Determine the number of moles of the compound and determine the number of moles of each type of atom in each of the following:(a) 2.12 g of potassium bromide, KBr(b) 0.1488 g of phosphoric acid, H3PO4(c) 23 kg of calcium carbonate, CaCO3(d) 78.452 g of aluminum sulfate, Al2(SO4)3(e) 0.1250 mg of caffeine, C8H10N4O2

Q: What is the molecular mass of iron (III) oxide (Fe2O3)? Enter your answer rounded to four sig figs,…

A:

Q: How many moles of theobromine are there in 5.72 x 1026 molecules of theobromine?

A: 1 mole of substance has Avogadro's number that is 6.022x1023 molecules or atoms NA = 6.022*1023…

Q: A patient is having an allergic reaction and takes a 50.0 mg tablet of the over‑the‑counter…

A: Given, Mass of diphenhydramine hydrochloride = 50.0mg. Moles of diphenhydramine hydrochloride can be…

Q: How many grams do 5.8 X 1020 molecules of ibuprofen (advil, C13H18O2) weigh?  molar mass of…

A: Molecular formula of ibuprofen is C13H18O2 . We Know, Mole = mass / Molar mass. Or, Mass of…

Q: 7. How many molecules are there in 24.0 g of ethylene glycol, HO(CH)OH?

A: The number of moles is defined as the ratio of the mass of a substance to its molar mass. Number of…

Q: Calculate the percentage by mass of the indicated element inthe following compounds: (a) carbon in…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: How many moles of hydrogen are in 3.06 × 10⁻³ g of glycine C₂H₅NO₂?

A: Introduction: Mole is the fundamental (SI) unit that is used to measure the amount of substance. By…

Q: What mass of dinitrogen monoxide N2O, contains the same number of molecules as 3.00 g of…

A:

Q: a sample of pure alumina hydrate was obtained from a bag of flame retardant. A 5.000g sample of the…

A: Given, Mass of sample = 5.000g. Final weight of sample after heating = 2.651g. The mass of water in…

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: Acetaminophen, C8H9NO2, is a covalent compound and the active ingredient in several popular…

A: The formula of the compound Acetaminophen is C8H9NO2. Hence each molecule of C8H9NO2 contains 1) 8…

Q: Calculate the percentage by mass of the indicated element in the following compounds: (d) platinum…

A: The mass percentage of an element in the given molecule can be determined by the molar mass of a…

Q: The molecular formula for benzene is C6H6. What is its empirical formula?

A: We have to predict the empirical formula of benzene.

Q: g figs 6. How many moles of calcium chloride are in 2.25 x 10 molecules of calcium chloride?

A:

Q: What is the mass percent of iron in iron(II) oxalate, FeC2O4?

A: From the molecular formula we can get the molar mass from there we can get the weight of the…

Q: Acetaminophen, an analgesic and antipyreticdrug, has a molecular mass of 151.2 u and a masspercent…

A: Given that:                  Molecular mass of acetaminophen = 151.2 u…

Q: 1. The number of ammonia (NH3) molecules present in 4.85 grams of NH3 is: 2.…

A:

Q: A compound with the rather imposing name 2,2'-azo-bis-isobutyrylnitrile is used to initiate the…

A: Given : molecular formula of compound is = C8H12N4. To find : type of atom and number of atoms and…

Q: Acetylsalicylic acid, which is C9H8O4, is more commonly known as the active ingredient in Aspirin.…

A: Molar mass- The mass of one mole of a substance in grams is called molar mass. The numerical value…

Q: The chemical formula of lysine (a building block of proteins) is C6H14N2O2. Given that the formula…

A: Given, Formula mass of lysine, C6H14N2O2 = 146.19 amu = 146.19 g/mol

Q: Paris green is a highly toxic emerald green compound with the formula Cu(C2H3O2)2 x 3Cu(AsO2)2. What…

A: Given             The formula of the Paris green

Q: The molar mass of the potassium alum salt, KAl(SO4)2 ● 12 H2O is?

A:

Q: A sample of 7.2 moles of the ionic compound, potassium dichromate, K2Cr2O7, is present. How many K+…

A: Applying concept of avogadro number. 1 mole = 6.022× 1023 atom/ molecules/ ions

Q: 2. What is the molar mass of lead (IV) nitrate, Pb(NO3)4?

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first…

Q: How many molecules of ammonium nitrate, NH4NO3,  are there in 3.96 moles of ammonium nitrate?

A: Given : Moles of NH4NO3 = 3.96 mol

Q: Calculate the molar mass of each of the following compounds:(a) hydrogen fluoride, HF(b) ammonia,…

A: Since your question has multiple sub-parts, we will answer the first three sub-parts for you. If you…

Q: How many atoms of silicon are in 0.75 mol of disilicon hexahydride, Si2H6?

A: Moles of Si2H6 = 0.75 mol No. of atoms of Si in Si2H6 = ?

Q: 5. The empirical formula of a compound is CH, If the molar mass of this compound is about 13, what…

A: Given: The empirical formula of compound=CH The empirical formula mass = 12 x 1 + 1 x 1…

Q: A patient is having an allergic reaction and takes a 12.5mg tablet of the over‑the‑counter…

A: The mass of the tablet is = 12.5 mg = 12.5 x 10-3 g The molecular formula of diphenhydramine…

Q: An elemental analysis of the acid indicates that it is composed of 5.89% H, 70.6 % C and 23.5% O by…

A:

Q: The chlorophyll-a molecule (C55H72MgN4O5) is important in photosynthesis. (a) Determine its…

A: a) Since molecular mass = sum of ( Atomic mass of atoms X number of atoms in the molecule)  Hence…

Q: A compound has a molar mass of 28.06 g. What is its chemical formula if carbon and hydrogen are…

A: In this question, chemical formula of the compound is to be determined which consists of carbon and…

Q: The recommended daily intake of salt, NaCl, is about 1 teaspoon = 2.3 g salt.  If the molar mass of…

A: Given  Mass of NaCl  =  2.3 gram  Molar mass of NaCl  = 58.44 gram/mole Number of atom of NaCl = ?

Q: How many grams of diazine (N2H2) are there in 1.351.35 mol of the compound?

A: Given:Number of moles = 1.35 molesMolar mass of diazine = 30.02928 g/mol.

Q: Calculate the molar mass of each of the following:(a) the anesthetic halothane, C2HBrClF3(b) the…

A: molar mass of a substance is the mass of the substance in1 mole .

Q: 3. How many moles of chlorine atoms are there in 10.000 moles of sodium chlorate? How many grams of…

A: Note: Providing solution for question 3 as asked. Given, moles of sodium chlorate (NaClO3) = 10.000…

Q: C2H2O is the empirical formula for Ethanone. Asprin has the formula C9H8O4 how do I get this answer?

A:

Q: What is the molar mass of Mg3(PO4)2, a substance formerly used in medicine as an antacid?

A: Molar mass of Mg3(PO4)2 is calculated as,

Q: Calculate the mass in grams of 1.35 mol of     a) titanium white, TiO2 , used as a paint pigment.…

A:

Q: One of the hydrates of MnSO4 is manganese(II) sulfate dihydrate . A 69.7 gram sample of MnSO4  2…

A:

Q: Ethylenediaminetetraacetic acid (EDTA) is a chemical that binds metals such as lead, to treat lead…

A: EDTA is Ethylenediaminetetraacetic acid whose chemical formula is (C10H16N2O8)  Number of carbon…

Q: A substance has the molecular formula C6H12O2. What is its empirical formula?

A: A substance has the molecular formula C6H12O2. The empirical formula has to be given below.

Q: Calculate the percentage by mass of the indicated element inthe following compounds: (a) carbon in…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Batrachotoxin, C31H42N2O6, an active component of South American arrow poison, is so toxic that 0.05…

A: Given data : Mass of Batrachotoxin(C31H42N2O6) = 0.05 mg = 0.5 x 10-4 g Molar mass of Batrachotoxin…

Q: How many atoms of Carbon are in 0.51 mol of procaine, C13H20N2O2, a pain killer used by dentist?

A: Given Data:

Q: One of the hydrates of CoSO4 is cobalt(II) sulfate hexahydrate . A 71.1 gram sample of CoSO4 6 H2O…

A: Answer

Q: Quinine is used to treat malaria and has a molar mass of 325g/mol. If the empirical formula is…

A:

Q: Your doctor has diagnosed you as being anemic—that is, as having too little iron in your blood. At…

A: Answer:- This question is answered by using the simple concept of calculation number of atoms which…

Q: A patient is having an allergic reaction and takes a 25.0 mg tablet of the over‑the‑counter…

A: Given that, a patient has an allergic reaction and takes a 25.0 mg tablet of an antihistamine…

Q: Your doctor has diagnosed you as being anemic—that is, as having too little iron in your blood. At…

A: We have to predict the molecular mass , moles , and compound delivering more iron atoms.

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.