A) Calculate the percent of oxygen by mass in iron(III)oxide. B) Calculate the number of grams of iron(III)oxide that contains 20.0g of oxygen

Q: Determine the number of oxygen atoms present in25.0 g of carbon dioxide.

A: From given data  Mass of carbon dioxide (CO2) = 25 g  Also,  Molar mass of carbon dioxide = 44…

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

A:

Q: 24 2) How many moles are equal to 4.79X10 molecules of CO?

A: Here, we need to solve the Second Question. Therefore, the answer to the Second Question is given by…

Q: Determine the number of atoms in 30.0 g of Ne.

A: One mole of any species contains avagadro number of atoms, molecules and ions.

Q: number of atoms in 37 g of vanadium

A:

Q: Determine the number of atoms of O 10.0 of CO2.

A: Since each molecule of CO2 has 1 atom of C and 2 atoms of O  Hence each molecule has total number of…

Q: Wwhat is themassin grams of one mole of sulfur? (round to 3 sig figs)

A: The question is based on mole concept. we have to write mass of 1 mole of sulphur atoms.

Q: Determine the number of atoms of O in 10.0g ofCO2.

A:

Q: Calculate the following: 1. Mass of 4.3x10mol of lead 2. Mass of 3. 8x10 antimony atoms 3. Number of…

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Q: What is the % composition of chlorine in KCI?

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Q: What mass of ammonia gas (NH3) contains 2.8*10^24 hydrogen atoms?

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Q: Calculate the mass of diphosphorus pentoxide (P2O5) that contains a million (1.0x1023) oxygen atoms.…

A:

Q: Find the percentage of mass of sodium (Na) in Na2s if it is 32.1%  sulfur (s) by mass.

A: The percentage of mass of an element in a compound is calculated by the formula,

Q: Find the empirical formula of a compound, given that the compound is found to be 47.9% zinc and…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: Number of atoms of C in 17 moles of C4H10 are: O 24.09x10^23 7.06x10^23 O 409.50x10^23 102.37x10^23

A: Number of atoms of carbon  = carbon atoms × moles × NA

Q: A substance has a molecular mass of 143151 u. Find the mass of one molecule of this substance.

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

Q: Number of atoms of C in 16 moles of C,H10 are: O 6.64x10^23 385.41x10^23 O 24.09x10^23 O 96.35x10^23

A:

Q: How many MOLES of dioxygen difluoride are present in 4.95×1022 molecules of this compound ?

A: We have to calculate the moles of dioxygen difluoride .

Q: Br A) What is the molecular formula for this compound? B) What is the empirical formula for this…

A: A Molecular formula  represent the total number of atoms of each element in each molecule of a…

Q: Calculate the number of nitrogen atoms in a 70.0 g sample of dinitrogen tetroxide (N,0.).

A: Given :- mass of N2O4 = 70.0 g  To calculate :- number of nitrogen atoms

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

A: Percent by mass = (mass of given component/total mass of sample) × 100%

Q: 0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a…

A: In this question, we want to determine the moles of Nitrogen gas. How we can determine, you can see…

Q: The average nicotine (C10H14N2) content of a Camel cigarette is 1.93 mg. Suppose an individual…

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Q: 1 mol of ibuprofen, C13H18O2, contains how many mol of atoms?

A: The molecular formula of ibuprofen is C13H18O2  Hence from the formula we can see that 1 molecule of…

Q: Aluminum oxide (Al2O3) occurs in nature as a mineral called corundum, which is noted for its…

A: The density is stated as mass per unit volume. Mathematically, it is represented as follow: d = m/V…

Q: In contrast, a liter of water contains 55 moles of water.  How many water molecules are in a mole?

A: Number of moles of water = 55 moles

Q: Analysis of a sample showed that it contained 68.3% lead, 10.6% sulfur, and 21.1% oxygen. What is…

A:

Q: Number of atoms of Carbon in 18 moles of C4H10 are: 433.58x10^23 7.48x10^23 O 108.40x10^23…

A: The number of moles of a compound can be obtained by Avogadro's number. It can be calculated as…

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

A:

Q: In one of your experiments, you made magnesium oxide by burning magnesium in the air. How much Mg is…

A: Magnesium reacts with oxygen to make a compound called magnesium oxide. The bright light results…

Q: Number of atoms of Carbon in 19 moles of C4H10 are:

A: Recall the data, moles of C4H10=19 moles  no. of carbon atom ?

Q: A sample of a compound containing only magnesium and oxygen is found to have 194g Mg and 256 g of O…

A: The percentage of Magnesium and oxygen are calculated as,

Q: What is the percent of N in N2H4?

A: Molecular weight of N = 14 g/mol Molecular weight of  H = 1 g/mol Molar mass of N2H4 = 32 g/mol…

Q: Calculate the number of atoms of each element in C12H22O11 and  Calculate the moles of each…

A: The given molecule is sugar. Molecular formula of sugar is C12H22O11. A molecular formula is used to…

Q: 2. How many molecules are present in 15.47 g of acetic acid?

A:

Q: How would I calculate grams of H2O2 given the experimental data?

A: Given information: Molarity of KMnO4 = 0.0968 M

Q: Calculate the percent oxygen by mass in disilicon trioxide(Si2O3) to 3 significant figures.

A: Molar mass of O = 15.999 g/mol.Molar mass of Si2O3 = 104.168 g/mol.

Q: How many grams of the insecticide calcium chlorate must be measured if a sample is to contain 5.79 g…

A: Formula of calcium chlorate = ca(clo3)2 Molecular mass of calcium chlorate is 207g

Q: Calculate the percent by mass of hydrogen in Chloric acid, HClO3.

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Q: A sample of hydrogen sulfide, H2S, has a mass of 30.50 g. Calculate the number of hydrogen sulfide…

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Q: Calculate the mass of 14.4 moles HgO. (In Kilograms)

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

A:

Q: 3. Determine mass percent of nitrogen and iron in Fe(NO3)3.

A:

Q: Ammonium nitrate (NH4NO3), a common fertilizer, id 35.0% nitrogen by mass. How much ammonium nitrate…

A: We have to calculate the amount of Ammonium Nitrate.

Q: the mineral hausmannite is a compound of Mn and O. If hausmannite is 72% Mn by mass, what is the…

A: Given, 72% Mn by mass

Q: the number of moles in 7.44*10^4kg of lead

A: Given Mass of lead= 7.44×104 Kg×103 g1 kg=7.44×107 g Molecular Mass of lead= 207 g/mol To calculate:…

Q: How many grams of C are present in 2.14 grams of carbon tetrabromide ?

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

Q: The formula of ytterbium(III) oxide is Yb₂O₃. What is the percent by mass of oxygen in…

A: Mass percent represents the composition of an element in the given compound, which is calculated…

Q: B. How many number Na* ions in 3 g of Na3PO4?

A: Given, The mass of Na3PO4 = 3g Note: one mole (molar mass ) of any substance contains Avogadro…

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.