What is the mass of the iron present in 1.04x10^23 units of Fe2O3? (Fe=55.845 O= 16.00)

Q: How many kilograms of NaCl contain 3.49 x 10 ions? There are 2 moles of ions per mole of NaCl, and 1…

A: Given  number of ions of NaCl= 3.49 x 1025 ions molar mass of NaCl = 58.5 g/mol 1 mole  = 6.022 x…

Q: What is the mass, in grams, of 8.55x1021 iron atoms? O 11.9g O 0.793 g O 1.26g 55.7g

A: Given: Number of iron atoms = 8.55 × 1021 atoms.

Q: the number of copper atoms in a 3.0g lump of copper is 2.8x1022 .how many electrons present in the…

A: Number of copper atoms = 2.8 × 1022  We need to determine number of electrons present.

Q: Which of the following is the molecular weight of a binary compound made from the element calcium…

A: A compound which is formed exactly of only two atoms that are different from each other, and cannot…

Q: A metal (M) forms an oxide with the formula MO. If the oxide contains 39.70 % O by mass, what is the…

A: Molar mass of an element is its characteristic property .So to identify the metal, first its molar…

Q: A metal (M) forms an oxide with the formula M2O. If the oxide contains 16.99% O by mass, what is the…

A: The given data contains, mass of Oxygen = 16.99 g. Thus mass of M= 100-16.99 = 83.01 g.

Q: An iron-containing compound is 20.1% Fe, 11.5% S, 63.3% O, and 5.1% H. What is the empirical formula…

A: For calculating Empirical formula for compound we follow these steps:(i) calculate %Atomic mass for…

Q: Balance the following equation by filling the gaps with appropriate numbers. Na + NANO3 Na20 N2

A: Given here an unbalanced chemical reaction and we are asked to balance the reaction.

Q: There are 6.02x1023 atoms in one mole of any element. Assuming that the titanium rod in the question…

A: Given that, Number of moles of titanium = 4.70 moles

Q: What is the molar mass of magnesium (Mg)? A)24.305 B)54.9380 C)48.610 D)35.45 E)22.99

A: Given      Element  = Magnesium  Molar mass = ?

Q: How many atoms in total are there in one molecule of Mg(NO3)2?

A: In a molecular formula, symbols of all the constituting atoms are shown along with their numbers in…

Q: 5. How many atoms of hydrogen are present in 2.69 moles of water? 6. Calculate the mass of nitrogen…

A:

Q: What is the mass of one atom of I? O 4.745 x 10-22 g O 3.443 x 10-22 g O 6.641x 10-23 g O 2.107 x…

A:

Q: A substance is 77.5% Pb, 4.5% C, and 18.0% O. How many atoms of carbon are there for each atom  of…

A:

Q: D. Calculate the mass (g) of the following samples. 25) 238 moles of lead 26) 1.54 x 10° moles of Zn…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: How many oxygen atoms are there in 50 g of sucrose (C12H22O11).

A: Mass of sucrose = 50 g  Formula of sucrose = C12H22O11

Q: b. Mass of I- in the sample. O 0.1438 g O 0.1722 g O 0.1623 g O 0.1939 g O 0.1840 g

A:

Q: Calculate the mass of dinitrogen tetroxide N2O4 that contains a million (1.0 x 10^6) oxygen atoms.

A: Molar mass of N2O4 is 92.011 g/molTherefore 92.011 g of N2O4 contains 6.022 x 1023 molecules As, 1…

Q: A compound contains C, H and O. The compound is 49.31 % by mass carbon, 43.79 % by mass oxygen with…

A: The empirical formula of a chemical compound is the simplest whole number ratio of atoms present in…

Q: A.How many moles of boron tribromide are present in 5.93 x 10^22 molecules of this compound?…

A: The molar mass of bromine tribromide  (BBr3) is 250.52 g/mol .

Q: W

A: A mole can be defined as a unit for the amount of substance. Formula for number of moles:

Q: Determine the Average Atomic Mass of the mixtures of Hydrogen isotopes. 99% 'H, 0.8% ²H, and 0.2% 'H

A: Answer is explained below.

Q: Aspartame is an artificial sweetener that that is 160 times sweeter than sucrose(table sugar) when…

A:

Q: Calculate the mass percent of oxygen (O) in dinitrogen oxide (N2O) to the nearest 0.01%. Number

A: Molar mass of Nitrogen =14 g/mol  Molar mass of Oxygen = 16 g/mol  Molar mass of N2O = (14*2)+16…

Q: In using a mass spectrometer, a chemist sees a peak at a mass of 30.0106 AMU. Of the choices 12C2…

A:

Q: What is the molar mass of the compound with the formula X2Y2Z7, where X is an alkali metal from the…

A: Given: The compound with the molecular formula, X2Y2Z7, X= alkali metal from the 3rd period. Y= an…

Q: Choose a ratio showing the relationship between the amounts of each element for each of the…

A: A) The structure given is,

Q: A nanotechnology experiment requires 3.60x 1019 atoms of potassium. What is the mass of this sample?…

A: Given  number of atoms of potassium = 3.60 x 1019 atoms To find mass of this sample. Required data -…

Q: Iron is found in Earth's crust as seve pounds. Calculate the mass (in kg) c contains 1.0 X 10° kg of…

A: Molecular-Mass: Molecular mass is the sum of atomic masses of the elements present in a molecule. It…

Q: 7. Which of the following is the molecular formula of a sample of a compound containing 30.46%…

A: Please find your solution below : Molecular formula of any compound is an expression about the…

Q: A sample of hydrocarbon on complete combustion gave 1.32 g of carbon dioxide and 0.72 g of water.…

A: Since we know that on complete combustion of of any hydrocarbon it produces H2O and CO2 . To solve…

Q: Find the mass of 2.54 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.15g and O = 15.8g as…

A:

Q: 1-How many oxygen atoms are there in 1?25 x 1018 water molecules?

A: Number of water molecule = 1.25 × 10^18molecule

Q: A carbon- hydrogen-nitrogen compound has a molar mass of 114.20 g/mol and it has the following…

A: Empirical formula of a compound may be defined as the formula which gives simplest whole number…

Q: An experimental catalyst used to make polymers has the following composition: Co, 23.3%; Mo, 25.3%;…

A: Determination of empirical formula   The percentage composition of elements present in given…

Q: Complete the table, and then analyze the data to determine if Compounds Iand II are the same…

A: The concentration of a substance can be measured in terms of mass by mass percentage. This…

Q: What is the mass of one atom of I? O 6.641 x 10-23 g O 4.745 x 10-22 g O 2.107 x 10 22 g O 3.443 x…

A: To determine the mass of 1 atom of I, do the following : 1) Determine molar mass of the substance.…

Q: The atomic mass of titanium (Z = 22) is 47.87 amu. How many atoms are present in 45.5 g of titanium?…

A: Mole of a substance or a mole of a particles is defined as exactly 6×10^23 particles which may be…

Q: Tetracarbon dioxide is an unstable oxide of carbon with the following molecular structure: What are…

A:

Q: A macromolecule has an empirical formula of C4H306. The molecular mass for the macromolecule is…

A: Given :- empirical formula of macromolecule = C4H3O6  Molecular mass of macromolecule = 429.21 g/mol…

Q: A block of gold (Au) has the dimensions (I × b x h) = 0.7600 in x 8.558 mm x 1.816 cm. 1 in = 2.54…

A:

Q: How many atoms (total) are present in a 3.45 x10-2 m3 sample of Al2O3, which has a density of 3.95…

A:

Q: What is the mass percent composition of platinum in the carboplatin, C6H12N2O4Pt? Relative atomic…

A:

Q: The Avogadro number is defined as A The number of electron in 12g of C-12 substance B The number of…

A: The question is based on the concept of avogadro  number. we have to correctly identify the…

Q: 5. Aspartame is an artificial sweetener that is 160 times sweeter than sucrose (table sugar) when…

A: Note - Since you have posted a question with multiple sub-parts, we will solve first three subparts…

Q: 1. What is the percent, by mass, of chromium in KCrO4? a. 26,776 % b. 31.763 % c. 40.268 % d. 42.241…

A:

Q: Using atomic masses of 69.7 g/mol for gallium and 35.5 g/mol for chlorine, the percent chlorine by…

A: Given that, the molar mass of gallium (Ga) is 69.7 g/mol. The molar mass of chlorine (Cl) is 35.5…

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.