How many moles of a gas mixture would be needed to provide 0.555 mole O2, if the mole fraction of O2 in the mixture is 0.430 ?

Q: 2 Ranking from the highest to lowest boiling point is as follows: MgCl2>NaCl>Na>Cl2 Can someone…

A: ✓MgCl2 have more ionic character than NaCl have so it have more electrostatic force of attraction…

Q: Determine if the photosynthesis reaction is spontaneous at 80°C. Chemical Equation: CO2 + H2O →…

A: For the given Reaction -  CO2 + H2O → C6H12O6 + O2  On balancing -  6CO2 + 6H2O → C6H12O6 + 6O2…

Q: 100 a. 43 80 60 40 20 86 58 71 20 40 60 80 100 120 100 b. 57 80 60 29 40 86 20 20 40 60 80 100 120…

A:

Q: How did you get 2.69 x 10-12 ? When I did the caculation I got -5.16 x 10-22

A:

Q: What is the molarity of a solution that is made from 37.1 g of MgCl2 in enough water to make 910 mL…

A:

Q: Which of the following mechanisms is a correct representation of the first step of alkyne…

A:

Q: 7. F2 (g) NacI (s) +

A: Balance chemical equation, balance chemical equation can be define as the reaction in which number…

Q: /hich of the following is an exothermic process?

A: Exothermic reactions are those in which energy is released and endothermic reaction are those in…

Q: QUESTION 1 Use these pka values to calculate the charge on the peptide below at pH 6. alpha COOH 2.0…

A: T: Threonine, pKa: 9 S: Serine Y: Tyrosine, pKa: 10 M: Methionine C: Cysteine, pKa: 8 F:…

Q: Which of the following substances has the lowest boiling point?   Question 3 options: a CH3Cl b…

A:

Q: So, when there is no value given for a substance O2, you are to assume that it is zero?

A:

Q: Draw a plausible mechanism for the reaction shown below. Provide explanations for each step in the…

A:

Q: A coffee - cup catorimeter containg 30mt of water wih का फिमिधच नैदलकशवलर ठ 24.8°८. An ontoro. wn…

A:

Q: A student measures the potential of a cell made up with 1 M CuSO4, in one solution and 1 M AgNO3, in…

A:

Q: 14.59 Denitrification occurs when nitrogen in the soil is lost to the atmosphere. One way in which…

A:

Q: 1-methanol 2- ethanol 3- pentanol

A: HPLC determines the concentration of each component in terms of the intensity of peaks.

Q: अ @मांयंपल H is Pa=4.81 Pe=4'05 bak , 6= 4.63ba stendertonange in gibas fee enesy च अंट ? bak, P=451…

A:

Q: A chemistry graduate student is studying the rate of this reaction: NH4OH(aq)—>NH3(aq)+H2O(aq) He…

A: First we would use the given data to plot graph for each order of reaction ( 0 , 1, 2 ) to check the…

Q: Air conditioners dry the air while they cool the air. Suppose an air conditioner is used to cool a…

A:

Q: In a 0.50M aqueous solution of propionic acid (C2H5CO2H), what is the percentage of propionic acid…

A:

Q: If the pKa of an acid is 3.7, what is the Kb value of the acid?

A:

Q: Determine if the redox reaction of iron and water to form ferric chloride is spontaneous at 29°C.…

A: Redox reaction is 3Fe + 4H2O → Fe3O4 + 4H2 From data,  □Hrxn = (-1118.4) - (4×(-285.8)] = 24.8…

Q: Check the box next to each molecule on the right that has the shape of the model molecule on the…

A: Shape is determined on the basis of electron and molecular geometry of molecule.

Q: What is the observable result in the test for glycerol? Give the equation involved in the test for…

A: Glycerol has three hydroxyl group attached to the carbon. Glycerol is used as sweetner in food…

Q: When do you have to newtralize (acefit acil with before distillatfom ? ou sodium hychtride

A: Acetic acid forms azeotropic mixture with Water and their boiling points are nearly same.Therefore…

Q: 5. You studied the chemical reaction, 2NO2(g) → 2NO(g) + O2(g), at 25°C by monitoring the…

A: From this plot , we would predict order of reaction and use its equation to calculate rate constant.…

Q: How many grams of Na2CO3 can be produced when 74g of NaOH is mixed with 44g of CO2 in the following…

A: Limiting reactant is the reactant that is completely consumed in a chemical reaction.    Excess…

Q: What is the mass in grams of 1.13x1015 molecules of CS2 ?

A: Using Avogadro's number first we convert molecules to moles. Then using molar mass , we can…

Q: if 100 molecules of H2 and 34.0 molecules of O2 react, how many molecules of H2O can be produced?…

A:

Q: Calculate the pH at 25°C of a 0.68 M solution of potassium butanoate (KC3H7CO2). Note that butanoic…

A: Given, that the pKa of butanoic acid = 4.82 We have to calculate the pH of a 0.68 M solution of…

Q: 13.7 mL of CO2 is held at 11.7atm and 20°C in a fire extinguisher.  When the extinguisher is used,…

A: Here pressure, volume and temperature all are changing to combined gas law would be used to…

Q: Starting from Benzene, Carbon Dioxide, and any other reagents, how could you prepare…

A:

Q: A buffer was prepared by mixing 19.53 g NaF and 10.41 g HF in a 1.0 L reaction vessel. Ka = 7.1 x…

A:

Q: arrange the following solution from owest pH to highest pH: 0.20 М СH,CООН (К, — 1.8 х 10-5) 0.05 M…

A:

Q: Draw the skeletal formula of the following: 1.) 2,4-Pentanedione 2.) 3-Cyano-7-oxoheptanoic acid

A: 1.2,4-Pentanedione Chemical formula- C 5H8O2 IUPAC - Pentane -2, 4-dione 1.This is Organic Compound…

Q: 8. Potassium persulphate (Anthion) is used in photography to remove the last traces of hypo from…

A: Empirical formula and molecular formula of compound is to be calculated.

Q: Alkene reactant Products Name of the product (CH,),C=CHCH,CH,CH, + HCI CH CH, + H,0 4SO.. CH OH +…

A: Since, this is a multiple subparts questions. So, I will solved in details first three subparts for…

Q: CH3 HO. CH3 H но CH CH,Br 1. Mg, ether H. 2.? 3. ? 4. CrO3

A:

Q: Write the equation for the reduction of vanillin acetate using lithium aluminum hydride. Thanks!

A:

Q: The compound shown below is the product of a Clalsen condensation. Draw structural formulas for the…

A:

Q: CI H;CO- -N=N- F

A: Given,

Q: Similar to teams of ballplayers, elements have symbols (abbreviations or logos) and are arranged in…

A: Element name Element symbol Group number Period number  Chlorine Cl 7 3 Calcium Ca 2 4 Radium…

Q: 2. Name each of the fo llowing acids: OH a) CH;CH,CF,CH,COOH b) CH3-CH2-ČH–COOH СООН „COOH d) ОН…

A:

Q: What is the conclusion of the reaction involved in the determination of dissolved oxygen in water…

A:

Q: 8. Name each of the following amides: || a) CH3-ċ-Ņ- H II C-NH-CH,-CH3 b) c) CH3-CH,-CH,-CH,-C-ŅH

A:

Q: In a standardization procedure a student forgets to rinse the buret with a small portion of the EDTA…

A: ✓More EDTA is needed in the titration process. ✓because some of the EDTA will react with the water…

Q: What type(s) of intermolecular forces must be overcome when liquid dipropyl ether…

A: In this question, we will selected the correct intermolecular forces between the ether molecules.…

Q: Using the table of the weak base below, you have chosen Aniline as your weak base in the buffer…

A:

Q: 60. Silicon has three naturally occurring isotopes (Si-28, Si-29, and Si-30). The mass and natural…

A: For isotopes , total abundance of all isotope in total is 100% . So we can use given abundance of…

Q: Draw the sulfonamides produced, if any, upon the addition of BSC and excess NaOH to the test…

A:

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.