A sample of a compound was found to contain 54 grams of aluminum, 96 grams of oxygen, and 6 grams of hydrogen. What is the empirical formula of this compound? A A130 H 3 A16 OH C A12 06 H 6

Q: A 2.144-g sample of phosgene, a compound used as a chemical warfare agent during World War I,…

A:

Q: 15)An unknown compound is composed of 25.24% by mass of sulfur and 74.76% by mass of fluorine. If…

A: Molar mass of compound given= 254.11 g/mol  Let mass of the compound in grams= 100g  Then  mass of…

Q: Pitchblende is the most important compound of uranium. Mass analysis of an 84.2-g sample shows that…

A: Elements are combined together in different molar ratios in order to form a compound.

Q: .........grams of zinc arsenite contains 4.5 x 1024 atoms of arsenic.

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Q: 13. How many oxygen atoms are in 225 g of O2? a. 4.23 x 1024 b. 6.84 x 1024 c. 8.47 x 1024 d. 1.69 x…

A: Number of Atoms of Oxygen can be calculated as -

Q: Samples of several compounds are decomposed, and the masses of their constituent elements are…

A: The empirical formula of each compound has to be given. (a) Given data contains, Mass of Ba=2.677 g…

Q: A lab analysis of an organic compound showed it is made up of 60.00% C, 5.75% H, and 34.25% O. If…

A: Given, C = 60.00 %  H = 5.75 %  O = 34.25 %  Molecular mass = 560.56 g/mol

Q: The formula for sulfur hexafluoride is SF. a. How many molecules are in 6.61 grams of sulfur…

A:

Q: What is the number of Carbon atoms in this chemical formula?   C_{11}H_{24}

A: The chemical formula is used to represent a compound. The given chemical formula of the compound is…

Q: What is the mass of 3.119 moles of Ca(OH)2? a.  231.1 g b. 462.1 g d. 74.10 g c. 4.209 x 10^-2 g

A: Given, moles of Ca(OH)2 = 3.119 moles. We have to calculate how many grams of Ca(OH)2 are present…

Q: Which sample contains the greatest number of atoms? 54.7 g V 51.2 g Mn 203 g Bi

A: To find number of atom we have to calculate number of moles first. Moles= given mass/molar mass…

Q: calculate the number of grams of nitrogen in 3.72 grams of AL(NO3)3

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Q: How many atoms are in each elemental sample? Express your answer using two significant figures. 1)…

A: One mole of a substance is the amount of the substance that is equivalent to the molar mass of the…

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: A compound containing copper, sulfur, and oxygen was decomposed and the masses of these components…

Q: What is the average mass (in grams) of a single carbon dioxide molecule? (a) 3.8 × 10-26 g (b) 7.31…

A: Molecules are formed when two or more atoms of the same or different atoms combine. These consist of…

Q: 2. Find the mass (in grams) of 3.9 X 102 molecules of CO, 3.9 X 1023

A: The molecular mass of carbon dioxide is 44.01g/mol. We know that 1 mole of any substance contains…

Q: The compound is composed of 40% Carbon, 6.7% Hydrogen, 53.5% Oxygen. The molecular mass is 60.0g/mol…

A:

Q: A 2.37 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.24 x 1044…

A: Given data,  Mass of nitrous oxide = 2.37 g  Contains 3.24 × 1022 N2O molecules

Q: One mole of oxygen molecule (O2) contains how many atoms of oxygen? O a. 6.022 x 1023 O b. 6.022 x…

A: Applying concept of moles and avogadro number.

Q: What is the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0%…

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Q: 1. If you have 0.270 mol of silver how many atoms of silver do you have? 0.an0 mul x C6.02axi0 =…

A: Mole relationship explains the relationship between number of moles, atomic mass and number of atoms…

Q: A compound has an empirical formula of C 2H 3. If a sample of the compound contains 4.36 grams of…

A: Empirical Formula :- It is the simplest ratio of number of atoms present in a compound. The ratio is…

Q: What is the average mass (in grams) of a single nitrogen dioxide molecule? A. 3.6 x 10-26 g B. 2.77…

A: Since mass of 1 molecule  = molar mass / Avogadro's number Molar mass of Nitrogen dioxide (NO2) = 14…

Q: A compound has an empirical formula of C 8H 15. If a sample of the compound contains 3.89 grams of…

A:

Q: Phosphorus has the molecular formula P4, and sulfur has the molecular formula S8. How many grams of…

A: Given Number of molecules of P4 = number of molecules of S8 moles of P4 = moles of S8   mass of…

Q: One mole of iron contains 6.022 x 1023 grams of Fe. True False

A: One mol of any substance has mass equal to its molar mass and contain atoms equal to the Avagadro's…

Q: which of the following has the greatest number of particles? a. 76 g of Mg(OH)2 b. 2.95 g of H2 c.…

A: a) To determine the number of particles in 76 g of Mg(OH)2, no. of moles = given massmolar mass= 76…

Q: 28) Determine the mass of the following compound: 0.0146 mol KOH A) 56.11 g B) 0.819 g C) 8.19 g 29)…

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Q: A compound has an empirical formula of C 8H 17. If a sample of the compound contains 4.90 grams of…

A: To solve this problem we will first find the number of moles of carbon from the given mass then…

Q: How many calcium atoms are in 1 g of CaO? O 9.553 x 10-23 O 7.201 x 1023 O 1.074 x 1022 O 1.422 x…

A:

Q: A compound contains 70.6% C, 5.9% H, and 23.5% O by mass. The molecular mass of the compound is 136…

A: Given :-  % by mass of C = 70.6 % % by mass of H = 5.9 % % by mass of O = 23.5 %  Molecular mass of…

Q: What is the amount, in moles, of each of the following substances? A)12.6 g Ar B)3.50 g Zn C)26.5…

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Q: Can you provide all the work in detail, as I will be using this to study.

A: Given,Mass of sample = 0.734g.Mass of nitrogen = 0.604g.Mass of hydrogen = 0.734g – 0.604 =…

Q: The mole is a unit of measurement, which chemists routinely utilize. Which of the following molar…

A: A mole is defined as the amount of substance tht contains the same number of atoms, molecules, ions…

Q: Using the following equation: Fe:O:(s) + 3H:(g) → 2Fe(s) + 3H:O(1) How many grams of iron,Fe, can be…

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Q: Calculate the mass of gold(III) chloride (Au2Cl6) that contains a million (1.000 x 10^6) chlorine…

A: The atomic mass of Au (gold) is 197 g/mol while the atomic mass of Cl(chlorine) is 35.5 g/mol. Molar…

Q: Sodium and nitrogen form two different binary compounds. The percentages in the two compounds are:…

A: a) Step 1: Conversion of mass % to grams. Assume the weight of the compound is 100 g. Thus, in 100 g…

Q: 1) _Fe + 6.882 g of iron yields how many grams of hydrogen? H;SO, >_Fe(SO4)3 +

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Q: 3. Which sample contains the same number of atoms as 1 gram of He? 6 g of C 7 g of Si 9 g of F 8 g…

A: Mass of He = 1g Molar mass of  He= 4 g mol-1   Mass of C = 6 g Molar mass of  C= 12 g mol-1   Mass…

Q: Samples of several compounds are decomposed and the masses of their constituent elements are shown…

A: Calculate moles of each element by dividing the given mass by their molar mass & convert them…

Q: Beryl (emerald) is a precious gemstone with the formula:  Be3Al2(SiO3)6.  MM Be3Al2(SiO3)6  =…

A: a. Given, 1.00 g of beryl

Q: A 5.325-g sample of methyl benzoate, a compound used in the manufacture of perfumes, is found to…

A:

Q: 8. Potassium persulphate (Anthion) is used in photography to remove the last traces of hypo from…

A: Empirical formula and molecular formula of compound is to be calculated.

Q: The formula for boron trichloride is BCl3. A. How many molecules are in 9.31 grams of boron…

A: Molecular formula of Boron trichloride is BCl3. It has three Chlorine atom and one boron atom. Molar…

Q: 9. What is the mass of one-half mole of SO2? а. 8 g с. 24 g b. 12 g d. 32 g 10. How many grams are…

A: We know ; Mole of compound =  Mass of compound/ Molar mass of compound     1 mole of substance has…

Q: After heating, the anhydrous salt can be left on the bench several minutes before weighing * True…

A: As per our guidelines we can only solve first three sub-parts. Please resubmit the other questions…

Q: A 3.69 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 5.05 x 1022…

A: a.The total number of nitrogen atoms in 3.69g sample of nitrous oxide is calculated as,

Q: The number of oxygen atoms in 20.18 grams of Al(NO3); is: O 1.712 x 1023 O 0.09474 5.135 x 1023 O…

A: molecular mass of Al(NO3)3 = 213g no of atoms in 1 mole Al( NO3)3 = 6.023X1023 X 6 atoms no of moles…

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.