The chemical formulas of the compounds are given: NaCl, N, O, K, Cr, O, KMnO a) Calculate their molar masses

Q: The mineral hausmannite, Mn3O4, which contains both manganese(II) and manganese(III) ions, is formed…

A: Given,  3 MnO2(l) → Mn3O4(s) + O2(g) (at 890°C) The mass of MnO2 reacted = 36.02 Mg.  The produced…

Q: The action of dilute nitric acid on copper is represented by the equation: Cu + HNO9->…

A: Given-> Weight of HNO3 = 250.0 gm Cu(s) + HNO3-----> Cu(NO3)2 + H2O + NO

Q: CH12 + Oz→ CO, 4 H,0 Atomic masses: C = 12.01, H=1.01, O=16.00, N=14.01 The chemical equation is not…

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Q: How many formula units are in 35.4 g of NaCl? Calculate the mass of 2.50 mol of Fe(OH),. What is the…

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Q: Write the equation for this reaction, then balance the equation. b.Calculate the grams of lead (II)…

A: Mole concept.

Q: Mesitylene is a liquid hydrocarbon. Burning 0.582 g of the compound in oxygen gives 1.92 g of CO2…

A: We have to predict the empirical formula for mesitylene.

Q: A- Balance The Equation NO2(g) + H2O(1) – HNO3(1) + NO(g) B- What is formula - -- -- mass of K2Cr207…

A: (A) We balanced a chemical reaction, due to stisfy the law of conservation of mass, which states…

Q: For the reaction: CuSO4 + NH4OH , [Cu(NH3)6]SO4 + HOH, how many grams of [Cu(NH3)6]SO4 can be…

A: Balance reaction: CuSO4 + 6 NH4OH ——> [Cu(NH3)6]SO4 + 6H2O

Q: we heat the sample FeCl3 6H2O and the following reaction takes place, FeCl 6H2O FeCl3 + 6H2O based…

A: Given, FeCl3.6H2O Heat ➝ FeCl3 + 6H2O Before heating mass of FeCl3.6H2O hydrate compound = 3.50 g…

Q: A- Balance The Equation NO2(g) + H2O(1) -- HNO3(1) + NO(g) B- What is formula mass of K2Cr207…

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Q: Given the equation 3A + B C + D, you react 2 moles of A with 1 mole of B. Which of the following is…

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Q: 4-8. Find the number of K+ ions in 3.41 mol of K₂HPO4?

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

Q: a. What isthe percent by mass of water in iron (II) sulfate heptahydrate, FeSO4 • 7H2O  (or what…

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Q: Uranium is used as a fuel, primarily in the form of uranium(IV) oxide, in nuclear power plants. A…

A: To solve this problem first we have to calculate the mass of oxygen combined , then we will…

Q: A- Balance The Equation NO2(g) + H2O(I) -- HNO3(1) + NO(g) B- What is formula -- --- mass of K2Cr207…

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

Q: A- Balance The Equation NO2(g) + H2O(1) ------- HNO3(1) + NO(g) B- What is formula mass of K2CR2O7…

A: Balancing chemical equation, Molar mass and Empirical formula.

Q: Dimethylnitrosamine, (CH3)2N2O , is a carcinogenic (cancer-causing) substance that may be formed in…

A: Since you are posted with multiple sub-parts. As per the rule, I am answering the first three…

Q: Disulfide dichloride (S,Cl,) is used in the vulcanization of rubber, a process that prevents this…

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Q: Menthol, the substance we can smell in mentholated cough drops, is composed of C, H and O. A…

A: Given: Mass of sample = 0.1005 g Mass of CO2 = 0.2829 g. Mass of H2O = 0.1159 g. Molar mass of CO2 =…

Q: If 10.00 ml of 0.0138 M KIO3 are used in the first part of the standardization process, how many…

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Q: The depletion of ozone (O,) in the stratosphere has been a matter of great concern among scientists…

A: Limiting reagent: It is defined as the reactant in a chemical reaction which is present in lesser…

Q: How many hydrogen atoms are in the compound (NH4)2CO3? Alex has a big black tattoo of a teddy bear…

A: #Q.1: The given chemical formula is (NH4)2CO3.

Q: Suppose 6.44 g of chlorine, Cl2, are used to prepare dichlorine pentoxide, Cl2O5. How many moles of…

A: Write the chemical reaction  Cl2 + 5/2O2 --------> Cl2O5   This implies 1 mole of Chlorine…

Q: Menthol, the substance we can smellin mentholated cough drops, is composed of C, H, and O. A0.1005-g…

A: Calculated the number of moles of C and H present in the hydrocarbon,

Q: 3. In the balanced chemical equation Si+2CI2→ SiCIa, 56 g of silicon is combined with 35 g of…

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Q: One of the first chemical WMDs, researchers initially produced VX nerve agent for retail sale in the…

A: we need to determine the empirical formula of the nerve agent

Q: How many molecules of SO, can be formed from 0.75 moles of O, (assuming excess SO,) from the…

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Q: Ferrocene, synthesized in 1951, was the first organic iron compound with FeC bonds. An understanding…

A: Given: Mass of sample=0.9437g Mass of CO2 produced= 2.233g Mass of water produced=0.457g We know…

Q: A- Balance The Equation NO2(g) + H2O(1) -- - HNO3(1) + NO(g) B- What is formula mass of K2Cr207…

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Q: Menthol, from oil of mint, has a characteristic odor. The compound contains only C, H and O. If 83.1…

A: Empirical formula :- The chemical formula which shows only relative number (simple ratio) of  atoms…

Q: Asprin, Cg Hg O4, is synthesized by the reaction of salicylic acid, C7H6 O3, with acetic anhydride,…

A: NOTE: please note the given equation is incorrect. I have corrected it and written proper equation.…

Q: O Previous Page 8 of 16 Next O Subm Silicon carbide, SiC, is one of the hardest materials known…

A: Silicon dioxide reacts with carbon to form carbon monoxide and silicon carbide. The equation for the…

Q: 1.- Calculate-the mass ff Ba3(PO4)2 produced from the reaction of 0.85 g NazPO4:12H20 with excess…

A: The relationship between moles, mass and molar mass is: Moles = MassMolar mass

Q: 5. Chloral hydrate (C2H3C1302) is a drug formerly used as a sedative and hypnotic. It is a compound…

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

Q: Pure iron, Fe, can be produced from an ore called hematite, Fe, O,, by reaction with carbon at high…

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Q: 1. Calculate the molecular mass, in g/mol, of iron (II) sulfate heptahydrate. work. 2. Adipic acid…

A: we have to find molar mass of the given compound

Q: Be sure to answer all parts. Fermentation is a complex chemical process of wine making in which…

A: Intial Mass of glucose taking part in reaction =926.1 g Density of ethanol = 0.789g/ml Chemical…

Q: 2. What is the actual yield of the product?

A: Actual yield is  defined as the amount of a product that is formed from a chemical reaction

Q: Dichlorine monoxide, Cl,0, is sometimes used as a powerful chlorinating agent in research. It can be…

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Q: Consider the following, explosive chemical reaction: 2 Na + 2 H2O → 2 NaOH + H2 a) What is the…

A: The given reaction is, 2Na + 2 H2O → 2 NaOH + H2 To find: a) What is the theoretical mass of NaOH…

Q: 12. When 0.25 g of Na combines with elemental oxygen under certain conditions, it forms 0.42 grams…

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Q: 2. An excess of reagent A and 419.15 g of reagent B shown below are reacted together to give product…

A: When alcohol reacts with carboxylic acid, an ester is formed.

Q: Suppose 6.22 g of chlorine, Cl2, are used to prepare dichlorine pentoxide, Cl2O5. How many moles of…

A: Here amount of Cl2 reacts is given. From that using stoichiometric ratio we can determine how many…

Q: Menthol, from oil of mint, has a characteristic odor. The compound contains only C, H, and O. If…

A: Given that, Weight of menthol = 89.6 mg = 0.0896 g Weight of CO2 = 252 mg = 0.252 g Weight of H2O =…

Q: Suppose 3.61 g of chlorine, Cl2, are used to prepare dichlorine pentoxide, Cl2O5. How many moles of…

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Q: Calculate the number of moles of oxygen

A: Molar mass of the molecule is the sum of the molar mass of the individual atoms present in the…

Q: Cobalt forms two oxides. One has 21.40% by mass and the other     28.9 % Au. What are the empirical…

A: The oxides formed by cobalt shall only contain cobalt and oxygen as elements in it. The percent…

Q: A- Balance The Equation NO2(g) + H2O(1) -- HNO3(1) + NO(g) B- What is formula mass of K2Cr207…

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Q: The depletion of ozone (O3) in the stratosphere has been a matter of great concern among scientists…

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Q: b) Jamal has only 11-2 g of potassium hydroxide and wants to know what mass of potassium sulfate he…

A: In this question, we have to find out the correct answer of given problem by the help of the mole…

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.