When a dilute iodine solution is placed on a slice of bread, the solution turns dark blue because bread contains

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

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

Q: What is the reaction in CaCl2+FeCl3

A: In a chemical reaction, reactants combine together to form products.

Q: Glucose Starch

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Q: E6A.14(b) For Pbl₂(s)= Pb²+ (aq) + 21 (aq), K= 1.4 × 108 at 25°C and the standard Gibbs energy of…

A: In the given problem, the value of ∆Go is given which is -173.64 kJ/mol. Use the formula which has…

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A: Alkaline phosphate is produced by osteoblasts or the bone and is associated with calcification…

Q: Rank the following ionic compounds by lattice energy. Rank from highest to lowest lattice energy.

A: Lattice energy is the energy required to convert one mole of ionic solid into gaseous ionic…

Q: reaction

A: Balance chemical equation is defined as which has equal number of atoms or ions in both sides…

Q: Using the following information: 2NO(g)  ↔ N2(g) + O2(g)                      Kc1 =…

A:

Q: How can the electrons in a catalyst (complex) be counted in neutral and in ionic form? When do the…

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Q: catalyst + HCI

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Q: 15 min. (PhP. (Ph):P=0 r.t.

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Q: What chemical tests can be carried out to distinguish between compound E and G?

A: Answer is explained below. Before the chemical tests is carried out to distinguish between E &…

Q: how does the process of making orange juice from oranges differ from the process of making orange…

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Q: Hemoglobin, Hb, has four Fe atoms per α molecule that, on average, bind about three O2 molecules.…

A: The equilibrium reaction for the oxygenation of hemoglobin is: Hb(aq) + 3O2(g) ⇌ Hb(O2)3(aq)

Q: Using the chart write the chemical Equation that predicts the products that form when combining…

A: The reactants given are MgSO4 and CaCl2.

Q: What is the osmotic pressure at 25 °C of an aqueous solution that contains 0.001 M of C12H22O11 ?

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Q: pal Classify each of the following compounds as soluble or insoluble in water: MgBr2 soluble…

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Q: My daughter loves lemonade. She adds 500 grams of sugar (sucrose C12H22O11) to a 1.5 liter pitcher.…

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Q: Data and Calculat Method II Depth in mm Volume in mL, 2.00 × 10-3 M Volume in mL, 2.00 x 10-3 M…

A: The reaction occurring above can be written as: Fe3+ (aq) + SCN- (aq) →[FeSCN]2+ (aq) Concentration…

Q: What would Ksp be equal to in terms of "x" for the insoluble ionic compound Mn203? O 27x4 O256x6 O…

A: Using the expression of equilibrium constant we can find Ksp.

Q: Given the following equilibrium: 2 SO2(g) + O2(g) ↔ 2 SO3(g) + heat State 3 conditions that will…

A: The question is asking for the conditions that will favor the production of SO3 in the given…

Q: polarity: Blue Yellow Red

A: Rank of ink colors base on their polarity is blue > red > yellow .

Q: If you are doing an experiment in the lab (oxidation-reduction titration) involving iodine. You were…

A: In redox reaction both oxidation and reduction takes place. During the redox titration using iodine,…

Q: The concentration of glucose in an aqueous  solution can be determined by oxidation with…

A: The method of least squares is used to minimize the error that can occur while plotting a straight…

Q: Explain PVA dissolves more slowly in water compared to sucrose and salt?

A: We are to discuss why PVA dissolves slower in water than sugar and salt. PVA aka polyvinyl alcohol…

Q: Given the equilibrium concentrations of [FeSCN2+] = 6.55 x 10-4 M, [Fe3+] = 8.39 x 10-4 M, and…

A: Given data :  [FeSCN2+] = 6.55×10-4 M  [Fe3+ ]= 8.39× 10-4 M  [SCN-]= 2.28× 10-3 M

Q: trans-Isomers have lower solubility than cis-isomers, why?

A:

Q: Which of the following is/are TRUE for an endothermic process in an open or closed system? I. The…

A: We have to tell which statement is true.

Q: In the graph above, the gray curve represents a normal action potential. The black curve represents…

A: Sodium and potassium gated ion channels in order to respond to a signal from another neuron open and…

Q: Chemical equation with name and color of main product Reagent (chemical formula (chemical formula…

A: The above are the tests for detection of the given ions:

Q: How do I fill out this chart  Reactions: NaHCO3(s) + HCl(aq) → NaCl(s) + CO2(g) + H2O(l)…

A: Mass of the mixture = 0.5093 g Mass of residue remaining after first weighing = 0.4537 g Mass of…

Q: You add Benedict's reagent to a test tube containing a solution to test for the presence of reducing…

A: The detailed solution of your question given below-- We know that Benedict solution is more…

Q: A student weighs out exactly 1.562 grams of p-aminophenol and exactly 40 mL of water. After…

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Q: 7. Oxygen we breathe attaches to a protein called hemoglobin (Hb) in red blood cells to form…

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Q: A student adds 2.84 g of anhydrous sodium sulfate to his wet solution. What is the maximum amount of…

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Q: Explain Conjugated Systems ?

A: To explain the conjugated systems.

Q: 4. What is the ThOD of a solution containing 130 mg/L sucrose (C₁2H22O₁1)? C12H22O11 + 12 O₂ → 12…

A: Given C12H22O11 + 12 O2 → 12 CO2 + 11H2O

Q: Use the dropdown menu to indicate the reagent for the conversion of glucose to each of the following…

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Q: What are the different methods of clarification of cane juice and chemistry involved in the…

A: The purpose of the clarification process is to remove as many nonsugar components as possible,…

Q: illustrate the intermolecular bonding of KCl with itself

A: KCl is an ionic compound.  It is made up off K + and Cl- ions .

Q: The amount of light ( or the number of photons) absorbed depends on several factors including how…

A: To find: In a solution this depends on the optical path and the ___ of the solution

Q: Which of these acts as a buffer in embalming fluids?     sodium lauryl sulfate     EDTA…

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Q: Calculate the number of moles of NaOH used in the reaction . 20% NaOH solution was used .

A: Here , 20 % NaOH used . It means that for 100 g of solution , we have 20 g NaOH &   80 mL water.…

Q: 4. If the pH of a solution is determined to be 7, what would be the concentration of [H3O+]? What…

A: pH = 7, we need to calculate [H3O+] [OH–] = 1×10–8, we need to calculate [H3O+]

Vitamins and Coenzymes

A class of organic compounds needed in the human body for normal activities is known as vitamins. They are characterized into two parts depending upon their solubility in water. They can act as coenzymes, cofactors, or prosthetic groups for enzymes.