What is the total number of atoms in each sample? 0.331 mol of Cr   2.783 mol of ethanol 0.0361 mol of CuSO4 1.056 mol of Gold

Q: A compound contains only C, H and S. Combustion of 45.0 g of the compound produces 75.4 g CO2 and…

A: Since all the carbon in CO2 is coming from the compound only  Hence moles of C in CO2 =  moles of C…

Q: What is the molecular formula of an unknown compound which is composed of 57.14% carbon, 27.18 %…

A: Molecular formula = (Empirical formula)n where n = No of empirical formula components that combine…

Q: What is the mass of 4.22 mole of Cl2   How many Cl2 molecules are in 4.22 mole of Cl2

A:

Q: An antifreeze and coolant widely used in automobile engines is 38.7% carbon, 9.7% hydrogen, and…

A: Given: antifreeze and coolant widely used in automobile engines is: 38.7% carbon 9.7% hydrogen…

Q: 6. The composition of a given substance is as follows: 3.5 mol C, 2.52 g H, 24.0 g O, 3.01 x1023…

A:

Q: An ionic compound was formed by combining 8.289 g of copper (Cu) with 1.218 g of nitrogen (N). What…

A: Given that, Mass of copper Cu = 8.289 g Moles of Cu in 8.289 g = 8.289 g/63.546 g/mol = 0.13044 mol…

Q: Cortisone consists of molecules, each of which contains 21 atoms of carbon (plus other atoms). The…

A: The given data: The number of carbon atoms present in cortisone = 21 The mass % of the carbon in…

Q: What is the elemental composition of mercury(I) nitrate, Hg2(NO3)2? Report the mass percent of each…

A: Answer:- This question is answered by using the simple concept of calculation of percent of each…

Q: Ethanol, CH3CH2OH, is the principal type of alcohol found in alcoholic beverages, produced by the…

A:

Q: Sugars can be metabolized to lactic acid by Streptococcus mutans, a bacterium that lives in the oral…

A: Given : Mass percent of C = 40.0 % Mass percent of H = 6.71 % Mass percent of O = 53.3 % And molar…

Q: A sample of naphthalene was analyzed in the laboratory and it was determined that the sample…

A: Number of moles (mol) = Given mass (g)Molar mass (g/mol)Given that:Number of moles= 0.457 molesMolar…

Q: How many moles of Cl2 does 2.41 x 1024 formula units represent (Cl = 35.45 g/mol)

A: Answer - According to the question - Given values - 6.022*10^23 formula represent  = 1 mole of Cl2…

Q: a. How many ATOMS of boron are present in 5.24 grams of boron trifluoride? atoms of boron. b. How…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Also, Number of atoms…

Q: A compound is 7.7% (by mass) hydrogen and 92.7 % carbon. It has a molecular weight of 52 g/mole.…

A: Empirical formula are the formula which represent simplest ratio of an element present in a given…

Q: 3. What is the mass in grams of each quantity of lactic acid (C3H6O3), the compound responsible for…

A:

Q: 1- Determine the mass of 6.46 mol of Pb, H₂SO4? 2- Determine the moles in 125.0 grams of nickel,…

A:

Q: A compound has the following percentage mass composition: 71.35% carbon, 12.00% hydrogen, and 16.65%…

A: Here, Mass percent of C = 71.35%. Molar mass of C =12g/mol. Mass percent of H =12%. Molar mass of H…

Q: For each of the following gemstones, determine the mass of compound present in the given moles of…

A: Given  1) Formula = Be3Al2(SiO3)6     Number of mole = 0.0170 mole        mass    = ? 2) Formula   =…

Q: You determine the empirical formula of a compound to be CH3. In a separate experiment, you determine…

A:

Q: How many molecules are in 119.78 g of butane (C4H10)?

A: Mass of butane = 119.78 g  Number of molecules of butane = ? • Number of moles = mass / molar mass…

Q: How many moles of iron are in 3.55 x 1025 atoms of iron?     59.0 mol     6.36 x 1023 mol…

A: We have to determine moles of iron present in 3.55 x 1025 atoms of iron

Q: How many atoms are in a 3.56 g sample of Cu?

A: In order to determine atoms we have moles.

Q: An unknown compound has the following chemical formula: Mn (CN) where x stands for a whole number.…

A: Mole of carbon= 5.9Mole of Mn = 3.0

Q: a) A compound is found to contain 52.13 % carbon, 13.15 % hydrogen, and 34.72 % oxygen by mass.What…

A: (a) Given: Mass percent composition of hydrogen is 13.15% Mass percent composition of carbon is…

Q: How many atoms are contained in 12 g of water? O 2.4 x 1024 O 1.2 x 1024 4.0 x 1023 O 1.3 x 1023

A: To calculate the number of atoms in 12 g of H2O Molar mass of H2O = 18 g/mole Now we calculate moles…

Q: What is the mass of 2.00 mol of chlorotrifluoromethane?     52.1 g     209 g     104 g…

A: Given,  Moles of chlorotrifluoromethane = 2.00 mol.  The mass of chlorotrifluoromethane is:

Q: What is the empirical formula of X

A: The empirical formula of the compound can be calculated with the help of percentage composition of…

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.