4. Calcium Hydroxide Solution (Lime Water) and olive oil are used because an emulsifying agent is formed in situ when these 2 solutions are agitated together. What is the emulsifying agent that is formed? a. calcium succinate b. calcium oleate c. succinic hydroxide d. palmitic hydroxide

Q: What is the differences between Kjeldahl's method and Dumas's method?

A: Difference between Kjeldahl's method and Dumas's method.

Q: A 25mL sample of 2.0mol/L sodium oxalate is reacted with 30mL of 1.50 mol/L copper (II) nitrate…

A: Given that 25 mL sample of 2.0 mol/L sodium oxalate is reacted with 30 mL of 1.50 mol/L copper (II)…

Q: 20. 50 ml of a 0.874 M HNO3 solution is diluted to 0.250 l.  What is the concentration of the…

A: Given values: Initial volume: V1 = 50 mL Initial concentration: C1= 0.874 mL Final volume: V2 = 0.25…

Q: FeClz is highly corrosive and is irritating to skin and eyes. Which waste container should sol…

A: FeCl3 is a highly corrosive. FeCl3 is very acidic and we used basic container to put in.

Q: PHOTOSYNTHESIS 4 LOCATED IN THE 7 2 TRAPS LIGHT ENERGY AND MAKES FOOD 3.

A: Photosynthesis: It can be defined as the conversion of light energy into chemical energy by the…

Q: Concentrated HCl is 12.1 M.  Determine the volume in mL of the concentrated solution required to…

A:

Q: An aqueous solution contains 12.6 ppm of dissolved Ca(NO3)2 (which gives Ca2+ +  2NO3- ). Find the…

A:

Q: a) You have a solution that is 15 % (v/v). You take 5.0 mL of this solution and add enough water to…

A: Given a) Volume and concentration of original solution as 5.0 mL and 15% respectively. Volume of…

Q: Step 1: In tube 1, you add 100 ul of plasma to 900 ul of distilled water.  Step 2: In tube 2, you…

A: The final/total dilution factor can be obtained by the multiplication of individual dilution factors…

Q: 2.how much water should be added to 100ml of 95% ethanol to make 50%rthanol

A:

Q: 0.05 g of acetyl salicylic acid has been dissolved to the volume 25.00 ml to create a stock…

A:

Q: How many grams of NAOH will you need to add to 5.0 mL of deionized water to obtain a 3.0 M solution?…

A: Given that:  Molarity of NaOH solution = 3.0 M Volume of solution  = 5.0ml = 5.0ml×1L/1000ml =…

Q: Determine the number of moles of AgNO3 in 25.0 ml of 0.600 M AgNO3. Show solution.

A: Given,  The number of moles of AgNO3 present in 25.0 mL of 0.600 M AgNO3 solution is:

Q: 1. If you put some water in your cup then, sprinkle black pepper all over the surface. What does the…

A: When some substance is added into water, then if its density is less then it will float over the…

Q: Which one of the following compounds is insoluble in water? A. K2CO3 B. CaCl2 C. PbCl2 D. NaNO3

A: Soluble salts are those which completely dissolves in water. There are some salts which are…

Q: 10. A water sample was tested for iron content, but was diluted prior to obtaining the instrument…

A:

Q: PPb contains 1 part of solution per 10° parts of solvent. True False

A: Answer  PPb contains 1 part of solution per 109 parts of solvent  We know…

Q: The reason that sodium hydrogen carbonate was added to the tap water in which the Elodea was…

A: Sodium hydrogen carbonate  has formula  NaHCO3 and also known as baking Soda .

Q: You need to treat cells with arsenite such that it has a final concentration of 25 uM once it has…

A:

Q: Concentration of original aspirin solution (calculate M1 using M1V1=M2V2; M2 is the concentration of…

A: As per Beer-Lambert law:

Q: Sodium Methylsulfonate is an inefficient detergent. Explain why

A: Dear Subscriber! You have posted multiple questions. As per our guideline, we have answered only…

Q: You need to make a 1:5 dilution of a solution. You need 25 ml of the diluted solution. How much…

A: Given:dilution ratio= 1:5volume of diluted  solution = 25ml

Q: Choose which waste disposal container you should dispose of the unused 0.1 M FeCl3 solution. A acid…

A: Answer Which waste disposal container you should dispose of the an…

Q: How many mL of 15.8 M nitric acid should be diluted to 0.250 L to make 3.00 M HNO3?

A: Given  Initial Molarity of HNO3  ( M1 ) = 15.8 M  Final Volume ( V2 )   =  0.250 Liter…

Q: ................... hv 35% 65%

A: Alkanes are usually less reactive  but in presence of sun light conditions it undergo free radical…

Q: What is meant by supercritical fluids? Explain how supercritical fluids can be used for the…

A: A supercritical fluid (SCF) is any substance at a temperature and pressure above its critical point,…

Q: A 809 mL NaCl solution is diluted to a volume of 1.40 L and a concentration of 5.00 M . What was the…

A:

Q: The first compound to be prepared in the laboratory was(a) Methane(b) Ethyl alcohol(c) acetic acid…

A: German chemist Wohler in 1828 obtained urea artificially by treatment of silver cyanate with…

Q: Drawl what one molecule of LiBr would look like when dissolved. Use a total of 6 molecules of water.

A: LiBr is an ionic compound and when it is dissolved in water, it dissociates into Li+ ions and Br-…

Q: Concentrated sulfuric acid is 18.0 M. What volume is needed to prepare 1.0 L of 6.0 M sulfuric acid…

A:

Q: Locke-Ringer's solution contains 9 g of sodium chloride, 0.24 g of calcium chloride, 0.42 g of…

A: Locke-Ringer Solution An isotonic solution used for the treatment of dehydration. It contains…

Q: How can we remove hardness from water? write any one method

A: The hardness of water are  two types: 1.Temporary Hardness :The presence of magnesium and calcium ,…

Q: boiling stones added to the 400 mL boiling water bath

A: The boiling point of water is constant, it does not change on the addition of stones.

Q: How much sterile water will you have to add to the concentrated solution you calculated from problem…

A: The question is based on the concept of solutions.   Molarity is a method of expressing…

Q: What mass of MCl is needed to make 3000g of 30% solution? (MW: H= 1 , Cl= 35)

A:

Q: 15. A solute was added to a solvent and mixed well. Some of the solute settled to the bottom of the…

A: Given statement is :  A solute was added to a solvent and mixed well. Some of the solute settled to…

Q: How many milliliters of 0.05 M solution (Ca (NO3) should be mixed with pure water to obtain 500 g of…

A:

Q: 4. All the CaSO4 present in 0.511g of an impure sample of plaster is converted to 0.821g BaSO4 What…

A: Given mass of impure CaSO4 = 0.511 g mass of BaSO4 = 0.821 g The impure CaSO4 is converted into…

Q: What volume of 1.5M HBr solution is needed for a reaction that requires 2.0g HBr

A: The molarity is the concentration term that is defined as the number of moles of solute dissolved…

Q: What is the theory behind recrystallization purifying a solid?

A:

Q: A 10 ml sample of water from the lake was brought to the laboratory for analysis. The amount of…

A: The concentration of amount of oxygen dissolved in water is one of the parameters that is used to…

Q: A 900.0 g sample of sea water is found to contain 6.7 x 10 -3 g Zn.  Express this concentration in…

A: The concentration has to be given in ppm, Formula used: ppm=mass of solute/mass of solution×106

Q: A 1.2000 g sample of (NH4)2Ce(NO3)6 (548.23 g/mol) is dissolved in water and diluted to 100.0 mL.…

A: Given the mass of (NH4)2Ce(NO3)6 dissolved = 1.2000 g  Molar mass of (NH4)2Ce(NO3)6 = 548.23 g/mol…

Q: sample of cadmium weighing 3.139 g is dissolved in 3.00 M HCl. What (minimum) volume of HCl is…

A: Given that: Mass of cadmium = 3.139g Molar mass of Cadmium = 112.4g/mol Moles of Cd =…

Q: 59) To make a 0.250 m solution, one could take 0.250 moles of solute and add A) 1.00 L of solvent.…

A: The molality can be derived by dissolving the solute quantity in moles into specific quantity (1 kg)…

Q: Give two important uses of washing soda and baking soda.

A:

Q: If you have 13.5g of Cl2 and dissolve in 1.5 L. of cyclohexane what is molality of solution, density…

A: Molality of solution is defined as the number of moles of solute present in 1 kg of solvent.  Number…