How many molecules are contained in 25.23 grams of dihydrogen sulfide (H2S)

Q: Write the main product of the following reaction and say if the reaction has gone through an SN1,…

A: 2-Chloro-2-methyl butane is a tertiary alkyl chloride. In most of the cases, tertiary halide…

Q: Write the IUPAC name of the following ALKYNES:

A: IUPAC nomenclature is used for naming the organic compound as recommended by international union of…

Q: access important values if needed for this question. The reaction of nitrogen dioxide with fluorine…

A:

Q: How many molecules of hydrogen fluoride (HF) are in (2.1x10^-2) moles of hydrogen fluoride (HF)?…

A: Given  2.1×10-2 moles of HF  N0 = 6.022×1023

Q: Consider the equilibrium for the transesterification reaction.How do you think the amount of…

A: #1:  The balanced equation for the esterification reaction is: RCOOH(Acid) + R"-OH(1-propanol)…

Q: Lance obtains a silvery metallic unknown. He weighs the metal and finds that he has 60.55g. When he…

A: Given - Mass of metal = 60.55 g             Initial volume of water= 25.2 mL            Final volume…

Q: Calculate the number of g of iron that can be made from 16.5 g of Fe2O3?

A:

Q: How many grams of oxygen (O) are present in a 6.41 g sample of potassium nitrate (KNO3)? Enter your…

A: Potassium nitrate (KNO3) is ionic compound and it contains one potassium, one nitrogen and three…

Q: Show the following. NOL d Phind MP C₂450-Not C₂HTOH 44 4-85 ba DIE 48 109 2) Vo C WY HOH F+G 4

A:

Q: 1. On October 22, 2020, the FDA approved Veklury (remdesivir structure shown below) for use in…

A: The Kier Hall electronegativity index is calculated as: χ=column number-number of sigma bondsrow…

Q: How is the term solubilty: Represent and quantify chemical reactions at the atomic level?

A: Solubility is the amount of substance dissolved in given amount of solvent at specific temperature.…

Q: . How can the water displacement method be used to measure solid? the density of tan…

A: To measure the density of a solid , we need its mass and volume .

Q: How many moles are contained in 251 grams of Fe2O3? First determine the molar mass of Fe2O3. Can…

A:

Q: MCC powder contains 86.6% proteins and WPI powder contains 93.4% protein. Calculate the amount of…

A: The amount of powder required can be figure out from the concentration of solution required.

Q: The density of gasoline is 0.65 g/mL. What is the mass in pounds of 45.0 L (about 12 gal) of…

A: Since, Density of the liquid is the ratio of mass to the volume of that liquid. Thus,

Q: Practice Questions: Lidocaine is a local anesthetic drug with a pKa of 7.7. ● • Based on the…

A: Given the pKa of Lidocaine, pKa = 7.7  Neutral water, H2O has a pKa of 7.0  pKa and Ka values are…

Q: Calculate the volume, in milliliters, of a 0.520 M KOH solution that should be added to 4.000 g of…

A: Data given:  Molarity of KOH solution = 0.520 M = 0.520 mol/L (M = mol/L)  Mass of HEPES = 4.000 g…

Q: What functional group is indicated by the arrow? Percent Transmission (Transmitance) 0.8 0.6 0.4 0.2…

A:

Q: If you had 1 mol of Cr8(PO4)3 how many moles of Cr would there be?

A:

Q: Is there any importants to the extra given information such as the molar mass of Ethanol (46.07…

A: To calculate the volume , we need only density formula.

Q: 1. V₂(SO4)3 -> Vanadium (III) Sulphate V₂(SO4)3->2V+3+3(SO 4)-² 2. Zn 3P 2 -> Tri zinc Di phosphide…

A: In solutions( aqueous ) the salt MaNb dissociates in aMb+ (cation) and bNa- (anion). Similar to this…

Q: Draw the skeletal (line-bond) structure of [CH₃CH₂CHC(O)CH₂CH₂CH₃]⁻. Include all lone pairs and…

A: In the skeletal line bond structure of an organic compound, carbon and hydrogens are not shown .…

Q: 20. Which of the following statements is TRUE? A) Entropy is an extensive property. B) Entropy is…

A: 20. Entropy is a measurable property of disorderness or randomness of a system. For a ordered…

Q: Calculate the molar mass of each compound given below.

A:

Q: Complete the table (the correct value for cell D8 is 5.0 10-3). What is the value of cell D11? X

A: The mass (mg) of the Fe after the dilution in the solution is same as in the given volume of stock…

Q: The relationship between [OH] and basicity is?

A:

Q: Which of the following contains a natural polymer AND a man-made polymer? a) Polyester and…

A: A natural polymer is the one which is found naturally in nature. A man made polymer is the one which…

Q: Sulfate (SO2) is typically determined by dissolving in H₂O followed by precipitation as BaSO4 via…

A:

Q: What are the similarities and differences between the everyday and technical meanings and uses of…

A: Similarities between the everyday and technical meanings of the terms insoluble and solubility In…

Q: QUESTION 1 One reaction predominates when acetamide is treated with sulfuric acid. Choose the…

A: In the given reactions, H2SO4 acts as an acid and donates proton(H+) to the base, acetamide.  A more…

Q: Unit conversions: How to do I convert 5(kg/hr)/3120(mg/L) to a measurement in (m^3/hr)?

A:

Q: Draw the skeletal structure of pentanal from the Lewis structure (shown below). Η Η Η Η Η :Ο: ||…

A: In the skeletal or bond line angle formula, each covalent bond between carbon-carbon or…

Q: Tell what sublevels there are in each of the following energy levels, and explain each answer in…

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Q: A 0.88g gummy bear is burned in a bomb calorimeter. The temperature started at 21.5 degrees Celcius…

A:

Q: the following, hydroxide, carbonate, and bicarbonate alkalinity by the procedures (1) using…

A: Given dataVolume of sample, V =100 mlNormality of titrant acid H₂SO4, N=0.020Consider the given…

Q: Resonance: Resonance form of ethyl propanoate Part A Draw the resonance structure of the following…

A:

Q: The mass spectrum of CH3F is given in the chart below. (a) Draw a likely structure for the molecular…

A: Mass spectrometry is one of the best techniques for analyzing the structure of a molecule and…

Q: Calcium crystallizes in a face centred cubic struture. The edge length of its unit cell is 558.8pm…

A:

Q: Write the structural formula of the following ALKENES: (NOT SKELETAL FORMULA) 1,2-butadiene…

A: Write the structural formula of the following ALKENES: (NOT SKELETAL FORMULA)   1,2-butadiene

Q: H C-CEC-CH3

A: Orbital diagram involves the orbital orbital overlap between two bonded atoms. In this diagram, lone…

Q: What is the pH of a solution containing 7.41 x 10-2 hydroxyl ions?

A: The hydroxyl ion concentration [OH-] = 7.41 x 10-2 M Now, pOH = -log[OH-] = - log 7.41 x 10-2…

Q: Matching type: What type of organic compound? 6) CH3CH₂CH=CH₂ 7) O || CH3-C- CH3 8) CH3OH 9) O…

A:

Q: This is normally prepared by increasing the temperature of the solvent to allow the dissolution of…

A: This is normally prepared by increasing the temperature of the solvent to allow the dissolution of…

Q: From the given reaction: 2 I2 + KIO3 + 6HCl = 5ICl  +  KCl  +  3H2O     How many grams of iodine are…

A: Given - Mass of ICl = 28.6 grams

Q: What type of orbital is not used in constructing the molecule shown below? 1. S 2. P 3. sp 4. sp² 5.…

A: The given molecule is ethyl acrylate.

Q: Q3. When the orgo students did the experiment, they weighed out 2.105 g of Salicylic acid  and mixed…

A: Answer: Molecular formula of Salicylic acid=C7H6O3 Molecular formula of Acetylsalicylic acid= C9H8O4…

Q: Draw the most important resonance contributor of the following structure. Interactive 3D display…

A:

Q: This is an impossible formula.  If it were real, determine the molar mass of: KBr•9H2O   K =…

A: Here we are required to find the molar mass of given compound KBr.9H2O.

Q: Doing the flame test is important in chemistry because of the following reasons EXCEPT this    a. it…

A: Doing the flame test is important in chemistry because of the following reasons EXCEPT this :

Q: Curved arrows are used to illustrate the flow of electrons. Follow the curved arrows and draw the…

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.