how many molecules of N2  in 57L N2 gas

Q: How many molecules are in 0.430 moles of Neon gas?

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Q: THow many H2 molecules are there in 6 g of H2 gas (Atomic mass of H=1; Avogadro's No.-6.022 X10 X10…

A: We have given that given mass of H2(g) = 6g Molecular mass of H2(g) = 2.0g/mole No. of mole of H2(g)…

Q: A 0.182 mol sample of 0, gas is contained in a 7.00 L flask at room temperature and pressure. What…

A: Given, At room temperature and pressure Moles of sample of oxygen (O2) = 0.182 mol Volume of the…

Q: How many moles of fluorine are found in 3.50 liters of fluorine?

A: 1 mole = 6.022×1023 [Avogadro's number ] 1 mole of any gas under STP conditions occupy a volume of…

Q: How many molecules are in 40g of helium?

A: The given weight of He is 40 g.   The formula to calculate the number of moles is,

Q: How many grams of NaCl are present in 8.39x1022 formula units of NaCl? a) 0.139g b) 2.38 x 10-3g…

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Q: Calculate the number of nitrogen atoms in a 150.0g sample of hydrazine N2H4. Be sure your answer…

A: The question is based on mole concept. We have been given mass of hydrazine. we have to calculate…

Q: How many MOLECULES of water are present in 9.27 grams of this compound? A 3.10 x 1023 molecules H20…

A: Given that: Mass of water = 9.27 g Molar mass of H2O = 18g/mol Moles of water = 9.27g÷18g/mol =…

Q: What is the percent mass of water in CaSO4•2H2O? Show your calculations

A: Atomic mass of calcium = 40 u Atomic mass of sulfur = 32 u Atomic mass of oxygen = 16 u Atomic mass…

Q: Define 1. Molecular mass 2. Mole

A: Molecular mass:  Molecular mass is a number which indicates how many times one molecule of a…

Q: How many moles of H2 gas

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Q: Which of the gases in the graph below has the largest molar mass? Explain your answer.

A: This graph the variation of molecular speed with relative number of particles.

Q: How many cations are in 20.0g of Sodium pnosphate?

A: The formula of sodium phosphate is Na3PO4 Given: weight of sodium phosphate = 20 g

Q: How many moles of CF4 are there in 171g of CF4

A: No. Of moles = given mass / molar mass  Given mass is 171g  Molar mass is calculated in 2 step.

Q: How many millimoles of calcium nitrate contain 4.78 x 1022 formula units of calcium nitrate?

A: Avagadro number gives the number of atoms or molecules present in one mole of the substance. It has…

Q: How many oxygen (O) atoms are present in a 254 gram sample of carbon dioxide (CO2) gas?

A: Since moles of carbon dioxide = mass of carbon dioxide / molar mass of carbon dioxide molar mass of…

Q: How many moles are present in 67.6 grams block of ice?

A: The number of moles (n), mass (m) and molecular mass of a sample of a compound (M) are related as:

Q: Calculate the mass of 72.1 mmol SO2

A: It is given that:Number of moles(n) of SO2 = 72.1 mmol

Q: How many MOLECULES of water are present in 9.27 grams of this compound? (A) 2.80 x 1032 molecules…

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Q: 4.39 x 10^27 P4 O10 molecules = Atoms

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Q: how many formula units in 7.69 grams of MgO

A: The formula unit is used to define the empirical formula. So we are basically asked to find how many…

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

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Q: What is the mass of 3.94 moles of fluorine gas?

A: Given, Number of moles of fluorine gas =3.94 moleswe are asked to calulate the mass of 3.94 moles of…

Q: percent of carbon dioxide in the sample?

A:

Q: How many moles of C are in 25.9g of (C3H5)2S

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: How many grams of S are in 775g of SO2?

A: The mass of SO2 is = 775 g The mass of S in this amount of SO2 is =?

Q: how many water molecules can a teaspoon hold?

A: Volume of 1 teaspoon = 4.93 mL Volume of teaspoon = volume of water = 4.93 mL = 4.93×10-3 L

Q: How many moles of CH4 gas are in 3.8 x 1024 molecules? 100 mol 6.3 mol O 16 mol 61 mol

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Q: to

A: Mass of Material Can be calculated by multiplying with one atom weight with a number of atoms.

Q: Convert 7.8x10^22 atoms of ammonium chloride to grams of ammonium chloride(NH4)Cl. choose the…

A: We are given The number of molecules of (NH4)Cl, (N)= 7.8×1022 molecules. Let there be n moles of…

Q: How many formula units make up 35.8 gg of magnesium chloride (MgCl2MgCl2

A: The formula of magnesium chloride is MgCl2  hence the molar mass of MgCl2 is  = (24.30 + 2 × 35.45)…

Q: 10 gram sample of which substance contains the greatest amount of hydrogen atoms A. 10gCH4…

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Q: 02: Fínd the number of mmol of NaBr (FW = 102.89 g/mol) present in 1.2664 g of NaBr.

A: Given values,  Mass of NaBr= 1.2664 g Formula weight = molar mass= 102.89 g/mol And we have formula…

Q: How many grams of H are in 3.54g of (C3H5)2S

A: The grams of H that are in 3.54g of (C3H5)2S are to be calculated.

Q: 36.) How many molecules of N2O are there in 60.0g of N2O?

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Q: 5. How many molecules are in 142.69 L of CH4? A V-M. a. 8.59 x1025 molecules b. 6.37 molecules C.…

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

Q: Calculate the mass in grams for each of the following gases at STP. 4.78×1022 molecules of…

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Q: How many grams are in 8.75 x 1025 molecules of l2

A: The molar mass of I2 is 253.81 g/mol that mean this mass of I2 contain 6.022×1023 of I2 per mol.

Q: Calculate the number of (a) nitrogen molecules (N 2 molecules) and (b) nitrogen atoms (N atoms) in…

A: Use formulas Mole=mass÷molar mass Total molecule=mole×6×1022 Total Atoms=atomicity×molecule…

Q: For items 1 and 2: 4NH3 + 302 6H2O + 2N2 1. What is the mole ratio of NH3 to H2O? 2. What is the…

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Q: How many molecules of water make up 5.7 moles?

A: A mole is the amount of a substance that contains 6.02*10^23 representative particle of that…

Q: A gas sample contains 16.0 g of CH4, 16.0 g of O2, 16.0 g of SO2, and 33.0 g of CO2. What is the…

A: Stoichiometry is mainly based on the calculation of moles and volumes. These two values are used to…

Q: moles of C2H6in 3.75 x 10^23 moles of C2H6

A: In chemistry, the amount of the substance that resides in a system is provided by the SI base unit…

Q: N2 + 3H2  ⟶ 2NH3 Calculate number of ammonia molecules produced  from 35.5 grams of hydrogen gas…

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Q: How many grams do 3.47 x 1023  formula units of Sr(ClO4)2

A: Mass of a substance can be related to number of particles using the mole concepts involving…

Q: what is the mass of 40.34x1023 H2 molecules ar STP?

A: Given :- number of molecules of H2 = 40.34 × 1023  To calculate :- mass

Q: How many moles of argon gas contain 7.52 x 1022 Ar atoms? 0.801 mol 1.25 mol 0.0801 mol 0.125 mol…

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Q: How many moles are in 28.4 grams of water?

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Q: How many molecules are present in 45g of fluorine gas, F₂? 2.71 x 1025 1.03 x 1027 7.13 x 1023 1.97…

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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.