1. One drop of water from a medicine dropper has a volume of approximately 0.050 mL (1 mL = 1 cm3) a.) Determine the number of water molecules in a drop of water. (The density of water is 1.0 g/cm3). b.) How many H atoms would be present in these molecules?

Q: How many grams of Cl, are needed to form 82.4 g of AlCl, ? 2 Al(s) + 3 Cl, (g) 2 AICI, (s)

A: two moles of Al reacts with  3moles of chlorine gas forms 2 moles of AlCl3 Calculation of no of…

Q: - Cucl(aq) H2S(g) How many moles of copper(l) sulfide could be produced from 12.6 moles of copper(I)…

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Q: products

A: According to the question, barium hydroxide(Ba(OH)2) reacts with lead (II) nitrate(Pb(NO3)2).  We…

Q: the formation reaction for HClO3(g)

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Q: Consider the balanced reaction of magnesium and oxygen. 2 Mg + O2 → 2 MgO What mass, in grams, of…

A: Answer :- 2.17 g MgO The mass of MgO produced from 1.31 g of Mg and 2.88 g of O2 = 2.17 g…

Q: Consider the balanced reaction of magnesium and oxygen. 2Mg+O2⟶2MgO2Mg+O2⟶2MgO What mass, in grams,…

A: Given: mass of Mg = 1.89 g mass of O2 = 2.07 g molar mass of Mg = 24.305 g/mol molar mass of O2 =…

Q: Consider the balanced reaction of magnesium and oxygen.   2Mg+O2⟶2MgO2Mg+O2⟶2MgO What mass, in…

A: Given, mass of O2 = 2.81 g Mass of Mg = 1.51 g Molar mass of MgO = 40.3 g/mol Molar mass of Mg =…

Q: 1)How many outer-shell electrons do each of the atoms have? Rn Ga C

A: Since we are entitled to answer up to 1 question, we’ll answer the first question as you have not…

Q: When barium chloride (BaCl2) is dissolved in water, the water conducts electricity. In what form…

A: Given : Solute barium chloride i.e BaCl2  And solution of BaCl2 solution conducts electricity.

Q: how many moles of KCl will be formed from 2.73 moles of KClO3?

A: In this question we want to determine the moles of KCl, which is formed from decomposition of KClO3.…

Q: Dimethyl oxalate, an important pharmaceutical chemical, can be prepared by reacting oxalic acid with…

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Q: 32. How many grams of Li;N can be formed from 1.75 moles of Li? Assume an excess of nitrogen. 6…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: What is the maximum mass of B4C that can be formed from 2.00 moles of boron(III) oxide?

A: Boron(III) oxide is B2O3 B4C can be prepared by the reaction B2O3 with carbon. The chemical reaction…

Q: Which substance will conduct electricity? o Pure water (H2O) o Epsom salt dissolved in water (MgSO4)…

A: Electrolytes: It is a substance that ionizes or dissociates completely into ions when dissolve in…

Q: 8.55 moles of PbO are formed by this reaction how many moles of SO2 will be formed? Pertaining to…

A: Mole is a unit to represent the quantity of fundamental particle like proton neutron and electron.

Q: If atoms of the metal magnesium were to react with molecules of the nonmetal fluorine, F2 , how many…

A: Concept: In a reaction of metals with non-metals, there is transfere of electrons take place from…

Q: Consider the balanced reaction of magnesium and oxygen.   2Mg+O2⟶2MgO2Mg+O2⟶2MgO What mass, in…

A: Number of moles of Mg and O2 are calculated as follows: No. of moles of Mg=massmolar mass=1.41…

Q: Barium carbide (BaC2) reacts with water to produce acetylene (C2H2):                 BaC2 (s) +…

A: Given, mass of H2O = 9.10 g Molar mass of H2O = 18 g/mol Molar mass of C2H2 = 26.04 g/mol

Q: etermine the number of water molecules in 1.00 mole of water.   options:   3.00 × 10–23   none of…

A: The answer is given as follows The according to avogadro laws that one mole of any species contains…

Q: Nitrogen oxides are pollutants and common by-products of power plants and automobiles. NO, can react…

A: Given is reaction between NO2 and NO in smog.

Q: 1) Na OEt ? 2) H,0O efa OH (А) (B) (C) (D) (E)

A: This reaction is example of claison condensation.

Q: 19. What is the best way to visualize the ions in a chemical reaction? O The best way to visualize…

A: When a chemical reaction is proceed there are various ways to explain it or write it. For eg., in…

Q: Consider the balanced reaction of magnesium and oxygen. 2 Mg + O2 2 MgO What mass, in grams, of MgO…

A: The given chemical reaction between magnesium and oxygen isas follows,  2Mg +O2 →2MgOamount of Mg…

Q: 15 mL of Cl2O7 (density = 1.9 g/mL) reacts with 10. mL of H2O (density = 1.0 g/mL). How many…

A: we have the equation as Cl2O7 + H2O→2HClO4 We know that, Density =MassVolume Hence Mass=Density X…

Q: A mixture contains only NaCl and Fe(NO3)3 . A 0.456-g sample of the mixture is dissolved in water,…

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Q: Consider the balanced reaction of magnesium and oxygen.   2Mg+O2⟶2MgO2Mg+OX2⟶2MgO   What mass, in…

A:

Q: Suppose that you are required to calculate the number of moles for E Ar atoms. (E is a number)…

A: Detail mathematical calculation is shown below

Q: 1. What mass of potassium chlorate would be needed to form 56.8 g of oxygen? 2KCIO3 ----> 2KCI + 3…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: The density of the 99.8 ml solution is 1,093 g/ml and it contains 12% KI by mass. This solution is…

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Q: B. COMBUSTION REACTION: hydrocarbon + oxygen → water + carbon dioxide 1. CH20 +_02 → _CO2 + H2O 2.…

A:

Q: What is the brown gas (name and formula) that nitric acid reacting with copper produces? How can you…

A: #1: Nitric acid, HNO3(aq), being a strong acid, reacts with copper, Cu(s) to produce a brown gas.

Q: Barium carbide (BaC2) reacts with water to produce acetylene (C2H2):                 BaC2 (s) +…

A: Interpretation: In the given reaction, When 9.10 g of H2O  react with BaC2 which gives how many…

Q: • What mass of carbon dioxide is emitted by an automobile per 5.0 x 102 g pure octane used?

A:

Q: - When 2.6 grams of acetylene is combusted in an amount of oxygen (8 grams), The result is .…

A: • Here, it has been said that 2.6 grams of acetylene is combusted with 8.0 grams of oxygen. • As…

Q: What do you mean by “aliquot” and “dilution”?

A: In inorganic chemistry, while titration these terms, i.e. aliquot and dilutions are generally used.…

Q: 5. Knowing that one mole of water has a mass of 18,02 grams, calculate the number of molecules in…

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Q: 1. Naci 2. KMno, 3. Mg(NO.) 4. Calculate the percent composition of carbon in Caco,. 5. How many…

A: Q6) Iron to be recovered from 25.0 g Fe2O3                                  Molar mass of Fe2O3 =…

Q: 12KOH + 6I2 -> 10KI + 2KIO3 + 6H2O calculate the number of moles of iodine (elemental) to produce…

A: We have to find out the number of Mole of I2 to formed 10 mole of KI

Q: u (II) sulfate exists as a hydrate. It has many practical uses including use as a fungicide and…

A: Given: sampel mass = 42.75 g after heating mass = 27.38 g mass of water driven off = 42.75 -27.38…

Q: calculate the molecules of carbon dioxide in this amount. A. 5.15 * 10^22 B. 3.56 * 10^23 C. 2.29…

A:

Q: Consider the balanced reaction of magnesium and oxygen.   2Mg+O2⟶2MgO2Mg+OX2⟶2MgO   What mass, in…

A: The balanced reaction taking place is given as, => 2 Mg + O2 -------> 2 MgO  Given : Mass of…

Q: Consider the balanced reaction of magnesium and oxygen. 2 Mg + O2 → 2 MgO What mass, in grams, of…

A:

Q: A chemist is given a sample of the CuSO4 hydrate and asked to determine the empirical formula of it.…

A: The hydrate compound has water of crystallization in it. This means that it has water in its crystal…

Q: What is the maximum mass of ammonia that can be produced from a mixture of 1.40 x 10' g N, and 4.60…

A: Given data, According to the stoichiometry, One mole ( 28.014 g ) of nitrogen will react with three…

Q: Assuming the reaction goes to completion, how many moles of strontium fluoride should we expect to…

A: Given: Sr(NO3)2 + 2NaF → 2NaNO3 + SrF2 Concentration of: Sr(NO3)2 = 3.016M NaF = 3.644 M Volume of…

Q: If mass of SO2 is 24g , calculate: 1.1. the molar mass of SO2 The number of mole of SO2 The number…

A: Given.  Mass of SO2 = 24 g  Molar mass of SO2 = To be determined  Atomic wt. Of Sulphur = 32.065…

Q: How many grams of aluminum oxide (Al2O3) will be formed from 12.1 grams of oxygen (O2)

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Q: 4. What mass of Cu(10,); can be formed from 0.5000g of Cuso, SH,0?

A:

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.