A sample of a compound with the molecular formula C20H24N2O2 contains 2.75 x 1024 nitrogen atoms. What is the sample mass in grams? Report your answers to 3 s.f. and do not include units in your answer.

Q: Most chemistry laboratories have balances that can weigh to the nearest milligram. Would it be…

A: Given,  Molecules of C18 H38 = 5.88E+18 molecules The mass of C18 H38 is:

Q: An Organic compound contains 59.00% by mass C, 7.15% by mass H, 7.65% by mass N, and 26.20% by mass…

A: Given data is as follows: The elements are given in percent which is out of 100. So, the mass of C =…

Q: What is the mass of 3.01 x 1023 atoms of FeO? Round to two decimal places.

A: a) Given  mass of AgNO3 = 5,398 grams  molar mass of AgNO3 = 169.87 g/mol Conversion factor - 1 mol…

Q: Calculate the mass in grams of a sample of NO2 that contains 1.000 x 10^25 molecules.

A:

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Here we are required to find the percentage of anhydrous copper chloride

Q: An empty erlenmeyer flask weighs 241.3 g. when filled with water (density - 0.997 g/mol), the flash…

A: Given: Mass of empty Erlenmeyer flask = 241.3 g. Mass of Erlenmeyer flask with water = 489.1 g. And…

Q: 1.) Calculate the molar mass of the given compounds.           A) P 2 O 5                B) Al…

A: Given : A) P2O5 B) Al (ClO3)3 C) NaNO3 To find : Molar mass  Solution : Molar mass of the Compound…

Q: A sample of H2O that contains 3.79 ×10^25 water molecules is what amount of water (in moles)? What…

A: The number of moles is the mass of the substance upon the molar mass. The number of moles is also…

Q: What is the mass percentage of carbon in C6H12O3? Express your answer as a percentage (i.e., out of…

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Q: The percentage by mass of nitrogen is 46.7% for a species containing only nitrogen and oxygen.…

A:

Q: 4.104. When 2.750 g of the oxide Pbạ O4 is heated to a high temperature, it decomposes to produce…

A: Pb3O4     ------>     O2   +  PbxOy Mass of Pb3O4 = 2.750 g  Molar mass of Pb3O4 =  685.6 g/mol…

Q: Given the following mixture of two compounds 50.00 mL of X (MW =82.00 g/mol)(density 1.034 g/mL) and…

A: Mass percent or % w/w : It is the mass of solute present in 100g of solution % w/w = Mass of solute…

Q: How many moles of Cu(NO3)2 are in 3.4 x 1022 molecules? Please have your answer in decimal format…

A:

Q: A sample of 5.304 grams of a compound containing carbon and hydrogen reacts with oxygen at elevated…

A: Note: due to guidelines, we have to do 3 subparts.

Q: Calculate the mass in grams of 3.19 x 1024 molecules of propylamine. The chemical formula for…

A:

Q: Explain, in terms of the composition, why sample A represents a pure- substance. * B 8.

A: Those substances which have mass and occupies space is known as matter. Matter can be classified…

Q: How many grams are there in 1.22 x 1034 molecules of chromium (VI) oxide?

A: Mole of a substance or a mole of a particles is defined as exactly 6×10^23 particles which may be…

Q: If a sample of urea, CH4N2O is 55% pure, what is the percent by mass of nitrogen in this sample…

A: Given that -  Percentage purity of urea , CH4N2O is = 55%  Molar/atomic masses are -  C = 12.01…

Q: What is the average mass (in grams) of a single nitrogen dioxide molecule? A. 3.6 x 10-26 g B. 2.77…

A: Since mass of 1 molecule  = molar mass / Avogadro's number Molar mass of Nitrogen dioxide (NO2) = 14…

Q: If liquid bromine has density = 3.12 g/mL, how many Br2 molecules are present in a 1.0-mL sample of…

A: Given: Density of liquid bromine (d) = 3.12 g/ml The volume of liquid bromine =1.0 ml To find:…

Q: How many water molecules are in 6.00 raindrops? Assume that there are 20.0 raindrops in 1.00 mL of…

A: Density is defined as: It is the ratio of mass per unit volume 1 mole of any chemical species…

Q: 1.28 x 1023 molecules of C10H22 would have what number of carbon atoms? How many moles are there in…

A:

Q: How many grams will 8.53 x 1023 molecules of C6H12O6 (180.16 g/mol) weigh?

A:

Q: 5. A bottle of Ibuprofen (C,,H,,O,) contains 1.204 x 1024 molecules. How many grams of ibuprofen are…

A: The molecular weight is 206.29 g/mol means 1 mol of ibuprofen = 206.29 g of ibuprofen

Q: What are the masses of the four different BrCl molecules? Express the masses in atomic mass units…

A: Isotopes - Isotopes are two or more atoms having the same atomic number but different mass numbers.…

Q: F. How many oxygen molecules are in 2.40 g of O2(g)? A: 4.52 x 1022

A: Given : Mass of O2 = 2.40 g

Q: compound containing Sodium, Chlorine, and Oxygen is 25.42% Sodium by mass. A 3.25-gram sample gives…

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Q: The number of grams of 1.38 x 1022 molecules of C12H22011 is: 0.0229 g 7.84 g 342 g 2.29 g

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: What is the mass in grams of 5.57 × 10¹⁵ molecules of SO₂?

A: We know that , 1 mole = 6.023x1023molecules/atoms/ions.1 mole = molar mass of molecule .6.023x1023…

Q: Calculate the mass in grams of 1.8 x 1017 KCl molecules.

A:

Q: Given the following mixture of two compounds 65.00 g of X (MW =69.00 g/mol)(density 0.830 g/mL) and…

A: Mass percentage of any substance is expressed as the mass of the substance divided by the total mass…

Q: mmonium nitrate: NHẠNO3(s) N20(g) + 2H209) How many g of dinitrogen monoxide can be made from 1.62 x…

A: In this question, we want to determine the mass of N2O gas in gram unit.  You can see details…

Q: 9. How many molecules are there in 2.3 grams of NH4SO2? 10. How many grams are there in 3.3 x 1023…

A: 9.)

Q: How many fluorine atoms are present in 5.38 g of C2F4? Express your answer to three significant…

A: The value is given as follows:

Q: What is the mass in grams of 6.56 x 1022 molecules of lactic acid (C3H6O3), the compound responsible…

A: 1- First we need to calculate the moles of lactic acid :  Moles of lactic acid = [ number of…

Q: 1. How many molecules are there in 150 g of C12H22O11?

A: Given :-we have to find how many moleculerare there in 150 gm of C12H22O11

Q: What is the mass, in grams, of 1.51 x 1018 atoms of gold present in one nanoparticle? i

A: First of all calculate the number of moes of gold constitute the given number of atom. Then…

Q: Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown…

A: Given: Percent mass of carbon = 67.31 %. Percent mass of hydrogen = 6.978 %. Percent mass of…

Q: Determine the empirical formula of the compound according to its elemental analysis:  38.13% C by…

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

Q: An ice freezer behind a restaurant has a freon leak, releasing 48.73 g48.73 g of C2H2F3Cl into the…

A: Given: Total mass of C2H2F3Cl released per week = 48.73 g. And total months passed = 6 months.

Q: Part A. What is the mass of 9.50 moles of magnesium chloride, MgCl2? Express your answer with…

A: Part A: Calculation of mass of MgCl2 : The number of moles of MgCl2 = 9.50 moles The mass of a…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Here we are required to find the percentage of water.

Q: You wish to prepare 232 grams of 24.0 % Cr(NO3)3. You will need_________ grams of chromium(III)…

A: Mass percentage is defined as the total mass of the substance( here Cr(NO3)3 ) divided by total mass…

Q: A fictional cubed-shaped bacterium, Bacterius cubis, occupies a volume of 2.8 femtoliters. This…

A:

Q: Dichlorobenzene has a molecular formula of C6H4Cl2 (MW=147.00 g/mole).      What mass of…

A: Given, dichlorobenzene 1.81x1024 total atoms

Q: A. Calculations for the Determination of Ammonium Chloride The data from the data entry portion of…

A: Given that, Mass of evaporating dish, w1 = 38.478 g Mass of evaporating dish + original sample, w2 =…

Q: Aspirin can be prepared from salicylic acid (C7H;O3), which has a molar mass of 138.12 g/mol, and…

A:

Q: Part B How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce…

A: Balanced equation: CO2 (g)  +  4H2 (g)  -----> CH4 (g) + 2H2O (g) Number of mol of methane =…

Q: What is the mass, in kg, of 1.25x1024 molecules of BF3?

A:

Q: 7. Calculate the molar mass of each of the following compounds. a. Fe,O,, iron(III) oxide b. BCl,…

A: Molar mass is the sum of atomic masses of all atoms present in the given Molecule.    Percentage…

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.