O STOICHIOMETRY Using the Avogadro Number An oxygen atom has a mass of 2.66 x 10 - 23 g and a glass of water has a mass of 0.050 kg. Use this information to answer the questions below. Be sure your answers have the correct number o What is the mass of 1 mole of oxygen atoms? g Round your answer to 3 significant digits. How many moles of oxygen atoms have a mass equal to the mass of a glass of water? Round your answer to 2 significant digits.

Q: 6. How many grams of CoSO, are there in 100.0 g of hydrate? How many moles? What per- centage of the…

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Q: A chemist measures the amount of oxygen gas produced during an experiment. He finds that 6.63 g of…

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Q: Analyze the data for the sample to get the Empirical formula of CxHy Given data for the sample…

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Q: How many molecules of carbon monoxide, CO,  are there in 7.59 moles of carbon monoxide?

A: One mole of any substance has 6.023*e+23 molecules. It is also called Avagadro number

Q: How many oxygen atoms are in 8,80x 10-5grams LiHSOg? Hint: must use Avogadro's number Put your…

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Q: How many moles of methane, CH4, are 8.5x1024 molecules of CH4? Enter your answer as a number to two…

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Q: What is the mass of 2.41 moles of AgN*O_{3} ? Write your answer to 2 decimal places and include the…

A: Given  Moles of AgNO3 = 2.41 mol

Q: Why is the mole an important unit to chemists?

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Q: 3. Find the mass (m) of the following samples in two decimal places. a) How many grams of sodium…

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Q: Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For practice,…

A: Complete the table,NlnNlogN6.194.016-0.455

Q: A chemist adds 110.0 mL of a 1.78 M nickel(II) chloride (NiCl2) solution to a reaction flask.…

A: Molarity of the solution can be calculated by using Following formula - Molarity = mass×1000/molar…

Q: Calculate the mass in grams of 5.5000x10^18 molecules of dinitrogen tetroxide. Please write your…

A: Given that: Molecules of Dinitrogen tetraoxide = 5.5000×1018 molecules Mass of Dinitrogen tetraoxide…

Q: A chemist has two different gasohol mixtures available. One contains 20% alcohol and the other 12%…

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Q: 1-mass of crucible and lid containing magnesium oxide 2- mass of empty crucible and lid from this…

A: To determine the mass of crucible + Lid + Magnesium oxide therefore from the given data table the…

Q: What is the mass in grams of 4.57 × 10²⁵ molecules of Cl₂? I get the write and but the wrong number…

A: Mole concept: The number of molecules in one mole of chlorine is equal to the Avogadro number. The…

Q: Select all quantities whose values are exact (contains infinite number of significant figures).…

A: A number that showing perfect exactly value  , it contain infinite number of significant figure.

Q: Calculate how many liters the following number of atoms would take up. 32) 4.6 x 1035 atoms 46,214…

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Q: Calculate the number of oxygen atoms in a 100.0 g sample of vanadium(V) oxide (V,O,). Be sure your…

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Q: Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For practice,…

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Q: Chemistry 1. How many MOLECULES of xenon triox are present in 4.72 grams of this compound? [____]…

A: Number of moles of any substance can be determined by dividing the given mass of that substance by…

Q: Calculate the number of oxygen atoms in a 100.0 g sample of scheelite (Ca WO,). Be sure your answer…

A: Number of moles of a compound is equal to the mass of substance divided by its molar mass.

Q: A chemist determines by measurements that 0.0400 moles of iodine solid participate in a chemical…

A: Given, moles of solid iodine (I2) = 0.0400 mol mass of solid iodine (I2) = ? Note:  molar mass of…

Q: Use the equation to answer the questions. Round both answers to nearest whole number. Y = 51.75 1.25…

A: •Given:-    Y = 51.75 - 1.25 X •Here we have to calculate value of X for given values of Y.

Q: A) a 10.00g unknown sample with a formula of CxHY was analyzed by combustion analysis. The sample…

A: The values are given as follows:

Q: 1) bromine is a red liquid at 25 its density is 3.12 g/cm^3 what is the volume of 30.1 g og liquid…

A: The given data is as follows: The density of liquid bromine = 3.12 g/cm3 The mass of liquid bromine…

Q: Be sure to answer all parts. How many molecules of ethane (C,H) are present in 0.413 g of C,Hg? x…

A: The molar mass of ethane is,

Q: H2O + CO2 ---> C2H12O6 + O2 How many moles of CO2 are needed to make 0.065 mol oxygen? Be sure…

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Q: How many grams of LIHCO3 are present in 1.9*1o25 formula units of LIHCO3? Round your answer to 1…

A: Given information: 1.9×1025 formula units of LiHCO3

Q: How many moles of sodium chloride (NaCl) are in (7.89x10^-41) molecules of sodium chloride (NaCl)?…

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Q: Calculate the number of hydrogen atoms in a 140.0 g sample of tetraborane (B,H0). Be sure your…

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Q: How many formula units are present in 5 moles of Al2S3 ? [?] x 10 fun. Al₂S3 Make sure your answer…

A: Formula units are nothing but the number of atoms present in the particular moles of a compound. Use…

Q: ▼ Number of moles (n) of NH4Cl in 96.6 g of this substance. Express the amount in moles to three…

A: 1 moles of a substance contains 6.023×1023 molecules of that substance.

Q: Determine the number of carbon atoms in a 381 mg tablet of acetaminophen (C3H9NO2). Given: Molar…

A: Given: Mass of C8H9NO2 = 381 mg = 0.381 g                  (Since 1 g = 1000 mg) And molar mass of…

Q: Now if z is the initial mass of magnesium and y is the initial mass of aluminum, the total number of…

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Q: What is the mass percent of phosphorus in P5O2?

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Q: 1. Find the number of moles in 3.7 x 10 ^-5 g of magnesium phosphate

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Q: b. U.00004042 fng 4.042 x 10-5 mg Which sample of element is heavier? Show appropriate calculations…

A: Given: The moles of N2 = 2 moles. The moles of Fe = 1 mol. The moles of F2  = 1.5 moles.

Q: Determine the number of moles in 247.6g of Cl2? Round to 2 decimal places.

A: Given: Mass of Cl2 =247.6 g The molar mass of Cl2 =70.906 g/mol Number of moles=?

Q: A chemist needs 1.25 moles of sugar to dissolve in 1 liter of water. How many grams of sugar will…

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

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Q: What is the mass of 1 carbon atom in grams?  What is the mass of one dozen carbon atoms in grams?…

A: The number of moles can be calculated as- n=mMm=n×M where n: number of moles of the atom m: the mass…

Q: Calculate the number of boron atoms in a 50.0g sample of tetraborane B4H10.   Be sure your answer…

A: Given that,  Weight of tetraborane, B4H10 = 50.0 g Molar mass of tetraborane, B4H10 = 53.32 g Moles…

Q: A chemist measures the amount of chlorine gas produced during an experiment. He finds that 11.0 g of…

A: Given,Mass of Chlorine gas = 11.0 gAtomic mass of Cl = 35.45 g/mol.

Q: IIL Theoretical yield of chemical reactions Gaseous methane (CH4) reacts with gaseous oxygen gas…

A: When gaseous methane ( CH4 ) reacts with gaseous oxygen ( O2 ) to form gaseous carbon dioxide ( CO2…

Q: How many moles are in 1.06 x1020 atoms of iron?

A: Given :- number of atoms of iron = 1.06 x1020 atoms  To calculate :- number of moles of iron

Q: -23 An oxygen atom has a mass of 2.66 × 10 g and a glass of water has a mass of 0.050 kg. Use this…

A: Given mass of an oxygen atom = 2.66 × 10–23 g  And, mas of the glass water = 0.050 kg

Q: How many moles Fe(OH)3 are there in 286 g of Fe(OH)3? Round your answer to 2 decimals. Your Answer:…

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Q: What is the percent composition of carbon in methane, CH? Round off your answer to the nearest tenth…

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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.