at is the percent composition of chloroform, CHC1, a substance e used as an anesthetic? (C: 12.01amu; H: 1.008 amu; Cl: 35.45amu) C (%) н (%) CI (%) A 12.08 .9865 87.05 В 10.06 .8442 89.07 C 9.256 1.265 78.65 8.978 .8965 90.12 E 7.956 .7896 91.25

Q: Analysis of an unknown hydrocarbon (CHy) revealed that the compound was 81.68% C. The subscript for…

A:

Q: How many hg of oxygen are in 9.999 pg of cobaltous phosphite nanohydrate? The answer is 4.829 x…

A: Here we have asked how many hg of oxygen are present in 9.999 pg of cobaltous phosphite nanohydrate?…

Q: Use the equeation for questions below Cl2+F2 -->ClF3 How many grams of CLF3 form from 130.0 grams…

A: The value is given as follows:

Q: 77. A binary compound of boron and hydrogen has the following percentage composition: 78.14% boron,…

A: Determination of empirical formula The percentage composition of elements present in given compound…

Q: In this reaction: Mg (s) + I2 (s) → Mgl2 (s), if 10.0 g of Mg reacts with 60.0 g of l2, and 57.14 g…

A: Given,     Mass of Mg = 10.0 g     Mass of I2   = 60.0 g     Actual yield of MgI2 = 57.14 g

Q: lable Below, what is the percent composition of A in the compound A2E? Round to the nearest 0.01 and…

A: Given-> Atomic mass of A = 9.68 g/mole Atomic mass of E = 42.59 g/mole

Q: 4. What is the percent by of oxygen in ethylene glycol, C,H,(OH),? mass The answer is

A: The molecular formula of ethylene glycol is = C2H4OH2 The mass percent of oxygen in ethylene glycol…

Q: A major component of gasoline is octane (C3H18). When octane is burned in air, it chemically reacts…

A: The balanced reaction for burning of octane is  2 C8H18 + 25 O2 -----> 16 CO2 + 18 H2O Hence from…

Q: of

A: moles= given mass /molecular mass We have 0.730 mole of CS2 Molecular mass =76.13g/mol Mass of CS2=…

Q: A 5.000 g sample that contained NaCl and BaCl2*2H2O was heated. After heating, the sample had a…

A: Number of moles of barium chloride and water is determined as given below:

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: learn.lcps.org/common-assessment-delivery/start/4846618960?action=Donresume&submissionld=492623761…

A:

Q: 7. How many moles of mercury (II) oxide (HgO) are needed to produce 125 g of oxygen (O )? 2H90 -->…

A:

Q: one of the ingredient in vibegar is ethanoic acid ethnoic acid has a 69g mol and the following…

A:

Q: Calculate the number of N atoms in 0.549 mg of NH4NO2. Answer in scientific notation

A: We have to calculate the number of N atoms in 0.549 mg of NH4NO2.

Q: A shot of espresso contains roughly 64mg of caffeine, C8H10N4O2.  - Provide the molar mass of…

A:

Q: How many grams are in 0.02 moles of beryllium iodide, BeI2? Round to the hudreths place (two decimal…

A: From Number of moles formula :                    number of moles = weight of the substance / gram…

Q: For the formula  K3N  What is the percent Nitrogen in the compound

A: Given, compound K3N Molar mass of K = 39 g/mol Molar mass of N = 14 g/mol

Q: The following compounds all contain oxygen: CO, CO2, Na2CO3, H2O.  Which of these compounds has the…

A: H2O is having the largest percent composition of oxygen.

Q: O How many molecules are in 8.1x10-3 mol of Carbon dioxide? How many Hydrogenatoms are in 77.29 g of…

A: here , Given moles of given using formula we can calculate the molecule of CO2 Tetraboric acid have…

Q: How many moles of water is 6.36 x 1022 molecules? No.of representative particles No. of moles = 6.02…

A: Given  Molecules of water = 6.36 x 1022 molecules

Q: Be sure to answer all parts. How many H atoms are in 61.9 g of isopropanol (rubbing alcohol), C,HgO?…

A: The mass of isopropanol is = 61.9 g The molar mass of isopropanol is = 60.1 g/mol The number of the…

Q: In one reaction, 0.308 moles of SiCl4 is produced. How many miles of molecular chlorine were used in…

A:

Q: `Nicotine (C10H14N2), a plant alkaloid, is an oily liquid that makes up between 0.6 to 3% of a…

A:

Q: Suppose 2.60 g of chlorine, Cl2, are used to prepare dichlorine pentoxide, Cl2O5. How many moles of…

A: Ans. Dichlorine pentoxide formation: (a) moles of oxygen             2Cl2+5O2 → 2Cl2O5      (2…

Q: In the past, laughing gas, N20, was given to patients before medical procedures because it slows…

A: In order to calculate number moles we need to calculate molar mass of NO2

Q: Peroxyacylnitrate (PAN) is one of the components of smog. It is a compound of C, H, N, and O.…

A: Since the total % of all the 4 atoms present in the compound should be = 100 %  Hence % of C + % of…

Q: 35. Determine the percent ammonia, NH3, in Co(NH3)6Cl3, to three significant figures.

A: Percentage by mass of any element in its compound is the amount of that element divided by the total…

Q: The human body excretes nitrogen in the form of urea,NH₂CONH₂. The key biochemical step in urea…

A: Formula of Urea is NH2CONH2  molecular mass of urea = 60 amu Formula of Arginine is C6H14N4O2…

Q: C3H6 molecule containing 18x1022 caarbon atoms; 1. It is 0,3 moles. II. Contains 06 grams of H. II.…

A: A option is correct. Number of moles,n = number of atoms / Avogadro's number n= 18× 1022/6×1023…

Q: Dimercaprol (HSCH₂CHSHCH₂OH) was developed duringWorld War I as an antidote to arsenic-based poison…

A: Dimercaprol has a molecular formula of C3H8OS2 and molar mass of 124.227 g/mol. To determine:…

Q: Q7) a compound is found to contain 40 % carbon, 6.7 % hydrogen, and 53 % oxygen by weight. What is…

A:

Q: |Methyl salicy!late, C,H,0, is used as a mint in some inds of alternative to the more common…

A:

Q: ONIIO_F3qHYTIQI6Ca5ojhYwiUE... O STOICHIOMETRY Finding mole ratios from chemical formulae This is…

A: We will find out how many moles of Hydrogen are present in the sample.

Q: O Previous Page 8 of 16 Next O Subm Silicon carbide, SiC, is one of the hardest materials known…

A: Silicon dioxide reacts with carbon to form carbon monoxide and silicon carbide. The equation for the…

Q: aler completng the lab. Answer in the space provided. 1. A student reacted 0.500 g of Pb(NO1)2 with…

A:

Q: many The empirical formula Of a compound of uranjum and tluorine that is composed - uraniom and 3…

A: Empirical formula is the chemical formula which represents the simple ratio of atoms of elements…

Q: • Sodium metal reacts with hydrogen to form sodium hydride (NaH) 2Na + H2---- 2 NaH If 10 grams of…

A: Given reaction --- 2Na + H2 ----> 2NaH  mass of Na =10 g, mass of H2= 8 g  moles of NaH = ?…

Q: The reaction of P4O10 with excess H2O produces phosphoric acid, H3PO4. How much phosphoric acid can…

A: Given information,      Mass of P4O10 is 125.3 g

Q: Zn + CuCl2 ZnCl, + Cu How many moles of ZnCl, will be produced from 23.0g of Zn?

A: Ans

Q: Calculate how many moles in .750 g of Na2C03 0.0071 141 79.5 0.00708 none of the above OOO

A:

Q: A 0.1005 g sample of menthol (a compound comprised of C, H and O) produces 0.2829 g of carbon…

A: Mass of menthol = 0.1005g Mass of CO2 =0.2829 g Mass of H2O =0.1159 g

Q: If PCL5=0.012 and PCL3 =0.068 and Cl2=0.068 what fraction of PCl5 has decomposed

A:

Q: An elemental analysis of a compound containing S and O produce 50.00 % S and the rest is oxygen.…

A:

Q: Be sure to answer all parts. Cinnamic alcohol is used mainly in perfumery, particularly in soaps and…

A:

Q: How many mol of C10H22 would you have if you have 90.13 grams? Answer to 2 decimal spaces.

A: Given : mass of C10H22 = 90.13 g  To calculate : number of moles of C10H22

Q: What is the percent by mass of H in cyclopentane (C5H10)? The molecular weight of carbon is 12.0107…

A:

Q: Be sure to answer all parts. How many H atoms are in 61.9 g of isopropanol (rubbing alcohol), C,HgO?…

A: SOLUTION   Mass of isopropanol = 61.9 g   Molar mass of isopropanol = 60.1 g/mol   Moles of…

Q: Part C In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol).…

A: Here we have to determine the moles of Cl2 present in 150 g of Cl2 and the mass of 2.90×10^22…

Q: Aspirin, C9H8O4, is a common pain reliever and is also often given in low doses daily for prevention…

A: Given,  Moles of aspirin ( C9H8O4) sample = 0.0745 mol.  The mass of aspirin in the sample is:

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.