1. a. What is the empirical formula of a compound with the following mass composi- tion: 40.92% C 4.58% H 54.50% 0? b. The molar mass of this compound is 176.1 g/mole. What is its molecular formula?

Q: (a) Does the percent by mass of each element in a compounddepend on the amount of compound? Explain.…

A: a) In a molecule of calcium chloride, there is one calcium atom and two atoms of chlorine. The total…

Q: A.How many grams of chromium(III) oxide, , are present in 2.46 moles of this compound? grams_____…

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

Q: a. How many grams of barium carbonate, BaCO3, are present in 1.73 moles of this compound? grams b.…

A:

Q: 1. The most abundant form of carbon has an atomic mass number A = 12, and a molar mass of 12 g/mol.…

A: We have to calculate the moles of carbon.

Q: 1. How many GRAMS of boron are present in 1.31 moles of boron trifluoride ? grams. 2. How many MOLES…

A: Given: The number of moles of boron trifluoride is 1.31 moles. The chemical formula of boron…

Q: 1. a) Determine the empirical formula of a compound with the following percent composition: 55.80 %…

A: empirical formula  of a compound is simplest positive number of atoms in compound

Q: A binary covalent compound contains 78.3% baron and the rest is hydrogen. Its molar mass is…

A: We have  Percentage of Boron (B)=78.3% Percentage of Hydrogen (H)=100-78.3=21.7% Atomic mass of…

Q: A molecular compound is found to consists 30.4% nitrogen and 69.6% oxygen. if the molecule contains…

A: Given Composition of N = 30.4 % Composition of O = 69.6 %

Q: 1. a.) How many moles of sodium in 0.46g of sodium? b.) How many atoms of sodium are in 0.46g of…

A: The number of moles (n) of a substance can be calculated as: n=Given massMolar mass······(1) One…

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

A: One mole of a species contains avagadro number of atoms , molecules and ions

Q: 1) How many zinc (Zn) atoms are contained in 5.16 moles of Zn?

A: Mole is described as the amount of a substance which consist of  exactly the Avogadro number of…

Q: A fuel tank used in a barbecue contains 9.8 gr. of total atoms of propane, C3H8(g)- a. What amount…

A: Because propane is made up only of carbon and hydrogen , the chemical formula is C3H8 . It's an…

Q: Lab 5. Counting Molecules 1. Fill in the table C12H22011 NH,CI Mass (g) 1.0015 1.0238 Molar Mass…

A:

Q: 1. An organic compound with a molar mass of 183.18 g/mol has the following mass percents ol each…

A: An organic compound is having molar mass = 183.18 g/mol Portion of Carbon = 39.34 %  of 183.18 = 72…

Q: Glycine, an amino acid used by organisms to make proteins,is represented by the following molecular…

A: Glycine is the simplest amino acid present. It is made up of an amine group and one carboxylic group…

Q: The percent composition by mass of a compound is 76.0% C, 12.8% H, and 11.2%0 At. wt. C= 12 g/mol O=…

A: The ratio of the distinct atoms which are presents in a compound in form of simplest positive…

Q: 3.4.4 Determine the empirical formula of a compound that has the following composition: 48.6 percent…

A: Empirical formula represents the smallest whole number ratio of the atoms in a molecule.

Q: 10. Make the following conversions: (a) 28.4 g S to moles S (b) 2.50 kg NaCl to moles NaCl (c) 42.2…

A: (a) Mass  of S = 28.4 g Molar mass of S = 32.06 g/mol Moles of S = mass of Smolar mass of S  = 28.4…

Q: 1) How many atoms does each molecule of H,SO, has? A) 8 B) 6 C) 7 2) A compound of carbon and…

A: we have to tell which option is correct from given choices of options by telling  number of atoms in…

Q: A compound that contains only carbon, hydrogen, and oxygen is 68.5% C and 8.63% H by mass. What is…

A: Empirical formula shows the relative ratio of various elements in a chemical compound. It gives the…

Q: Particular thermos can hold 473.2 ML of warm beverage. If the Thermo is filled with hot cocoa, which…

A: Given that,Concentration of the sugar = 0.23 M = 0.23 mol/L Capacity of the solution in thermos =…

Q: A compound containing carbon, oxygen, and hydrogen was found to have an empirical formula of CH,0.…

A: Empirical Formula is CH2O Formula mass of CH2O = 1 x Atomic mass of C + 2 x Atomic mass of H + 1x…

Q: MOLAR VIEW T03/S11 If a sample of (NH4)2HPO4 is found to contain 3.79 mol of NH4* ions how many…

A: The reaction can be written as follows: (NH4)2HPO4→2NH4++HPO42-

Q: 1. How many MOLES of dioxygen difluoride are present in 1.20 grams of this compound ? moles. 2. How…

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

Q: 2. Touprofen, the anit-inflammatory ingredient in Advil, has the formula C13HIBO2. a. How many…

A: We are authorised to solve only first three subparts of the question. Please post rest of the…

Q: How much C is present in 10.0 g of CO,? mass of C: How much H is present in 4.10 g of H,O? mass of…

A: 1. Mass of CO2 = 10.0 g We need to determine mass of C.  2. Mass of H2O = 4.10 g  We need to find…

Q: A sample of ethanol (C3H.OH) contains 4.2x102s hydrogen atoms. How many moles (n) of ethanol are in…

A: One mole of any substance contains 6.022×1023 particles.

Q: 8.00 g of iron when burned in air yields 11.44 g oxide. What is the empirical formula of this oxide?…

A: mass of oxygen= mass of oxide - mass of Fe(iron)

Q: 1. How many GRAMS of sulfur are present in 1.71 moles of sulfur tetrafluoride? 2. How many MOLES of…

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

Q: 6. Dopamine (C§H11NO2) is a neurotransmitter, a substance that sends signals from one nerve to…

A: The question is about to calculate the Percent composition by mass of each element in one mole of…

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: Name: NetID: 1. What is the molecular mass (in amu) and molar mass (in g mol) for chloroform…

A: We know that  Molar mass : The molar mass is the sum of mass of each element (g) present in Compound…

Q: Ethanol has a molecular formula of CH3CH2OH. 1.) What is the molar mass of ethanol? 2.) What is the…

A: 1) molar mass = sum of atomic mass of each atom present  in the molecule  Since in ethanol we have 2…

Q: 3. The average atomic mass of an atom is expressed in c. g/mol d. moles a. grams b. amu 4. Which…

A: The answer to the given question is as follows------------- The number of moles (n) = Mass (W)/Molar…

Q: 1. How many GRAMS of manganese(II) oxide are present in 2.43 moles of this compound ? ??? grams.…

A:

Q: A mothball, composed of naphthalene (C10 H8 ), has a mass of 1.50 g. Part A How many naphthalene…

A: 1 mole of any atom or molecule contains Avogadro's number of atoms or molecules. Avogadro's number =…

Q: Which of the following compounds contains the largest number of atoms?

A: 1 mol = 6.022 × 1023  atoms   We can calculate moles of each atom in a mole of compound. For example…

Q: (3.10: Similar to Example 3.17 & 18)Find the empirical formula of a compound containing 36.86%…

A: The empirical formula of a compound does not give the definite proportions of the element in a…

Q: A) 3.90 g H2O   mole (B) 6.44 g benzene, C6H6   mole (C) 32.00 g ethyl alcohol, C2H5OH   mole (D)…

A: Molecular weight amount of any compound contains avogadro number of molecules andit is termed as 1…

Q: How many moles of aluminum fluoride, AlF3, are present in a sample that contains 3.49 moles of…

A:

Q: The FM for a compound is 15.26. What is the mass of 1 mol of that compound

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

Q: Which has the most F atoms: 3 g CH3F , 3 g HF , or 3 g KF ?

A:

Q: A compound consists of 85.7%C and 14.3% H .  Its molar mass is 42.0g.  How do I find its molecular…

A: empirical formula : Simplest positive integer ratio of atoms present in a compound  Given  Carbon…

Q: of 7.5 x 10^23 atoms of Br? * A. 7,5x1batoms br x G02 MỖ atons Br Imol Br B. 7.5x1b tome br x_ Imol…

A:

Q: 51 Caffeine Caffeine, found in coffee, tea, chocolate, cola beverages is a highly popular stimulant…

A:

Q: (a) 275 atoms W to mol W        (c) 12 molecules SO2 to g SO2 (b) 95 atoms H2O to kg H2O

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: 1. How mány GRAMS of carbon are present in 4.42 moles of carbon tetrafluoride ? grams. 2. How many…

A: Part(a) To determine grams of carbon present in 4.42 moles of carbon tetrafluoride. One compound of…

Q: Given the answers to the previous questions, please answer part c (find the empirical formula)

A: Empirical formula of a compound represents the proportion of the elements in a compound irrespective…

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.