The following trace elements have been found to be crucial to the functions of the body. Indicate each as a metal, a nonmetal, or a metalloid. 14.22a. iron             b. vanadiumc. calcium      d. arsenic

Q: 8)For an adult rhe recommended dietey allowed for Se is 55 migrocrams a day. How many miligrams of…

A: 1 microgram = 0.001 milligram Then  55 microgram = 55 × 0.001 milligram = 0.055 milligram

Q: What are the uses of polyiodides? What are the importance of polyiodides?

A: The answer to the following question is-

Q: 29. What is the Ka and K» for HPO,??

A: Ka is the acid dissociation constant. It is a measure of how completely an acid dissociates into its…

Q: Explain why and agricultural drainage would contain high concentrations of phosphate  ions.

A: Introduction: Agriculture drainage is a necessary system, which helps to remove excess irrigation or…

Q: A certain solution has a hydrogen ion concentration of  0.0000221  moles per liter. Write this…

A: Scientific notation It is a useful way to represent very large numbers or very small numbers. In…

Q: A water sample was tested for BOD5, which was determined to be 50 mg/L. Which of the description is…

A:

Q: What will change the value of Ksp for Mg(OH)2? O Heat the solution. O Add water to the solution.

A:

Q: one of the followings about permanganate is a. self indicator b. more than one are c. antioxidant d.…

A: permanganate is self indicator permanganate is antioxidant permanganate is a complex agent

Q: Determine the concentration of DCPIP to oxidize the ascorbic acid (5 ml) Data Given: -standard…

A: Vitamin C or ascorbic acid is a water soluble vitamin. It is known to act as a reducing agent. The…

Q: A student that makes an observation that a colorless solution turns blue. This kind of observations…

A: Introduction to qualitative observation :- Qualitative observation deals with data that can be…

Q: 19- Select the correct statement.

A: Statement (a) is incorrect As the molecules and atomic size increase, it would lead to an increase…

Q: Why does oh form salts with only mg2+ and fe3+? How would I be able to answer this question if there…

A:

Q: sing appropriate chemical reactions for illustration, show how calcium present               as the…

A: chemical reactions for illustration,  calcium present as the dissolved HCO3- salt in water is easier…

Q: You decide to preserve some fish using sodium chloride.explain how the sodium chloride works as a…

A: Preserving fish using sodium chloride is called Salting , it is one of the oldest and common method…

Q: 7) Which process would NOT disrupt the weak interactions between two biomolecules in solution? a)…

A: OPTION B IS CORRECT ANSWER.

Q: 5. Permanganatometry is used to quantify? A) Iron (II) sulfate B) Zinc sulfate C) Silver nitrate D)…

A: Permanganometry is one of the techniques used in chemical quantitative analysis. It is a redox…

Q: The pka values of HF, HCI, HBr and HI are 3.2, -7.0, -9.5 and -10.0, respectively. HF is the…

A: The pKa value is negative logarithm value of Ka. Hence lesser value means stronger the acid.…

Q: It is possible to get a false positive or a false negative result when testing mineral groups.…

A: This is quite easy to get a false positive and negative test while testing for the cations and…

Q: 65.0 mL of 0.250 M LiCl is added to a 1.000 L volumetric flask and the flask is filled with water.…

A:

Q: 10x TE is 0.1 mol/L Tris-Cl and 0.01 mol/L EDTA. It is commonly made from 1.0 mol/L Tris-Cl and 0.5…

A: TE buffer is called Tris-EDTA buffer.

Q: 1. Demonstrate any 5 important applications of Calcium and the advantages of each application? 2.…

A: 1. Answer - According to the question - Humans need calcium to build and maintain strong bones, and…

Q: A student is holding a test tube containing a solution with the following heterogeneous solution:…

A: The graph given is as shown below.

Q: What is the absorbance of a 50 mM solution? A = As the concentration of the solution increases, the…

A: According to Beer Lambert law , the absorbance of the solution is directly proportional to the…

Q: 9.Hard water contains a greater concentration of Sodium, whereas soft water has a higher…

A: Given statement is :  Hard water contains a greater concentration of sodium, whereas soft water has…

Q: A 2.6 g sample of plant tissue was analyzed and found to contain 3.6 mg zinc, what is the…

A: Ppm is one of the ways to represent the concentration of solution  Here we are required to express…

Q: Calculate the number of grams of KOH required to neutralize 22.2 mL of H3PO4 with a concentration of…

A: molarity = moles/volume of solution(in L)  so, moles = molarity × volume (in L)     number of moles…

Q: Write a stepwise procedure using a 5 mL sample of Milk of Magnesia to determine the amount of…

A: Given, The volume of the sample of milk of Magnesia = 5 mL. The molar mass of magnesium hydroxide…

Q: 14 Whatvolume of 0.100 N HNO3 is required to neutralize 50.0 mL of a0.150 N solution of ?Bа(ОН)2 a)…

A:

Q: 5. Briefly discuss the effect of alkalinity on flocculation.

A:

Q: Which of the ff. is an steps will remove occluded nitrate in a filtrate of barium sulfate? digestion…

A: Please find your solution below : Occlusion is the process of inclusion of one substance with…

Q: Explain how you could separate an equimolar mixture of Compound X, Y and Z. w chart). он Compound X…

A: This problem needs a practical knowledge.  It is a practical thing to separate them.

Q: determine whether the following elements are paramagnetic or diamagnetic: - Rhuthenium -Rubidium…

A:

Q: In the laboratory, what would you use for the following? To hold a burette and a pipette during a…

A: In chemistry, there are many ways to check the deviation of experimental data from the accurate…

Q: A) According to some customers, the use of cosmetic X resulted in the appearance of dermatological…

A: Metals that could be Y- Lead (Pb), Mercury (Hg), Lead (Pb), Arsenic (As)

Q: What is the solubility of Cd₃(PO₄)₂ in water? (Ksp of Cd₃(PO₄)₂ is 2.5 × 10⁻³³)

A:

Q: 10. A total of 1.7 moles of sodium nitrate is dissolved in enough water 1 poin to make 2.5 liters of…

A:

Q: A splint has been soaking in an unknown solution. The tip of the splint is put into a flame.…

A: The flame test is basically done to detect the presence of particular ions. Li+ shows red brown…

Q: The carbonate that will not decompose on heating is : a  Na2CO3 b  CaCO3 c  BaCO3 d   SrCO3 e…

A: Alkali metal carbonates (except lithium carbonate) are highly stable and does not undergo…

Q: iew | Constants | Periodic Table A red blood cell has been placed into each of three different…

A: The answer is given below

Q: Sodium is stored in oil or kerosene because

A: Sodium  metal is stored in kerosene oil in order to prevent it from coming in contact with oxygen…

Q: 28. A certain vegetable dye is pink in acidic solutions, green in neutral solutions, and blue in…

A: The vegetable dye is pink in acidic solution , blue in basic solution. It is grren in neutral…

Q: increase

A: We know that the first few drops collected in the distillation process are the forerun that contains…

Q: Tabulate the difference between plasma and serum

A:

Q: What is the electron configuration of Protactinium (Pa) with steps?

A:

Q: MCQ 38: The temperature at which thermal decomposition of metal carbonates of Group I takes place A.…

A:

Q: A Sodium concentration in Horse Urine of more than 20 mEq of Sodium per 1 Liter of Horse Urine is…

A: Introduction: Sodium with atomic symbol Na belongs to group one elements. It's an alkali metal with…

Q: A colloid in which a solid is dispersed in a liquid is called a(n) Submit Answer Retry Entire Group…

A: