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

Q: What are the major sources of error in determination of the molar mass?

A: Major sources of errors in determination  of molar mass is as follows: 1) Errors in measurements due…

Q: A) How many grams of MgI2 is present in a 0.4745 g sample that is 53.21% MgI2 (278.11 g/mol)? B)…

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Q: Determining Molar Mass I The molar mass is mass of one mole of the compound. To determine the molar…

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Q: Sea salt is formed by natural evaporation of ocean water and contains 98% sodium chloride. The…

A: Mass of sodium Chloride can be calculated as :

Q: Cra(50,), 313

A: The name of the given compound is Chromium (III) Sulfite Cr2(SO3)3 In order to find the Molar Mass…

Q: A molecular compound is found to consists 30.4% nitrogen and 69.6% oxygen. if the molecule contains…

A: Given Composition of N = 30.4 % Composition of O = 69.6 %

Q: Difine the term molar mass

A: Molar mass is a physical properties of a substances

Q: 11. What is the percent composition of sulfur in ammonium sulfate? (NH,),SO,? a. 6.7% b. 24% C. 28%…

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Q: Cortisone consists of molecules, each of which contains 21 atoms of carbon (plus other atoms). The…

A: The given data: The number of carbon atoms present in cortisone = 21 The mass % of the carbon in…

Q: SrCl2•6H2O what is the molar mass g/mol?

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Q: What is the molar mass of cholesterol if 0.00105 mol hasa mass of 0.406 g?

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Q: The true value of a compound’s molar mass is 176.082 g/mol. You do an experiment and determine the…

A: Given that, The true value of a compound’s molar mass is 176.082 g/mol and the calculated molar mass…

Q: Find out the molar mass of C6H6Cl6.

A: The Molar Mass of the given Compound can be calculated as -

Q: 2.49E-1 moles of nitrogen is equivalent to how many molecules?

A: 1 mole of any substance (atoms, molecules or ions) contains Avogadro's  number of atoms, molecules…

Q: What is the molar mass of unknown Q whose mass is 23.08g and .0389moles Hint Molar Mass = g/mol %3D

A: Given  Mass = 23.08 gram  Number of mole = 0.0389 mole  Molar mass = ?

Q: The formula for molybdenum(IV) hydroxide is Mo(OH)4. What is the percent by mass of oxygen in…

A: percent by mass of O = (mass of O/mass of Mo(OH)4 ) × 100%

Q: The formula of ibuprofen (Advil®) is C13H18O2 (molar mass = 200.29 g/mol). How many moles of…

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

Q: 1. What is the molar mass of ethane, C,H?

A: In this question, we want to determine the molar mass of ethane ( C2H6 ) How we can calculate the…

Q: 10. A sample of a pure compound contains 12.23 g of nitrogen and 15.01 g of oxygen. The molar mass…

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Q: What is the molar mass of a compound that has 7 atoms of an element with molar mass 20.63 and 18…

A: 1 mole = 6.022×1023 (Avogadro's number)  The mass of 1 mole of molecules of a substance is called…

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

A: Given that, 46.7% by mass of the crust of earth is made up of Oxygen. It implies that every 100 g of…

Q: If 7.80x10¹⁸ atoms of a substance weighs 62.5g what is the molar mass of the substance in units of…

A: The number of atoms present in one mole of any substance is called as Avogadro's number which is…

Q: 3. A compound is composed of 52.14% Carbon, 13.13% Hydrogen and 34.73 Oxygen by mass a. What is the…

A: When two or more atoms combine with each other, they will form a molecule and those molecules have a…

Q: Measurements show that unknown compound X has the following composition: element mass % carbon 40.9%…

A: Consider the given information is as follows; Mass percent of carbon (C) = 40.9% Mass percent of…

Q: Combustion of 10.68 mg of the compound yields 15.92 mg CO2 in 4.89 mg each to the molar mass of the…

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Q: nine the molar mass of nonane, C9

A: We have to find the molar mass of nonane i.e. C9H20

Q: Converting Mass to Moles using Molar Mass I  A sample of chloroethane, C2H5Cl, mass of 18.5 g. What…

A: The number of moles for a given chemical species refers to the ratio of mass of the species to that…

Q: the mass, in grams,

A: Given information: molecules of methanol (CH3OH) = 9.01×1024 Mole is the amount of the substance…

Q: What is percentage composition

A: Answer of the question is given below

Q: A 59.4 g sample of the compound X,O, contains 14.4 g of oxygen atoms. What is the molar mass of…

A: The given compound is X4O6.  Mass of the given compound is 59.4 g. Mass of oxygen in the given…

Q: 4. 4.00 moles of sulfur dioxide SO2? 2.50 moles of methane CH,? How many moles are there in: 6.…

A: Each mole of any substance has Avogadro number of molecules. Each moles of any substance has…

Q: 5 g of hydrated barium chloride is heated in a crucible until the mass of the sample no longer…

A: Given: Mass of hydrated barium chloride = 5 g Mass of sample after heating = 4.26 g The loss of mass…

Q: Determine the molar mass of CH OCH,.

A: We know that, molar mass of C=12 g mol-1 Molar mass of O=16 g mol-1 Molar mass of H = 1 g mol-1

Q: The empirical formula of a compound is CH. If the molar mass of this compound is about 78 g. What is…

A: GIven: The empirical formula of a compound: CH The molar mass of this compound = 78 g Molecular…

Q: In a first expirement, a compound is analyzed and found to contain 85.63% C and 14.37% hydrogen by…

A: 1. atom % in samp;e mole Mole ratio (divided by smallest number of moles) C 85.63 85.63 /12 =…

Q: 22) A sample has a molar mass of 143 g/mol, identify the sample. A) ACCI B) AuCI C) AGCI

A: Molar mass of any molecule is given as the sum of the atomic masses od each of the constituent…

Q: What mass in grams of TNT can be made from 598 g C7H8?

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Q: What is the molar mass of MgS04?

A: Molar mass can be calculated by adding the molar masses of all the species that are present in the…

Q: 5. a) How many moles is 12.04 x 10 molecules of CaCO,? b) What is the mass of this many moles?

A: Since we know that   1 mole of any substance = 6.022 × 1023 molecules of that substance. And  Number…

Q: A sample of a compound has a mass of 41.13 g. The sample is found to contain 37.28 g of carbon and…

A: The mass of the sample compound is = 41.13 g The mass of carbon in this sample is = 37.28 g The mass…

Q: 4. What is the mass percent composition? Why is it useful?

A: Mass percent of each type of element in a compound is called the mass percent composition of the…

Q: 7. The mass percent of water in a hydrate of MnCl, is 36.41%. What is the empirical formula of the…

A: We have to calculate the formula for hydrate..

Q: 18. 7.68 g/mol ® ng/molecules

A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…

Q: The density of lithium (Li) is 0.534 g/mL. Determine the molar volume of lithium.

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Q: 9) How many molecules of SO, are in 200 g of SO,?

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Q: a) Determine the molar mass (also known as molecular weight or molecular mass) of the following…

A: a. Determination of the molar mass: The mass of one mole of molecules is called molar mass. The…