Consider the mass of Sulfur and Fluorine in compound A (16.6 g S, 9.80 g F) and compound B (23.2 g S, 55.0 g F).  How do numbers like these support atomic theory?

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Q: Chemistry The glucose assay reagent contains NAD (0.5 mM) and ATP (0.7 mM) in TEA buffer. If you…

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Q: How many grams of sucrose (C12H22O11) are needed to lower the freezing point of 123 g of water by…

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Q: Name : R NH2 Select one: a. alcohols b. amine c. phenols d. aldehyde

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Q: provide the name of the element that corresponds to each of the following symbols. Cu! Rb! b Rn 1…

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Q: Draw the structures of the free radicals in the compound, then arrange them in a decreasing order of…

A: A free radical can be defined as an atom or molecule containing one or more unpaired electrons in…

Q: How many grams of glucose (molar mass = 180.16 g mol-¹) must be dissolved in 208 g of water to raise…

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Q: NH3 is a weak base (?b=1.8×10−5) and so the salt NH4Cl acts as a weak acid. What is the pH of a…

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Q: If 25.6 J of energy raised 786 g of a substance from 20.0o C to 35.0o C, what is the specific heat…

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Q: Gaseous butane (CH₂(CH₂)₂CH₂) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide…

A: Given - Weight of butane =33.7 gram Weight of oxygen =90.0g

Q: Find: Ea of forward reaction & Ea of backward reaction

A: The given reaction is exothermic because change in enthalpy of reaction is negative. So, Ea for…

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Q: For a particular reaction at 158.7 °C, AG= -332.73 kJ/mol, and AS = 436.17 J/(mol-K). Calculate AG…

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Q: 1. How many liters are required to make 0.2M solution if 54g Na₂SO4 is used? Na = 23g; S = 32g;…

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Q: You can convert molarity to molality if you know thedensity of the solvent. Thedenominator must…

A: Molarity : It is defined as the number of moles of solute per liter of solution. Molality : It is…

Q: You know for sure that the compound named decane has Select one: a. 10 carbon atoms in each…

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Q: 1.What is the pH of 0.400 M ammonia soln? (Kb = 1.8 x 10-5) (Round-off your answer to two decimal…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What is the concentration of OH" ions in a HCI solution whose hydrogen ion concentration is 1.3M?

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Q: 15.2mL of 0.425M NaOH solution is required to neutralize 25.0mL of H2SO4.  Determine the…

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Q: A polymer that contains two or more different monomers is called O copolymer homopolymer…

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Q: Use the combined gas law to solve the following problems: 8) If I initially have a gas at a pressure…

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Q: A. What will the average value of energy that anthracite coal can give for values of H = 0.2%, 0 =…

A: Anthracite is the purest form of coal .It is also known as hard coal or black coal.It has highest…

Q: A 0.206 g piece of solid magnesium reacts with gaseous oxygen from the atmosphere to form solid…

A: Answer: Oxidation reaction of Mg is shown below: 2Mg(s)+O2(g)→2MgO(s)

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A: 0.6003 g of impure Na2O sample is treated with HCl and 58.5 mg of NaCl is obtained .We have to…

Q: Outline the difference between non associate and associated gas and thank you | DYBALA

A: In this question, we have to write the difference between associated gas and non- associated gas.

Q: 7. What volume of a 0.8 M glucose solution can be made from 50 mL of a 2M stock solution?

A: As on dilution , moles of solute remains constant but volume of solution increases.  Therefore,…

Q: Take the reaction: NH3 + O2 → NO + H2O. In an experiment, 3.25 g of NH3 are allowed to react with…

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Q: Write the mechanism to predict the products of each of these reactions. A)…

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Q: A mixture containing only BaO (153.3264) and CaO (56.0774) weighs 3.00 g. The oxides are converted…

A: According to the question we have, The molar mass of the BaO = 153.3264  The molar mass of the CaO =…

Q: Examine the ungraded ball-and-stick model to determine the three-dimensional structure of the…

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Q: A + 2B -> C (rate constant = k1, rA = -k1[A][B]2) C -> A + 2B (rate constant = k-1, rA = k-1[C])…

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Q: how is it similar?

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Q: was the mass of O2 0.1691mole

A: In this question, we have to clear the doubt regarding the preceding question.

Q: 1. What volume of oxygen, measured at 45°C and 782 mm Hg, is required to "burn" 5.12 grams of…

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Q: After transfering the completely dissolved NaOH to the volumetric flask from the beaker, the beaker…

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Q: Why is better separation of two liquids achieved by slow rather than fast distillation?

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Q: Write the product of this reaction: SO3 H₂SO4 НО, CH₂CH3 What is the name of your product?

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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.