Define the term formula weight (FW) of a substance?

Q: Determine the carbon mass in a 0.254 gram sample of CO2 . 0.06932 gramsCarbon 0.0450o gramScarbon|…

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Q: If a molecule with an empirical formula CHO has a molar mass of 88.12 g/mol, what is its molecular…

A: Given, Empirical formula = CHO  Molar mass = 88.12 g/mol     Required,                     Molecular…

Q: A compound is found to contain 15.94 % boron and 84.06 % fluorine by mass. What is the empirical…

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Q: What is the mass of 1 mol of molecules of each compound? (a) CO2 (b) CH2Cl2 (c) C12H22O11 (d) SO2

A: Since you have posted multiple subparts the answer for first three subparts are given below. Kindly…

Q: What is the difference between an empirical formula and a molecular formula? Can they ever be the…

A: The empirical and the molecular formulas are both a type of chemical formulas. An empirical formula…

Q: A compound of molar mass 229 g/mol contains only carbon, hydrogen, iodine, and sulfur. The analysis…

A: The ratio of the mass of carbon to hydrogen = 6:1 The ratio of moles of carbon and hydrogen =

Q: How many grams of carbon tetrabromide contain 2.48 grams of Br ?

A: grams of carbon tetrabromide contain 2.48 grams of Br  will be found like this:

Q: A compound with a molar mass of 164.12 g/mole is 58.54 % carbon (12.01 g/mole), 2.46% hydrogen (1.01…

A: Given :- Molecular mass of compound = 164.12 g/mol  composition of C, H, & O are 58.54%, 2.46%,…

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

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Q: A compound is found to contain 34.60 % chlorine , 46.85 % oxygen , and 18.55 % fluorine by mass. To…

A: Given: Mass percent of chlorine = 34.60 % Mass percent of oxygen = 46.85 % Mass percent of fluorine…

Q: Why do molecular, structural, and empirical formulas exist?

A: Why do molecular, structural, and empirical formulas exist?

Q: How many molecules of C2H4 are in 15.0 g of this compound?

A: The molecular formula of compound is C2H4. The amount of compound is 15.0 g.

Q: A sample of propanol, C3H3O, contains 0.383 mol of the compound. What is the mass of the sample, in…

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Q: Calculate the empirical and molecular formulas of a compound from percentage composition and…

A: Let us solved the problem by taking an example accordingly. Let us suppose a sample has 45% of…

Q: A compound with the empirical formula CH2CH2 has a molar mass of 112112 g/mol. What is the molecular…

A: Solution,  The above question belong to some basic concept of chemistry. Empirical formula is the…

Q: What are Formula Weights?

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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: Determine the molecular formula of a compound with an empirical formula of CH and a molar mass of…

A: This is general physical chemistry .

Q: Which of the following would NOT be an empirical formula? O C2H6 O Al203 O H3PO4 O H20

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Q: The mass fraction of an element present in a compound can be obtained by comparing the mass of the…

A: Mass fraction of an element is defined as the total mass of the element to the total mass (molar…

Q: mass of potassium iodide

A: Moles of potassium iodide (KI) 0.0950 has three significant figures because zeros at the beginning…

Q: How many moles of (NH4)3PO4 are contained in 0.917 g of this compound?

A: Given that: Mass of (NH4)3PO4 = 0.917g Moles of (NH4)3PO4 = ?

Q: Which of the following can be considered an empirical formula? Explain how you know. CH4 C2H8 C2H6…

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Q: A compound with the empirical formula CH2 has a molar mass of 56 g/mol. What is the molecular…

A: Applying formula Molecular formula= (empirical formula)n

Q: What is the molecular formula of a compound that is composed of 0.186 g C, 0.0390 g H and 0.108 g N…

A: Given: The mass of carbon (C) is 0.186 g The mass of hydrogen (H) is 0.0390 g The mass of nitrogen…

Q: Describe how the number of grams of certain elements in a compound can be used to determine an…

A: The use of grams of certain elements in a compound can be used to determine an empirical formula.

Q: The formula weight of potassium dichromate (K2Cr2O7) is __________ amu.

A: The molecular formula of the compound is K2Cr2O7

Q: If 10 magnesium (Mg) atoms and 10 chlorine (Cl) atoms bump into eaxh othee, could they form a…

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Q: What is the formula mass for a compound? Why is it useful?

A: The formula mass is defined as the summation of the average atomic masses of each atom that is…

Q: 4. Does 1 g of hydrogen molecules contain as many H atoms as 1 atoms? of hydrogen

A: A mole is amount of substance which contain same number of units as the number of atoms in 12 gm…

Q: Which of the following represents an empirical formula? a. C3H6O3 b. N2O2 c. CH4 d. C2H2Br2 e.…

A: The simplest ratio of the elements in the chemical compound is called empirical formula.The ratio…

Q: A compound containing carbon and hydrogen has a molar mass of 56.11g/mol and an empirical formula of…

A: Empirical Formula: Indicates the simple whole number ratio of different types of atoms present in…

Q: theoretical yield of chemical formulas

A: The theoretical yield is the amount predicted by a stoichiometric calculation based on the number of…

Q: How are formula weight and molar mass calculated?

A: To find: How are formula weight and molar mass calculated

Q: what is Percent Composition?

A: Mass percent :- The mass of a component in grams present in 100 grams of the mixture is defined as…

Q: A compound containing carbon and hydrogen has a molar mass of 56.11 g/mol and an empirical formula…

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Q: What are the similarities in how formula weight and molar mass are calculated?

A: Formula weight :- In chemistry, the sum of the atomic weights of all atoms appearing in a given…

Q: Differentiate molecular, empirical, and structural formula of chemical compounds.

A: The molecular, empirical and structural formula has to be differentiated.

Q: Identify the empirical formula from the molecular formula:

A: using basics of empirical formula by molecular formula.

Q: A compound with the empirical formula CH2 has a molar mass of 98 g/mol. What is the molecular…

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Q: What are the molecular weights of the following compounds?(c

A: Molecular weight of the compound is the  sum of the atomic masses of all atoms present in the…

Q: Arrange the following compounds from left to right in order of increasing percentage by mass of…

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Q: What is the empirical formula of glucose?

A: An empirical formula represents the lowest whole number ratio of elements in a compound.The…

Q: if 4.04g of n combines with 11.46g of o to produce a compound with a formula mass of108.0 amu, what…

A: Given data,  Mass of N = 4.04 g  Mass of O = 11.46 g  Formula mass of the compound = 108 amu

Q: Determine the formula weight of NH₄I.

A: Formula weight of any substance can be calculated by adding the total atomic weights of all the…

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.