How many moles of Kr are there in a sample of Kr that contains 6.05x1023 atoms? moles

Q: Complete the table below by deciding whether a precipitate forms when aqueous solutions precipitate ...

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Q: THE CHEMISTRY OF CANDY: MAKING TAFFY The ingredients in taffy contain sucrose, glucose. and triacylg...

A: The ingredients in taffy making is glucose,sucrose,corn syrup, triglycerides.

Q: How many grams are present in 2.4x1045 molecules of H2O2?

A: Given :- number of H2O2 molecules = 2.4 × 1045 molecules  To calculate :- mass of H2O2 (in grams)

Q: Suppose that in the experiment the student failed to heat the crucible and hydate sample long enough...

A:   Question : Suppose that in the experiment the student failed to heat the crucible and hydate sampl...

Q: A 28.7 mLmL sample of a 1.24 MM potassium chloride solution is mixed with 14.7 mLmL of a 0.870 MM le...

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Q: 5) putting the least acidic first. Rank the following compounds in order of increasing acidity, CH3C...

A:   Inductive effect: Partial displacement of sigma electrons towords more electronegative atoms side ...

Q: If the mineral pyrite, FeS, is heated strongly in air, Iron (III) oxide and sulphur dioxide are prod...

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Q: 1. Provide two advantages and two disadvantage of flow cytometry analysis. Briefly explain each.

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Q: но. CH;0,

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Q: Solve both parts otherwise I will downvote

A: We are given two reaction and in both we have to write the mechanism of reduction of alcohol to alde...

Q: но. CH30.

A: Chiral center is the atom which is bonded to four different compounds or species.

Q: (a) Is it true that 26.3 mpg gasoline translates to 319 g CO:/mi? i. Convert mpg (miles per gallon) ...

A: We have to find out that Is it true that 26.3 mpg gasoline translates to 319 g CO2/mi.

Q: Find the representatives of the operations of the group Dah, using the valence s orbitals of boron t...

A: Group theory is the study of symmetry, symmetry elements and point groups.

Q: The Predict the product....   b) Label any kinetic/thermodynamic produc...   c) Give reason towa...

A: Kinetic product is the product that form quickly where thermodynamic product is the product that wil...

Q: 9. Which of the following amino acids is most likely to be found on the surface of a globular protei...

A: The correct answer is glutamate.

Q: Give the condensed structure and IUPAC Name of the following

A: Given structures are : Give the condensed structure and IUPAC Name of the following = ?

Q: a. Mole Fraction of H2O2 b. Molarity

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Q: Explain how the dichromate-chromate equilibrium shifts in response to an increase or decrease in H+ ...

A: The dichromate and chromate ions are exist equilibrium in aqueous medium. In more acidic medium exis...

Q: 2. Provide an explanation (using resonance structures) for why the barrier for rotation about the ma...

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Q: Question 6 Which of the following chemicals is flammable? A) iron(III) chloride solution В acetone C...

A: A solution is made up of salute and solvent.Solute is present in small amount and solvent is present...

Q: I. Discuss the chemical basis of the positive and negative results of the chemical tests performed i...

A: Modified Furter -Meyer test is test for tocopherol or vitamin E. By heating tocopherol sample in wat...

Q: Does the classification of these compounds include flavonoids,alkaloids and so on? Solve with the st...

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Q: What happens to the stereochemistry during and SN2 reaction? Why? Provide a reaction to illustrate t...

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Q: molecules ar

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Q: Show the structures of the missing substance(s) in each of the following acid-base equilibria. Write...

A: Amines protonation takes place in presence of water to form alkyl ammonium ion.

Q: The following potential diagram summarizes the results of electrochemical studies of the aqueous sol...

A: The reduction potential of ClO4- to Cl2 will be the change of  total reduction potential of every st...

Q: Calculate the dead time (tm), based on the following log tr (min) vs. #Carbons plot for the GC-FID a...

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

Q: A 12.345-g sample of a solid mixture, containing both sodium hydroxide (NaOH) and sodium hydrogen ca...

A: For the produced CO2 gas,  Volume, V = 1.171 L Temperature, T = 23.3 °C                          = (...

Q: How many grams of sodium hydroxide are needed to make 735.67 mL of 17 M solution?

A: Given :-  molarity of NaOH solution = 17 M or 17 mol/L  volume of solution = 735.67 mL  To calculate...

Q: 6. In the previous section, we saw a molecule with trigonal planar molecular geometry. In this secti...

A: How trigonal planar & trigonal pyramidal geometry are different from one another ? 

Q: 2. What is the resulting isotope after the synthesis of alpha with 238U92? Write the complete synthe...

A: The symbol of an alpha particle is 4He2 .

Q: What is the net ionic equation for the following reaction? NazCO3(aq) + FeCI2(aq) --> FeCO3(s) + 2Na...

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Q: What mass of HCI, in grams, is required to react with 0.860 g of Al(OH)3? Al(OH)3(s) + 3HCI(aq) → AI...

A: The balanced equation is, AlOH3s+3HClaq→AlCl3aq+3H2Ol Mass of Al(OH)3=0.860 g Moles of Al(OH)3 is, m...

Q: Give the condensed structure and IUPAC Name of the two

A: Given structures are : (a). (b). Give the condensed structures and IUPAC Names = ?  

Q: Sam is having a great deal of difficulty with thermodynamics, particularly when systems are not idea...

A: When system is ideal and when cooked pizza is delivered to sam, it is not going to cool by external ...

Q: A compound of bromine and fluorine is used to make UF6, which is an important chemical in processing...

A: Mass percentage of bromine is 58.37% Moles of bromine and flourine and emperical formula is calculat...

Q: Consider the following prescription: Promethazine HCl 62.5 mg NaCl Nacl sb 50 mL SWFI ad Make isoton...

A: Given, Promethazine HCl = 62.5 mg NaCl = qs SWFI  ad   = 50 mL Make isotonic solution E-value of pro...

Q: via beta emission, an-

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Q: Classify the following substituents according to whether they are electron donors or electron accept...

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Q: 4b. Combustion of 3.500 g of butane gas (C4H10; Mm = 58.12 g/mol) causes a temperature rise (AT) of ...

A: Answer: Whenever combustion of any hydrocarbon takes place, heat evolves. The value of heat evolved ...

Q: I I Least reactive Most reactive

A:  SN1 reaction is substitution nucleophilic unimolecular reaction. Stability of reaction depend upon ...

Q: How many liters of oxygen gas at STP are required to react with34.7 g of aluminum in the production ...

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Q: What is observed when neutralization occurs?

A: Neutralisation : Neutralisation is the process in which acid and base reacts to form water and salt....

Q: What is the molarity of a solution containing 18 mol of sodium in 678 L of water?

A: Moles of sodium=18moles Volume of water=678L

Q: Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are ...

A: We can decide on the fate of these given reactions in the question based in the solubility pattern o...

Q: 5. How many molecules are in 142.69 L of CH4? A V-M. a. 8.59 x1025 molecules b. 6.37 molecules C. 3....

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to ...

Q: Sodium hydroxide is used to clear clogged drains. A solution of NaOH has a pH 1 2 of 9.52 at 25C. Wh...

A: Given,  pH of NaOH solution = 9.52  Calculate the pOH = ?  Calculate the [H3O+] = ? Calculate the [O...

Q: What document may contain useful information about the hazards of a chemical? (A) Course syllabus (B...

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Q: CI

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Q: relationship betwe

A: Enantiomers are mirror images that are non super imposible on each other. Diastereomers are non mirr...

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.