Mass percent of an element in a compound represents _________________________. Answers: the total grams of the element in the compound   the ratio of the grams of one element in the compound related to the grams of one mole of the whole compound   the ratio of grams of one element in a compound related to grams of another element in the compound   the ratio of moles of one element in a compound related to one mole of the whole compound

Q: Element XYZ has two isotopes: XYZ-79 (mass =69.9943 amu)  and XYZ-81 (mass=80.9893 amu). If the…

A: Given,Element : XYZ                                                 XYZ-79…

Q: A 0.517 g sample of steam at 104.0 °C is condensed into a container with 5.53 g of water at 14.5 *C.…

A: The answer for this problem is provided below in great details within the attached figure.

Q: Hw.184.   Provide the major organic product in the reaction below: 1) Methyl-1,2-cyclopentene…

A: Epoxide are highly strained molecule readily opens by weaker nucleophile. This opening is…

Q: Explain major depressive disorder. State the factors which predispose an individual to depression

A: Depression is a common mental health disorder that affects millions of people worldwide. It is…

Q: Zn(s) Circle one: VOLTAIC/ELECTROLYTIC Substance oxidized: Substance reduced: Cu(s) + 2 AgNO3(aq)…

A: Solution 3). Zn (s) + Pb(NO3)2 (aq) And 4). Cu (s) + 2 AgNO3 (aq)

Q: Solid calcium oxide reacts with carbon dioxide gas to produce solid calcium carbonate (CaCO3).…

A: Balanced chemical equation: Balanced chemical equation can be defined as the reaction in which…

Q: Give the IUPAC name of the compound below.

A: The IUPAC name (International Union of Pure and Applied Chemistry) refers to the standardized system…

Q: Question 6 Which is the most stable compound? cis-1-ethyl-3-methylcyclohexane or its stereoisomer…

A: Stability comparison of cyclohexane isomers. The Stability of the isomers in the given question…

Q: o 15.1 L N₂ at 25 °C and 125 kPa and 35.9 L O₂ at 25 °C and 125 kPa were transferred to a tank with…

A: It is given that 15.1L N2 25°C and 125 kPa and 35.9L O2 at 25°C and 125 kPa were transferred to a…

Q: 6. Eggs shipped from a poultry farm in trucks. Each carton of eggs holds 12 eggs. The cartons of…

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Q: Gas volume in the lungs after exhalation is 3.4 L. The pressure after exhalation matches atmospheric…

A: a) We have to calculate the number of moles and number of molecules of the gas  b) we have to…

Q: Draw Lewis structures and assign formal charges for the following compounds and ions. Note any…

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Q: Using the shell model sketch the energy level diagram of 42 K. Determine all the possible…

A: Given Data:   Mass no. Of K(potassium)= 42 Atomic no. Of K = no. Of protons= 19, No. Of neutron=…

Q: Predict the products of the following reaction. If no reaction will occur, use the NO REACTION…

A: Answer:- This question is answered by using the simple concept of chemical reaction of metal…

Q: If an electron has an uncertainty in its position of 1.20 × 10-² m, what is the uncertainty in its…

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Q: Determine which statements are consistent with Dalton's atomic theory. Consistent Answer Bank Atoms…

A: Atom consist of small particles. In an atom, there is nucleus at the center and electrons are…

Q: The following materials are reacted together according to the equation below   5.00 moles of KReO4…

A: Given 5.00 moles of KReO4 14.00 moles of H2S 6.00 moles of HCl         To find many moles of H2O…

Q: (1) Identify each of the following half-reactions as either an oxidation half-reaction or a…

A: Electrochemistry is branch of chemistry in which we deal with oxidation and reduction reaction…

Q: II. Write the line bond and condensed structures of the following alkynes. Alkyne 1-penten-4-yne…

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Q: Problem Four In the structure of this isotopically-labelled (and anti-cancer therapy) drug…

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Q: Carbon dioxide and water react to form methane and oxygen, like this: CO₂(g) + 2H₂O(g) → CH₂(g)…

A: According to the Le chatelier's principal, " for a system which in equilibrium and we allow any…

Q: what is the molaity of the solution

A: Molality of a solution is defined as the no. of moles of solute present in 1 kilo gram of solvent.

Q: What is the molality of ions in a 0.477 m solution of Li₃PO₄ assuming the compound dissociates…

A: Since, Molality is the number of moles of solute dissolve in one kilogram of the solvent. Thus,

Q: The free energy change for the following reaction at 25 °C, when [Hg2+] = 1.15 M and [Cr³+] =…

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Q: 2. 3. 1. 4. 5. 5. 2. 0. Ť * mass of empty calorimeter mass of calorimeter + water mass of water in…

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Q: A student is asked to standardize a solution of calcium hydroxide. He weighs out 1.09 g potassium…

A: First, write down the reaction between calcium hydroxide and potassium hydrogen phthalate. Use this…

Q: At a particular temperature, K = 1.00 x 10² for the reaction H₂(g) +1₂(g) → 2HI(g) In an experiment,…

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Q: A 24.777 g sample of a gas has a pressure of 1.48 atm in a 5.00 L container at 305 K.  What is the…

A: Given :  Mass of sample of a gas(m) = 24.777 g Pressure of gas(P) = 1.48 atm Volume of container…

Q: How many ppm of phosphate are contained in a solution of 10 mM phosphate? Please show all…

A: If you have a specified volume of solution of known molarity, you can quickly determine how many…

Q: Using the nuclide chart find, among nuclides with mass number A=77, the stable one. Enter the…

A: A nuclide chart is a graphical representation of all known nuclides, which are different forms of…

Q: 1. If you are the medical technologist, which of the four methods of glucose determination would you…

A: 1. A Medical technologist would choose the method that is appropriate based on the sample type, the…

Q: All forms of matter are made up of particles which can be single atoms or molecules. O True False

A: •Given:- All matters are made up of particles which are atoms or molecules.

Q: Identify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in…

A: Redox reactions are the reactions in which both oxidation and reduction reaction occur…

Q: If a gas is at a constant temperature and the pressure increases, what will happen to the volume?…

A: We have to answer what will happen to the volume when a gas is at a constant temperature and the…

Q: Give the IUPAC name for the following compound. 3 di ethyl sa 2,7-dimethyl 5-tert methyl decane

A: 1) Select longest parent alkane chain having 10 carbon so decane 2) numbering always start from that…

Q: What gas(es) are present in the collection container? A. H2, O2, and H₂O gases C. CO₂ and H₂O gases…

A: When we heat any solid substance, it decomposes. Thus, if we heat KClO 3, then it will decompose.

Q: Q3.1 What the pH of a 0.020 M solution of benzoic acid in water? You know: Ka (benzoic acid) = 6.3 ×…

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Q: The rate of a certain reaction is given by the following rate law: rate = k[H₂] [¹₂] Use this…

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Q: What is the calculated value of the cell potential at 298K for an electrochemical cell with the…

A: The given cell reaction is Co(s)  + Cl2 (g) →→ C  Co2+ (aq) + 2Cl- (aq) The concentration of Co2+,…

Q: 1- Which statement does not describe an endothermic reaction? a. The surroundings cool down. b.…

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Q: For the following electron-transfer reaction: Hg2+ (aq) + 21 (aq) Hg(1) + I₂(s) The oxidation…

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Q: a On the basis of the general solubility rules, which choice explains why sodium sulfide would be…

A: In the multiple choice questions(MCQ), we solve only first three subparts according to the Bartleby…

Q: Acetylene (C₂H₂) gas is often used in welding torches because of the very high heat produced when it…

A:

Q: Two glass bulbs each having a volume of exactly 1L are connected by a valve. The left bulb contains…

A: The Ideal Gas Law is a fundamental relationship between the pressure, volume, temperature and the…

Q: ▼ Part D Write a balanced chemical equation for the reaction Li₂CO3 and AgNO3 Express your answer as…

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Q: Consider the following mathematical expression: (2.4 × 10³) (2.24 × (2.54)³) 0.7217 x =X The answer…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: In naming alkyl halides, the -ide ending becomes -ic. If the halide is in an acidic form, the prefix…

A: •Here given:- (Br-) . •This become acid so we have to write the name of this given halide and its…

Q: Draw structures for each of the following species. A. trans-bis(ethylenediamine)difluoroiron(III)…

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Q: Imagine an alternate universe where the value of the Planck constant is 6.62607×10 J-s. In that…

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Q: Determine the Ksp of iron (II) carbonate, Fe(CO3), if the concentration of Fe*2 is found to be 5.66…

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.