The test for starch in water is   A. silver nitrate.   B. iodine.   C. barium ions.   D. sulfuric acid.   E. chloride ions.

Q: the first step in the test for a lipid is to add ethanol and propanone .what do this step do?

A: Lipids are organic molecules that contain hydrocarbons. These contain fats, hormones, oils, some…

Q: Which of the following elements is or are common to both lipids and proteins? A. Carbon only B.…

A: A macromolecule is an enormous particle, like a protein. They are made out of thousands of…

Q: Which of the following statements is true? a. Acids and bases cannot mix together. b. Acids and…

A: pH scale indicates the hydrogen ion concentration of that solution. By given pH we can say if that…

Q: How do you solve this question?

A: The given solutions are Solutions A and Solutions B having pH (potential of hydrogen ions) 8 and 4…

Q: Select the statements that are TRUE regarding Water. SELECT ALL THAT APPLY   A. Water is…

A: Those molecules that are vital for the growth and development of the living body are referred to as…

Q: d fat. Duodenal pH is m

A: pancreas secretes digestive enzymes into the duodenum and hormones into the bloodstream. The…

Q: (3) A Celsius thermometer indicates a temperature of -40 °C. (a) What Fahrenheit and Kelvin…

A: 3  A Celsius temperature + 273.15. Your answer will be in Kelvin To convert temperatures in degrees…

Q: If burning 1 gram of cornflake (in a calorimeter) caused the temperature of 23.0°C water (100 mL) to…

A: Calorie: The calorie is the energy required to raise the temperature of 1 gram f water by 1°C. Its…

Q: What will you observe when samples of these fats and oils are tested for unsaturation with bromine…

A: Fatty acids are building blocks of fats. Fats are one of the major biomolecules. Fatty acids can be…

Q: Which of these statements is correct with respect to pH? The pH of a solution remains constant with…

A: pH is a measure of the concentration of hydrogen ions in a solution. It is an important quantity…

Q: hat is the pH of 0.6M acetic acid?

A: Acetic acid is a weak acid, to calculate the pH we need acid dissociation constant (ka) , for this…

Q: Discuss the results and observations in a regular laboratory experiments the denaturation of: 1.…

A: A polypeptide is fully functional if its properly folded misfolded protein got ubiquitination so, if…

Q: A pH of 3 is a. basic b. neutral c. acidicd. a buffer

A: Introduction pH plays and important role in determining the concentration of H+ ions in the…

Q: A. Biuret Test Mix 1 mL of sample with 1 mL of 5% NaOH. Add 2 – 3 drops of 1% CuSO4.    Question…

A: Biuret test is done to check for the presence for proteins. CuSO4 and NaOH are used as reagents.…

Q: WHAT ARE THE PURPOSE OF THESE TESTS: Molisch test, Benedict’s test, Nylander’s test, Osazone’s test,…

A:

Q: How should the manufacturer design the experiment? In order to compare the strength of the film and…

A: Starch films usually contain amylose, amylopectin, water, andor other plasticizers, and they are…

Q: What are the differences between Benedict's solution and Fehling's solution? ls there a difference…

A: Chemical tests are those that are used to detect the presence of a chemical compound or a chemical…

Q: 1. Differentiate starch from cellulose and carb 2. In which solvents or solutions will a lipid be a.…

A: Since, you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Which two statement about the substances in this experiment are true? A. Chalk is harder than…

A: Chalk is a sedimentary carbonate rock formed of the mineral calcite, is a soft, porous form of…

Q: Which of the following describes a buffer?   A. The measure of the amount of hydrogen ions in a…

A: A solution is said to be a homogeneous mixture of two or more components in any one phase(solid,…

Q: Describe the property of potassium iodide solution in its affects on the results of detection of…

A: Iodine test is used in detection of starch using iodine and potassium iodide solution.

Q: a sample that contains a carbohydrate delivers a negative starch iodine test. what does this result…

A: Introduction:  Carbohydrates are polyhydroxy aldehydes or polyhydroxy ketones with a molecular…

Q: Starch solutions must be made-up fresh before an experiment. A week-old starch solution tested…

A: Starch is a storage form of a polysaccharide found in plant products.

Q: Which of the following ingredients in Ding Dong Cakes are added for the purpose of maintaining pH…

A: Cake or Ding Dong cake is form of sweet food made from flour, sugar, and other ingredients.

Q: If we take a cholesterol test and the test results are high or low, what are the reasons that led to…

A: A waxy molecule called cholesterol is present in blood. Although the body needs cholesterol to…

Q: There are two lipid samples the other one contains three double while the other one contains only.…

A: Fatty acids are the simplest form of lipid, contain a long hydrocarbon chain and a carboxyl group.…

Q: A Determine how much sodium and similar elements are normally found in the human booy B. Determine…

A: Asked : Reason for element are safe for humans to consume from given options.

Q: Which mixture acts as buffer solutions? O 50 ml 0.1M H2CO3 and 100 ml 0.1M NAOH 100 ml 0.1M H2CO3…

A: A buffer solution is composed of a weak acid and its conjugate base. The buffer solution resists the…

Q: Acids are substances that ________.   a. release hydrogen ions   b. absorb hydrogen ions   c. absorb…

A: Substance releases ions such as hydrogen ions Or hydroxide ions when dispersed in any solution.

Q: Which of the following substances would be considered basic? A. hydrochloric acid (pH 1.0)   B.…

A: Introduction  pH plays and important role in determining the concentration of H+ ions in the…

Q: Hot air at 50 C does not cause a lethal burn on our skin, but water with the same temperature is…

A: yes its true that Hot air even at 50C can not burn our skin, but water with same temperature can…

Q: Something with a pH of 5 would be A) acidic B) alkaline C) neutral D) basic

A: Acidic and basic are two extremes that describe a chemical property chemicals. Mixing acids and…

Q: A patient is admitted to the hospital in complete collapse. His blood pH is 6.8, and his HCO−3HCO3−…

A: Introduction:-  The decrease in the pH of the body is called acidosis and this can be due to…

Q: (4) The normal melting point of gold is 1064.5 °C and its boiling point is 2660 °C. (a) Convert…

A: Temperature is measured in 3 different scales namely Celcius, Fahrenheit, and Kelvin.  Celcius is…

Q: A student conducted an experiment to see how the amount of dissolved salt affects the boiling point…

A: Various factors are involved in determining the boiling and melting point of a substance. It may…

Q: Will all carbohydrates gives a positive result with Molisch test?  Explain your answer:

A: Molisch test is named so after the name of its discoverer, Hans Molisch. It is a kind of chemical…

Q: Create a concept map employing the different chemical tests for the differentiation of the types of…

A: Hi! As you have posted multiple subparts and have not mentioned which is to be answered, we are…

Q: Marissa is working with a solution that is very acidic. When she tests the solution with pH paper,…

A: pH scale :  7 is neutral,  more than 7 is basic pH and less than 7 is acidic pH. Acidic solution :…

Q: A, high specific heat B. adhesion C. polarity D. high heat of vaporization Lu budrogenating…

A: Ans 5: - Water is a good solvent because of it's Polarity. The relatively small size of a water…

Q: Which of the following WILL PROMOTE sol formation of neutral polysaccharide sample?   a. place the…

A: Polysaccharides are used for hydrogel formation nowadays which is diversely used in the field of…

Q: Write dissociation of salts that are from a) strong base and weak acid; b) weak base and strong…

A: Acids release protons and bases donate hydroxide ions. pH is the power or potential of hydrogen. pH…

Q: Discuss the results and observations in a regular laboratory experiments the denaturation of: 1.…

A: Denaturation is the process, in which the protein loses its functions due to the change in the…

Q: D. * 3. Describe what it means that water has A. High cohesiveness, B. high adhesiveness, C. a…

A: Water is a substance that is composed of the chemical elements hydrogen and oxygen. It exists in…

Q: Discuss the results and observations in a regular laboratory experiments the denaturation of:   1.…

A: 1) Acetone and proteins: organic solvents with the mutual attraction of nonpolar groups.…

Q: Which element is a metal? A. C B. Rn C. CI D. Cr

A: The classification of chemicals into different groups and understanding their properties individual…

Q: Which of the following best describes a solution with a pH of 9?    A. it would have 100 times more…

A: pH is the measure to specify acidity and basicity of an aqueous solution. It is the negative…

Q: Substances those are partially dissolved in water are commonly known as

A: Molecules that are dissolved in water completely are called polar substances. Polar molecules get…