Determine the molar mass of the compound if it is between 250.0 and 350.0 g/mol.

Q: Design a buffer that has a pH of 7.36 using one of the weak base/conjugate acid systems shown below....

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Q: Molarity a) Calculate the mass of KI in grams required to prepare 500 mL of a 2.80 M solution. 7. b)...

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Q: Sodium formate reacts with permanganate in neutral solution according to the equation CHO2 + MnO4 +...

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Q: What is the experimental molar mass (that is, calculated from the data given and not taken from the ...

A: Given: Mass of Mg reacting = 0.0228 g. Volume of H2 produced = 22.57 mL = 0.02257 L                 ...

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Q: Which molecular shapes are always polar, regardless of the atoms in the molecule? (Hint: there are 5...

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Q: A chemist needs 32.0 g of phenol, C6H5OH, for an experiment. How many moles of phenol is this?   E...

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A: Greenhouse gases are the gases that cause greenhouse effect by absorbing infrared radiation which wa...

Q: Mass =

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Q: 3. A 100 mL sample of hard water is titrated with 22.4 mL of the EDTA solution from problem 2. The s...

A: Its given as

Q: Na,CO3(aq) + CaCl2(aq) → 2 NaCI(aq) + CaCO3(s)

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Q: A chemistry graduate student is given 450. mL of a 1.20M ammonia (NH,) solution. Ammonia is a weak b...

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Q: Calculate the pH of a 0.170 M solution of potassium nitrite, KNO₂. pH =

A: Given that, [KNO2] = 0.170 M =C (LET)  pH = ? 

Q: How much heat is required to convert 18.0 g of ice at -10.0°C to steam at 100.0°C? Express  your ans...

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Q: The number of grams of Na2CO3 with a concentration of 0.2 N and a volume of 250 ml is O 1.75 O None ...

A: Given, Normality of the solution = 0.2 N = 0.2 eq/L Volume of the solution = 250 mL = 0.250 L Mass (...

Q: Which reaction represents this energy diagram? (8F0-(8)H7 AH --486.3 kJ 21,0(g) O 486.3kJ + 2H2O(g) ...

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Q: When 0.0916 g P406 were mixed with 0.113 g H20, a student obtained 0.121 g H3PO3. What was the perce...

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Q: Cyelopenta diene trans va dimethosy etham Can anyone show me what a Diels-Alder reaction would look ...

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Q: pH =

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Q: Na,CO3(aq) + CaCl,(aq) → 2 NaCl(aq) + CaCO3(s) Calculate the volume (in mL) of 0.200 M Na»CO3 needed...

A: Given, mass of CaCO3 = 2.00 g molar mass of CaCO3 = 100.09 g/mol => moles of CaCO3 = mass of CaCO...

Q: You put a pot of water on the stove and the water begins to boil. What is the system? What is the su...

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Q: What is the maximum mass of pure titanium that could be extracted from 3.0 kg of ilmenite, a titaniu...

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Q: If a 6.7892 g sample of Chips is burnt and releases enough heat to raise the temperature of 96.6782 ...

A: Given: Mass of water = 96.6782 g. Initial temperature of water = 26.4 oC And the final temperature o...

Q: Determine the molar solubility (S) of Ag, CO, in a buffered solution with a pH of 3.289 using the sy...

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Q: Combine the following half-reactions to obtain a balanced overall redox reaction.  Cu2++2e−→Cu   an...

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Q: What is the mass of 5 ul distilled water?

A: Since you have posted multiple questions, as per our company guidelines we are supposed to answer on...

Q: 1) Listen Which is a high-energy, short-lived intermediate that forms during the conversn of reactan...

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Q: On any paper, complete the table: IUPAC Names for the Continuous Chain Alkanes and It's S...

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Q: commo n nemes - CH3- @ cH3-cHz-0 cHz-cHz- cooH

A: The naming of ethers are done as, first the smaller group is named as alkoxy.   1.methoxyethane 2. ...

Q: what is the change in the enthalpy in kj/kg for the complete combustion of 39.0 g of fructose, rough...

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Q: Calculate the molar solubility of aluminum hydroxide in a solution buffered at pH = 4.50. Al(OH)3 (...

A: Consider the given information is as follows; pH = 4.50Ksp = 1.3×10-33       

Q: During nitration of chlorobenzene, the sigma complex formed from meta attack will have additional st...

A: During migration, +M groups form ortho and para products. 

Q: 19. Which complex has the greatest number of unpaired electrons? A. [CuCla]²- B. [CrF6]3- C. [Mn(CN)...

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Q: If 3.25 liters of ammonia react with an excess of oxygen at 500. °C and 5.00 atm pressure, what volu...

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Q: Barium hydroxide is considered a strong electrolyte. How many moles of OH are in a 1277mL sample of ...

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Q: Which never changes the position of a system at equilibrium? O Changing the concentration of one com...

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Q: Classify the type of intermolecular forces of attraction exhibited by each of the following substanc...

A: The intermolecular forces are the forces of attraction between atoms, molecules, or ions when they a...

Q: What is the solubility-product expression for La(IO3)3 (s)?     A. Ksp = [La3+] [IO3-]1/3 B. Ksp = ...

A: To determine the solubility-product expression for La(IO3)3(s) .Solubility equilibrium is a type of ...

Q: mole fraction

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Q: A student conducted an experiment where water was pipetted into a graduated cylinder and then weighe...

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Q: Provide the answers to the following questions. Show all of your work with correct units throughout ...

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Q: H,C „CH3 H,SO,, H,0 CH3 The two major products are a) enantiomers b) diastereomers c) the same molec...

A: Hydration of double bond occurs via carbocation intermediate formation. Most stable intermediate giv...

Q: Write the mass balance equations and charge balance equations for 0.20 M Ba(OH)2. Note that Ba(OH)2 ...

A: Here we have to write mass balance and charge balance equation for 0.2 M Ba(OH)2 aqueous solution.

Q: Given the following results: Run Rate of Reaction (M/s) [I-] [H2O2] 1 1.99 0.516 0.561 2 3.15...

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Q: Previous Answers A solid mixture consists of 25.5 g of KNO, (potassium nitrate) and 4.5 g of K,SO, (...

A: Initially we have taken 25.5 g of solid KNO3 in which we dissolve them and we then check the gram to...

Q: A 42.9 ml sample of a 0.373 M aqueous hydrofluoric acid solution is titrated with a 0.404 M aqueous ...

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Q: U. mmo n AA reaction between nitric acid and calcium E 6. Write and balance each equation. Determine...

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Q: An excess of 0.34 mg Pb is obtained from an assay test determined in an analysis. What is the percen...

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Q: If qsolution -10 kJ for the following reaction conducted in a coffee cup calorimeter, what is qreact...

A: Please find the below attachments.

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.