how many moles are in 78 L of helium?

Q: A balloon with 10g of Xenon has a volume of 4L, what will the volume be when 6g more of Xenon is…

A: Given :-  Initial amount of Xe = 10 g  Initial volume = 4L  To calculate :-  Final volume after…

Q: Give me the volume of one mug of milk

A: Volume of a substance is the space occupied by a substance.

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: O CHEMICAL REACTIONS Uusing molarity to find solute moles and solution volume A chemist adds 1.50 L…

A: Given: 1.50 L of 2.0 M sodium nitrate solution

Q: how may moles is in 26.8g of water?

A: Molar mass of water = 18.01528 g/mol Given mass of water = 26.8 g No. of mol is given by: No. of…

Q: 41.2 ml sample of H2 at STP would contain how many grams of hydrogen?

A: one mole of any species contains quantity of its molar mass.

Q: 13. When 28.0g of carbon monoxide is analyzed, it if found to contain 12.0g of carbon and 16.0g of…

A: In 28g of CO, that is 1 mole of CO contains one mole of C and one mole of O; in 375.0g of CO, 13.4…

Q: Calculate the mass percent of 2.50 moles of naoh in 0.900l of water at 25degress Celsius (the…

A: Given: The number of moles of NaOH is 2.50 mol. The volume and the density of water are 0.900 L and…

Q: How many liters are in 2.85 mol of Kr?

A: 1 mole of the ideal gas at standard temperature and pressure occupies 22.4-litre volume.

Q: If the gas mixture in Question #13 above has a temperature of 37°C and a volume of 52.0 L: a. What…

A:

Q: From the previous question convert 2.25 mole of Ne to Liters of Ne O 50.4 L of Ne O 100 L of Ne O 1…

A: At STP 1 mole of any gas have a volume of 22.4 L.This is known as molar volume So,molar volume =…

Q: Adding helium to a balloon increased its volume from 309.1 mL to 1.695 L. If the final number of…

A: Given data,  Initial volume of helium gas in the balloon ( V1) = 309.1 mL = (309.1/1000) L = 0.3091…

Q: How many grams of NaCl in 2 L of ½ NSS?

A:

Q: How many moles are present in 49.2g of sulfur?  Report your answer to 2 decimal places

A:

Q: A balloon with a volume of 3.4 L contains 82 grams of oxygen gas. What is the new volume of the…

A: In accordance with the Avogadro's law, the volume of a gas varies directly with the amount of gas in…

Q: How many moles are in 135.2g of H2O? Round to 2 decimal places.

A: Mole represent the quantity of a substance.It is used for fundamental particle like as proton…

Q: A balloon fi lled with helium gas, He(g), develops a leak. If it originally contained 0.20 mol of…

A: Given: V1=3.5Ln1=0.20 moleV2=2.5Ln2=?

Q: 2 moles HI

A: In the given reaction ether reacts with two moles of hydrogen iodide. The product of the reaction is…

Q: Calculate the volume in liters of a 3.80 x 10 mol/L silver(II) oxide solution that contains 800, mg…

A: Molarity is defined as the ratio of the number of moles of solute to the volume of solution in…

Q: A 4.42 mol4.42 mol sample of KrKr has a volume of 631 mL.631 mL. How many moles of KrKr are in a…

A: Molarity = Number of moles/Volume (L)

Q: Calculate the volume in liters of a 0.829 mol/L sodium carbonate solution that contains 150. g of…

A: Molarity= mol/volume in L

Q: ams of argon and 4.14 grams of carbon dioxide. Wha

A: A) moles of Ar = ( mass / molar atomic mass ) = ( 4.56g / 39.95 gmol-1 ) = 0.114mol  B) moles of CO2…

Q: Label the diagram to correctly convert 2.25 moles of Ne to Liters of Ne at STP : 1 Mole of Ne : 2.25…

A: Given, moles of Ne = 2.25 moles At STP, Standard Temperature & Pressure volume occupied by Ne =…

Q: how many molecules of N2  in 57L N2 gas

A: Assuming the pressure of the atmosphere is = 1atm  and temperature = 300K  Now using PV = nRT…

Q: How many moles are in 855 grams of oxygen

A: Use the following formula: Moles =Weight of the substanceMolecular weight of the substance Weight of…

Q: If you have7.93 x 1022 molecules of Ne2 gas. How many g do you have ?

A: The number of molecules of Ne2 gas is 7.93×1022. The formula to calculate number of molecules is,

Q: How many moles of water are in 1 μL of water?

A: The density of a substance can be defined as mass of substance per unit volume of substance. The…

Q: Assuming the gas is at standard temperature and pressure, how many milliliters make up .073 moles of…

A:

Q: 9. If 30 liters of H2were used, how many liters of N2would need to be used? 1 N2 > 3 H2 2 NH3

A: Given reaction - 3H2 + 1N2 → 2NH3 Given data - Volume of H2 used = 30 L

Q: Calculate the volume in milliliters of a 0.731 mol/L sodium nitrate solution that contains 150. mmol…

A: Volume of NaNO3 solution = To be determined Molarity of NaNO3 solution = 0.731 mol/LMoles of NaNO3 =…

Q: A chemist prepares a solution of zinc oxalate (ZnC,0,) by measuring out 0.0034 µmol of zinc oxalate…

A:

Q: If one mole of gas has a volume of 22.7 L , how many moles are there in 5.30 L of gas?

A: Ans According to the ideal gas equation PV =nRT if T, R and P are constant then V1/n1= V2/n2 Hence…

Q: Chloroethane, C2H5ClC2H5Cl, is used to diagnose dead tooth nerves. How many moles are in 38.0 gg of…

A:

Q: How many moles of HBr are present in 0.123 L of a 2.67 M solution? Your Answer: Answer units

A: Given that: Volume of solution (V) =0.123 L Molarity of solution (M) = 2.67 M Moles of HBr =?

Q: How many liters are in 3.4 of xenon

A: Given that : Number of moles of xenon = 3.4 moles We have to calculate the volume of xenon.

Q: How many moles are in 2.5 grams of water

A: Given,                mass of water (H2O) = 2.5 grams.          Molar mass of H2O = 18.02 g/mol.

Q: What volume of N2 (g) is required to produce 200 L of NH3 (g)

A: Interpretation-  To determine the volume required for N2(g) to produce 200 L of NH3(g) -…

Q: How many moles of oxygen will occupy a volume of 7.5L at 1.2atm and 35.0◦C?

A:

Q: How many molecules of ethane(C2H6) are present in 0.433g of C2H6? 3 significant figures

A: One mole of any compound contains approximatly 6.022 x 1023 atoms or molecules called as Avogadro's…

Q: Earth's atmosphere is approximately 78.0% nitrogen and 21.0% oxygen. What is the mass in grams of…

A: Earth's atmosphere consists of 78.0% nitrogen and 21.0% oxygen apart from 0.9% argon and 0.1% other…

Q: How many mL are in a 0.430 L sample?

A: Conversion of litre (L) to millilitre (mL) can be done as follows:

Q: What is the volume (in mL) of 0.684 mol of carbon disulfide (MM = 76.13 g/mol) at 20 degrees…

A: We have to calculate the volume of Carbon disulphide.

Q: Calculate the volume in milliliters of a 0.95 mol/L silver nitrate solution that contains 25.0 g of…

A:

Q: Earth's atmosphere is approximately 78.0% nitrogen and 21.0% oxygen. What is the mass in grams of…

A: Pressure of air (P) = 1 atm Volume of air (V) = 1000 L Temperature of air (T) = 298 K Universal gas…

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

A:

Q: Calculate the volume in liters of a 0.044 mol/L aluminum chloride solution that contains 150. g of…

A: Given: Molarity of the solution =0.044 mol/L Mass of aluminium chloride=150 g The volume of…

Q: It's 32°F (0°C) outside under normal atmospheric conditions (1 atm) at a stunt performer's birthday…

A:

Q: Calculate the volume in liters of a 0.0043 mol/L calcium sulfate solution that contains 25.0 g of…

A:

Q: How many grams of CO2 are in 345.1 L of CO2 gas?

A: Applying formula Mw = (wg /V)× 22.4

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.