What is a MOLE? O Aunit of substance containing a certain amount expressed in grams O Aunit of substance containing Avogadro's number of particles O A substance comprised of either atoms, molecules or ions O Aunit of substance containing either atoms, molecules or ions

Q: Determine the number of oxygen atoms present in25.0 g of carbon dioxide.

A: From given data  Mass of carbon dioxide (CO2) = 25 g  Also,  Molar mass of carbon dioxide = 44…

Q: The molar mass of NBr3 is (2.22 x 10² mol Br₂)(- mol NBr3 g mol NBr3 -) = mol Br₂ g NBr3 mol NBr3 g…

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Q: Use the References to access important values if needed for this question. For the molecular…

A: Here we have to determine the conversion factor to convert moles of PCl3 into number of molecules of…

Q: When 2.750 g of the oxide of lead is stronglyheated, it decomposes and produces 0.0640 g of oxygen…

A: The determination of the simplest form of a compound is called its empirical formula. It is…

Q: Arsenic reacts with oxygen to form a compound AsxOy. If 2.354 g of arsenic forms 3.611 g of the…

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Q: Which of the following statements BEST describes a mole? O It is equal to the number of molecules O…

A: 1 mole contains 6 X 10 23 no of molecules. Therefore it is equal to the Avogadro's number of…

Q: 4. Find the mass of 3.66 mol of N2, nitrogen gas.

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

Q: Write the empirical formulas of ionic compounds, given thecharges of their component ions?

A: The chemical formula of a compound in which elements are present in the simple whole number molar…

Q: How many moles are in 33.1 g of SO3? How many molecules does it contain?

A: Amount of SO3 given = 33.1 g Moles Of SO3  = To be determined No of Molecules of SO3 = To be…

Q: View Policies Current Attempt in Progress A balanced chemical equation contains the term "2Ba(OH)2…

A: Introduction :  Atom can be defined as the smallest unit of matter , it is composed of nucleus and…

Q: A sample of trifluoroacetic acid, C,HF,O2, contains 72.1 g of fluorine. Calculate the mass of the…

A: 1- First calculate the moles of fluorine atoms :  We know that,  moles of F = ( mass / molar atomic…

Q: The molecular weight of Carbon is 12.0 g/mole. How many moles of Carbon in 18 g of Carbon?

A: Given Molar mass = 12 g/mole Mass = 18 g

Q: For the molecular compound phosphorus pentachloride, what would you multiply "moles of PCI5" by to…

A: To determine the multiplying factor to convert the moles of PCl5 to the number of molecules of PCl5.…

Q: An unknown compound has the following chemical formula: Fe(NO,), where x stands for a whole number.…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: Calculate the number of atoms in 12.45 grams of iron. 1.342 x 1023atoms 1.342 x 1022toms 0.223 atoms…

A: Given information, Given mass of iron = 12.45 g Molar mass of iron = 55.845 g/mol Calculate : Number…

Q: What do you call the mass of one molecule of a substance?     Mass Number   Atomic Number   Molar…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: Mass of empty evaporating dish + watch glass 65.362 g B Mass of dish + watch glass + initial solid…

A: Given A) Mass of empty evaporating dish + watch glass =  65.362 g B) Mass of dish + watch glass +…

Q: 20. Determine the molar mass of NH3 and H2O. Then determine the number of moles of H2O in 6.01grams.…

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Q: Describe how molecular formulas and structural formulas areused to represent the compositions of…

A: Molecular formulas and structural formulas are used to represent the compositions of molecules that…

Q: . Determine the moles of copper and oxygen in the copper oxide from the data 2. What is the…

A: The number of moles of a substance are given by the formula  moles = massmolar mass

Q: C4H10 and C6H12 are both hydrocarbons. Whic one contains higher mass percentage of carbon?

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Q: A compound of C,H,N and O has the following percent composition by mass: 17.8% C, 2.22% H, and 20.7%…

A: Empirical formula represents the simplest whole number ratio of elements that are present in a…

Q: A compound has the chemical formula SrX2, where X is an unknown nonmetal. The percent by mass of Sr…

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Q: How many moles are equal to 4.5 x 1023 molecules of carbon monoxide? (Round to two decimal places).

A: No of CO molecules = 4.5 × 1023 molecules No fo moles = to be determined

Q: The chemical formula for lithlum fluorlde Is LiF. A chemist measured the amount of lithlum fluoride…

A: Molar mass of LiF is sum of atomic masses of Li and F.Atomic mass of Li is 6.941 and atomic mass of…

Q: Is the subscript of an element the same as its number of moles? Does the subscript mean how much…

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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: 10 Which of the following is the strongest oxidizing agent? Br2(l) Au3+(aq) Br-(aq) Au(s) Ag(s)

A: Au+3 is the strongest oxidizing agent .

Q: The chemical formula for the C17H14F3N3O₂S. 0.0937 moles? anti-inflammatory drug celebrex is What is…

A: Given : moles = 0.0937 mole  Mass = mole × molar mass

Q: Given the following imaginary elements and average atomic masses, calculate the molar mass of the…

A: Given compound is AX2R3 Given atomic mass of A 37. 89                                         X…

Q: moles

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Q: Consider a 10.1 g sample of the compound cesium phosphate. Given that you have 0.0205 moles of…

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

Q: 4. Complete the following table Mass Moles Particles 3.65 moles Mg 29.54 g Cr 3.54 x 1025 atoms P…

A: Mass = Molar mass * Moles The no of particles in 1 mole = 6.023*1023

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

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

Q: A sample of oxygen has a mass of 25.2 grams. How many O atoms are there in the sample?  atoms How…

A: Calculation given as follows

Q: 81.77 moles of methane to molecules

A: Given: Moles of methane = 81.77 mol.

Q: Please complete the compund table as per attached file. Thanks

A: To solve this problem we have to calculate the percentage of each component elements present in…

Q: Mercury (Hg) metal is used in thermometers and making car headlights, and has a mass of 1.0473g.…

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Q: Given the following imaginary elements and average atomic masses, calculate the molar mass of the…

A: Given compound is A2DR4given atomic mass of A        19.32D         96.18R         20.20X…

Q: How many atoms are present in 0.430 g of gold?

A: Given, mass of Gold = 0.430 g  Molar mass of Gold = 196.97 g/mol Number of Atoms = ?

Q: Consider a 10.1 g sample of the compound cesium phosphate. a) What is the chemical formula for…

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

Q: True

A: Question True or false, the molar mass of a substance is the total mass of all atoms in the chemical…

Q: mercury occurs as a sulfide one called cinnabar, Hgs. How many moles of HgS are contained in a…

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Q: Question 11 How many moles of carbon are present in 1.37 x 10 25 atoms of carbon? O 8.25 moles O…

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Q: The formula for alum has 1 Al. How many units alum could be made from 7 Al atoms? Answer with a…

A: The molecular formula of alum is K2(SO4)·Al2(SO4)3·24H2O or KAl(SO4)2·12H2O