The molar mass of NO2 is 46.01 g/mole.  How many moles of NO2 are present in 114.95g?   A. 1.000mol   B. 0.4003mol         C. 8.98mol   D. 2.498mol   E. 114.95mol

Q: 13. How many oxygen atoms are in 225 g of O2? a. 4.23 x 1024 b. 6.84 x 1024 c. 8.47 x 1024 d. 1.69 x…

A: Number of Atoms of Oxygen can be calculated as -

Q: 7.0 g of nitrogen atoms contains     a.1 molar mass of nitrogen atoms b.2 molar mass of nitrogen…

A: As we know that, 1 mol of nitrogen atom contains 14 g of nitrogen. (Molar mass of N = 14 g/mol )…

Q: How many moles of oxygen atoms are in 8.18 grams of Mg(NO3)2?    a. 0.662 moles of oxygen    b.…

A: The moles of an element is calculated as the amount of the element present per mole of the compound…

Q: Calculate the molar mass of aluminum sulfate, Al2(SO4)3- A. 75.08 g/mol B. 213.96 g/mol C. 225.24…

A: Molar mass - It is the sum of atomic masses of all atoms present in one molecular formula

Q: A compound has an approximate molar mass of 84.00 grams/mole and an empirical formula of CH2CH2.…

A:

Q: 1. How many moles are present in 24.0 grams of Sb,S,? a. 1.31x10 mol b. 1.56x10 mol c. 5.94x10 mol…

A: (1) Number of moles of Sb2S5 can be determined by using the formula given below as: Moles of…

Q: 41.  0.8 moles of ferrous phosphate contains how many oxygen atoms?   A. 3.2 x 1024      B.…

A:

Q: Calculate how many moles are in 100. grams of KCIO4? 0.733 mol 1.033 mol

A:

Q: One mole of H₂O contains O a.3.0 1023 hydrogen atoms O b. 1.2 1024 hydrogen atoms c. 6.02 1023…

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

Q: Morphine (molar mass = 285.37 g/mol) is a narcotic %3D painkiller. How many moles of morphine are…

A: We know that : moles = weight of substance/molecular weight of substance  Or, moles (n) = weight…

Q: How many moles equate to 128 g of CO2? A. 2.91mol B. 15.6mol C. 5.82mol D. 24.6mol

A: Given : Mass of CO2 = 128 g

Q: Which sample has the largest number of oxygen atoms? a. 3.0 mol H20 b. 2.5 mol of CO2 c. 2.0 mol of…

A:

Q: The moler mass of sulfur tetrafluoride is A. 54.10 g\mol B. 358.60 g/mol C. 108.07 g/mol D.…

A:

Q: Calculate the number of moles for 280g of water, H2O? A. 15.6 mol B. 31.2 mol C. 8.65 mol D. 280…

A:

Q: You have a beaker containing 325.9mL of H2O and 14.55g of CaBr2. Calculate the mass percent.

A: Mass percentage ( % w/W ) :  mass of solute in grams present in 100 mL of solution is called mass…

Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: What is the mass in grams of 4.57 mol of ammonium sulfite, (NH4)2SO3? b. 0.00393 g c. 254 g a. 53.1…

A: The moles of  given = 4.57 molThe mass of = ?

Q: Match the correct number of nitrogens with the correct situation that you see below v 2 NH4NO3 A. 4…

A: Count the no. of N' atom by simply multiply by its coefficient.

Q: 9.to convert from moles of A to grams of A you use the ___________ a.Molar Mass b.Mass Ratio c.Mole…

A:

Q: An experiment was performed in lab to produce 10.3 grams of Ca(OH)2, however the calculations…

A:

Q: 4.0 g of oxygen contains   A. 0.025 molar masses   B. 4.0 molar masses of oxygen   C. .02 x…

A: Here there is Oxygen atom so atomic mass is 16 g mol-1.

Q: What is the total number of atoms contained in 3.00 moles of cobalt?

A: Given :- number of moles of Co = 3.00 mol  To calculate :- number of atoms of Co

Q: How many moles are in 7.8 g of NaF?   A. 0.133 mol   B. 0.19 mol   C. 327.6 mol    D. 7.8 mol

A:

Q: How many moles of sulfate ions (SO,2) are present in 0.30 mol of aluminum sulfate? A. 0.10 mol B.…

A: Al2(SO4)3 is a salt and readily dissociates in water forming following ions as shown below in the…

Q: 27) How many moles of ions are there in 20 g of magnesium phosphate, Mg3(PO4)2? a. 5.0 moles b.…

A:

Q: How many grams of Mo2(SO3)3 are in 1.34x1023 molecules of Mo2(SO3)3?    a. 4.17x104 grams b. 432.13…

A:

Q: How many moles of tungsten atoms are in 4.8 x 10^24 atoms in tungsten. a. 8.0x10^0 moles b.…

A: Given: No. of tungsten atoms =  4.8 x 1024 atomsRequired: no. of Moles of tungsten= ?

Q: 1. Acetone is a well-known industrial solvent with a molecular formula of: C3H60. Calculate for its…

A: Given, the molecular formula of acetone = C3H6O We have to find the formula weight of acetone and…

Q: 10. What does Avogadro's number represent? a. the number of atoms in 1 mol of an element b. the…

A:

Q: What is the molar mass of (NH4)2SO4 ?   A. 132.13g/mole   B. 104.09g/mole   C. 118.34g/mole…

A: We have to calculate the molar mass of Ammonium sulfate.

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.