134,4 g oxygen are needed.

For this you need the atomic (molecular) mass of C2H6. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel. C2H6= 30.1 grams80.0 grams C2H6 / (30.1 grams) = 2.66 moles C2H6

You can make a simple balance. There are (12.36 * 3) moles of H You have 2*H to form H2. So take the total from ammonia and divide by two to find the moles of H2 required.

The nunber of moles of oxygen is 2,5.

The answer is 2,68 moles.

First realize that it takes 3 CL2 to produce one mole of CHCl3. So take 1.50 moles of CHCl3 * 3 moles of Cl2 / 1 mole of CHCL3= 4.5 mole of Cl2 The the atomic weight of Cl2 is 35.5*2=71g. 4.5 mole of Cl2*71g= 319.5g. of Cl2 needed.

why addition reaction take place in ethene and ethyne but not in ethane

Soccer balls don't have moles and I hope to god moles don't have soccer balls

Take 43.8g NaCl divided by the molar mass of NaCl which is 58.443g and then you get your moles of NaCl. 43.8/58.443=0.749 moles NaCl

this is not possible yet..scientists have discovered an enzyme that can convert ethane to methane..however, if u take indirect route ..then its possible..

the atomic mass of of sodium is 22.99g/mol so you take 17.5 grams of sodium and divide is by 22.99grams per mole to get moles 17.5/22.99 = # of moles

addition reaction take place in ethene and ethyne because they are unsaturated hydrocarbones and in ethane all its vallency are fully satisfied

To convert grams to moles you need mercury's atomic mass: 200.59 grams/mole. You can then take your measurement and divide it by the atomic mass to get moles.Grams Ã· Atomic mass = Moles50.15 grams Ã· 200.59 grams = 0.2500 moles Hg

There are 24.31 grams in 1 mol of Mg so you take 12.15 and divide that by 24.31 and you get 0.499794323 which Im pretty sure is how many moles are in 12.15g of Mg.

For this you need the atomic mass of Na. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel.2.1 moles Na Ã— (23.0 grams) = 48.3 grams Na

it would be in your best interest to take a trip to the zoo to see moles.

This conversion requires a specific element. To convert moles to gram, you need to take the number of moles and multiply it by the atomic mass. If you do not have the atomic mass, you cannot go from moles to gram or grams to moles.

CO2 + H2 <-> CO + H2O all one to one ( I assume that 99.1 is grams. Always units!!!! ) 99.1 grams H2O (1 mole H2O/18.016 grams)(1 mole H2/1 mole H2O) = 5.50 moles of hydrogen gas needed If that was 99.1 moles water vapor then it would take 99.1 moles hydrogen gas at a one to one ratio.

For this problem you don't need the atomic mass of the element. If you want to convert moles to atoms, you need to take the number of moles and multiply it by Avogadro's constant, 6.02 × 1023. Divide by one mole for units to cancel.9.00 moles C × (6.02 × 1023 atoms) = 5.42 × 1024 atoms C

For this you do not have to have an atomic mass. Take the number of moles and multiply it by Avogadro's constant, 6.02 Ãƒâ€” 1023. Divide by one mole for units to cancel.2.5 moles Ãƒâ€” (6.02 Ãƒâ€” 1023 atoms) = 1.51 Ãƒâ€” 1024atoms in 2.5 moles

For this you do not have to have an atomic mass. Take the number of moles and multiply it by Avogadro's constant, 6.02 Ã— 1023. Divide by one mole for units to cancel.2.5 moles Ã— (6.02 Ã— 1023 atoms) = 1.51 Ã— 1024atoms in 2.5 moles

For this you need the atomic (molecular) mass of C6H6. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel. C6H6=78.1 grams5.6 moles C6H6 Ãƒâ€” (78.1 grams) = 437.36 moles C6H6

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