moles

Q: Find K for the reaction NH4+ ⇌ NH3(aq) + H+             Given,  H2O ⇌ OH- + H+     Kw = 1.0 ×10-14 ...

A: Equilibrium constant is the ratio of concentration or partial pressure of products amd reactants.  F...

Q: A sample of copper oxide weighing 2.013 g is dissolved in acid, the pH adjusted, and excess KI added...

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Q: A solution made with 0.130 moles of phosporic acid (H3PO4), dissolved in 183 mL of solution, was tit...

A: Given: Concentration of NaOH = 1.160 M. Moles of H3PO4 = 0.130 mol. Volume of H3PO4 solution = 183 m...

Q: thermometer. A 59.8 g sample of quartz is put into a calorimeter (see sketch at right) that contains...

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Q: Consider the titration of 100.0 mL of 0.250 M aniline, C6H5NH2, (Kp = 3.8 x 10-10) with 0.500 M HCI ...

A: Here concentration of aniline is given 0.250M... And we know that pH + pOH = 14...  

Q: Iron has a density of 7.87 g/cm^3 and crystallizes in a body-centered cubic structure. What is the a...

A: Body centred cubic unit cell have atoms that occurs at the corners as well as in the centre of unit ...

Q: 2. Write the IUPAC name of the following structure. b. Br с. d.

A: Following our answering guidelines, I am only solving the first three parts of the multiple subpart ...

Q: Write the structure(s) of the product(s) for each of the reactions below. Draw them on a separate sh...

A: The reaction is known as diels alder reaction. This is also called as [4+2]cycloaddition reaction, b...

Q: Name the highlighted chemical group in each molecule. Lewis structure name of highlighted group H H ...

A: We have to write the highlighted chemical group in the compounds given in the question .Let's write ...

Q: Which of these substance is an organic polymers?   a) Cellulose b) Polyvinyl chloride c) Polyester d...

A: Organic polymers are those which contains only carbons atoms and no inorganic element is present.

Q: Arginine is an amino acid which has the following pKa values: pK1: 2.17, pK2: = 9.04, pKR = 12.48. C...

A: So, the net charge of arginine at pH = 4 will be +1.

Q: 6. Acid-Base Equilibria. If HNO, is added to water, how does [OH ] change? How does pH change? a Use...

A: For pure water,  [H+] = [H3O+]  Hydrogen ion is not stable so with water it form hydronium ion. [H+]...

Q: 275g. The soil

A: Mass of saturated pores= 275gm After drying  24 hours ,sample weight = 200gm  

Q: The variation of Gibbs energies of different substances with pressure depends on the phase of the su...

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Q: PCl;(g) + Cl2(g) = PCI5(g) K, = 0.0870 at 300 °C %3D A flask is charged with 0.50 atm PCI3, 0.50 atm...

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Q: S    +   6 HNO3  -->   H2SO4   +  6 NO2   +   2 H2O In the above equation how many moles of water c...

A: First We have to determine moles of nitric acid.

Q: Use your research skill to find out the size one three cylindrical tank, on Petrojam tankfarm. Find ...

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Q: Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid wat...

A: Mole ratio - Is the ratio between amount in moles of any two compound involved in a chemical  reacti...

Q: Determine the ground term symbols of the following, 02-, Cu*, Pt*, Er³+, Fe²+, Cr

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Q: If the rate of formation of nitrogen monoxide is 0.413 M/s, what is the rate of disappearance of SO2...

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Q: If iodine is added to distilled water, the resulting mixture/solution will be what color?   Questio...

A: Given, Iodine is added to distilled water       Required,                   The color the resulting ...

Q: 2. Chemical Kinetics. The following mechanism has been proposed for the gasphase reaction of chlorof...

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Q: decreased blood volume

A: This is a multiple questions. According to guidelines in multiple questions, we can solve only two s...

Q: 6.) 200.0 mL of a 0.435 M Mg(NO3)2 solution was mixed 300.0 mL of 0.715 M NaOH solution. This result...

A: Volume of Mg(NO3)2 = 200ml Concentration of Mg(NO3)2 = 0.435M Volume of NaOH = 300ml Concentration o...

Q: Suppose you’re a scientist, trying to determine Z* for the first time of an unknown element. The onl...

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Q: Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium ...

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Q: Propanal and propanone react in a similar way with acidified aqueous potassium cyanide, KCN.  For th...

A: The molecular structure of propanal and propanone is given as follows;

Q: A beaker with 165 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total...

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Q: Write the clear balanced net iconic  hand written equation for the this reaction that occurs when am...

A: Net ionic equation is the chemical equation that shows only those elements, compounds, and ions that...

Q: How many calories are required to raise the temperature of a 150.g sample of gold from 25 Celsius to...

A: Given data is as follows: The mass of the gold sample = 150 g The initial temperature of gold Ti= 25...

Q: The following information is given for antimony at 1 atm:  Tb= 1440.00°C   Hvsp=(1440.00°C) = 1.605...

A: Answer: As, melting point of Antimony is 631°C, that's why total heat absorbed by antimony to raise ...

Q: How many atoms are present in 123 g of sodium cyanide (cyanide = CN-)?

A: Dear student since it is a multiple type question, according to guidelines here I am solving only fi...

Q: Chemical Kinetics. The following mechanism has been proposed for the reaction of NO with Hz to form ...

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Q: Calculate the normality of a calcium hydroxide solution of 5.18 grams of calcium hydroxide in 4.5 li...

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Q: What are the hazards and benefits of Nitro Compounds?

A:                                  Answer  The most prominent acute health hazard of the aromatic nitr...

Q: 2 NOBR(g) 2 NO(g) + Br2(g) A sample of nitrosyl bromide (NOB1) decomposes according to the equation ...

A: The equilibrium reaction given is, Given: Volume of vessel = 5.00 L. Mass of NOBr at equilibrium = ...

Q: rate law for the reaclion 204 . m O Rate A Rae RateA

A: Given : We have to predict the rate law for the given reaction.

Q: 3. What is the clinical significance of the sodium nitroprusside test? 4. What is the basis of the M...

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Q: CI CI (d) Observer

A: Here we have to write Newman projection of the following given molecules.  It is method to represent...

Q: Lewis structure

A: Since you have asked multiparts, we will solve the first three subparts for you. If you want any spe...

Q: Figure 1 H H H H---N:---H --N: H---N:--H ---0: H H H --D 0n B - *involves bond to polar molecules Qu...

A: Electrostatic force of attraction between proton of one molecule with the electronegative atom of an...

Q: Have 50 gallons of water dripping concentrated nutrients into the water system. Need a concentration...

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Q: > NEXT E Question 1/7 Exarmine the reaction showrn below. Using the rules provded, predict the react...

A: Potassium chlorate ( kClO3) with chlorate ClO3 break down into oxygen gas and chloride compounds. Th...

Q: Calculate the fraction of N2 molecules with speed at 550K in the range of 300 m/s to 320 m/s.

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Q: Using the information from the table below, calculate the Nernst Potential for Na+, K+, Ca+2, Cl-. A...

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Q: "In our bodies, sugar is broken down with oxygen to produce water and carbon dioxide." What volume o...

A: To Solve this problem we will use the given balanced chemical equation and ideal gas equation to cal...

Q: What the molecular polarity of carbon tetrachloride?

A: Answer: Polarity of a bond depends upon the dipole moment of the bond which is directly proportional...

Q: A major component of gasoline is octane (CH8). When octane is burned in air, it chemically reacts wi...

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Q: 69. Carbon reacts with water vapor at elevated temperatures. C(s) + H2O(g) = CO(g)+H2(g) Ke = 0.2 at...

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Q: Determine the attractive forces that exist in: a) AlF3 b) CH3F c) C

A: The substances given are AlF3, CH3F and C.  

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.