Lithium carbonate, Li2CO3, contains 18.8 % lithium and is used in the treatment of mental illnesses such as bipolar disorder. What mass of lithium is present in a 1.18−g dose of lithium carbonate?

Q: 21. Solid ammonium carbamate, NH4CO₂NH2, decomposes to ammonia and carbon dioxide when it sublimes:…

A: Reaction :Equilibrium constant value at 25 oC is

Q: Equilibrium 1. write the equilibrium expression for the following reaction 4 NH3 (g) + 7 O2 (g) = 4…

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Q: H3C CH3

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Q: a) Calculate the molecular formula and the empirical formula with the following information PM:…

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Q: OH H₂SO4, A Grogand Regt 1) 2 equiv MgBr 2) H₂O

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Q: If 7 g of zinc reacts with 2 g of oxygen, how many grams of oxygen are remaining after zinc oxide is…

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Q: For each of the following, state whether the two structurel formulae show represent constitutional…

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Q: A chemist has been asked to make the chemical shown below. Draw and name the one initial organic…

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Q: What is the molar mass of NaC4H3O? A. 80 g/mol B. 90 g/mol C. 70 g/mol D.100 g/mol

A: To solve this problem we have to calculate the molar mass of given compound.

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Q: Identify the hemiacetal function in lactose and show mechanistically how the stereochemistry at that…

A: The glucose moiety of the lactose disaccharide has the hemiacetal activity. One molecule of glucose…

Q: If the recommended dose for a child is 150 mg of Guaiphenesin. What volume of the cough liquid…

A: Recommendation dose for child of Guaiphenesin  = 150 mgVolume of bottle = 200 mLAmount of…

Q: You have a 5M solution of NaCl. You want 100ml of 0.5M solution. What is the initial volume of 5M…

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Q: Mass of evaporating dish #1 and original sample (9) 39.0119 0.848

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Q: a) b) -C) H₂C d) H₂C H3C CH3 and CH₂ CH3 and CH3 and CH3 CH3 H3C H3C CH 3 CH3 and CH H3C CH3 H3C CH3…

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Q: Based on the experiment described below determine the Michaelis constant of the enzyme involved to…

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Q: isotope of technetium (technetium-99m), has a half-life of 6 hours. A hospital has a sample which…

A: Half life = 6 hoursInitial amount of technetium-99m = 36 mgTime = 12 hours.

Q: a. Use a chemical reaction to explain how aqueous ammonia can create a basic solution. (^- Kb for…

A: Answer:-This question is answered by using the simple concept of basic nature of weak bases using…

Q: Provide the correct IUPAC names for the following compounds and state the function group present: i.…

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Q: Draw the major product of the reaction between 1-butanol and Na₂Cr₂O7, H₂SO4, H₂O.

A: Structure of 1- butanol are :----

Q: a. Naphthalene is a white volatile, solid polycyclic hydrocarbon used in moth balls and repellents.…

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Q: H₂O(g) + Cl₂O(g) = 2HOCI(g) K = 0.0900 @ 298 K The sealed 2.00 L reaction vessel was charged with…

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Q: draw the best lewis structure for the free radical NO2- what is the formal charge on the N?

A: It is essential to remember that Lewis structures are simplified representations used to depict the…

Q: i) H iii) CICI ii) H H CI HOH₂CCH₂CH3

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Q: List the given compounds in order of increasing acidity (lowest first). Give a reason for your…

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Q: Written Response 25. Calculate Ka of a 1.35 mol/L solution of the weak acid, C6H5COOH(aq), if the pH…

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Q: Which of the following terms best describes the pair of compounds shown: CH3 Cl O meso compounds the…

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Q: ) determine the reactions's rate law according

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Q: Based upon the following calibration plot, what appears to be the analytically useful linéar range…

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Q: 1. A student prepares a 100 mL aq containing a small amount of (NH4)2SO4 and a second 100 mL…

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Q: The unknown reaction: A -> P has been measured at the following temperatures: Temp = 298 K Initial…

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Q: The active ingredient of Benadryl© Chesty Forte Cough Liquid is Guaiphenesin an expectorant drug…

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Q: An isotope of technetium (technetium-99m), has a half-life of 6 hours. A hospital has a sample which…

A: half-life(t1/2) of technetium-99m =  6 hours Initial amount [A]0 of  technetium-99m = 36 mgWe need…

Q: Plutonium-238 is used in spacecraft to provide heat to power generators. One of these generators…

A: Initial amount of plutonium -238 = 765 gHalf life = 87.7 yearsTime = 350.0 years

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Q: 2) Look at each of the following sets of structures and determine if they are resonance structures…

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Q: In an aqueous solution of a certain acid the acid is 14.% dissociated and the pH is 2.15. Calculate…

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Q: Consider the graphs for the following reaction at 780K: 2H → H₂(g) +121 [HI] (M) In[HI] 1/[HI] (M³)…

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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.