A correct order of reactivity of acid derivatives towards nucleophilic attack is esters > amides > anhydrides anhydrides > esters > acid chlorides acid chlorides> anhydrides > amides esters > acid anhydrides > amides Oanhydrides › amides › esters

Q: a. Br2(l) is    what  in C6H6(l) b. C8H18(l) is  what  in C6H6(l) c. AgCl(s) is    what  in…

A: The two liquids that dissolve in each other in all proportions are called miscible liquids. The…

Q: The inner core is Question 19Answer a. made of molten rock. b. the least dense layer of the…

A: D. The densest layer of the EarthExplanation:The inner core is the densest layer of the Earth due to…

Q: 9. Who discovered optical activity? a) J. H. van't Hoff b) J. A. LeBel c) L. Pasteur d) Kekule

A: The characteristic of a molecule due to which it is able to rotate the plane-polarized light is…

Q: What is mustard gas?

A: Mustard gas is also called sulfur mustard.

Q: 40 Calculate the number of protons, neutrons, and electrons in Ca. 20

A: The number of protons, neutrons, and electrons in 20 Ca 40 can be calculated as

Q: If a patient is administered  10 ng  of  technetium−99m,  how much will remain 1 d later, assuming…

A: The number of half lives present in 1 day (24 hours) is 4.

Q: A patient was given a 200 mg intravenous drug with a half-life of 15 minutes at 08:00. At what time…

A: The objective of this question is to determine the time at which 6.25 mg of a drug will remain in…

Q: 21.A waterway contains 10.3 milligrams of an impurity per gallon of water. How many micrograms of…

A: As you didn't mention any questions to be answered, we will be answering Q.21. As we know, 1 gallon…

Q: What do you mean by alchemy?

A: A person who practices the study of alchemy is known as an alchemist. In ancient times an alchemist…

Q: the a 167436) b.-157436) 3731.25) d.3731.25)

A:

Q: Where do free radicals come from? What harm do they do?How is the body protected from free radicals?

A: Free radicals are produced in three main ways: - 1. Metabolic reactions: - The normal chemical…

Q: Explain the michaeli's equation?

A: The enzyme surface contains a definite amount of active sites, where the substrate can get attached.…

Q: If a patient is administered  60 ng  of  technetium−99m,  how much will remain 1 d later, assuming…

A:

Q: The isotope carbon-14 is radioactive and has a half-life of 5730 years. If you start with a sample…

A:

Q: A sample initially weighs 48 g. How much would remain after 3 half-lives?

A:

Q: what does rectified spirit contains?

A: Rectified spirit is also known as ethyl alcohol. Generally, it is purified by using distillation…

Q: Answer all questions 1. It has been announced on radio that a toxic gas is spreading towards UENR…

A: The solution is given below -

Q: side effects of tween 80

A: Tween 80 is also known as polysorbate 80. It is non ionic surfactant. It is used as emulsifier in…

Q: What are the rare earth elements?

A: Elements is a term that is used in chemistry for a substance i.e. pure and which consists of atoms…

Q: what Na stands for

A: A symbol is a notation that generally consists of 1 or 2 letters which is used to represent a…

Q: O,N. 11. Br O,N" 12.

A:

Q: A woman weighs 59.0 kg and is given 720. mg pills of a drug The concentration of drug inside the…

A: Half-life = 3hrweight of women= 59 kgmass of pills = 720mg∴ initial concentration of pill, N∘=…

Q: MCQ 25: Fireworks release energy in the form of A. heat B. light C. sound D. all of above

A: We know that,. Firework happen then three phenomena appear, 1)Heat 2)Light 3)Sound

Q: Popcorn pops because there is a what type of CHEMICAL evolution:  a. oxygen b. water vapor c.…

A: Along with time interval, a change that brings difference in the structure of molecules, that is,…

Q: How is iodine classified?

A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These particles…

Q: What did Alexander Fleming discover that earned him the 1945 Nobel prize for medicine?

A: In 1945, the Nobel prize in medicine was awarded to alexander fleming.

Q: Which of these equations correctly represents the Haber process?

A: Given reactions

Q: 22. All atoms of Tungsten have exactly protons

A: Number of protons in tungsten (W)

Q: what is tin plague or tin disease?

A: Allotropy is the property of chemical element to exist in at least two distinct structures that…

Q: How many protons, neutrons, and electrons are present in a singleatom of:a. phosphorus-30 b.…

A: (a) Since the atomic number of phosphorus = 15  Hence number of electrons = Atomic number = 15   And…

Q: What are the materials and safety requirements for performing the SN1 experiment?

A: We will discuss the materials and safety requirements for the SN1 experiment performed in the…

Q: What about part 4?

A: Answer:Charge on 1 mole electrons is always equal to farday constant and its value is equal to…

Q: QUESTION 23 231Thg0 14. 235U92 [a].

A: We have to predict what stands for a here.

Q: A substance has a half-live of 5 minutes.  We have 50 grams of substance.  If 60 minutes has passed,…

A: The solution is as follows :

Q: 1. If you turn on the burner on a gas stove under a pan of cold water, energy moves from the burner…

A: This mode of transfer of energy is called conduction because there is direct supply of heat between…

Q: What is a chain reaction and what causes it?

A: What is a chain reaction and what causes it?

Q: 7. What do the study findings suggest to us about our overall question, "How should we search for…

A: For life on earth depends six elements : carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur.…

Q: 12) How much material is left when you start with 15-g and you have gone through 1.63 half-lives?

A: Radioactive decay happens when a nucleus is subjected to radiation and breaks down into a number of…