QUESTION 3 This task asked you to understand Avogadro's constant. What is the value of Avogadro's constant (tc significant figures)? O 6.02 x 10E23 207.2g/mole 1 amu 22.4L/mole amu or atomic mass unit or what Gizmos calls "u"

Q: Which sample has the greatest mass of atomic oxygen?   36.0 g of H2O   1.0 mol of NO2   1.20 ×…

A: Three samples  are given:36.0 g of H2O1.0 mol of NO21.20 × 1024 molecules of O2

Q: Convert 47.5 g O2 to mol O2. Group of answer choices 2.860 x 1025 mol 0.674 mol 1.484 mol 1.52 x 103…

A: The question is based on mole concept. We have been given mass of oxygen. we have to convert it into…

Q: Complete the table. Element Moles Mass Cr 0.00442 Fe 73.5 mg Ti 1.009 x 10-3 Hg 1.78 kg

A: Mole is represented by the symbol mol. It is unit of measurement of substance. Mass is defined as…

Q: How many O atoms are in 2.00 g  Al2O3 ? Al = 26.98 g/mole, O = 16.00 g/ mole

A: Recall the data, mass of Al2O3=2.00 g molar mass of Al=26.98 g/mole molar mass of O=16.00 g/ mole

Q: 2. Convert 5.24 x 10" K,PO,molecules to grams.

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Q: Calculate the mass of an H2 molecule in kg.

A: We know the molar mass of H2, but this includes 6.022x1023 molecules of H2. In the question, it is…

Q: The elemental mass percent composition of succinic acid is 40.68% C, 5.12% H, 54.19% O. Determine…

A: The Mass of compound = 100 g The mass of C = 40.68 g The molar mass of C = 12 g/mol  The mass of H =…

Q: 13. How many moles are represented by 3.01·10“ helium atoms? 5 moles 0.75 moles 0.50 moles 1 mole

A: Given: no of helium atoms = 3.01 x 1023 atoms We know that, Avogadro number, NA = 6.02 x 1023 atoms

Q: Determine the empirical formula of ibuprofen.

A: Number of moles = mass/molar mass  Molar mass of C = 12.01 g/mol  Molar mass of H = 1.0 g/mol  Molar…

Q: Determine the number of moles in 3.06 x 1023 formula units of CaCl₂.

A: From the knowledge of mole concepts, 1 mole of CaCl2 contains 6.023 × 1023 formula units of CaCl2.

Q: A sample of Water, H2O, has a mass of 55 grams. Determine the number of moles in the sample.

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Q: 19 How many moles are there in 2.00×10 Molecules of C Cly?

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Q: How many moles of water vapor are produced for every mole of methane consumed in the combustion…

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Q: 4. Dimethyl nitrosamine, (CH3)2N20, is a carcinogenic substance that may be formed in foods,…

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Q: Phosphoric acid can be prepared by reaction of sulfuric acid with “phosphate rock" according to the…

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Q: Calculate the mass in grams of 3.19 × 10²4 molecules of propylamine. The chemical formula for…

A: Molecules of propylamine = 3.19 × 1024  Molecular formula of propylamine = C3H9N  Molar mass of…

Q: I was looking over and was doing calculations so I could understand and no offense but shouldn't the…

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Q: Convert 1.69 × 1024 atoms of carbon to moles of carbon. 1.69 x 1024 atoms = mol C

A: The objective of this question is to convert the given number of atoms of carbon into moles of…

Q: A student synthesizes tin oxide to create a compound with generic formula SnxOy. She does this by…

A: The mass of tin is = 30.80 g The mass of tin oxide is = 39.10 g The mass of oxygen is = 39.10 g -…

Q: Convert 6.00 moles of calcium to atoms. O 8.50x1024 atoms O 1.56x1023 atoms O 3.61x1024 atoms…

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Q: Complete the percent composition for the atoms in Na₂O. All answers are numbers. Use no units. Atom…

A: The compound given is Na2O Element molar mass of sodium = 23.0 g/mol  Element molar mass of oxygen=…

Q: moles

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Q: chloral hydrate (C2H2Cl3O2) is a drug formerly used as a sedative and hypnotic. It is the compound…

A: We are to calculate the molar mass of chloral hydrate, C2H3Cl3O2 . Chloral hydrate is a drug used as…

Q: Aluminium has a density of 2.70 | g/cm3 . How many moles of aluminum are in a 13.2 cm3 block of the…

A: Density :- Density of a substance is its amountof mass per unit volume . So , density is the…

Q: How many moles are in 1.88 g Al2O3? Al = 26.98 g/mole, O = 16.00 g/mole.

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Q: A recipe calls for 0.033 moles of nitrogen dioxide. To follow that recipe, how many grams of NO2…

A: Given,moles of nitrogen dioxide ( NO2 ) = 0.033 mol

Q: 2H2 + O2 --> 2H2O If you have 50 grams of hydrogen, how many moles of water could be produced?

A: Reaction:-  2H2 + O2 --------> 2H2O Mass of Hydrogen gas (H2)  = 50 g  Molar mass of Hydrogen(H2)…

Q: A 27.129 mg sample of a chemical known to contain only carbon, hydrogen, sulfur, and oxygen is put…

A: Answer: Empirical formula is the formula containing all the atoms present in the compound in their…

Q: 009 (part 1 of 4 chemist measured out 8.25 g of copper(II) romide tetrahydrate (CuBr2 · 4 H2O). How…

A: Molar mass of CuBr2.4H2O=295.4151 g/molNo, of Oxygen atoms present in the molecule =4Mass=4×(16…

Q: convert 352 g Na2S2O3 to moles of O.and to total numbers of atoms

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Q: How many molecules of water are there in 15.0 mol water? Hint:  Use N = nNA  OR use Avogadro's…

A: N = nNA Where N = number of molecules  n = number of moles = 15 mol  NA = avagadro number =…

Q: If 6 moles of Si and 6 moles of N2 are combined in a reaction flask, what remains in the reaction…

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Q: In chemistry, what is meant by the term “mole?” What is the importance of the mole concept

A: Mole is a unit to  express the mass, Number and volume of a Substance in Chemistry.  It is a bigger…

Q: A chemist measured out 8.25 g of copper(II) bromide tetrahydrate (CuBr2 ·4 H2O). How many moles of…

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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.