What are preservatives?

Q: a common preservative used in hematology and blood bank

A: Different types of preservatives are used as per the laboratory requirement. Preservatives used in…

Q: A solution is contaminated with traces of cadmium, manganese, and cobalt. Which option would be the…

A: One of the removal of heavy metals is by using the solubility factor of these metals. In a saturated…

Q: What is bioaccumulation? Select one: a. Build-up of a chemical in an organism. b. Build-up of a…

A: To define: Bioaccumulation.

Q: The cost of a bottle of Extra Strength Tylenol is $9.99 for 100 tablets each containing 500 mg of…

A: Answer: In this problem price of 1 bottle of acetaminophen, which contains 100 tablets each…

Q: In standardization of HCl sample with 0.1 M Na2CO3 standard solution if we consumed 10 ml .HCl to…

A: Given: The volume of Sodium Carbonate (V1)=10 mL The volume of HCl (V2)=10 mL The molarity of Sodium…

Q: A chemist performed a reaction of 2-methylpent-2-ene with HBr in diethyl ether. However, after…

A: To identify the product structure when HBr is added to 2-methylpent-2-ene

Q: Why does bee sting cause pain and irritation? Rubbing of baking soda on the sting area gives relief.…

A:

Q: In a few lines, describe the IMMENENT IMPORTANCE of “Green Chemistry" and its importance to Society.

A: Green chemistry: The branch of chemistry which deals with the reduction of the harmful effect of…

Q: Write a balanced reaction for which the following rate relationships are TRUE. Rate = 1 AIN: - A[O;]…

A:

Q: • Stock solution: 1000 mg/L Target sample concentrations: 50-400 mg/L • Create a 5-point standard…

A: Given that, The concentration of the stock solution is C1 = 1000 mg/L. The volume of the final…

Q: A student recrystallized 50 mg of impure salicylic acid and decided to wash the crystals with 1.0 mL…

A: Recrystallization is a technique used to purify solid compounds.

Q: From the water, lemon juice, apple juice, diluted vitamin C and vinegar in the bowls respectively;…

A:

Q: What is the purpose of Safety Data Sheets? Why are these important when handling common food service…

A:

Q: 4. Calcium Hydroxide Solution (Lime Water) and olive oil are used because an emulsifying agent is…

A:

Q: Which of these will NOT dissolve in water?    a.table salt b.sugar c.vinegar d.bacon fat

A: Given options are : a.table salt b.sugar c.vinegar d.bacon fat Which of these…

Q: Question 4 A sample consisting of 3.0 mol of perfect gas molecules with Cv.m, = 3R/2 which is…

A: Given that, a perfect gas undergoes reversible adiabatic compression, The number of moles is n = 3.0…

Q: Materials Needed semi-micro test tubes and rack solid I2 regular test tubes and rack squash pipettes…

A: The rule odf solubility is 'like dissolves like' whuch means that polar solute will be dissolved in…

Q: A series of dye solutions are made by adding water to the stock Blue I dye solution. Either the…

A: Therefore, the correct arrangement from highest to lowest concentration is as follows-9.0 mL of Dye…

Q: In a few lines, describe the IMMENENT IMPORTANCE of "Green Chemistry" and its importance to society…

A: Green chemistry: The branch of chemistry which deals with the reduction of the harmful effect of…

Q: If you have a stock solution of Janus Green B dye that is at a concentration of 1 gram/liter, what…

A:

Q: 27. Put a small amount of soap in a test tube and mix the soap well with water. Tap a few drops of…

A: Soap is basic in nature.  Acid are those substance which change blue litmus paper into red and no…

Q: List three physical properties of tap water: a.______________________ b.______________________…

A: Physical properties of water are related to odour, colour and appeaance  Boiling point Solid,…

Q: Splitting of a signal in a proton NMR spectrum tells us the number of chemically non-equivalent…

A: we have to calculate the number of lines for the labelled H's

Q: 8. AHecomb for chicken fat can be calculated using AH comb = (Cstem AT)/n , where n is the moles of…

A: Answer are as follows:

Q: Most of us have had a glass of water from a Brita® pitcher. What is inside of a Brita® filter…

A: The Brita filter cartridge is composed of copolymer of styrene methyl methacrylate.

Q: How does sugar preserve food materials? Is it a better preservative than salt? Why or why not?

A: Please find your solution below : In food materials, sugar helps to preserve the colour, texture and…

Q: Highest concentration of dye Lowest concentration of dye Answer Bank 3.0 mL dye and 3.0 mL water 2.0…

A: Concentration is defined as the amount of solute with respect to solution.  More is the amount of…

Q: 4. Preservatives that are usually found in cured meats, bacon, ham, corned beef and hot dogs. A.…

A: Concept based on Food preservatives and their uses.

Q: Calcium plus carbonate

A:

Q: . You have a concentrated stock solution of bacterial LPS in water that has a concentration of 1…

A: Since the dilution factor is inversely proportional to the concentration of the solution.

Q: Makes oceans and seas to have higher clarity than lakes and rivers.   a. SALINITY

A: Oceans water has a more uniform composition than lake and river water. It contains, by weight, about…

Q: A stock solution of I2 is standardized using a 0.1430 g sample of pure ascorbic acid. The titration…

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: How does magnesium hydroxide provide relief for indigestion? Pick from the following: • Magnesium…

A: In the given question we have to write about magnesium hydroxide how does it works to provide relief…

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.