One mole of particles of any substance contains is:   a. 3 x 10-10particles     b. 106particles     c. 6.02 x 10-23 particles     d. 3 x 10-10 particles     e. 6.02 x 1023particles

Q: Which of the following has the most moles of substance? a. 10.0 g He b. 5.0 x 10²³ atoms Ne c.…

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Q: 6. What is the percent by mass of nitrogen in ammonium carbonate? a. 14.53% b. 27.83% c. 29.16% d.…

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Q: The composition of a commercial cold remedy mixture is 87% aspirin, 7% caffeine, 6% vitamin C. What…

A: Mass of mixture that contains 5 g Caffeine = ? % of aspirin = 87 % % of caffeine = 7% % of vitamin C…

Q: The number of moles of S in 2.8 x 1024 atoms of S is: 1.0 mole of S atoms 4.6 moles of S atoms 3.1…

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Q: How many moles of nitrogen monoxide can be made from 10.18 moles of nitrogen dioxide? nitrogen…

A: Given, Moles of NO2=10.18 moles  Moles of NO= ?

Q: inside the front cover of this book to calculate the mass in grams of each of the following samples.…

A: Note : As per our guidelines we are supposed to answer only first 3 subparts of first question.

Q: 0.4 moles of calcium carbonate contains how many carbon atoms?     A. 1.2 x 1023   B. 4.8 x…

A: The formula of calcium carbonate = CaCO3  Molecular weight of CaCO3 is 100 gm/mol  1 mole CaCO3 =…

Q: The molar mass for F e (C O 3 ) is: A. 251.4 grams/mole B.115.8 grams/mole C.139.8 grams/mole D.83.8…

A: We have given that  The molar mass for Fe(CO3) is: A. 251.4 grams/mole B.115.8 grams/mole C.139.8…

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: 41.  0.8 moles of ferrous phosphate contains how many oxygen atoms?   A. 3.2 x 1024      B.…

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Q: One mole of H₂O contains O a.3.0 1023 hydrogen atoms O b. 1.2 1024 hydrogen atoms c. 6.02 1023…

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

Q: How many moles are in 7.82 g of aspartame? C14H18N2O5   A. 0.2569002 grams C14H18N2O5   B.…

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Q: What is the molar mass of Ba (SO4)? A. 233.3 grams/mole B.329.3 grams/mole C.185.3 grams/mole…

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

Q: A 0.82 gram sample of impure aluminum carbonate liberated carbon dioxide gas when HCI was poured…

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Q: 41) How many molecules of water are present in 54g of water?   A. 1.8x1024   B. 12x1023   C.…

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Q: Which sample has the largest number of oxygen atoms? a. 3.0 mol H20 b. 2.5 mol of CO2 c. 2.0 mol of…

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Q: When the following equation is balanced correctly, what is the coefficient in front of Ba(NO3)2?…

A: Steps on how to use the trial and error method to balance the chemical equations:Write the…

Q: Calculate how many minutes it would take you to place 4.9 moles of carbon atoms on a paper if you…

A: Given : Moles of carbon atoms= 4.9 moles 0.0015 moles in 6 minutes are taken on a paper.  To find:…

Q: A compound is 36.9% nitrogen and 63.1% oxygen. What is the empirical formula of the compound? s is…

A: To determine the empirical formula of the compound, we need to find the simplest whole-number ratio…

Q: What is the mass in grams per mole?

A: Information about the question

Q: How many moles are in 114.58 grams of Ba (SO4) A. 0.72 moles Ba (SO4) B. 18,290.4 moles Ba (SO4)…

A: Number of moles of substance =(mass given)/(molar mass) ----(1) Given data:  Mass of BaSO4…

Q: How many bananas are in 0.10 moles of bananas?

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Q: You have a beaker containing 325.9mL of H2O and 14.55g of CaBr2. Calculate the mass percent.

A: Mass percentage ( % w/W ) :  mass of solute in grams present in 100 mL of solution is called mass…

Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: Match the correct number of nitrogens with the correct situation that you see below v 2 NH4NO3 A. 4…

A: Count the no. of N' atom by simply multiply by its coefficient.

Q: Write the chemical formula for each compound, and then calculate the amount in moles in each sample.…

A: Given Mass of indium carbonate = 19.2 mg

Q: What is the molar mass for the Dinitrogen Trioxide?   A. 30.0 grams/mole   B. 150.0 grams/mole…

A: Since we know that the molar masses of nitrogen and oxygen are 14.0067 g/mol and 15.999 g/mol…

Q: 4.0 g of oxygen contains   A. 0.025 molar masses   B. 4.0 molar masses of oxygen   C. .02 x…

A: Here there is Oxygen atom so atomic mass is 16 g mol-1.

Q: How many particles are in 1.80 mol of sulfur trioxide gas? O a. 144 O b. 115.2 O c. 1440

A: Given information,  1.80 mol sulfur trioxide

Q: How many grams of Se are there in a sample of Se that contains the same number of moles as a 65.8…

A:

Q: 1. Determine the percent composition of the following: a. A scientist analyzes a 50.0g sample and…

A: Here we are required to find the percentage composition.

Q: How many molecules are contained in each of the following number of moles? a. 2.5 mol of penicillin…

A: 1 mole of a substance contain Avogadro's number of molecules.

Q: What is the empirical formula for the compound formed in previous problem?   Cr I Mass of element…

A:

Q: How many moles of sulfate ions (SO,2) are present in 0.30 mol of aluminum sulfate? A. 0.10 mol B.…

A: Al2(SO4)3 is a salt and readily dissociates in water forming following ions as shown below in the…

Q: How many moles of tungsten atoms are in 4.8 x 10^24 atoms in tungsten. a. 8.0x10^0 moles b.…

A: Given: No. of tungsten atoms =  4.8 x 1024 atomsRequired: no. of Moles of tungsten= ?

Q: The formula of cupric sulfate is? A. Cu(SO4)2 B. CuSO3 C. CuSO4 D. Cu(SO3)2 Q2: A silicon chip has a…

A: Cupric means copper in +2 oxidation state and the chemical formula of sulphate ion is SO42-

Q: B3b. MOLES OF SALT Set 1 Set 2 Half mass Set 1 Half mass Set 2 Salt moles (mol) 3 3 3 3 (Unrounded)…

A: Given that : We have to calculate the moles of the salt used for the given data :

Q: If a bucket holds 2.00 lb of NaOH, how many gram moles of NaOH does it contain?  A. 10 B. 15.6 C.…

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Q: Quantity 1. Mass of crucible + cover 2. Mass of crucible + cover. Magnesium 3. Mass of Magnesium 4.…

A: Empirical formula: The formula in which the simplest whole number ratio of constituent atoms ( that…

Q: How many entities are present in each of the following? a. 8.44 mol argon atoms b. 1.1 x 10-¹2 mol…

A: For any substance, . In all the questions moles are given. Thus, the number of atoms can be…

Q: 3 The density of liquid benzene, C,H, is 0.879 g/cm at 15 °C. How many moles are there in 36.5 mL of…

A: Given that:  Density of benzene = 0.879g/cm3 Volume of benzene = 36.5mL  Using the formula of…

Q: Calculate the percent by mass of each element in the following compounds. a. Methane, CH4 b.…

A: Percent by mass is simply the ratio of atomic mass of element present in compound to total molar…

Q: How many bananas are in 0.10 moles of bananas? 3.0 x 1023 3.0x 10 21 6.0 x 1022 6.0x 1024

A: Given,  Moles of bananas = 0.10 moles To find, molecules of bananas??

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.