A sample of lead (IV) chloride, PbCl4, weighs 2.687 g. How many moles are in this sample?

Q: Complete the table. Number of Particles (atoms Substance Mass Moles or molecules) Ar 4.5 x 10-4 NO2…

A: Ar : Mass of Ar = moles x molar mass                   = 4.5 x 10-4 x 40                   = 1.80 x…

Q: Mass Number of Number of Molecules or Number of Atoms Substance (g) or lons Moles Formula Units…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Question attached

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 1. How many moles of Ca are there in a sample that contains 7.63x10²² calcium atoms? moles 2. How…

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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: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: (a) Given data contains, Mass of Ag=1.651 g. Mass of O=0.1224 g.

Q: One carrot may contain 0.63 mg of vitamin A (C20H30O). How many moles of vitamin A is this? x 10 mol…

A: Molar mass of Vitamin A = 286g/mol Mass of vitamin A= 0.63mg=0.00063g Moles= (0.00063/286) mol=…

Q: From the given empirical formula and molar mass, find the molecular formula of each compound. a.…

A: From the given empirical formula and molar mass, find the molecular formula of each compound. a.…

Q: How many moles of mercury are present in 102 g of mercury(1) oxide? a. 2.44 moles O b. 4.89 101…

A: 417.18 g of mercury oxide = 1 mole   1 g of mercury oxide= 1/417.18 1 g of mercury oxide= 1/417.18…

Q: How many chlorine atoms are in 12.2 g of CCl4?

A: To solve this problem we have to first calculate the number of mole of CCl4 then we will calculate…

Q: Convert 1.00 g of each element to moles. How many moles of magnesium are in 1.00 g? 1.00 g Mg = mol…

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Q: omplete the folowing sentences. 1. How many hydrogen ions (H+) are in a mole? . 2. What is the mass…

A: Fill in the blanks

Q: Which sample of magnesium chloride, MgCl2, contains the same number of moles as 69.6g of potassium…

A: Given the mass of potassium sulfate K2SO4 =69.6 gwe are asked to calculate the mass of  magnesium…

Q: How many grams of sugar C12H22011 that consists of 1.25 x 1024 atoms of hydrogens? Molar mass of…

A:

Q: 1. How many ATOMS of carbon, are present in 4.07 moles of carbon tetrabromide, CBR4? atoms of carbon

A: 1 mole of any substance contains Avogadro number of entities   i.e   1mole  = Avogadro number (NA)…

Q: One bottle of pain reliever ibuprofen (C13H1802) contains 500. tablets and one tablet contains 0.200…

A: Avogadro's Number : Avogadro’s number has been defined as the number of molecules in one mole of any…

Q: How many moles (of molecules or formula units) are in each sample? Express your answer in moles to…

A: Given A) 29.2 g NO2 B) 1.35 kg CO2 C) 45.9 g KNO3 D) 164.5 kg Na2SO4 moles (of molecules or formula…

Q: How many carbon atoms are present in a 13.5 g sample of this compound? A compound is composed of…

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Q: How many grams of sodium carbonate contain 1.773 x 10 17 carbon atoms? (A) 6.066 x 10-5 B 1.011 x…

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Q: Mass of Sample Moles of Sample Molecules in Sample Total Atoms in Sample 4.76 g C6H6 0.229 mol H2 O…

A: Mole concept of a Compound: One mole of compound is the mass of the compound weighing equal to the…

Q: 3. Which of the following is equal to one mole of calcium atoms? a 6.022 x 1022 atoms of Ca b 6.022…

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Q: how many moles (of molecules or formula units) are in each sample? express your answer to four sig…

A: We know , number  of moles in any species/compound is given as : =mass of given…

Q: Calculate the number of molecules present in each of the following samples.(a) 0.800 mol acetylene,…

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Q: How many moles of K are there in a sample of K that contains 4.79×1024 atoms?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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

A: Fluorine is a halogen compound, it belongs to the 17 group of the periodic table.

Q: Calculate the number of atoms of silver that are in 0.212 moles of silver. (Avogadro's number = 6.02…

A: Avogadro’s number, one mole of any substance (defined as its molecular weight in grams), is equal to…

Q: A sample of propane, C3H8, contains 13.8 molesmoles of carbon atoms. How many total moles of atoms…

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Q: How many particles are there in: 1. 2.00 moles of ammonia NH3? 2. 0.50 moles chlorine Mg3(PO4)h? 3.…

A: According to the mole concept - 1 mole of any Substance has = 6.023×1023 Molecules/atoms /particles…

Q: 20. How many grams are in 1.18 x 1021 HF molecules? H = 1.008 g/mole and F=19.00 g/mole 1.01 g 0.992…

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Q: A 21.8 g sample of water contains how many water molecules? O 8.23 x 1023 molecules O 7.29 x 1023…

A: Here we have to calculate number of molecules of 21.8 gram of water sample-

Q: How many molecules are in sample? 19.3 g C8H10

A: Evergy compound/substance carries a specified relation between its moles and its molecules. This…

Q: A compound contains arsenic and oxygen as its only elements. A 1.626 g sample of the compound…

A: For finding the emperical formula, first find out the number of moles of each component. Then divide…

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: How many moles of CaCO3 are there in an antacid tablet containing 0.514  g CaCO3?  How many formula…

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Q: Complete the following calculation and upload your work. You have 5.63 x 1024 atoms of the…

A:

Q: Which of these are correct/ true?  A. 1 mole of He has the same amount of atoms than 1 mole of Ca B.…

A: There are some correct statements where are written with explanatios.

Q: The carat is the unit of mass used by jewelers, and it is exactly 200 mg. How many carbon atoms are…

A: In international system of unit, there are seven basic units. Out of those seven unit Mole is one of…

Q: How many atoms are present in 123 g of sodium cyanide (cyanide = CN-)?

A: Dear student since it is a multiple type question, according to guidelines here I am solving only…

Q: One mole of glucose C_6 H_12 0_6 contains how many hydrogen atoms

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Q: 1. How many GRAMS of iron(II) carbonate are present in 1.93 moles of this compound ? grams. 2. How…

A: Formula used :-  Number of moles :- given mass/molar mass

Q: 5) How many moles are in 54.4 grams of water (H,O)? 6) How many grams would 8.88 x 10 atoms of NaCl…

A:

Q: many molecules are contained in each compound? a. 1.35 mol of carbon disulfide (CS2) b. 0.254 mol of…

A: Since you have asked multiple questions we are solving first question for you. For remaining…

Q: 1. How many ATOMS of silicon are present in 2.01 moles of silicon dioxide ? atoms of silicon. 2. How…

A: 1) Given data,  Moles of silicon dioxide (SiO2) = 2.01 mol

Q: A compound has a formula of P4O6. What is the weight of one mole of this compound in grams? How…

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Q: What is the molar mass (g/mole) of cream of tartar (KHC4H4O6)?

A: The compound given is KHC4H4O6  Hence each molecule of KHC4H4O6 has  1) 1 Atom of K with atomic mass…

Q: 4. The Russian Space Agency uses potassium superoxide (KO2) for the chemical oxygen generators in…

A: the given equation is  4KO2 + 2H2O + 4CO2 ------> 4KHCO3 + 3O2 given mass of O2 is 380g

Q: How many total atoms are in 0.940 g0.940 g of P2O5

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

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

A:

Q: How many grams of sugar C12H22011 that consists of 1.25 x 1024 atoms of carbons? Molar mass of…

A: Number of atom of carbon = 1.25 × 1024 atoms Number of atoms of carbon = number of moles × Avogadro…

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.