How many moles of propylene (C3H) are in 25.0 of the substance? g

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

A:

Q: How many moles of N₂H4 are in 3.94 x 1022 molecules?

A: N2H4 is called as hydrazine. It is a hydride of group-15 elements.

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

A:

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

A:

Q: How many moles and molecules are in 631.9 g Al2(SO4)3?

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Q: e empirical formula and the molecular formula

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

A:

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: Consider a 6.38 mol sample of C5H8. How many atoms of H would be in this sample?

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Q: 7. Determine the empirical formula of a compound whose composition is 50.1% S and 49.9% O.

A: Convert the mass percent to grams : Thus 100 g sample of above compound contain 50.1 g Sulphur(S)…

Q: Calculate the total number of oxygen ATOMS in 1.926 g of magnesium perchlorate.

A: The total number of atoms available in the molecules of any particular substance is referred to as…

Q: Consider a sample of aluminum nitrate that contains 1.72 × 10²⁴ atoms of nitrogen. Determine What…

A:

Q: 22. The molar mass of Ba (NO3) 2 is?

A: In this question we need to calculate the molar mass of Ba(NO3)2 we know the molar mass of…

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: A 2.86 g sample of a compound consisting of carbon, hydrogen, oxygen, nitrogen, and sulfur was…

A: Given, mass of 2.86 g sample of a compound produced 1.61 g CO2 and 0.989 g H2O.Moles of CO2 and H2O…

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

A:

Q: Determine the percent composition by mass of all elements in NCl5.

A: Mass percent can be defined as the mass of an element divided by the mass of compound which is then…

Q: 7. Calculate the number of Al atoms in 50.0 g of Al(BrO3)3.

A: The number of atoms of aluminium in Al(BrO3)3 is calculated as,

Q: Holy many moles of CO2 are contained in 42.0 x 1024 molecules of CO2?

A:

Q: a. How many molecules of carbon dioxide are present in 4.99 moles of this compound? molecules 22 b.…

A: 1 mol = 6.022 x 1023 moleculesThus,1 molecule =  mol

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: 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: Part D. A 28.50 g sample of a compound of carbon, sulfur, hydrogen, and combusted (burned). 35.25 g…

A:

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: Phosphorus (P) is element 15 on the periodic table. A sample contains 3.32x1025 atoms of P.…

A: For phosphorous (P) Atomic number of phosphorus = 15 Given,Sample of phosphorus contains = 3.32 ×…

Q: 9. Calculate composition the mass percent of Mg(BrO3)2

A: To calculate the mass percent composition of Mg(BrO3)2 (magnesium bromate), we need to determine the…

Q: 8. How many grams are in 2.55 x 1024 molecules of KCI?

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Q: 7. x = 4 atoms 1 mole 6.02 x 1023 atoms 23g 1 mole

A: The conversion of quantity from one unit system to another unit system is known as unit conversion.…

Q: 2. How many MOLES of fluorine are present in 2.68 grams of carbon tetrafluoride ? moles.

A: The given information is: Mass of carbon tetrafluoride = 2.68 g Chemical formula of carbon…

Q: A 4.00 g sample of a hydrate of nickel(III) bromide looses 0.793 g of water when heated. Determine…

A: It is given that the mass of hydrate of nickel (III) bromide is 4 gOn heating it losses 0.793 g of…

Q: 2. Chemical analysis of an ether shows 64.82% C, 13.60% H, and 21.58% O by mass. Determine the…

A: Given :- % C =64.82 % H =13.60 % O = 21.58 So, Grams of carbon = 64.82 g Grams of Hydrogen = 13.60 g…

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

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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: Calculate the number of atoms in 2.50 mg of Mg

A: We have been given mass of Mg = 2.50 mg and we have been asked to calculate the number of atoms in…

Q: 5. Calculate the number of oxygen atoms present in 755.0 mg of nitrogendioxide gas.

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Q: Determine the number of hydrogen atoms in one mole of H₂O2. 3.01 x 1023 2.408 x 1024 5.2 x 1022 6.02…

A: An atom is a particle that contains protons and neutrons and is surrounded by electrons.

Q: How many silicon atoms (Si) are contained in a 12.5 g sample of silicon? Molar Mass of Si = 28…

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Q: . Find the percent composition of each element present in Fe203?

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Q: A.How many molecules of nitrogen trifluoride are present in 2.13 moles of this compound?   B.How…

A: To convert molecules to mole divide by 6.02×10^23 and to convert moles to molecule multiply by…

Q: Determine the number of molecules in 22.8 grams of NO₂.

A:

Q: Determine the mass, in grams, of 0.400 moles of Si (1 mol of Si has a mass of 28.09 g).

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Q: 3.2*10^24 atoms O to molecules O3

A: A molecule is composed of two or more than two atoms. The number of molecule can be determined by…

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.