What is the empirical formula for an unknown organic compound, if the compound contains 75% carbon and 25% hydrogen by mass? O CH4 O CoH25 O C9F81 O CAH

Q: O 20 mol D Question 3 Given the following reaction: A+ 3B --> 2 C Calculate how many grams of C are ...

A: Given data : Mass of A = 9 g Molar mass of A = 18 g/mol Molar mass of C = 100 g/mol

Q: Determine the heat associated when 50.0 grams of steam are converted to liquid at 100.0 degrees celc...

A: Given, Mass of steam = 50 grams 

Q: Given the following proposed mechanism, predict the rate law for the overall reaction: 2 NO2 + Cl2 →...

A: Elementary reactions are those which occur in one step and in case of elementary reaction the order ...

Q: For the following reaction, 6.63 grams of nitrogen gas are mixed with excess oxygen gas . The reacti...

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Q: The molar conductivity at infinite dilution of hydrochloric acid, sodium benzoate, & sodium chloride...

A: Given :  Molar conductivity of hydrochloric acid = 426.2 Scm2mol-1 Molar conductivity of sodium benz...

Q: Given the following reaction: A+ 3B --> 2 C Calculate how many grams of C are produced from of 16 g ...

A: The balanced equation is given and the number of moles of reactant can be calculated using given mas...

Q: Question 9) The following reaction: 4NH3 + 502 → NO + 6H20 If the rate of consumption of ammonia is ...

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Q: What is the true density of Zr, an HCP crystal, in g/cm3? Atomic Number = 40  Atomic Weight = 91.22 ...

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Q: How many moles of carbon in 70.43 grams of C6X12Y4? (Assume the molar mass of C6X12Y4 is 295.8)

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

Q: Given the pair of reactions shown below, where all species are aqueous, with their equilibrium const...

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Q: 3-azaspiro[5.5]undeca-1,3,7.9-tetr. Chemical Formula: C10H11N

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Q: Calculate the density of [110] of W

A: The plane given is (110)  Now, since Tungsten is given, it crystallizes in BCC lattice.

Q: tion 20 Place the following substances in an INCREASING order based on the expected pH of an aqueous...

A: pH of any aqueous solution can be explicate as the concentration of hydrogen ions that are present i...

Q: What causes battery-powered electronics to perform poorly in low temperatures? A) Corrosion B) Chemi...

A: In battery-powered electronics, batteries are used as a source of energy in which the chemical energ...

Q: If one fluidounce of a cough syrup contains 10 gr of sodium citrate, how many milligrams are contain...

A: Thus, 5 mL solution contains 1.6907 g of sodium citrate.

Q: Classify each of these exchange reactions as an acid-base reaction, a precipitation reaction, or a g...

A: Given incomplete chemical equations are : (a). MnCl2 (aq) + Na2S (aq) ------>  (b). Na2CO3 (aq) +...

Q: For the following reaction, 24.7 grams of carbon disulfide are allowed to react with 95.8 grams of c...

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Q: Write a mutlistep synthesis for the reaction below CH3 H.

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Q: Which of the following statements concerning the determination of crystal structure by x-ray diffrac...

A: X-ray crystallography is  branch of chemistry in which we determining the atomic and molecular struc...

Q: I. Determine the molecular geometry of the encircled atom in the following organic molecules by givi...

A: Lewis structure of the atom in a molecule includes bonded electron pairs and non-bonded electron pai...

Q: A reaction is found to be second order with a rate constant of 3.45×10^-5 M^-1s^-1. The reaction beg...

A: Given that, Order of reaction = 2nd order  Rate constant k = 3.45 × 10-5 M-1 s-1 At, t= 0 second, [A...

Q: bleach

A: In this question we have to explain that the difference between a bleach safe for white clothes and ...

Q: How many molecules are in 6.26 grams of sulfur dioxide? ______ molecules What is the mass in grams...

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Q: For a given pure metal which of the following cubic unit cells would result in the highest metal den...

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Q: 6If the ratc constant for this second-order reaction is 8.0x 10-8 L mol' s, what is the half-Life fo...

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Q: When writing the Kc expression for the equilibrium below, which of the following terms (with proper ...

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Q: What is the Miller index in the lattice direction that may be placed on the lattice plane (112) amon...

A: Miller index for plane (112) Is (111/2).

Q: H2 (g) + 12 (g) 2 HI (g) Initially, 3.7 atm each of hydrogen gas and iodine gas are added to a steel...

A: at equilibrium  the value of HI is given from this we can calculate the value of  x or change. so fu...

Q: What best methods/techniques would you prefer more for caffeine extraction? Why?

A: Caffeine is water soluble but there are some tannins and gallic acid which is formed in the process ...

Q: Conclude aspirin synthesis in past tense

A: Aspirin can be synthesized as follows 

Q: Which is the reductant and oxidant in the reaction?  2 KMnO4 + 5 C6H8O6 + 3 H2SO4 → 2 MnSO4 + K2SO4...

A: Which is the reductant and oxidant in the reaction? 

Q: Write the equiliprium constant expression in terms of K, for the reaction: CS, (g) + 4 H, (g) = CH, ...

A: There is a reversible reaction given in the question. We are asked to write the equilibrium constant...

Q: Draw a graph of the expected relationship between hydrogen isotope ratio in summer and rooting depth...

A: Given:-   Draw a graph of the expected relationship between hydrogen isotopes ratio in summer and ro...

Q: Calcium crystallizes in a face-centered cubic lattice. The radius of calcium is 196 pm. What is the ...

A: Ca crystallizes in FCC lattice.The radius of Ca is 196 pm.We have to calculate the edge length of th...

Q: A sample of vinegar has a hydronium ion concentration of 5.7 x 10¬ 3 M. What is the pH of this vineg...

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Q: 4. A satellite flying by Jupiter takes a picture of the Great Red Spot. How long does it take the im...

A: Given : Distance = 892 million km   

Q: Calculate the value of AH for the reaction: 3 Fe (s) + 4 H20 (g) Fe304 (s) + 4 H2 (g) Fe (s) + H20 (...

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Q: A sample of feldspar weighing 1.500g is decomposed, and eventually there is obtained a mixture of KC...

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Q: When a chemical system is at equilibrium, OA. the reaction quotient, Q, has reached a maximum. O B. ...

A: Choose the correct option for the given option-

Q: The equilibrium constant Kp for the thermal decomposition of NO2 is 6.50 x 10-6 at 450 "C: 2 NO2(9) ...

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Q: The force constant katr of a backbone Ca – -C bond in a peptide is 250.0 kcal/mol/Angstrom² and the ...

A: Given: Force constant (kstr) of bond = 250 Kcal/mol/Angstrom2  Equilibrium bond distance (r0) = 1.49...

Q: Order the following sets of five atoms and ions according to increasing size: ("1" smallest and "5"...

A: The given anions and cations are - - >  F- , H- , Be2+ , Li+  , Cl-   When an atom looses its ele...

Q: D. Mass Spectrum 120 55 100 80 60 28 84 41 40 56 27 39 20 42 26 37 38 36 40 43 48 49 50 51 s, 53 54 ...

A: Mass spectrum is the technique used in analytical chemistry for the separation of ions based on the ...

Q: Given the following reaction: A+ 3B --> 2 C Calculate how many grams of A are needed to form 10g of ...

A: The balanced reaction involved is A + 3B -----> 2C Mass of C formed = 10 g   It is required to ca...

Q: Cag(PO4)2 (s)=3Ca2* (aq) + 2PO43- (aq) If, at equilibrium, a beaker contains 1.00 L of solution with...

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Q: uncertainty to your measurement of the concentration

A: In this question we have to explain that how we can use error lines from graph to assign an uncertai...

Q: Choose among the choices (an) example/s of (an) amphiprotic species. a.    HCl b.    Glycine zwitter...

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Q: Suppose a 500. mL flask is filled with 0.80 mol of H, and 0.90 mol of HI. The following reaction bec...

A: Given data :  Initial moles of H2 = 0.80 mol IInitial moles of HI = 0.90 mol Equilibrium constant (K...

Q: Calculate Ke. for the reaction A (aq) + B (aq) 2C (aq) if at equilibrium [A] = 0.62 M, [B] = 0.53 M,...

A: The Keq of the above reaction can be calculated as follows 

Q: 40 2) In each case, tell whether cis and label them as cis and trans. a) 2- butene 5) 2- methylprope...

A: Cis-Trans: When the substituent groups are oriented in the same direction, the diastereomer is refer...

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.