If 1.460 g of magnesium ribbon combusts to form 2.265 g of magnesium oxide, what is the experimental mass percent of oxygen? MgO = 40.30 g/mol Report your answer to four significant figures.

Q: How many grams of nitrogen, N, are there in a fertilizer containing 48.5 g of ammonium nitrate and…

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Q: How many grams of iron, molar mass 55.85 g/mol, will be consumed during the formation of 14.34 grams…

A: Using mole concept easily determines how much moles of  reactant are used and how much moles of…

Q: Consider a 0.336 gram sample of H20 and determine the hydrogen's mass.

A: given :-  mass of sample of water = 0.336 g  To calculate :-  mass of H in the sample of water

Q: 3) Show your calculations clearly. Suppose you are provided with a 36.55 g sample of potassium…

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Q: For numbers 20-25: Nitric acid is prepared from the reaction of 69.0 grams of nitrogen dioxide with…

A: Using stoichiometric ratio we can determine how many moles of reactant used during the reaction and…

Q: How many grams of water (18.02 g/mol) would contain 6.54x10^24 hydrogen atoms?

A: Given :Molar mass of water = 18.02 g/molNumber of H-atoms = 6.54 x 1024We need to calculate the…

Q: An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of…

A: Mass (%) of an element in compound = 100 x Mass of element/Mass of compound Number of moles =…

Q: For the following reaction: NaN3=Na+N2 if 45.0 g of NaN3 decomposed, how many grams of sodium, and…

A: The given balanced reaction is as follows, The given grams of NaN3 is converted into moles first.

Q: 8.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Assuming the molecular formula of compound is CaHbOc  And since moles = mass / molar mass Hence…

Q: Calculate mass recovered.  Calculate percent recovery.  initial mass: 2.09 g watch glass + filter…

A: The question is based on the concept of experimental calculations. we have to calculate mass…

Q: In one process, 124 g of Al reacts with 601 g of Fe2O3, what is the mass of Al2O3 formed? 2Al +…

A: The given reaction is  2Al + Fe2O3=Al2O3 + 2Fe Moles of Al =124/27 =4.6moles Moles of Fe2O3 =601/160…

Q: 10. When copper oxide reacts with hydrogen gas at high temperatures, copper metal and water vapor…

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Q: How many grams of iron are combined with 45.1 grams of oxygen to make the iron(II) oxide compound?

A: Balanced reaction taking place is as follows: Molar mass of Fe = 55.845 g/mol Molar mass of O2 = 32…

Q: 3.13 g/mol) was combusted use the information below to 20(g) + 4 NO2(g)

A: Moles of aniline = ( mass / molar mass of aniline )  Moles of aniline = ( 8.55g / 93.13gmol-1 ) =…

Q: 2.915 g of a biochemical substance containing only carbon, hydrogen, and oxygen was burned in an…

A: Empirical formula refers to the formula of a compound in which the elements are present in the…

Q: At 136°C and atmospheric pressure, the density of this gaseous chloride is5.6 g L-1. Under the same…

A: The temperature in Kelvin is calculated as shown below.

Q: If 9.05 moles of carbon monoxide is formed in the air then mass of carbon monoxide is (A) 253.49 g…

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Q: An experiment requires that enough XeOF4 be used to yield 19.2 g of fluorine. How much XeOF4 must…

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Q: How many moles of barium are contained in 112.6 g of barium?

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Q: How many grams of water vapor can be produced if you begin with 65.12 g of C3H8 and 27.34 g of O2?

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Q: What is the percent by mass of chromium (atomic mass = 52.00 g/mol) in Cr2S3 (mm = 200.20 g/mol)?…

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Q: How many grams of iron are combined with 78.8 grams of oxygen to make iron(II) oxide compound ?

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Q: How much would 2.4 x 1024 molecules of N2O5 weigh?

A: Moles=2.4*10^24/(6.022*10^23) = 4

Q: the atomic weight of magnesium is 24.3 g/mol, calculate how many magnesium atoms does 5g represent?

A: Mass of Mg = 5 g Atomic weight of Mg = 24.3 g/mol

Q: An experiment requires that enough C6H12O6 be used to yield 17.2g of oxygen . How much C6H12O6 must…

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Q: 2.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Given that the mass of CO2 and H2O formed by the burning of 2.50 g of compound X is 3.44 g and 0.94…

Q: A mixture of 197.1 g of P and 203.6 g of O, reacts completely to form PO, and P010: Find the masses…

A: Mass of O2 = 203.6 g * moles of O2 = Mass of O2 / Molar mass of O2 = 203.6 g / 32 (g/mol) = 6.36…

Q: Na +  H2O --->  NaOH +  H2 A mass of 6.2 moles of sodium reacts with an excess of water.  What mass…

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Q: Oxygen makes up 46.7% by mass of the earth's crust. How many grams of oxygen are present if a sample…

A: Given that, 46.7% by mass of the crust of earth is made up of Oxygen. It implies that every 100 g of…

Q: f 37.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?…

A: On strong heating, water molecules get removed and turn hydrated salt into anhydrous salt.The…

Q: A Freon leak in the air-conditioning system of a large building releases 12 kg of CHF2Cl per month.…

A: The ratio of the given mass to the molar mass is called as moles. Mathematically, Given, Mass of…

Q: If 8g of element Q contains 1.204 X 1023 mol-, calculate the relative atomic mass of element Q.…

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Q: Calculate the mass of water former by the complete reaction of 96.1 g of propane with oxygen

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Q: Given 88.0 grams of Boron, how many atoms of Boron (B) are present

A: To know, number of atoms, first we have to find out number of moles.

Q: How many grams of iron, molar mass 55.85 g/mol, will be consumed during the formation of 13.71 grams…

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Q: A t96 gram sample Of Silver reacts With Oxygen To form 8,56 grams of grams Of the metal cadeo What…

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Q: How many kilograms of AICI3 can be made from 150 kg of chlorine

A: The balance chemical equation for reaction of Al with with Cl2 gas is as follow…

Q: Many grams of sodium contain the same number of atoms as 10.9 g of potassium? (Dimensional analysis)

A: Given that,  Weight of potassium = 10.9 g Moles of potassium in 10.9 g = 10.9 g/39.0983 g/mol =…

Q: 1. What mass of potassium chlorate would be needed to form 56.8 g of oxygen? 2KCIO3 ----> 2KCI + 3…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: Calculate the number of atoms of iodine in a 5.25×106 g5.25×106 g sample of iodine.

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: 1.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: A 0.500 g sample of tin foil reacted with oxygen to give 0.635 g of product. (a) What is the…

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Q: Covert 2.34 x 10^24 molecules of N2 to moles

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Q: The mass in grams of iodine in a sample of BaI 2 that contains 15.7 grams of barium is

A: The moles of Barium ion is calculated as follows,

Q: Upon burning Mg in air, magnesium oxide and magnesium nitride are formed. The correct statement…

A: The question is based on the concept of experimental chemistry . We have to identify the correct…

Q: 9.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: According to the question, we need to find out the molecular formula of the hydrocarbon X.  We have:…

Q: If you have 28.9g of Lithium Nitride reacting, how many grams of just Lithium are present?

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: How many grams of lithium will combine with 21.3 g of sulfur to form the compound Li2S?

A: Given, mass of S = 21.3 g  Mass of Li2S = ?

Q: A 3.09 g sample of a compound consisting of carbon, hydrogen, oxygen, nitrogen, and sulfur was…

A: Given- Compound consist of C, H, O, N, and S mass of sample for combustion = 3.09 g mass of CO2 =…

Q: -How many grams of 03 are needed to make 3.2 g of Oxygen?

A: Given :- mass of O2 = 3.2 g   To calculate :- mass of O3 needed.