How many moles of an ideal gas are there if the volume of the is 158 L at 14°C and a pressure of 89 kPa? gas

Q: Circle the most stable conformer 3) Draw the two chair conformations for the compound shown below Cl...

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Q: Direction: Draw the dipole moment vector for each molecules and identify whether the molecules are p...

A: We have to tell whether the given molecules are polar or non polar.

Q: A sample of helium gas at a pressure of 786 mm Hg and a temperature of 26 °C, occupies a volume of 6...

A: Given :-  Initial temperature (T1) = 26°C  Initial volume (V1) = 6.59 L  Final temperature (T2) = -6...

Q: Calculate the percent composition by mass of each element (Pb, C, O) in lead(II) carbonate.

A: Complete solution is given below in next step

Q: Rank the following molecules from weakest to strongest in terms of the intermolecular forces it can ...

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Q: Either the reactant (X) or the major organic product is missing from the equation below. Draw the mi...

A: Alkenes are hydrogenated by the reaction with hydrogen in presence of a nickel, platinum, or palladi...

Q: If a system has 5.00 x 102 kcal of work done to it, and releases 5.00 x 102 kJ of heat into its surr...

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Q: Exactly 1.00 grams of granular table salt was dissolved in deionized water up to 500 mL. An aliquot ...

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Q: A solution made with 0.140 moles of phosporic acid (H3PO4), dissolved in 194 mL of solution, was tit...

A: Moles of H3PO4 = 0.14 Volume of solution of H3PO4 = 194ml = V2 Concentration of NaOH = M1 = 1.320M V...

Q: NaOH (NH,),S

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Q: A compound containing 5.9265 % H and 94.0735 % O has a molar mass of 34.01468 g/mol. Determine the e...

A: Rule for this is just to determine the no of each atom present

Q: For each system listed in the first column of the table below, decide (if possible) whether the chan...

A: Entropy is basically the measure of randomness. In solids constituent particles are well arranged an...

Q: Кы(еxperiment)

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Q: QUESTION 5 If 4.879 moles of aqueous hydrochloric acid reacts with 1.007 moles of calcium hydroxide,...

A: Calcium hydroxide reacts with hydrochloric acid to form calcium chloride and water. The equation for...

Q: For the buffer system in Problem no. 1, what will be the pH when (a) 15.0 ml of 0.500 M HCl and (b) ...

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Q: 2. How many grams of H2 are needed to react with 9 g N2? Cota Imde

A: Given - Gram of nitrogen = 9 gram To Calculate - gram of H2 are needed to react with 9 gram of N2. R...

Q: Lalisa and Labmi were tasked to design a new and efficient method of producing black inks. To determ...

A: Retardation or retention factor (Rf) value is the ratio of distance traveled by the analyte to that ...

Q: Two propagation steps are given. Select the appropriate curved arrows for bond making or breaking by...

A: The appropriate curved arrows for the above propagation step is given to

Q: The temperature of pure water at equilibrium vapor pressure of 36.2 torr is 45°C. When 30.4 g of a n...

A: Given vapour pressure of pure water and mixture.

Q: Calculate the number of moles of gas with the following conditions. A unknown gas as a pressure of 8...

A: Given  Pressure (P) = 8.13 atm Temperature (T) = 69 oC = (69 + 273)K = 342 K Volume (V) = 19.20 L Nu...

Q: How many grams of Nitrogen gas (N,) will be contained in a 3.0 liter flask at STP? * O 0.13 grams 3....

A: Option B is correct answer. 3.64 grams.

Q: What does STP stand for in chemistry? What are the values for each letter? Explain why STP is import...

A:   Characteristics of gas:  Compressibility Expansibility Diffusion Pressure   Variables of gas:  S...

Q: Calculate the pressure exerted by CO2 in a cola bottle if its molar solubility in the solution is 1....

A: Henry law: This law states that the concentration of a gas dissolved in a liquid depends on the part...

Q: Write out the molecular, ionic, and net ionic equations for the neutralization reaction between sulf...

A: KOH(aq) + H2SO4(aq)

Q: What is the equivalent weight of CdI2 used to precipitate out CdS? CdI2 has a formula weight of 366....

A: Equivalent weight of a substance can be defined as the mass of one equivalent of that substance in g...

Q: Write the net ionic equation for the acid-base reaction. Include physical states. HCIO,(aq)+NaOH(aq)...

A: We have to predict the net ionic equation .  

Q: How many pounds will 1 cubic foot of cork weigh if one cubic centimeters weighs 0.25 grams?

A: Given, Note: 1 cubic foot = 1 ft3 1 cubic centimetre = 1 cm3  

Q: Question 7 The cell notation for the Galvanic cell is A(s)/A²*/B2(s)/B¯ The Standard Reduction Poten...

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Q: A metal object with mass of 21.7 g is heated to 97.0 °C and then transferred to an insulated contain...

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Q: For each system listed in the first column of the table below, decide (if possible) whether the chan...

A: Entropy increases when liquid or gaseous molecules get more space to move. 

Q: 250ml of 0,05M Na-phosphate buffer from 0,2M Na-Phosphate buffer by dilution. COMPLETE it using the ...

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Q: Experimental Data Table: Initial [IO3¯ ag] (mol/L) Initial [H* Initial [I (ag)] (mol/L) Trial Run Ti...

A: The iodine clock reaction is given by: IO3(aq)−+5I−(aq)+6H+(aq)  → 3I2(aq)+3H2O(l)  

Q: 2Examine the following reactions, what needs to be changed tb make the product ORGANIC pY oduct show...

A: Ketone on treatment with alcohol in the presence of an acid catalyst produces hemi ketal. When carbo...

Q: Rank the following molecules from weakest to strongest in terms of the intermolecular forces it can ...

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Q: What is the pH of an aqueous solution of 2.09x10-2M barium hydroxide? pH %3D

A: [Ba(OH)2] = 2.09 x 10-2 M  

Q: Which direction would the equilibrium shift if heat is added to the reaction? Co2 cobalt(ii) sulfate...

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Q: For each system listed in the first column of the table below, decide (if possible) whether the chan...

A: Ammonium iodide, NH4Br ionizes in aqueous solution as below. NH4Br (s) --------> NH4Br (aq) -----...

Q: 50.00 mL of a solution containing 0.15 M CH2 (CO2 H)2 and 0.020 M MnSO4·H2O Calculate the mass of m...

A: Mass of manganous sulfate monohydrate will be calculated from its number of moles. 

Q: 4. Propose an efficient synthesis of 2-cyano-1-cyclopentanol from cyclopentene.

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Q: DO IT LIKE THE GIVEN EXAMPLE EXAMPLE 1) CuBr2 Molar Mass = 1(Cu)+2(Br) Cu: _28.45% 1(63.546) + 2(79....

A: Molecular mass of the compound is equal to the sum of the atomic masses of constituent elements in t...

Q: Question 9 . Which of the following statement/s islare TRUE? I. Electrochemistry deals with the phys...

A: There are several terms, we have to check which are true.

Q: Submit A system expands from a volume of 1.00L to 2.00 L against a constant external pressure of 1.0...

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Q: Which is the reductant and oxidant in the reaction? 2 KMNO4 + 5 C6H8O6 + 3 H2SO4 – 2 MnS04 + K2SO4 +...

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Q: The prevailing atmospheric pressure on a plateau in Colorado is 0.786 atm. Express this pressure in ...

A: Given :- pressure = 0.786 atm  To calculate :- given pressure in ;  psi  KPa  Pa  mm Hg  in Hg

Q: Draw a structural formula for the intermediate in the following reaction: CH2Cl2 CH3CH=CHCH3 Br2 • Y...

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Q: 3. What types of aldehydes and ketones would you expect to be water-soluble? 4. What results are exp...

A: In question 4, the complete  information is not there .So, except that I am solving all the other th...

Q: Preparation of HCl solution a. Measure 20.7 ml of concentrated Hcl (37% wt HCI) using the pipet and ...

A: Solution - It is mixture of solute  and solvent. 

Q: A compound containing 5.9265 % H and 94.0735 % O has a molar mass of 34.01468 g/mol. Determine the e...

A: Given that a compound contains 5.9625% H and 94.0735% O 

Q: Brad tries out a weight-loss plan that involves repeatedly lifting a 41.4-kg barbell from the floor ...

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Q: How would you prepare the following substances by precipitation? a. PbSO4 b. FeS c. CoCO3 d. Al(...

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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.