How many bromine atoms are contained in 8.94 moles of bromine molecules?

Q: 8. How many oxygen atoms are contained in 5.25 g of NO2 gas?

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Q: Determine the number of molecules in 28.6 grams of SO₂.

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Q: How many total atoms are in 0.690 g of P2O5?

A: Calculate the moles of P2O5 Moles = grams / molarmas

Q: Determine the number of molecules of SO3 and atoms of oxygen contained in 0.881 g of SO3.

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Q: How many moles of NH3 are present in 4.98 g of the compound?

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Q: An unknown compound is processed using elemental analysis and found to contain 117.4 g of platinum,…

A: We know that,  Number of mole = given mass/molar mass Atomic mass of platinum =195.084 g

Q: Determine the number of molecules in 41.3 grams of NH₃.

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Q: Determine the mass (in g) of 0.363 moles of O2

A: The first step in this calculation is to identify the molar mass of O2. The molar mass of an element…

Q: ow many ozone (O3) molecules are present in 24.0 grams O3?

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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: How many grams would 71,934,010,495 atoms of a substance weigh if it has a molar mass of 23.7889…

A: Number of atoms = 71,934,010,495 atoms  6.02×1023 atoms = 1 mol 71,934,010,495 atoms =…

Q: Determine the number of molecules in 42.5 grams of SO2.

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

Q: Complete the following table. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in…

A: The question is based on mole concept The formula used and solution is given in the picture

Q: How many fluorine atoms are present in 5.85 g of CF4?

A: Given, Mass of C2F4 = 5.85g

Q: How many moles of carbon dioxide are present in 1.03x10^23  molecules of this compound?

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Q: How many moles of NH3 are there in 1.93 grams of NH3?

A: No. Of moles = gram weight / molar mass Molar mass of NH3 = 17

Q: alculate the number of moles of He atoms present in 4.65 g of H

A: Number of moles = weight / atomic weight    Given ,  weight = 4.65g Atomic  weight of He = 4 g/mol

Q: Determine the number of molecules in 34.8 grams of CO₂.

A: Molar mass of CO2 = 44.01 g/mol Molar mass of CO2 = mass of one mole of CO2 = mass of 6.022×1023…

Q: How many total atoms are in 0.610 g of P2O5?

A: Number of moles is the ratio of mass of element and molecular mass of element. It is represented by…

Q: Determine the number of molecules in 38.6 grams of CO₂.

A: Number of molecules in 38.6 g of CO2 can be calculated as :

Q: Determine the number of molecules in 16.1 grams of SO₂.

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Q: How many molecules are there in 345.2 grams of HCl?

A: 1 mole = 6.022×1023 (Avogadro's number) The mass of one mole of molecules of a substance is called…

Q: How many N2 molecules are in 473.2 grams of N2?

A: Given that   Amount of Nitrogen gas N2 = 473.2 grams The molar mass of Nitrogen N2 = 28 gm/mol To…

Q: Determine the number of molecules present in 0.560 g of CH4.

A: Given data contains, Mass of methane=0.560 g. Molar mass of methane=16.04 g/mol

Q: How many moles of potassium cyanide, KCN, are present in a sample containing 67.1 grams of the…

A: Given, Mass of potassium cyanide (KCN) = 67.1 g Moles of potassium cyanide (KCN) = ? Note:  Molar…

Q: You are given a 10.0 grams sample of ethanol (CH3CH2OH).   Explain how you can use the molar mass of…

A: The Avogadro’s number of any species is defined by a mole. The Avogadro’s number, NA, is equal to…

Q: A 115 g sample of dry ice, CO₂, contains how many moles? 3.22 x 103 mol 4.11 mol 28.0 mol 2.61 mol…

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Q: Calculate the number of moles of He atoms present in 6.17 g of He.

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

Q: An unknown compound contains 53.34% rhodium, 9.338% carbon, and the rest is oxygen. a) If you assume…

A: Given a compound with the composition: Rh = 53.34 % C = 9.338 % O = 100 - (53.34 + 9.338) % = 37.322…

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: 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: How many moles of P2O5 are there in 94.5 g P2O5?

A: Ratio of mass to molar mass is called as mole of substance.

Q: How many molecules are there in 12.5 g of NaOH

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

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

A:

Q: A 100.00 g sample of the compound XCl3 is decomposed to produce 90.77 g of the element chlorine.…

A: The reaction taking place will be  2 XCl3 -----> X2 + 3 Cl2  Hence moles of Cl2 formed / moles of…

Q: 3. How many potassium ions are contained in 5.62 g of potassium phosphate, K3PO4?

A:

Q: Complete the following table. Mass of Moles of Sample Molecules in Sample Total Atoms in Sample…

A: Answer shown in attachment provide in explanation box Explanation:

Q: How many moles of water, H2O, are present in 75.0 g of H2O?

A:

Q: How many NH3 molecules comprise one mole of NH3? What is the mass in grams of one mole of NH3? What…

A: In one moles of NH3 is equal to Avagadro number of Molecules of NH3  That means,  1mol of NH3 =…

Q: How many aluminum atoms are in 25.0 grams of aluminum oxide, Al2O3?

A: The formula of the given compound is Al2O3. One mole of Al2O3 contains two moles of Al atoms.

Q: Determine the number of molecules in 42.8 grams of NO₂.

A: Given 42.8 g of NO2

Q: How many molecules of NaOH are there in 20.0 grams of NaOH?

A: Atoms are made up of electrons, protons and neutrons. Protons are positively charged particles,…

Q: How many moles of atoms are present in 5 moles of Al(OH)3?

A: To determine the number of moles of atoms present in 5 moles of Al(OH)3 , we need to consider the…

Q: How many total atoms are present in 47.140 g of HCl?

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Q: How many moles of sulfur atoms are present in CS2

A: The number of moles in the given compound can be given as the number of that respective atom present…

Q: A sample of Mg(NO3)2 has a mass of 71.5 grams. how many moles of Mg(NO3)2 are in  this sample

A: Number of moles = Mass in gram/Molar mass