Beryllium is a light metal used to fabricate transparent X-ray windows for medical imaging instruments. How many moles of Be are in a thin-foil window weighing 3.24 g?

Q: Lipitor (C33H35FN,O5) is an important pharmaceutical compound for cardiovascular health. The molar…

A: Given :-  Molar mass of lipitor = 558.63 g/mol  Mass of lipitor in a dose = 0.0100 g  To calculate…

Q: if 0.274 moles of a substance weigh 62.5 g, what is the molar mass of the substance in units of…

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

Q: Each molecule of vitamin B12 contains a single atom of cobalt and is 4.35% cobalt by mass. What is…

A:

Q: Beryllium is a light metal used to fabricate transparent X-ray windows for medical imaging…

A: Number of moles = mass/molar mass given mass of Be = 3.24g molar mass of Be = 9.01g/mol Number of…

Q: The molecular weight of glucose (C,H„Os) is 180 g/mole. How many grams are there in 0.18 moles of…

A:

Q: An oxide of nitrogen contains 30.45 mass % N and has a molar mass of 92.02 g/mol. What is the…

A: Given :-  % composition of N in nitrogen oxide = 30.45%  molar mass of compound = 92.02 g/mol  To…

Q: Ibuprofen, C13H18O2, is a covalent compound and the active ingredient in common…

A: Given  Mass of Ibuprofen = 100 gram  Number of mole    = ?

Q: when 47.8g of KClO3 is completely decomposed what is the theoretical yeild in grams of O2?

A: Given,Mass of KClO3 = 47.8 g Moles of KClO3 can be calculated as:

Q: What is the mass in grams of 39.30 moles of NaI?

A:

Q: A compound consisting of carbon and hydrogen is 92.3% C. If the molar mass of the compound is 156.2…

A: Given percentage of carbon = 92.3 %  Percentage of hydrogen = 100-92.3 = 7.7 %  Molar mass of carbon…

Q: A stack of 500 sheets of typewriter paper is 1.9 inches thick. The thickness, in inches, of a stack…

A: Number of sheets in a stack = 3.01 × 1023 One mole contains Avogadro’s number of sheets. Therefore,…

Q: How many moles are there in a copper wire that was a mass 10.000 g?

A: Solution The number of moles AN exceedingly|in a very} given sample of an element/compound is…

Q: Chlorofluorocarbons (CFC's) are a class of compounds that have a long b of use in refrigerators…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: A compound containing only sulfur and nitrogen is 69.6% S by mass; the molar mass is 184 g/mol. What…

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Q: White limestones contains a large percentage of calcium carbonate, CaCO, What is the mass in grams…

A: The relation between mole and mass of any substance is given by - Mole = Mass/molar mass

Q: If 1.3226 moles of magnesium is heated with 0.3219 moles of nitrogen forming magnesium nitride, how…

A:

Q: A compound has a molar mass of 34.02 g. What is its chemical formula if hydrogen and oxygen are…

A: The Chemical Formula of the Compound is given as -

Q: The molar mass of C6H1206 is 180 g/mol. How many grams are present in 0.20 moles of this substance?

A: Here given, The molar mass of C6H12O6 is 180 g/mol, which means that in one mole of C6H12O6 there…

Q: B. How many moles of manganomanganic oxide will react with 5.33 x 1025 atoms of aluminum?

A: The balanced Chemical equation given - 3Mn3O4 + 8Al -----> 4Al2O3 + 9Mn   One mole of aluminum =…

Q: A sample of histamine having a mass of 385mg is composed of 208mg of carbon, 31mg of hydrogen, and…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: An iron (Fe) bar weighed 664 g. After the bar had been standing in moist air for a month, exactly…

A:

Q: What is thé mass percentage of C in codeine, C18H21NO3? Provide an answer to two decimal places.

A: Given : We have to calculate mass percentage of carbon in codeine.

Q: What quantity in moles of NaI are in 51.3 grams of NaI ?

A:

Q: a. What is the mole ratio between BaSO4 and Fe,(SO3? b. How many moles of BaSO, can come from 0.557…

A: The ratio between the amounts in moles of any of the two compounds involved in a chemical reaction…

Q: 17.5 moles of CO2 contain how many atoms of carbon?

A: Given,  Number of moles of CO2 = 17.5 moles 1 mole of CO2 contains 6.023 × 1023 molecules of CO2 .

Q: How many grams is 0.0041 moles of baking soda, NaHCO3?

A: Given, moles of NaHCO3= 0.0041 molar mass =84 g mol-1 then,

Q: What is the mass in grams of 2.59 moles of aluminum oxide?

A: Given,    Number of Moles of Aluminum Oxide = 2.59 moles

Q: I have a compound Magnesium Aluminium Chloride. The mole ratio of these elements to each other is 1:…

A:

Q: How many grams of sulfur are present in 1.24 moles of sulfur dioxide? The molar mass of sulfur…

A:

Q: If 20 moles of ammonia () are needed for a particular process, how many moles of diatomic Nitrogen…

A: Given that, We require 20moles of Ammonia (NH3 ) in a process.  We have to calculate how many moles…

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: How many moles are in a sample of Saccharin with a mass of 35.31 grams? Saccharin is an artificial…

A: We know that, number of moles can be expressed as,

Q: How many moles is 43.6 grams of lithium hydroxide, LiOH?

A:

Q: Phosphorous and sulfur form an extensive series of sulfides with the general formula PxSy. Determine…

A: Recall the measurements, %S=72.1 % Unknown = PxSy

Q: When 5.00 grams of KClO3 is heated, decomposes to potassium chloride and oxygen. what is the percent…

A:

Q: What is the mass in milligram of a. 0.888 mol of H,SO,?

A: Given :-  Number of moles of H2SO4 = 0.888 mol   To calculate:-  Mass of H2SO4  Mass = number of…

Q: An industrial detergent was found to be composed of 57.72% C, 8.073% H, 17.09% O, by mass and the…

A: Let's assume, the empirical molecular formula of the given compound is CaHbOcX2c. 'a' is the no of…

Q: Fungal laccase, a blue protein found in wood-rotting fungi, is 0.390% Cu by mass. If a fungal…

A: Lets assume we are having 1 mole of Fungal laccase , As per the question there should be 4 moles…

Q: For the amino acid cysteine (C3H7NO2S), calculate: (a)How many moles are in 5.0 g of cysteine? b)The…

A:

Q: What is the simplest or empirical formula of a compound which is found to have a mole ratio    of…

A: Given;

Q: A Chlorin oxide is 59.7 % by mass Cl. What is the empirical formula of the ?oxide CI02

A: The compound is an oxide of chlorine. The percent mass of chlorine in the compound is 59.7 %. The…

Q: Fungal laccase, a blue protein found in wood-rotting fungi, is 0.389%  Cu by mass. If a fungal…

A: Given: Cu in Fungal laccase =0.389% by mass number of the molecule of copper in Fungal laccase=4 The…

Q: A 52-kg woman has 7.2 x 10 mol of hemoglobin (molar mass = 64456 g/mol ) in her blood. How many…

A: We know that 1 mole of any substance contains Avogadro number of molecules i.e 6.022 ×1023…

Q: Beryllium is a light metal used to fabricate transparent X-ray windows for medical imaging…

A: Moles is defined as the measurement of a substance that contains 6.022×1023 number of particles…

Q: What amount (mol) of Rb is present in a sample containing 3.15×1025 atoms?

A: Given,Number of atoms in a sample = 3.15 × 1025 atomsWe know that, 6.022 × 1023 atoms are in 1 mole…

Q: How many moles of iron(III) oxide can be produced from the reaction of 10.980 moles of iron reacting…

A: Given: Moles of Fe = 10.980 moles

Q: How many moles of carbon are in a 0.58g of diamond?

A: Given: Mass of diamond = 0.58 g As, diamond is entirely made up of carbon, therefore mass of carbon…

Q: The molecule Al(OH), has Al atom(s), O atom(s) and v H atom(s). Therefor, the molar mass of Al(OH),…

A: Molar mass is the mass of a chemical element divided by the amount of substance (mol). It can be…

Q: 3. See the example in Introduction for set-up of calculations. Calculate the number of a) moles of F…

A: Number of moles of F and atoms of F in 32.5g of F2 calculated as follows

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.