A 4.04-g sample of methane is burned completely in air. (a) How many moles of H2O are formed? M (b) How many molecules? (c) How many grams?

Q: The following diagrams contain one or more of the compounds: H,A, NaHA, and Na A, where H2A is a…

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Q: Calculate the spin-only magnetic moment for the following atoms and ions. (Remember the rules for…

A: Spin-only magnetic moment can be calculated as follows

Q: Order f

A: Since you have asked multiparts, we will solve the first three subparts for you. If you want any…

Q: What is the theoretical yield of ammonia (in grams) if 16.55 grams of nitrogen gas and 10.15 grams…

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Q: (References) If 0.00864 mol neon gas at a particular temperature and pressure occupies a volume of…

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Q: The stratosphere extends to 50.0 km where P = 0.095 kPa and T = -15.1 °C. What is the mean free path…

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Q: Three 15.0 mL acid samples-0.10 M HA, 0.10 M HB, and 0.10 M H2C-are all titrated with 0.100 M NaOH.…

A: For the titration of wek acid HA, strong acid HB and diprotic acid H2C True statements for the…

Q: What is the hydronium ion concentration in a solution that has a pH of 8.34?

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Q: (References) If water is added to magnesium nitride, ammonia gas is produced when the mixture is…

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Q: 1. Provide a synthesis for the following target molecule. You may use any inorganic molecule or any…

A: Since it is a multiple question ,so I solved first question.   Here we have to snthesize the given…

Q: Identify the main product from the following reaction: I) EtMgBr (1 equivalent) THF,-78 'C product…

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Q: A mixture of three gases, Larry, Curly and Moe is stored in a constant volume container at constant…

A: We have to predict the partial pressure of gas Larry in the mixture .

Q: Given set  A = {all elements that belong to Halogen family}, use roster form to rewrite this set…

A: Roster form description is a form in which a set of elements are listed in a bracket using commas.

Q: Draw the Lewis structure of formaldehyde (H,CO) and then determine if th molecule is polar or…

A: Polar molecules are the molecules having net dipole moment and non polar molecules have zero dipole…

Q: Chemistry Give the products of the reaction of 1 mole of 2-methy1-1,3-pentadiene with 1 mole of…

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Q: Given the data, what pressure would the butane gas sample have at a volume of 135.0ml? Please show…

A: According to Boyle's law, at constant temperature(T) and the number of moles of gas(n), the…

Q: 3.) What would be the boiling point of ethanol at a pressure of 25 atm. The normal boiling point of…

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Q: An activator molecule like DCC is important to create a good leaving group from a -COOH functional…

A: DCC is named as dicyclohexylcarbodiimide. It is used as a coupling agent in most of the organic…

Q: Determine the wavelength of light (in nm) emitted when an electron in the hydrogen atom transitions…

A: Here we are required to find the wavelength of light emitted when an electron in hydrogen atom…

Q: If a certain mass of an ionic solute is added to a solvent such as water, which of the following…

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Q: What mass of CASO4 will precipitate after mixing 50.0 mL of 0.020 M Ca(NO3)2 with 50.0 mL of 0.0080…

A: Ksp of CaSO4 = 7.1 x 10-5 Molarity of Ca(NO3)2 = 0.020 M Volume of Ca(NO3)2 = 50.0 mL Molarity of…

Q: ) if a plot of In(k) v.s 1/T of this pesticide showed a straight line with an equation of the line Y…

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Q: 4. Calculate E°cell and indicate whether the overall reaction shown is spontaneous or…

A: If E°cell  is positive The reaction occurs spontaneously and if it comes negative it become non…

Q: A 20.0 mL sample of 0.150 M ethylamine is titrated with 0.0981 M HCI. What is the pH after the…

A: Given  mmoles of base = 0.15 M x 20 mL = 3 mmoles of acid = 0.0981 M x 5 mL = 0.4905…

Q: he observed nuclear moments of 209 Bi are:   I=9/2; μ = + 4.1 μN; Q=-0.4 x 10-28 m²   Determine…

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Q: se the dropdowns to create a correct and omplete isotope notation. n isotope has 108 neutrons and 74…

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Q: QUESTION 14 Cuáles de los sigulentes enlaces (en el rectángulo) vibra a la frecuencia más alta? H,C-…

A: The correct answer is given below

Q: 1. Balance the ff skeleton reactions and identify the oxidizing and reducing agents: a) O2(g) +…

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Q: If we have more than one substance with a large difference in melting point and we want to prepare a…

A: Different types of the substances with difference in the melting point can be coated on the film and…

Q: Answers true or false to these statements: 1) The freezing point of aqueous 2.5 m CuSO4 is…

A: Here we have to predict the true or false statements .

Q: Sketch energy diagram for a one-step reaction that is fast and highly exergonic.

A: Those reactions in which energy is released  are called exergonic reactions .

Q: What is the percent of sodium in sodium chloride?

A: Percent can be calculated using mass of sodium ( Na) and total mass of sodium chloride ( NaCl ).

Q: Select the gas that would have the highest average molecular speed. Assume all are at the same…

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Q: aqueous hydrochloric acid is reacted with aqueous sodium sulfite

A: The given reaction is a typical case of double displacement reaction where cation and anion of both…

Q: Rank these hydrogens as to acidity. H;C HO. нн A C A most, C least O C most, B least O A most, B…

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Q: Explain the cleaning property of soaps and synthetic detergents based on their emulsifying action.…

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Q: a. Given the following set of values for a gas, calculate the unknown quantity: P = 746.6 mm Hg V =…

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Q: Determine the empirical formula of a compound that has the following mass percents: · 37.0% iron ·…

A: The empirical formula of a compound is the representation of molecule which contains atom with the…

Q: If the absolute entropy for O2 (g) is 126 J/(mole∙K), what is the ΔS for the complete combustion of…

A: C2H4 (g) on complete combustion gives CO2(g) and H2O(g)  We need a balanced equation for the…

Q: In HPLC, fill in the blanks with the choices below: - chromatogram retention time void volume…

A: To fill in the blanks for HPLC:

Q: How does Le Chatelier’s principle impact the examples of equilibrium in daily life shown in the…

A: when we dry clothes, due to breeze, water vapours in near by air are removed or carried away. to…

Q: (a) . Draw and discuss the current vs. potential relationship for the reduction of metal ion in…

A: To reduce migration current  supporting electrolyte is used

Q: b) determine the standard cell potential and if the cell is more or less spontaneous at the non…

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Q: Dilution of Solution Use the correct Significant figures and Solve the following problems…

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Q: Which of the following solutions can act as a buffer? HCI and NACI NaCl and H2O NAOH and HCI NH3 and…

A: Buffer is a mixture of a weak acid and its conjugate base or a weak base and conjugate acid.…

Q: A dioxin-contaminated water source contains 0.066 % dioxin by mass. How much dioxin is present in…

A: To solve this problem we will use the formula  % of dioxin = (mass of dioxin / mass of solution) ×…

Q: What mass of butanol (C4H100) is reacted with oxygen to form 5.37 L of carbon dioxide at a…

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Q: A chemist has a 0.700 M solution of potassium hydroxide (molar mass = 56.1 g/mol). What mass of KOH…

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Q: explain why SHE considered the standard electrode. When does a SHE act as a cathode? An anode?  Is…

A: Answer: Galvanic cell is the type of cell that converts chemical energy into electrical energy via…

Q: A sample of a tin containing ore is dissolved in sulfuric acid. The redox titration reaches the…

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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.