How many mol (moles) are contained in a 2.1g sample of lithium fluoride ?

Q: How many moles of sodium ions are contained in 8.67x10^-3 grams of NA2SO3? The molar mass is…

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A: Molar mass of water = 2 • ( molar atomic mass of H ) + molar atomic mass of O  Molar mass of water =…

Q: Suppose a 17.8640 g sample of a NaCl and KCl mixture contains 3.5286 g of NaCl. What is the percent…

A: The mass percent of the component in the mixture can be calculated by using the below formula- Mass…

Q: A flask contains 0.390 mol of liquid bromine, Br2. Determine the number of bromine molecules present…

A: Given, Number of moles = 0.390

Q: Consider an alternate universe in which Nickel has a molar mass of 63.45 g/mole. Use this…

A: Step 1:Step 2:

Q: Complete the table below for calculating the molar mass of the compound phosphorus triiodide. Molar…

A: Moar mass of Phosphorus = 30.973762 g/mol  Molar mass of Iodide = 126.90447 g/mol

Q: how many molecules of water are present in 75.0 g of H20?

A: 1 mole of water that is 18 g contains 6.022 * 1023 molecules.

Q: Calculate the moles of ammonia present in a 4.389 g sample of ammonia, which has a molar mass of…

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Q: Complete the table below for calculating the molar mass of the compound carbon tetrachloride. Molar…

A: The complete table for the molar mass of the compound carbon tetrachloride is given below, 1mole of…

Q: The number of molecules in a sample of NH3 weighing 8.50g?

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Q: How many sodium atoms are present in 17.06g of NaCl?

A: Given : Mass of NaCl = 17.06 g Molar mass of NaCl = Atomic mass of Na + Atomic mass of Cl  =>…

Q: How many hydrogen atoms are present in 75.0 of g H2O?

A: Mass of water, H2O = 18.016 g/mol Mass of water = 75 g Moles of water, H2O = Mass Molar mass=75…

Q: How many molecules are present in 1.36 g of AgNO3?

A: Given : Mass of AgNO3 = 1.36 g

Q: How many grams are in 3.4x10^23 molecules of H2CO3

A: Given, Molecules of H2CO3 = 3.4*1023 Mass of H2CO3 = ?

Q: A chemist weighs 50.0 grams of solid NaOH. a) How many moles of NaOH are in the sample? [ Select ]…

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Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

A: Given: Mass of sample = 1.000 g Mass of CO2 formed = 2.579 g Mass of H₂O formed = 0.6536 g Molar…

Q: How many moles of potassium cyanide, KCN, are present in a sample containing 67.1 grams of the…

A: Given, Mass of potassium cyanide (KCN) = 67.1 g Moles of potassium cyanide (KCN) = ? Note:  Molar…

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

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Q: How many g of C4H4S2 are equivalent to 5.40 moles of this compound?

A: Answer: 627.48 g

Q: Part D. A 28.50 g sample of a compound of carbon, sulfur, hydrogen, and combusted (burned). 35.25 g…

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Q: Determine the number of molecules present in 0.19 g of CO2.

A: Given, Weight of CO2 = 0.19 g Molar mass of CO2 = 44 g/mol

Q: Caculate the number of moles in 0.220 g of calcium carbonate.

A: Number of moles of a particular substance or compound can be calculated by dividing the given mass…

Q: chloral hydrate (C2H2Cl3O2) is a drug formerly used as a sedative and hypnotic. It is the compound…

A: We are to calculate the molar mass of chloral hydrate, C2H3Cl3O2 . Chloral hydrate is a drug used as…

Q: Calculate the moles of ammonia present in a 7.040 g sample of ammonia, which has a molar mass of…

A: Given, mass of ammonia = 7.040g  Molar mass of ammonia = 17.030gmol-1  Moles of ammonia = ?  Note :…

Q: Complete the table below for calculating the molar mass of the compound sulfur trioxide. S O Molar…

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Q: How many moles of atoms are contained in 15.5 g of Br2 ?

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Q: A mixture contains 0.291 mol of Mn2O3 and 23.5 g of MnO2.  How many mols of Oxygen are in the…

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

Q: How many C atoms are present in a 5.03 ng sample of nitrobenzene, C6H5NO2?

A: In this question, we will determine the number of C atoms in the given mass of Nitrobenzene sample.…

Q: Convert 40.0g K3PO4  to molecules of K3PO4 . choose the correct multiple choice underneath. 40.0…

A: Given mass of K3PO4  = 40 g

Q: mercury occurs as a sulfide one called cinnabar, Hgs. How many moles of HgS are contained in a…

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Q: A compound is 7.7% (by mass) hydrogen and 92.7 % carbon. It has a molecular weight of 52 g/mole.…

A: Empirical formula are the formula which represent simplest ratio of an element present in a given…

Q: How many number of moles are present in 100 g of CaCO3?

A: The number of moles of a compound can be calculated by the ratio between mass of the compound to its…

Q: number

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Q: How many moles of water, H2O, are present in 75.0 g of H2O?

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Q: Calculate the molar masses for NH, and SF. NH, molar mass: SF molar mass: How many grams of NH3 are…

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Q: How many H atoms are present in a 6.43 ng sample of nitrobenzene, C6H5NO2?

A: Step 1: Calculation of moles of nitrobenzene Given,mass of nitrobenzene = 6.43 ng = 6.43 ng × ( 10-9…

Q: What is the amount of H present in the original sample, in moles?

A: We have moles of H2O in the compound = 0.00610   (= Given mass of water (0.110 g) divided by the…

Q: How many molecules are present in 4.61×10^2 mol of O2?

A: Given data, Number of mol of O2 = 4.61 × 102 Calculating the molecules present. Therefore, The…

Q: A flask contains 0.200 mol of liquid bromine. Br2. Determine the number of bromine molecules present…

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Q: A 1.7500 g sample of a zinc compound (“ZnX”) contains 0.8400 g of zinc. What is the molar mass of…

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Q: Calculate the number of moles of 100.0 g of BaSO4.

A: Since we know that number of mole an compound is calculated as given below formula Number of moles=…

Q: the molar mass of a strange new compound is 95.2 g/mol, how many moles of the compound are in 157.00…

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Q: How many moles of O2 molecules are present in a 2.00 mole sample of SO2Cl2 ?

A: A compound is a pure substance. And according to the Law of Constant Proportions, the elements…

Q: How many grams of H2 are needed to produce exactly 4.14 moles of NH3?

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Q: 4. How many moles of oxygen are used when 2.22 moles of carbon dioxide are produced? 10 6 c 11_0₂…

A: Answer:When a hydrocarbon is burned in presence of oxygen and formation of water and CO2 takes…

Q: how many molecules are present in 0.340g of lead (IV) phosphate?

A: The number of molecules in 0.340g of lead (IV) phosphate are to be calculated. The mass of compound…

Q: What is the molar mass of SO2?

A: The molar mass of a compound or molecules is the sum of the masses of all the atoms present in it.…

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.