A 0.610 mole sample of an element has a mass of 86.0 grams. Identify the element and enter its atomic symbol

Q: Which substance is being oxidized in the reaction 2 Mg(s) + 2 MgO(s)? -

A: Given :-  2Mg(s) + O2(g) → 2MgO(s)  To identify :-  Oxidized substance in above reaction

Q: Oxidation: Fe2+ → Fe3+ + e Reduction: Au3+ + 3 e¯ → Au Net: 3 Fe2+ + Au3+ → Au + 3 Fe3+ What is the…

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Q: Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 x 1010 years. What is the…

A: Given-> Half life(t1/2) = 4.7 × 1010 year Initial amount = 108.2 + 4.7 = 112.9 microgram Final…

Q: A solution contains 0.0500 M Ca2+ and 0.0910 M Ag*. If solid Na3PO4 is added to this mixture, which…

A: According to solubility rules, All phosphates are insoluble in water except 1st group cations and…

Q: Which of the following statements about combustion reactions is not true? They can involve certain…

A: Combustion reaction: In this reaction, a compound reacts with atmospheric oxygen to form oxides of…

Q: Whcih among the statement about vapor pressure of a binary system is NOT true? i. Each component of…

A: Dalton's law: Dalton's law of partial pressures states that in a mixture of non-reacting gases, the…

Q: What of the following is the expression for the solubility product of Ba3(AsO4)2?

A: Given-> Ba3(AsO4)2

Q: 10. How many molecular orbitals can be constructed from a diatomic molecule in which s, p, and d…

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Q: * 0∞ Consider the following data on some weak acids and weak bases: K. formula formula name 4. -4 -5…

A: As we know,   Acidic salt(Strong acid-weak base type) has pH less than 7.  Basic salt(Strong…

Q: Phenylacetic acid (C6H5CH2CO2H) is a weak monoprotic acid with Ka = 4.90 × 10−5. What is the pH that…

A: 2.56 g of phenylacetic acid is mixed with 1.59 g of potassium phenylacetate and the solution is…

Q: • Part A The half-life for the radioactive decay of U - 238 is 4.5 billion years and is independent…

A: By using half-life, first calculate rate constant for radioactive decay and then find out number of…

Q: An atom with the element symbol Sm has 62 protons in its nucleus. For the 62nd electron, determine…

A: For Samarium (Sm) atomic number is 62 as it has 62 protons. Now to find the angular momentum of 62th…

Q: The overall charge on the polyatomic "dichromate" ion (Cr207) is -2. What is the oxidation number of…

A: Given: The overall charge on the dichromate ion i.e. Cr2O72- is -2.

Q: There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of…

A: Combustion is exothermic process...

Q: When working with very low concentrations, such as 0.000245 M, it can be more convenient to…

A: Molarity: It is the number of moles of solute present per Litre of the solution. The units of…

Q: Aldehydes and ketones are O A. polar molecules capable of forming hydrogen bond among themselves. B.…

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Q: Use this condensed chemica structure to complete the table below. I| CH, C 0 C CH, The condensed…

A: Given, The condest chemical structure of acetic anhydride: Number of carbon-carbon single (C-C)…

Q: The solubility product Ksp for Ag3PO4 is 3.3 x 10^-18. What is the solubility of silver phosphate in…

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Q: Given the following reaction: A (g) + 2B (g) + heat 2D (g) 2C (g) + Considering Le Châtelier's…

A: Le Chatelier's principle: According to the Le Chatelier's principle when a change in concentration…

Q: Label each as either an element or compound. Ni NO2 HI

A: 1. Ni - This is an element of d-block with atomic number 28 in periodic table. 2. NO2 -This is a…

Q: The dissociation constant of ammonia is 1.8 x 10 -5. At 0.112 M solution concentration, find the…

A: Given,  The molarity of ammonia solution = 0.112 M.  The dissociation constant = 1.8 × 10-5

Q: Nitrogen molecules (N2) are moving all around you right now at room temperature (~300 K). Take the…

A: We have find out a)  effective cross-sectional area of a nitrogen molecule b)  the number density of…

Q: Part A The following data show the rate constant of a reaction measured at several different…

A: The data given is,

Q: Predict what will be observed in each experiment below. experiment predicted observation (choose…

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Q: What is the heat of combustion of gasoline if 4.00g of gasoline are burned in a calorimeter to raise…

A: As gasoline is combusted to heat water , so we would first calculate amount of heat required to heat…

Q: 3. What volume of a 0.470M HCI reacted with enough Zn metal to produce 1.50 g ZnC12 based on the…

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Q: What is the relationship between wavelength and frequency?   As wavelength increases frequency…

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Q: What is the enthalpy for the two reactions? Reaction 1: 30mL Citrus acid 10.23 g Baking soda Initial…

A: NOTE: Since the concentration of both the acids HCl and citric acid are not given. Hence I'm…

Q: Suppose a certain atom has two available states that are separated in energy by 1.97 eV. Given a…

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Q: The following chemical reaction takes place in aqueous solution: Cu(NO,) (aq)+K,S(aq) →CUS(s)+2…

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Q: How many moles of sodium acetate should be added to 0.40 mol CH3COOH to make a solution buffering at…

A: Given- Moles of CH3COOH = 0.40 mol pH = 4.46 pKa = 4.76

Q: muclide decay mode daughter nuclide 10 Be beta emission 147 143 No (choose 14 beta emission

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Q: X represents a nonmetal atom with an atomic mass of 107.91 amu.  Calculate the number of grams of…

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Q: H. H H. H;CO E

A: ->HCN give nucleophilic addition reaction to carbonyl center.Hence, the carbonyl center which has…

Q: A solution contains 6.92×10-3 M chromium(III) nitrate and 9.31×10-3 M aluminum acetate. Solid sodium…

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Q: Table 6b. Sucrose Concentration 0 0.1 0.20.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 (Molarity) 5.00 5.00 5.00…

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

Q: B. The incomplete combustion of octane (C8H18), a component of gasoline, produces carbon monoxide…

A: Here we have to write the incomplete combustion of octane to produce carbon monoxide and water vapor…

Q: which transformation is produce strong base In clonixin. Select and explain!

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Q: What is the heat of combustion of gasoline if 4.00 gof gasoline are burned in a calorimeter to raise…

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Q: /1. The acid dissociation constant for HBRO is 2.8 x 109. Calculate the equilibrium concentrati- all…

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Q: An atom with the element symbol Sm has 62 protons in its nucleus. For the 62nd electron, determine…

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Q: Frange the following compounds in order of increasing boiling point. Clear All CH3CH2CH2C-OH Lowest…

A: ->Carboxylic acid can form hydrogen bonds hene, there boiling point is maximum. ->Alkanes has…

Q: Phosphorus (P4) and oxygen react to produce diphosphorus pentoxide.   How many grams of diphosphorus…

A: Given - Weight of phosphorus = 135.87 gm Weight of oxygen = 154.28 gm

Q: for each of the 2 centres, label them S or R

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Q: Calculate the molar solubility of AgI in 2.8 M NH3. The overall formation constant for Ag (NH3)2+ is…

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Q: 4. Write the product and give mechanism. *CO Et (ii) -CH3 RCN/.. \PMe3 Rh Me,P

A: We have chemical reaction of organometallic chemistry.

Q: Which answer applies to the following statement? Some alkene addition reactions involve a concerted…

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Q: last three compounds. Compound à Aromatic/Anti-aromatic/ Non-aromatic fptanar :O: NH

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your…

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Q: Use the References to access important values if needed for this question. 1. How many ATOMS of…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

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.