloride (M= 272.77 g/mol) is used as a local anesthetic. Calculate the molar out of a…

A: Given that -  Molar mass of procaine hydrochloride Solution = 272.77 g/mol  Molality of procaine…

Q: 3NaOH= H3PO4----> Na3PO4+ 3H20 A 41.0ml sample of NaOH solution of unknown concentration requires…

A: Given, 24.3 mL of 0.150M  H3PO4 no. Of moles of H3PO4= 0.0243 L × 0.150M No. of moles of H3PO4 =…

Q: 1. What is the concentration of ethanol (C2H6O) solution that was prepared by dissolving 50.500 g of…

A:

Q: A 15.00 % by mass solution of lactose (C12H22O11, 342.30 g/mol) in water has a density of 1.0602…

A:

Q: How much solute is present in 1735 mL of 0.0735 M H2SO4? (Just write the numbers with 2 decimal…

A: Molarity is defined as number of moles of solute devided by volume of solution in liter.

Q: The concentration of sugar (glucose, C6H12O6) in human blood ranges from about 80 mg/dL before meals…

A: Dear student,There seems to be a typo in the question.One Deci litre= 0.1 litConsidering the same…

Q: A solution is made by combining 4.00 g of sugar and 100 mL of water (density of water = 1.00 g/mL).…

A: %w/w = mass of solute/mass of solution*100

Q: 1. Which solution-0.50 M NaCl or 0.25 M SrCl₂-has the larger concentration when expressed in mg/mL?…

A:

Q: the Molarity of glucose solution after dilution?

A: A standard solution of glucose of volume 3000 ml having Molarity 1.2 M was prepared in the chemistry…

Q: What volume in L of a  0.32 M Mg(NO₃)₂ solution contains 45g of Mg(NO₃)₂?

A: Given data: Mass of Mg(NO3)2 = 45 g, Concentration of Mg(NO3)2 = 0.32 M Here the question ask to…

Q: A solution is prepared by diluting 0.7850L of 1.262M K2S solution with water to a final volume of…

A:

Q: 3. A saline solution contains 0.90 g of NaCI per 100 mL of solution. What is its molarity?

A: Given: Mass of NaCl= 0.90g Volume of solution= 100 mL= 0.1L To find: The molarity of the solution

Q: 50.020 g sucrose were used to prepare 300.0 mL of solution (sp. gr. = 1.17). What is the % by mass…

A: Given, 50.020 g sucrose were used to prepare 300.0 mL of solution (sp. gr. = 1.17).

Q: 150 140 130 120 How much NaNO3 dissolves in 100 g of water at 45 "C? 110 100 90 80 70 60 50 40 30…

A: 110 grams of NaNO3 will dissolve in 100 g of water at 45 0C.

Q: ML b. Describe how you would prepare 1 L of a 50 mM solution of acetic acid. The gram formula weight…

A: There are different ways in which we can express  the concentration of the species

Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.