Find out what mass of CaSO3 must have been present initially in order for a  factory to produce 1.39×102 L of SO2 gas at a temperature of 14.2°C and a  pressure of 1.10 atm.  ___CaSO3 (s) → ___CaO (s) + ___SO2 (g)

Q: the percent yield of water.

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Q: You react 85.6 mL of 0.32 M AGNO3 with excess aqueous K2CrO4. What mass of solid precipitate is form...

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Q: The highest building in Montreal is the ‘1 square building’, with a height of 203m. The atmospheric ...

A: Given: Temperature = 298 K Collision cross section (σ)= 0.43 nm2 Pressure =9.9 x 104 Pa. To Calculat...

Q: Match the following enthalpy changes with the reactions below: enthalpy change of combustion, enthal...

A: These reactions are called- 

Q: Write the balanced chemical equation for the reaction of the weak acid HCN with water. Include the p...

A: The reaction of the weak acid HCN with water, The balanced chemical equation is :

Q: Ksp of Calcium Hydroxides Lab According to Le Chatelier’s Principle, does the addition of an acid t...

A: Yes after the addition of an HCl the calcium hydroxide will react with the acid and its concentratio...

Q: ii) Insert the chart of IR spectrum of Ni(DMG)2 160 Precursor 140 120 100 80 60 40 4000 3500 3000 25...

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Q: NO2 Et3N N=C=0 Ph CO,Me Meo,c

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Q: 1. Which of the ff. is NOT true for K? a. It is dimensionless. b. It is independent on temperature. ...

A: 1.) We would check all factors on which K ( equilibrium constant ) depends.    2) we would use relat...

Q: d. dry HCI HOCH,CH,OH

A: Carbonyl compound (aldehyde and ketone) reacts with an alcohol to form hemiacetal in the presence of...

Q: What formula do you use to answer the question, Hydrogen and oxygen undergo a chemical reaction to f...

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Q: Calculate the standard Gibbs energy change for the following reaction at 298 K ...

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Q: rite the net chemical equation fo

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Q: This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE): CH...

A: The chemical formula for methyl tert-butyl ether :-  CH3OC(CH3)3  Moles of C in methyl tert-butyl et...

Q: Assign R or S configuration around the two chiral carbons in the following molecule. - clearly show ...

A: Assign priorities to the groups attached to the chiral centre as per CIP rule(Cahn-Ingold-Prelog)  A...

Q: Consider five solutions that all contain 10 g of solute in 100 mL of solution. Which has the lowest ...

A: The lowest concentration of ions among them is given below

Q: 1.) Given the reaction: PCl3(g) + Cl2(g) ⇌ PCl5(g) Kc = 24.3 Suppose the system at that particular t...

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Q: HF is a weak acid and NH3 is a weak base. Which of the following shows the correct order of increasi...

A: The acid-base nature of the salt solution depends on the nature of the acid and base from which the ...

Q: In an aqueous solution of potassium chloride, the solute is (1) Cl-only (2) KCI (3) K+ only (4) H20

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Q: A chemist determines by measurements that 0.095 moles of bromine liquid participate in a chemical re...

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Q: The equation 96 250Cm-?+ Sr+4n is correctly completed as 96 250Cm→ 14Ce+ 2Sr+4{n. A) True B) False

A: we see the mass number of Cm on the left hand side is 250 and on the right hand side of the equation...

Q: 51.0 g of Y(g) (molar mass = 28.32 g/mol) is placed in a 0.617 L flask for the following reaction to...

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Q: A mixture of krypton and oxygen gas is expanded from a volume of 31.0L to a volume of 95.0 L, while ...

A: Given :- External pressure Pext = 71.0 atm Initial Volume Vi = 31.0 L Final Volume Vf = 95.0 L

Q: A weak acid has a Ka of 2.5×10^-5.  What is the Kb of its conjugate base?  Which is stronger, the ac...

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Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

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Q: Give the oxidation number and coordination of the central metal of the following compounds: a. [Ni(N...

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Q: Ammonia (NH,) chemically reacts with oxygen gas (o,) to produce nitric oxide (NO) and water (H,0). W...

A: Given data is as follows: The mass of ammonia given = 1.2 g The mass of oxygen gas consumed = ?

Q: Is N2O4 molecular or empirical formula

A: Molecular formula : The molecular formula shows exact number of different types of atoms present in ...

Q: Below is an unbalanced molecular equation that describes what happens when solutions of cobalt (II) ...

A: The unbalanced molecular equation is., Co(ClO4)2 (aq)  +  Na3PO4 (aq) →  NaClO4 (aq) +   Co3(PO4)2 (...

Q: Blast furnaces extract pure iron from the iron(III) oxide in iron ore in a two step sequence. In the...

A: First we write both the equation in a manner and after we multiply both the equations in a way to eq...

Q: An atomic absorption method for the determination of the amount of iron present in used jet engine o...

A: The confidence interval CI is given by the following equation., Here, z is the value for the confid...

Q: Use standard reduction potentials to calculate the equilibrium constant for the reaction: 2H+(aq) + ...

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Q: Liquid hexane (CH; (CH,),CH;) reacts with gaseous oxygen gas (02) to produce gaseous carbon dioxide ...

A: Weight of hexane = 20.7 gm Weight of O2 = 67.9 gm  

Q: Many metals react with halogens to give metal halides. For example, iron reacts with chlorine to giv...

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Q: The decomposition of ammonia is zero order process is with a half-life of 28.3 seconds at a certain ...

A: Given, The decomposition of ammonia is zero order reaction. Half Life (t1/2) = 28.3 s Rate constant ...

Q: What volume of 0.5 M NaOH is required to react completely with 25.0 mL of 1.0 M H2CO3? Assume the r...

A: Given, Note: 1000 mL = 1 L Molarity of NaOH solution = 0.5 M = 0.5 mol/L Volume of NaOH solution = ?...

Q: Which elements are considered to be representative elements?

A: Whole periodic table classified into 3 parts:-  Transition elements  Representative elements  Lanth...

Q: empirical formula f

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Q: What mass (in grams) of sodium acetate (MM=0.82 g/mol) is needed to prepare 500 ml of 75 mM acetate ...

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Q: When 2,400 mg zinc is added to hydrochloric acid, 450 mL of hydrogen gas forms at a temperature of 3...

A: To solve this problem we will use the given balanced chemical equation and ideal gas equation .

Q: che age of

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Q: What is the rate law for the given reaction? rate KS208) rate = KS2081 rate = kS2081?

A: Chemical kinetics can be defined as the branch of chemistry that deals with rates of chemical reacti...

Q: Name of Experiment: Spectrophotometry of a two- component mixture: Determination of CO and Ni as EDT...

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Q: Indicate how the concentration of each species in the chemical equation will change to reestablish e...

A: Lechatelier's  principle :-  If a system at equilibrium is subjected to change in temperature , pres...

Q: Identify the oxidizing agent in the following reaction:   8 H+ + IO4- + 8 Ru2+ → 4 H2O + 8 Ru3+ + ...

A: The oxidizing agent in the above reaction is given below

Q: Write the Ka (acid ionization equilibrium constant) expression for the ionization of HC3H5O2 in wate...

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Q: 1.0 x 10-11 moles of HCl are added to 1.OL of H20. What is the pH? О 3.0 O 10.0 O 11.0 О 1.0 O 7.0

A: Moles of HCl = 1.0 × 10-11 moles Volume of water = 1.0 Liter

Q: 25 °C CI + NaCN CN NaBr DMSO CN 25°C + NaCN H2O

A:

Q: 34. Consider the following reaction at 100 °C. N2O4(g) - 2 NO2(g) K = 0.36 A reaction mixture at 100...

A:         N2O4(g)<===> 2NO2(g) , Kc = 0.36 I:       0                     0.100    

Q: is solution is prepared by mixing 25 mL of 0.1 M HCHO2 with 25 mL of .2 M NaCHO2. The pH of the solu...

A: Given values-> Volume of HCHO2 = 25ml Molarity of HCHO2 = 0.1 M Volume of NaCHO2 = 25 ml Molarity...

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.