A compound is known to contain 65.44% carbon and 19.36% oxygen by mass. Each molecule contains two atoms of oxygen. What is the molar mass of this substance? How many carbon atoms are there in the molecular formula for this compound? (It should be a whole number, no units)

Q: The ratio of each element's mass in a compound changes when the size of the sample changes.

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Q: i. How many atoms of oxygen are in 8.1 g CO,? j. How many atoms of hydrogen are in 5.0 g NH3?

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Q: Write the correct chemical formula for the following compounds and molar mass. calcium sulfide:…

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Q: The empirical formula of a group of elements is:      a. The simplest whole number ratio of atoms…

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Q: Explain the Convert between grams of a compound and grams of aconstituent element ?

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Q: A given sample of a xenon fluoride compound contains molecules of a single type XeFn , where n is…

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Q: How many total atoms are in a sample of 10.0 grams CH4?

A:

Q: In order to think about the mass of a mole of a compound, we must know the formula mass of the…

A: Given: a) Formula mass = 74.096 amu b) Molecular mass = 74.096 amu c) Molecular weight = 74.096 amu…

Q: How many moles are there in a copper wire that was a mass 10.000 g?

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Q: An aspirin tablet contains 325.0 mg of aspirin, which has the molecular formula, C9H8O4. How many…

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Q: An organic compound has a molecular mass of 329.0 amu and contains 72.95% carbon by mass. How many…

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Q: A beaker contains 48.948.9 mL of carbon tetrachloride (CCl4CCl4, density is 1.591.59 g/mL).…

A: Volume of carbon tetrachloride = 48.9 mL  Density = 1.59 g/mL  Density = mass ÷ volume

Q: ent in that c

A: Three conversion factors in order are: Convert grams of aspirin to moles of aspirin convert moles of…

Q: A sample of glucose, C6H12O6, contains 1.250 x1021 carbonatoms. (a) How many atoms of hydrogen does…

A: a).

Q: Imagine that a significant portion of your copper oxide sample (Red copper oxide or black copper…

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Q: What is the mass of carbon in grams found in one molecule of the compound C7H8O4?

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Q: Vitamin C has the formula C6H8O6. Calculate the number of vitamin C molecules present in a 0.250-g…

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

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Q: In order to convert between the number of molecules of a compound and the number of molecules…

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Q: Iron is found in Earth's crust as several iron compounds. Calculate the mass in kilograms of the…

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Q: What is the relationship between the mass of a compound and the number of moles it represents?

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Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

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Q: A chemist has one mole of an unknown molecule. The mass of this sample is 184.1 grams. After doing…

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Q: Which statement BEST describes why we use moles when measuring quantities of atoms and molecules? O…

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Q: The chemical formula for diethyl amine is: (CH,CH,), NH Calculate the molar mass of diethyl amine.…

A: Atomic mass of carbon : 12.0107 u  Atomic mass of Hydrogen : 1.007844 u  Atomic mass of Nitrogen :…

Q: How many molecules are there in 1,975.0 g of table sugar, sucrose, C12H22011?

A: Given,  1975 g of table sugar, C12H22O11

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Q: the mass, in grams,

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Q: True

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Q: Calculate the mass, in grams, of 402 atoms of lithium, Li

A: Number of moles = number of atoms/6.022 x 1023 atoms  Mass = moles x molar mass

Q: explain why the number of atoms and moles are different when the volumes are nearly identical?

A: 1. The table contains the data required to solve this problem.

Q: 4. Does 1 g of hydrogen molecules contain as many H atoms as 1 atoms? of hydrogen

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Q: Sucrose has the molecular formula C12H22O11. If a sucrose sample contains 3.6 x 1024 atoms of…

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Q: 4. A sample of acetic acid has 4.22x1024 molecules. How many grams of hydrogen are present?

A:

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.