Calculate the moles of C2H6 in 3.76x1023 molecules of C2 H6. Express your answer using three significant figures. ? nC,H = moles of C2 H6

Q: Calculate, to the correct number of significant figures, how many molecules of Sg are contained in…

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Q: 2.01×1022 HeHe atoms         Express your answer using three significant figures.    How many moles…

A: We have to calculate the number of moles of He

Q: A compound is 40.0% C, 6.70% H, and 53.3% O by mass. Assume that we have a 100.-g sample of this…

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Q: What mass of hydrogen gas could be produced from the reaction of 25.5 g of urea and 25.5 g KOH? Give…

A: The given mass of urea = 25.5 g The given mass of KOH = 25.5 g The mass of hydrogen gas produced = ?

Q: moles

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Q: How many moles are in 44.0 g of Al₂(CO3)3? Be sure to answer all parts. Enter your answer in…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Thus,

Q: PROVIDE THE CORRECT SHORT ANSWER IN THE BOX FOR THE DESCRIPTION BELOW - How many atoms or molecules…

A: The question is asking for the number of atoms or molecules in one mole of a substance. This is a…

Q: Water has a molar mass of 18.0 grams H2O per mole of H2O. How many moles of H2O are in 9.00…

A: Note: 1000 mg = 1 gmass of H2O = 9.00 milligrams = 0.009 gramsmolar mass of H2O = 18.0…

Q: - Why do we use the "mole" in chemistry. How does it relate to the periodic table? a) What is the…

A: The relationship between mole and mass is as follows:       Mole = Mass Molar mass ⇒Mass =…

Q: which of the samples have the large numbers of molecules H2S04 ? (Atomic mass H = 1, O=16 S= 32) * O…

A: Given data, Atomic mass of H = 1g/mol Atomic mass of O = 16 g/mol Atomic mass of S = 32 g/mol

Q: What is the mass (in grams) of 9.43 x 1023 molecules of sucrose (C12H22O11)? First determine the…

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

Q: Please assist with number 3

A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…

Q: What is the molar mass of C7H1004? Express your answer in units of grams per mole. Provide your…

A: Given  Formula of compound = C7H10O4 Molar mass = ?

Q: How many grams of Al2(CrO4)3 (HINT: F.M. = 401.96) would be required to obtain 12.00 g of…

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Q: What is the mass of 1.11 x 1021 formula units of KBr?

A: 1 mole = 6.022x 1023 molecules or atoms  mole (n) = Mass / molar mass   Mass = mole x molar mass

Q: Regular treatment with low dose aspirin is used to help prevent cardiovascular disease. How many…

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Q: 1. How many significant figures are in the number 0.0840900? Write the following number in standard…

A: Zero between digits is significant Zero left to decimal is non significant Zeroes just after decimal…

Q: How many moles of CH4 are in 9.37 x 1023 molecules of CH4? Do not put units in your answer. Report…

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Q: In one reaction, 0.308 moles of SiCl4 is produced. How many miles of molecular chlorine were used in…

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Q: The number of hydrogen atoms in a mole is Avogadro’s number, 6.02 * 1023. If one mole of the gas has…

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

Q: Selenium dichloride, SeCl2, has a molar mass of 149.86 g/mol.  What is the mass in grams of 0.325…

A: Given, moles of SeCl2 = 0.325 moles molar mass of SeCl2 = 149.86 g/mol mass of SeCl2 = ?

Q: Assume that the ratio of moles of Cl to moles of Cu are 2.7.  If we can represent the formula by…

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Q: How many moles of carbon atoms are there if there are 7.13 x 1023 atoms? Calculate your answers to 3…

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

Q: This is the chemical formula for nickel tetracarbonyl (a powerfully poisonous liquid used in nickel…

A: In balanced chemical equation number of atoms of each elements are equal on both reactant and…

Q: What is the mass percent of silicon dioxide (SiO2) if you are able to separate 2.202g out of a…

A: The mass percentage of a compound in a mixture is equal to the ratio of the mass of that compound…

Q: Aluminium has a density of 2.70 | g/cm3 . How many moles of aluminum are in a 13.2 cm3 block of the…

A: Density :- Density of a substance is its amountof mass per unit volume . So , density is the…

Q: Ascorbic acid, commonly known as Vitamin C, cannot be produced by the body. It has a chemical…

A: Step 1:To calculate the mass of 0.0325 mol of ascorbic acid (Vitamin C), we first need to determine…

Q: The molecular formula of remdesivir is  C27H35N6O8P.  How many oxygen atoms are in 7.9739 moles of…

A: Given: Moles of remdesivir = 7.9739 moles

Q: 1: How many carbon atoms are present in a mole of ¹2C? 12 Express your answer using four significant…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: How many moles (of molecules or formula units) are in each sample? 0.2011 g C8H18 Express your…

A: Given, mass of C8H18 = 0.2011 g Molar mass of C8H18 = 114.23 g/mol

Q: 2 NH3 + 3 CuO --> 3 Cu + N₂ + 3H₂O In the above equation how many moles of N₂ can be made when 190.1…

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Q: 143.50g

A: This question is related to mole concept.

Q: Which of these are correct/ true?  A. 1 mole of He has the same amount of atoms than 1 mole of Ca B.…

A: There are some correct statements where are written with explanatios.

Q: molecules

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Q: Glycine is an amino acid with the formula C2H5NO2. The numbers above are subscripts actually…

A: Please find your solution below : Amino acids are the organic compounds that serve as building…

Q: How many moles of S are in 23.6 g of allyl sulfide (C3H5)2S? Express your answer to three…

A: Step → 1              Given,                            mass of aluye sulfide (C3H5)2 5 = 23.6 g…

Q: If you have 5.94 x10e24 molecules of SO3. How many moles of SO3 would you have? round your answer to…

A: Given data, 5.94 x1024 molecules of SO3

Q: A chemist measured out 8.25 g of copper(II) bromide tetrahydrate (CuBr2 ·4 H2O). How many moles of…

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Q: 5. a) How many moles is 12.04 x 10 molecules of CaCO,? b) What is the mass of this many moles?

A: Since we know that   1 mole of any substance = 6.022 × 1023 molecules of that substance. And  Number…

Q: Florasulam is an herbicide with the chemical formula C12H8F3N5O3S. Answer the questions below…

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Q: 2 NH3 + 3 CuO --> 3 Cu + N₂ + 3H₂O In the above equation how many moles of N₂ can be made when 170.6…

A: Given equation,  2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2O Molar mass of N2 = 14+14 = 28 g.mol-1 Molar mass…

Q: 39. Convert 2.001x102 formula units of Ba3(PO4)2 to mass, in grams, of Ba3(PO4)2. Mass of Ba3(P04)2:

A: Avogadro's number equals to the moles of that substance which can be used to find its mass if its…

Q: Calculate the mass of chlorine atoms in 5.0x1020 molecules of iodine trichloride, ICl3. Mmass ICl3 =…

A: molar mass of ICl3 = 233.26 g/molMolecules of ICl3 = 5.0*1020 moleculesAtomic mass of Cl = 35.45…

Q: Calculate the number of moles in each sample. 74.9 g HCCl3 Express your answer with the…

A: Given samples,    74.9 g HCCl3    10.7 g C6H12O6    28.4 kg C2H4    22.6 g of dinitrogen monoxide

Q: A74.12 g sample of a hydrocarbon (CH) has a mass of carbon that is equal to 62.90 g. Given this…

A: To find out the empirical formula, first we need to find out the moles of C and H. Round off that…

Q: A compound is 25.0% carbon, 8.4% hydrogen and 66.6% sulfur by mass. Put symbols in order of CHS.…

A: Given Data:% of Carbon = 25.0 %% of Hydrogen =8.4 %% of Sulfur = 66.6 %To determine:Empirical…

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.