Calculate the number of oxygen atoms in a 100.0 g sample of iron (III) oxide (Fe₂O₂).

Q: Calculate the mass in grams of a sample of NO2 that contains 1.000 x 10^25 molecules.

A:

Q: Calculate the number of moles present in 6.02 x 10²⁴ molecules of CH4 (Methane)

A: Given, 6.02 x 10²⁴ molecules

Q: When I calculate 9.89g of caffeine (C8H10N4O2) into number of atoms I divide the mass by atomic mass…

A: Your calculations are on the right track, but it's important to understand the concept of the mole…

Q: Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 48.0% of the lighter…

A: Average mass of an element is defined as the atomic mass of the element calculated by multiplying…

Q: Calculate the mass in grams of 1.10 x 104 molecules of Sulfane, H2S. g NA= 6.022 x 1023

A: Mass of H2S in grams = 6.210 g

Q: 3 FeS2   +  11 O2   →  Fe3O4   +  6 SO3 100 g of iron sulfide was reacted with excess oxygen,…

A: 3 FeS2   +  11 O2   →  Fe3O4   +  6 SO3 Atomic masses Fe=56; S=32, O=16 Molecular mass of…

Q: Calculate the mass of 1.00 x 1024 (a septillion) molecules of water.

A: Given : Number of water molecules = 1.00 X 1024

Q: How many H atoms are there in (2.22x10^2) grams of NH3?

A: The answer to the following question is given as:

Q: late the mass in grams of a sample of NO2 that contains 1.000 x 1025 molecules.

A:

Q: nterpret the following equation in t

A: mole intermes of particles :     1 mol = 6.022 x 1023…

Q: Calculate the mass in grams of 1.10 x 1024 molecules of Sulfane, H2S. g NA= 6.022 x 1023

A:

Q: Using the density of argon= 1.54 g/L, how many argon atoms are present in a room with dimensions of…

A: To solve this problem first we calculate the volume of room and then we will calculate the mass of…

Q: An 8.00 gram sample of the hydrated salt, CoCl2 x XH2O was thermally decomposed into anhydrous…

A: Given: Mass of hydrated salt = 8.00 g. And the mass of anhydrous salt obtained = 4.370 g.

Q: Calculate the number of moles of potassium hydrogen phthalate (abbreviated KHP, chemical formula is…

A:

Q: Starting with the following equation, Fe₃O₄(s) + CO(g) → Fe(l) + CO₂(g) calculate the mass in grams…

A: Weight of Fe = 575 gm

Q: plucheme & Calculate the Mass (in grams) of 6.97 x 1023 Compounds of (NH4)2S

A:

Q: Calculate the mass in grams for 8.86 x 10^2 moles of PCl3.

A: Molar mass of PCl3 has to be calculated: gram atomic mass of Phosphorous (P) = 31 g gram atomic mass…

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

A:

Q: Determine the number of atoms of O in 43.6 moles of Al₂(CO₃)₃.

A:

Q: Calculate the mass (in g) of 1.2 x 1024 atoms of molybdenum, Mo.

A: using mole concept , easily determination of atoms , molecules and ions possible.

Q: Calculate the percentage composition for PCI3. Mass percentage of phosphorus = Mass percentage of…

A: Formula : PCl5 Molar mass of P = 31 g/mol Molar mass of Cl = 35.5g/mol  Molar mass of PCl5 = P +…

Q: Determine the number of atoms of O in 66.6 moles of Al₂(CO₃)₃.

A: Here I have determined the number of atoms of O in 66.6 moles of Al₂(CO₃)₃.

Q: How many Moles of magnesium phosphate do you have if you have 8.257 x 10^25 phosphate ions

A: Divide ion by Avogadro number to get mole

Q: How many moles of Fe(NO3)2 are present in 32.176 g Fe(NO3)2?

A: Molar mass of Fe(NO3)2 = 56 + (14+ 16x3) x 2 = 56 + 124 = 180 g/mol Given mass of Fe(NO3)2 = 32.176…

Q: Determine the number of molecules of ethanol( C 2 H 5 OH) in 47.0 g.

A: In the International System of Units, the mole (symbol: mol) is the unit of measurement for the…

Q: Calculate the mass in grams of 6.12 mole Cu(NO3)2.

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: Determine the number of nitrate ions in 177 g Mg(NO3)2.

A: Mole is defined as weight of substance divide by it's molar mass.…

Q: Calculate the mass of 236 molecules of Fe(NO3)3.

A:

Q: 2. What is the mass (in grams) of 7.11 X 102 molecules of tetraphosphorous trisulfide?

A: Given, number of molecules = 7.11×1022 Avogadro's constant = 6.022×1023 molecules.mole-1

Q: Determine the number of nitrate ions in 179 g Mg(NO3)2.

A:

Q: Calamine is a naturally occurring zinc silicate that contains the equivalent of 67.5% zinc oxide,…

A: Using mole concept we can easily determine how much reactants  is used or composition of elements in…

Q: Starting with the following equation, Fe₃O₄(s) + CO(g) → Fe(l) + CO₂(g) calculate the mass in grams…

A:

Q: Calculate the number of atoms in a 2.92 x103 g sample of boron.

A: Firat calculate number of moles.

Q: Starting with the following equation, Fe₃O₄(s) + CO(g) → Fe(l) + CO₂(g) calculate the mass in grams…

A:

Q: A 2.25 g sample of titanium metal is burned in an oxygen atmosphere to produce 3.75 g of a titanium…

A: Given that the mass of Titanium is 2.25 g and the mass of oxide is 3.75 g of Titanium oxide. The…

Q: Calculate the mass percent of chlorine in Mg(ClO4)2.

A: We know that, Molar mass of Cl = 35.45 g/mol Molar mass of Mg(ClO4)2 = 223.206 g/mol

Q: Consider a 214.6 g sample of the compound manganese(IV) perchlorate. Using the formula Mn(ClO₄)₄ (MM…

A: The mass of the sample of the compound manganese(IV) perchlorate is = 214.6 g The molar mass of…

Q: Calculate the amount of  anions (in moles) in 8.6 g of magnesium perchlorate. Express your answer…

A: Magnesium perchlorate, Mg(ClO4)2 dissociates into three ions as given by the equation: Mg(ClO4)2 →…

Q: Write a balanced equation for the reaction of glucose (C 6H 12O 6) with oxygen (O 2) to form carbon…

A: The balanced chemical equation is the equation formed when the elements on the reactant side of the…

Q: Determine the number of atoms of O in 57.7 moles of Al₂(CO₃)₃.

A: Given number of moles of Al2(CO3)3 = 57.7 mole  Number of oxygen atom =?

Q: Starting with the following equation, Fe₃O₄(s) + CO(g) → Fe(l) + CO₂(g) calculate the mass in grams…

A: The reaction taking place is given as, => Fe3O4 (s) + CO (g) → Fe (l) + CO2 (g) Given: Mass of Fe…

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.