QUESTION 10 Hexane (C6H14) is a common solvent used in extraction of oils from seeds or vegetables. How many molecules are contained in a sample of hexane if its mass is 100.0 g. 20 5.191 x 1027 6.986 x 1023 6.022 x 1023 QUESTION 11 How many atoms are contained in 5.000 g of carbon dioxide? 2.052 x 1023 6.022 x 1023 6.842 x 1022

Q: 3.A sample of 7.2 moles of the ionic compound, potassium dichromate, K2Cr2O7, is present. How many…

A: The formula of the given compound is K2Cr2O7. One mole of potassium dichromate contains the number…

Q: amount

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

Q: What is the mass in grams of each of the following? 1.   1.67 x 1015 atoms of Mn 2.    6.45 x 1023…

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Q: Question 1 A sample of iron ore consisting of Fe;O3 has a mass of 79.846 g. How many moles of Fe;O3…

A: Introduction: As per the International System of Units (SI), mole is the unit of measurement for the…

Q: 1. How many molecules are in 500.g of iron (II) phosphide? 2. Whats the mass (in grams) of 500 moles…

A: Given,  One mole of any substance contain Avogadro' s number of molecules.  Avogadro's number =…

Q: Calculate the following.  number of atoms in 8.21 g Li number of atoms in 32.0 g Br2 number of…

A: Solution [1.]  Mass of Li = 8.21 g Molar mass of Li = 7 g/mol So, no. of moles of Li = Mass / Molar…

Q: Nitrogen dioxide is a component of urban smog that forms from gases in car exhaust. How many…

A: Detail mathematical calculation is shown below

Q: How many moles of calcium atoms do you have if you have 4.06 x10^21 atoms of calcium.

A: Given : Number of atom of calcium = 4.06 x10^21   Avogadro's Number = 6.023 × 10^23   Finds :…

Q: What is the molar mass of Al2(Cr2O7)3?    809.8554 g/mol B. 269.9518 g/mol C. 401.9448 g/mol…

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Q: Find the percent composition of carbon in growth hormone, the substance that controls your body's…

A: Given  Formula  = C39H60N8O13  % Composition of carbon = ?

Q: How many grams are there in 4.5 x10 22 molecules of MgBr ,? O 1.47 x 10 44 g 8.28 x 10 24 g 0.075 g…

A: Given  molecules of MgBr2 = 4.5 x 1022 molar mass of MgBr2 = 184.113 g/mol   Conversion factor -…

Q: Manganese (Mn) is a transition element essential for the growth of bones. What is the mass in grams…

A: Given, Number of atoms of Mn = 3.22 x 1020 atom Mass of bone = 1 Kg Formula Used: Number of…

Q: Find the molecular formula of the following compounds 1. A chloride of silicon contains 79.1%…

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Q: How many formula units are in 83 moles of MgBr2?   Question 9 options:   0.87 F.U.   7.25 x 1021…

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

Q: 3. What is the difference between an empirical formula and a molecular formula?

A: If the percent composition of the elements are known then the empirical formula can be determined.…

Q: Reaction: 2Al + 3C12 In an experiment, 54 grams of aluminium reacted with excess chlorine gas. How…

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Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: Canvas O AICI 4. O Al 3Cl. Question 5 What is the mass in grams of 0.8 mol of glucose, C 6H 120 6?…

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Q: Florasulam is an herbicide with the chemical formula C12H8F3N5O3S. Answer the questions below…

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Q: compound is 54.53% C, 9.15% H, and 36.32% O by mass. What is its empirical formula? Insert…

A: We have given that  The molecular mass of the compound is 132 amu Percentage of C = 54.53%…

Q: Determine the mass of 1.805 x 1022  molecules of calcium sulfate, CaSO4.   Question 29 options:…

A: Given that:  Molecules of CaSO4 = 1.805×1022 Molar mass of Ca = 40.0g/mol Molar mass of S = 32g/mol…

Q: What is the molar mass of oxygen (O2)? A. 1.204x1024 g/mol B.6.02x1023 g/mol C.15.9994 g/mol D.…

A: Given Questions about molar mass of O2, Molar mass of Ca3(PO4)2 and no.of atoms in 1 mole of Na.

Q: Herbimycin is an herbicide with the chemical formula C30H42N2O9. Answer the questions below…

A: Note: As per our guidelines, we are supposed to answer only three subparts when multiple subpart…

Q: Question 10 of 31 Determine the mass in grams of 3.00 x 1021 atoms of arsenic. (The mass of one mole…

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Q: Given molar mass, find the mass in grams of each of the following substances: PRACTICE 2.11 x 1024…

A: 1. Molar mass of Cu = 63.55 g/mol  Atoms of Cu = 2.11 × 1024  We need to find mass of Copper.  2.…

Q: If you have 6.3E23 atoms of carbon, how many moles do you have? Question 6 Thore are C23 moleculcs…

A: The given problem can be solved by using the relation give below as; 1 mole = 6.022×1023 atoms or…

Q: Question 1 of 8 <. What is the mass, in grams, of 9.78 × 10 molecules of methanol (CH,OH) ? mass:…

A: moles of CH3OH = ( molecules / Avagadro number )  Moles of CH3OH = 9.78 • 10^24 / ( 6.022 • 10^23 )…

Q: Analysis of a compound showed that it contained 76.0 % fluorine atoms and 24.0 % carbon atoms by…

A: Analysis of mass of a compound is very useful to determine the stoichiometric reaction equation. The…

Q: For each of the following gemstones, determine the mass of compound present in the given moles of…

A: Given  1) Formula = Be3Al2(SiO3)6     Number of mole = 0.0170 mole        mass    = ? 2) Formula   =…

Q: : The molar mass of adamantium (Ad) is 45.09 g/mol. Determine mass of 0.0675 moles of Titanium (IV)…

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Q: * 00 T F %#3 } H. 7. 6. D. 5. 4. E. MacBook Pro Q Search or enter website name OHO OHO molecular…

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Q: A chemical compound has a molar mass of 136.63 g/mol. How much would 2.46x 1022 molecules of this…

A: We know that,                1mole=6.023 x 10^23 molecules Also we knows,     1mole=molar mass of…

Q: A compound is found to contain 18.28 % phosphorus , 18.93 % sulfur , and 62.78 % chlorine by mass.…

A: Given: Percent of phosphorus by mass = 18.28% Percent of sulfur by mass           = 18.93% Percent…

Q: How many grams are in 7.3×10²⁴ formula units in Mn? Atomic weight of Mn=54.94

A: Given,  formula units of Mn =  7.3×10²⁴

Q: QUESTION 8 You need 0.789 mol of salt (NaCI)? How many grams of the solid would you weigh? Use the…

A: In question 8, we have to find the mass of 0.789 mol of NaCl. In question 9, we have to calculate…

Q: order to identify an unknown compound found at an environmental cleanup site, an analytical chemist…

A: We can determine the empirical formula from the mass percentage as below : At first we need to…

Q: How many atoms are in 0.1 g of NaCl?     Question 6 options:   9.8E-24   0.1   1E21   3.5E24…

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Q: B. FIND THE MOLAR MASS OF THE FOLLOWING COMPOUNDS. THE FIRST ONE IS DONE FOR YOU. USE YOUR PERIODIC…

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Q: Question 18 What is the mass percent of chromium in Fe2(CrO4)3, which has a molar mass of 460 g/mol?…

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Q: a. Calculate the molar masses of these two compounds(CH2FCF3 and CHClFCF3). b. What is the percent…

A: a) This question asks us to find the molar mass of two compounds given. b) Percentage composition…

Q: 11) How many grams are in 2.05 x 10 molecules of dinitrogen pentoxide (N,O)? A) 36.8 g B) 0.315 g C)…

A: Note : As per our guidelines, we are supposed to answer first question. Please repost other question…

Q: Which quantity has the greater mass? Group of answer choices 1 mol of C2H4 molecules 3.01 x 1023…

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Q: Reaction: 2Al + 3C12 In an experiment, 54 grams of aluminium reacted with excess chlorine gas. How…

A: Given,  Mass of Aluminium = 54 g    1 formula unit = 6.022 × 1023 formula units  No.of moles  =…

Q: The CSI crime lab found the empirical formula of a compound to be C2H3O. The molar mass of the…

A: Molecular weight of empirical formula C2H3O is (12×2+1×3+16)=43 Molecular weight = n × empirical…

Q: What is the molecular formula of a compound (molar mass = 240. g/mol) that has the empirical formula…

A: n = molecular mass ÷ empirical formula mass Molecular formula = n x empirical formula

Q: QUESTION 4 A 1.50-g sample of Na2SxO6 contains 6.68 x1021 sodium ions. Determine the value of x.…

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Q: 3. To convert from grams to number of molecules, you need to use: A) Avogadro's number B) Molar mass…

A: In the event that you know the construction of the atom, you can sort out the sub-atomic weight. A…

Q: Q 38

A: The empirical formula of a chemical compound can be derived from some knowledge:- A:- Percentage…

Q: How many atoms are present in 123 g of magnesium cyanide? a. 9.7 x 1023 b. 2.91x 1024 c. 2.83 x 1028…

A: Formula of magnesium cyanide is Mg(CN)2

Q: What is the empirical formula of a compound if its percent by mass composition is 69.6% C, 8.34% H,…

A: The empirical formula of a compound is expressed as the simple positive integer values of the…

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.