What other quantity of matter did Avogadro use to define the mole? O volume O temperature mass O density

Q: What is a mole of a substance? O alaboratory spoon full of a substance O The amount of a substance…

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Q: A sample of a compund made entirely from copper and oxygen was founf to have a total mass of…

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Q: The number of molecules in 20 moles of H2O are (take Avogadro's no. as N) O 18N O 3600N O…

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Q: 1.15g sample of sodium reacts with 0.8g of sulfur to form sodium sulfide. (MM of Na = 23 g/mol and…

A: Interpretation: From the given information, the mole ratio of sodium to sulfur in the sample and the…

Q: a sample of ammonia (NH3) Liberates 5.59 KJOF heat as it solidifies at its meining point Whar is the…

A: Given : Amount of heat liberated = 5.59 KJ And the heat of fusion of ammonia = 5.66 KJ/mol.

Q: A chromium containing compound has a formula FexCryO4 and is 28.59% oxygen by mass  Find x and y

A: Given, mass percentage of O in FexCryO4 = 28.59%Molar mass of 4 O in FexCryO4 = 4 × 16 g/mol = 64…

Q: Use the following data and steps below to calculate the formula of the copper chloride hydrate.…

A: Given: Weight of empty aluminum pan      = 0.4661 g Weight of CuCl2. x H2O sample       = 0.8390 g…

Q: Oxygen forms a number of compounds with sulfur, many of which are quite reactive. One such compound…

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Q: 3.110 The aluminum sulfate hydrate [Al2(SO4)3 ⋅ xH2O] contains8.10 percent Al by mass. Calculate x,…

A: Given: Al2(SO4)3.xH2O (100 g) contains Al by mass = 8.10 g Also, Moles of Al in Al2(SO4)3.xH2O = 2…

Q: calculate the number of moles of oxygen atoms in a 6.24g sample of aluminum nitrate, Al(NO3)3.…

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Q: e moles of a

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Q: Set up the mole ratio of CO2to O2.

A: For the general case, the atmospheric pressure is 1.00 atm and temperature 298.15 K, the volume of 1…

Q: When 7.80 mg of a compound containing only carbon and hydrogen was burned completely in 28.3 mg of…

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Q: Hydrogen gas, oxygen gas, and water vapor are collected in eudiometer. The eudiometer contains…

A: a) Moles of H2(9) =0.00206 g2 gmol=0.00103 molb) Moles of O2(9) =0.0811 g32 gmol= 0.00253 molc)…

Q: C4H10 and C6H12 are both hydrocarbons. Whic one contains higher mass percentage of carbon?

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Q: How many oxygen (O) atoms are present in a 254 gram sample of carbon dioxide (CO2) gas?

A: Since moles of carbon dioxide = mass of carbon dioxide / molar mass of carbon dioxide molar mass of…

Q: According to the following reaction, how many moles of water are necessary to form 0.442 moles of…

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Q: This organic compound consists of 54.4% carbon, C and 9.1% hydrogen, H, while the remaining percent…

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Q: What is thé mass percentage of C in codeine, C18H21NO3? Provide an answer to two decimal places.

A: Given : We have to calculate mass percentage of carbon in codeine.

Q: the table Delow: 10rtuele ROUMPMY Water H20 Two H atoms and one O atom ore (orbon otom and Carbon…

A: Given chemical compounds: Sulfur dioxide, Dihydrogen sulfide, Ammonia, Oxygen gas, Nitrogen gas,…

Q: A tank contains 325 moles of compressed helium qas. How many Helium atoms are in the tank?

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Q: before 1959, oxygen was popularly used to define the unit of mol. in 1967, the international…

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Q: o determine the number of moles of H2

A: Number of moles = mass/molar mass

Q: What are two errros that could cause one of your mass percentages to be too low?

A: Mass percent or weight percent of a component in a substance can be defined as the mass of the…

Q: Consider a 1.245 g sample of glucose (C6H12O6). Calculate the following: a. moles of glucose in the…

A: Given,  Mass of C6H12O6 = 1.245 g  (a). Number of moles of C6H12O6 = ? and  (b). Number of molecules…

Q: The molar mass is the mass of a mole of atoms. O True O False

A: Correct Ans is -  The molar mass is the mass of  a moles of atoms ---> This statement is true.…

Q: 2. The air in a flask is to be replaced with He gas in a way similar to how air is replaced in the…

A: Air is homogeneous mixture of many gases. The major component of air is nitrogen gas(78%). The molar…

Q: The number of molecules in 20 moles of H2O are (take Avogadro's no. as N) O 18N O 20/6.022*1023 O…

A: Given : Moles of water (H2O)= 20 mol 1 mol of water contains = Avogadro's number of molecules = N…

Q: Suppose 2.60 g of chlorine, Cl2, are used to prepare dichlorine pentoxide, Cl2O5. How many moles of…

A: Ans. Dichlorine pentoxide formation: (a) moles of oxygen             2Cl2+5O2 → 2Cl2O5      (2…

Q: A sample of carbon tetrachloride has a mass of 51.6 grams how many moles are contained in the sample

A: Number of moles of a substance can be determined using its mass and molar mass using the equation…

Q: What is the molar mass of magnesium phosphate? A. 310 grams / mole B.263 grams / mole C.71.3…

A: 1- First we will see the molecular formula :  Magnesium ion  : Mg2+  Phosphate ion : PO43-  Both are…

Q: A 161 g sample of MnCl₂·nH₂O yields 112 g of the anhydrous compound after heating. Determine n in…

A: A 161 g sample of MnCl2.nH2O yields 112 g of anhydrous compound after heating. We have to determine…

Q: A student calculated the number of moles of carbon dioxide present in a 100.0 g sample of a gaseous…

A: Mass of sample = 100 g Number of mole of carbon dioxide present in sample = 0.30 mol

Q: Determine the number of moles in 1.25 × 10²³ formula units of CaCl₂.

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: Defi ne the terms mole and Avogadro’s number

A: Mole concept can be used to find out the mass of the substance or the number of the particles…

Q: The following diagram represents the collection of elementsformed by a decomposition reaction. (a)…

A: a. The above diagram we can tell the empirical formula would be N atoms are in numbers of three and…

Q: 1.671g anhydrous copper (II) sulfate to moles

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Q: TReview Topics [Rererences Use the References to access important values if needed for this…

A: Moles of compound combusted = mass of compound / molar mass of compound = 10.08 / 62.07 = 0.1624…

Q: Consider the following molecule, vanillin, C9H8O3.    Claculate the molar mass of this substance.…

A: Molar mass is a sum of atomic mass of all present atoms

Q: How could you calculate the Avogadro’s number [NA] for an organic compound if you know the following…

A: Avogadro's number [NA] refers to the number of constituent particle such as atoms, molecules, ions…

Q: What are the units for molar mass? * O mol O amu O grams O amu/mol O amu/grams O grams/mol O…

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Q: Completé the föllóWing tåbles. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in…

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Q: A. Complete the following table for Ca(HCO3)2 of No. Molecules No. of No. of Grams Moles 1.53 5.27 x…

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Q: 4 NH3 (g) + 5 O2 (g) →→ 4 NO (g) + 6 H2O (l) What is the mole-mole factor (ratio) of H2O to NH3?

A: Mole ratio

Q: Caroline knows the amount of a compound in moles. To find the number of molecules in the given…

A: it was known, the amount of a compound in moles.

Q: 3. See the example in Introduction for set-up of calculations. Calculate the number of a) moles of F…

A: Number of moles of F and atoms of F in 32.5g of F2 calculated as follows

Q: what mass of ethanol and water would you need to make an 80.0g mixture containing equal number of…

A: Mass=No. of moles×molar mass⊙ molar mass of Ethanol CH3CH2OH=2×atomic⊙ mass of C+6×atomic mass of…

Q: A sample of a compund made entirely from copper and oxygen was founf to have a total mass of…

A: Given,Total mass of sample = 0.1431gMass of copper = 0.1271gThe mass of oxygen is determined as,

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".