How many atoms are in 1.50 moles of helium (He)?   a 2.50 x 1022 atoms He  b 9.03 x 1023 He atoms   c 2.50 x 10-24 atoms He  d 903

Q: 15. How many O atoms are in 2.00 g Al₂O3 ? Al = 26.98 g/mole, O = 16.00 g/ mole 3.54 x10exp22 O…

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Q: )2.709 x 10 to the 23rd Ca+2

A: Given,  0.45 moles CaCO3 1 mole CaCO3 contains 1 mole Ca2+ ions.  0.45 moles CaCO3 contains = 0.45…

Q: ow many fluorine atoms would it take to make up a mass of2.83×10—22 g?   25 atoms    None of the…

A: Given data, Mass of F = 2.83 x 10-22g Data taken from google; Molar mass of F = 18.998 g/mol

Q: What number of atoms of nitrogen are present in 3.54 g of each of the following? a. glycine: C2H5…

A: Given, Calculate the number of atoms of Nitrogen are present in 3.54 grams of each of the following:…

Q: 3) Avogadro's number is most simply A) 6.02 x 1023 amu in 1 mole of a substance. B) 6.02 x 1023…

A: The number of units in 1 mole of a substance is known as Avogadro's number. And the value of…

Q: Find the number of moles of the indicated element a) 9.75 g of B2O3 b) 187.2 mg of Na2B4O7 . 10H2O…

A: Given data is as follows: (a) The mass B2O3 given = 9.75 g The moles of substance can be calculated…

Q: How many moles of oxygen are in 6.75 grams of oxygen?     A. 0.42 moles B. 1.60 moles C. 0.21 moles…

A: Given  values are, Mass of oxygen = 6.75 g We know molar mass of oxygen O2 = 31.998g/mol

Q: Q2 (6 points) 2) Complete all parts of the following: (Consider significant figures in this section…

A: 1 mole of Barium has Avogadro's number of atoms in it Avogadro's number = 6.022x1023 1 mole of…

Q: 5.If.you have 632.grams.of.sugar how.many.moles do yau have?. C2. Hz2 O 6. How many grams do you…

A: Molar mass of Fe = 55.84 g/mol Molar mass of H2O = 18.0 g/mol

Q: 23. How many oxygen atoms are in 1.50 mol of SO3? a. 7.71 x 1021 atoms b. 1.12 x 1022 atoms c. 3.01…

A: 1- First we will determine the moles of oxygen in SO3 : 1mol of SO3 have = 3mol of oxygen atom…

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: 0.6 moles of strontium phosphate contains how many oxygen atoms?     A. 0.8 NA   B. 2 NA   C.…

A: Answer: Molecular formula of Strontium Phosphate: Sr3(PO4)2

Q: 5.Starting from 7.2 moles of Potassium Dichromate, How many ions of (Cr2O7)-2 are there? a) 5.06 x…

A: Given that, 7.2 moles of  Potassium Dichromate are peresent. To find: the number of ions of…

Q: łow many C atoms are in 5.50 g of C? O 2.76 x 1023 c atoms 5.01 x 1022 C atoms 3.31 x 1024 C atoms…

A: Given, mass of C = 5.50 g Molar mass of C = 12 g.mol-1

Q: : How many atoms of oxygen are in 3.52 moles of calcium nitrate? A. 1.91 x 10^25 atoms O B. 2.12 x…

A: E. 1.27×1025 atoms of Oxygen Given that,  Moles of Ca(NO3)2   = 3.52 mol Moles of Oxygen in 3.52 mol…

Q: if you have 120 grams of lead (111) nitrate, how many moles of lead (11) nitrate would that be using…

A: For Pb(N03)2 :  Mass, m = 120 g Molar mass, M = 331.2 g mol-1 Number of moles, n =?

Q: How many grams of sodium carbonate contain 1.773 x 10 17 carbon atoms? (A) 6.066 x 10-5 B 1.011 x…

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Q: How many oxygen atoms are present in 3,0 x 1023 molecules of Ca(NO3)2?   A. 6.0 x 1023   B. 1.5…

A: 1 molecule of Ca(NO3)2 have 6 oxygen atoms as NO3 have 3 oxygens and (NO3)2 will have 3 x 2 = 6…

Q: 3. Which of the following is equal to one mole of calcium atoms? a 6.022 x 1022 atoms of Ca b 6.022…

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Q: How many atoms are in 5.00 moles of O? 3.01 x 1024 atoms 2. 4.52 x 1024 atoms 3. 1.51 x 1024atoms 4…

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Q: How many atoms or ions of each element are in 164.5 g of the following substances?   (a) H2       ×…

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Q: How many moles of gold do you have in a 2 gram gold nugget? MM=197 g/mol   1.02x10^-2 mol…

A: Mole can be defined as the standard unit for measuring large quantities of very small atoms,…

Q: Which would contain 9.03 × 1023 oxygen atoms? Avogadro Constant = 6.02 × 1023. 3.0 mol H2O   0.75…

A: This problem can be solved by knowing that one mole of substance consists of 6.022×1023 particles.

Q: How many oxygen atoms are there in 3.15 g of Al2(S208)3 (MW AI2(S208)3 = 330.34 amu) O a. 3.01 X…

A: Given that : Molecular weight of Al2(S2O8)3 = 630.34 amu or g/mol Mass of Al2(S2O8)3 = 3.15 g Number…

Q: 2. Sulfur is one of the ingredients used in gunpowder. How many atoms are in 24 grams of sulfur? (Ar…

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Q: How many moles of atoms are contained in 12.4 g CH4? Group of answer choices 198 moles 0.773 mole…

A: 1) How many moles of atoms are contained in 12.4 g CH4?

Q: How many oxygen atoms are there in 2.10 g of Al2(S208)3 (MW A12(S208)3 = 630.34 amu) %3D O a. 4.82 X…

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Q: In 7.2 moles of Potassium Dichromate, K2Cr2O7. How many atoms of O are there?

A: Given :- number of moles of K2Cr2O7 = 7.2 mol  To be calculated :- number of O atoms

Q: When ammonia gas, NH3, and oxygen gas, O2, react to form nitrogen gas and water, for each mole of…

A: For the 1st question: Given statement: When ammonia gas, NH3, and oxygen gas, O2, react to form…

Q: I. N203 containing 0,6 mole oxygen atoms. II. CO2 containing 6 grams of carbon III. C2H4 containing…

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Q: How many helium (He) atoms are there in 3.75 moles of helium?   3.75 x 1023 atoms 3.99 x 1025 atoms…

A: You have given - Moles of He = 3.75 mol

Q: 16) What is the mass of 4.9 moles of N2O5?   a.   0.5292g   b.   52.92g   c.   5.292g…

A: One mole of any species contains its molar mass and one mole of any species contains avagadro number…

Q: Answer the following questions on Avogadro's Number and the mole. (SHOW WORK step by step and round…

A: Mole concept: According to the mole concept, the number of molecules or atoms present in one mole of…

Q: What element has 3.63*10^23 atoms in 6.52 g of material

A: Given, No of atoms in the element = 3.63×1023mass of element = 6.52 g

Q: How many atoms of C there in 98.2 grams of Bi(C2H3O2)3 (MW = 386.1125)

A: Given, mass of Bi(C2H3O2)3 = 98.2 g molar mass of Bi(C2H3O2)3 = 386.1125 g/mol Number of C atoms = ?

Q: How many atoms of oxygen are in 3.52 moles of calcium nitrate?   Select one: a. 8.48 x 10^24 atoms O…

A: Mole is defined as the ratio of given mass and molar mass. The unit of mole is mol. It is utilized…

Q: How many atoms are in 5.80 moles of He? 4.00 1.03 ×× 1023 6.02 ×× 1023 3.49 ×× 1024 none of the…

A: Given information: Moles of helium atom = 5.80 mol

Q: How many atoms are in 15.6 grams of silicon? group of answers 0.555 2.64 x 10^26 3.34 x 10^23 438…

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Q: How many molecules are in 98.70 grams of Ba (SO4)?   A. 2.5 x 1023 molecules Ba (SO4)   B. 0.6 x…

A: Molar mass of BaSO4 = 233.38 g/mol  Mole = given mass/molar mass

Q: Find the number of moles of the indicated element a) 9.75 g of B2O3 (B) b) 187.2 mg of Na2B4O7 .…

A: A numerical problem based on mole concept that is to be accomplished.

Q: Which of the following compounds contains the largest number of atoms?

A: 1 mol = 6.022 × 1023  atoms   We can calculate moles of each atom in a mole of compound. For example…

Q: How many atoms are there in 3.33 moles of strontium? * 2.00 x 1024 atoms * 3.21 x 1032 atoms * 1.11…

A: GivenMoles of strontium = 3.33 moles Molar mass of strontium = 87.62 g/moleNo of atoms in 3.33 moles…

Q: True or False? True v The mass of 2 moles of sodium is > 23 g. False v The mass of one mole of…

A: Given,

Q: A sample of Al2(SO4)3 contains 11.2 g of oxygen, find the number of moles of Al2(SO4)3   0.0740 mol…

A: Given,  Sample of Aluminium sulphate Chemical formula of Aluminium sulphate = Al2(SO4)3 Mass of…

Q: Which of the following has the highest total number of atoms? Select one: a.2.6 moles of Ca(OH)2…

A: 1 mol  = 6.022 × 1023 atoms

Q: How many fluorine atoms are in 3.2 moles of SF? O 6.02x1024 atoms O 1.16x1025 atoms O 1.44x1024…

A: Moles of SF6 = 3.2 moles We need to determine number of F atoms.

Q: sample of propane, C3H8 C 3 H 8 , contains 11.5 moles m o l e s of carbon atoms. How many total…

A: C3 H8 contains 3 carbon and 8 hydrogen . So 1 mole contain 11 mole of atom.

Q: a. How many moles are in 8.5x1022 atoms Xe? b. How many moles are in 7.4×10 atoms Cu? c. How many…

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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.