If you have 2.00x10^12 atoms of an element and it weighs 3.94x10^-10g, answer the following questions:  (1) The molar mass of the element to one decimal place is what g/mol. (2) Based on your molar mass the chemical symbol for the element is ?

Q: The figure below depicts a plane of atoms of radius R in some crystal. The plane intersects the…

A: We have to select two options given above which is consistent for the above figure given above.

Q: 3. As part of an experiment, you need to make 150 mL of a 0.750 M ammonium hydroxide solution from…

A: Molarity of the required solution, C = 0.750 M or 0.750 mol/L  Volume of the required solution, V =…

Q: What is the pH) at 25° C of the solution obtained by dissolving a 5.00-grain tablet of aspirin…

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Q: For gravitational forces, select which statements are always true. Are mediated by fields Require…

A: According to Newton's  law of gravitation "The force of attraction between  two object is directly…

Q: Calculate the activity of the bromide ion in a solution that is 0.050M KBr, 0.050M NaBr, and 0.050M…

A: Given that Concentration of KBr,NaBr and HBr.  0.050M KBr, 0.050M NaBr, and 0.050M HBr.

Q: Which element, sodium or magnesium, must have an electron affinity closer to zero? State your…

A: Which element, sodium or magnesium, must have an electron affinity closer to zero?

Q: please help with all parts Convert the following condensed structures to Kekule´Kekule´ structures,…

A: A Kekule structure is like a Lewis diagram, where all the bonding of the molecule is shown along…

Q: The structural formula of caffeine below appeared in a recent chemistry textbook. Check the number…

A: This is diagrammatic representation of molecules in which bonding and non bonding electrons are…

Q: 1. Indicate the geometry of each carbon atom (i.e., linear, trigonal planar, tetrahedral) H :O: HH 1…

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Q: Water is heated to 0°C with a constant pressure of 1x10-3 atm     Water is compressed to a…

A: 1) Water is heated to 0°C with a constant pressure of 1x10-3 atm: at this condition solid water…

Q: Chemi how m atom A. 16 B. 20 C. 17 D. 19 E. 35

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Q: How much heat (in kJ) is required to raise the temperature of 72.0 g of water from 35°C to 103°C of…

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Q: 10. What is the major 1,2-addition product of 2-methyl-1,3- butadiene when reacted with HCl? B) What…

A: The concept of given question is taken from Organic chemistry. The detailed mechanism is done on…

Q: I need the theoretical molar extinction coefficient of paranitrophenol in mol^-1cm^-1 (using moles…

A: Molar extinction coefficient is an intrinsic property of a compound which doesn't depend on…

Q: cubic angstroms (1 angstrom = 10-10) Express your answer in cubic angstroms to two significant…

A: 1 m = 1010 Å we have  volume of hydrogen atom = 6.2 * 10-31 m3 or volume of hydrogen atom = 6.2 *…

Q: What is the heat of reaction? Is the reaction exothermic or endothermic? Are the reactants (A + B)…

A:

Q: 1. Define what matter is. 2. How does physical property differ from chemical property? Cite an…

A: Everything that surrounds us is made of matter.

Q: (a) If 83.0 g of ice at 0.0oC is placed in 235mL of water at 28.0oC, find the final temperature of…

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Q: Problem 3: A compound with molecular formula MW (CsH100=86). The infrared spectrum shows a strong,…

A: IR spectroscopy is used to determine the functional groups present in the sample. Different…

Q: a) b) F 3 * 2 Н. O O 2 2 3 CH3 3 Ō CI I configuration C2 configuration C3 2 3 configuration C2…

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Q: In the Periodic Table below, shade all the elements for which the neutral atom has a valence…

A: To determine the elements with the given valance electronic configuration, we would determine the…

Q: The following arrows are incorrectly drawn and I drawn them correctly please check if it's right and…

A: In this question, we will give explanation with correct resonances for each wrong resonance…

Q: You and your friend are sitting around a campfire and he notices that the ashes that are left after…

A: Concept based on the law of conservation of mass.

Q: Explain the imporatnce of adding HCl during the washing of the initial precipitate

A: A question based on analytical separation that is to be accomplished.

Q: > Within atoms, there is an ongoing relationship between the nucleus and the electrons. Categorize…

A: Nucleus : Nucleus is a tiny part of an atom, consisting of protons and neutrons . It is spherical…

Q: Consider the following system at equilibrium where Kc = 0.159 and AH° = -111 kJ/mol at 723 K. N₂ (g)…

A: We would use Le-Chatelier's principle to determine the answers.

Q: Consider the following system at equilibrium where Kc = 55.6 and AH° = -10.4 kJ/mol at 698 K. H₂ (g)…

A: In this question, we will see that in which conditions the production of HI is favored that means if…

Q: Consider the following endothermic reaction system at equilibrium: 2SO3(g) ₹ 25O₂(g) + O₂(g) Predict…

A: To study the affect of the changes on an equilibrium reaction, we would use Le-Chatelier's…

Q: 11. What is the relationship between these two molecules? Are they enantiomers, diastereomers, or…

A: In the first molecule (left side), two -OH group remain in same side and one -OH group remain in…

Q: Administration of digitalis, a drug used to control atrial fibrillation in heart patients, must be…

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Q: What are the top ten producers of potatoes?

A: Potato has gained popularity around the world in recent years. The chemical name of the potato is…

Q: Suppose someone did not put enough 3M HCl in a beaker and conducted a filtration of the cloudy…

A: The yield of the compound we desire to obtain can depend on multiple factors. Here, we are going to…

Q: On a planet with different gravity, would the Molarity of water be different? Explain your reasoning

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Q: What answer should be reported with the correct number of significant figures, for the following…

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Q: The answer to   (315.8 g + 4.52 g)  has how many significant figures?

A: In this question, we will find out the number of significant figures in the final answer.…

Q: Which of the arrows shown should go in the box? (1) O Arrow 5 Arrow 1 Arrow 3 Arrow 4 Arrow 2 OH (2)…

A:

Q: Consider a hypothetical chemical reaction: A+B C+D (In this equation A, B, C and D stand for some…

A: 1.) The nature of reaction can be determined from the energy of reactants and products.  2.) The…

Q: The structure of haemoglobin: A. has an alpha-beta architecture. B. is a hetero tetramer. C. is a…

A:

Q: Q3: Distinguish by the mention of one detector between the compounds with giving the cause and the…

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Q: Consider the reaction: P(s) + 5/2Cl₂ (g) → PC15 (9) Write the equilibrium constant for this reaction…

A: The equilibrium constant is an expression written for an equilibrium reaction. It is a ratio of the…

Q: ✓ Part A Y Use an Arrhenius plot to determine the activation barrier (E) for the reaction. Express…

A:

Q: At a certain temperature the vapor pressure of pure heptane (C7H16) is measured to be 331. mmHg.…

A: Given data :

Q: Tungsten is a rare metal found naturally on earth almost exclusively combined with other elements in…

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Q: The mass of a neutron is 1.6749×10−24 gg , and the mass of a proton is 1.6726×10−24 gg . What is the…

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Q: When a distilled water is distilled is there any residue at the bottom part of the distillation…

A: Solutions- Distillation of water.

Q: 2-2. Do you predict apolar bonding and micelle formation to occur when oleic acid in its RCOOH form…

A: Formula for oleic acid is: C18H34O2 Oleic acid has a COOH part and a hydrocarbon part [C17H33]

Q: -90 degrees Fahrenheit Is what in Celsius

A:

Q: NEW August 17, 2020. Which of the following pairs is paired wroly? A a. Volumetric methods are…

A: From the statement we can tell that which paired wrongly.

Q: Systematic (blank), in which the name of a compound describes its structure, was first ntroduced by…

A: Some rules were established by the International Chemistry Committee in 1892 and were…

Q: 55.09 AL Express your answer in moles to three significant Agures.

A: To calculate moles of Al in given mass , we would use molar mass of Al.

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.