previous 6 of 10 I Converting between quantities To convert from a given quantit
ID: 540161 • Letter: P
Question
previous 6 of 10 I Converting between quantities To convert from a given quantity of one reactant or product to the quantity of another reactant or product: First, convert the given quantity to moles. Use molar masses to convert masses to moles, and use Avogadro's number (6.02 x 1023 particles per mole) to convert number of particles to moles, . Next, convert moles of the given reactant or product to moles of the desired reactant or product using the coefficients of the balanced chemical equation. For example, in the chemical equation 2H2 + O2 2H2O the coefficients tell us that 2 mol of H2 reacts with 1 mol of 02 to produce 2 mol of H20 Finally, convert moles of the desired reactant or product back to the desired units. Again, use molar masses to convert from moles to masses, and use Avogadro's number to convert from moles to number of particles Reaction of hydrogen and nitrogen to form ammonia Hydrogen gas, H2. reacts with nitrogen gas, N2, to form ammonia gas, NHs, according to the equation 3H2 (g) + N2 (g) 2NH3 (g) NOTE: Throughout this tutorial use molar masses expressed to five significant figures Part A How many moles of NH, can be produced from 15.0 mol of H2 and excess N2? Express your answer numerically in moles. * Hints ( MacBook AirExplanation / Answer
The reaction is:
3 H2 + N2 —> 2NH3
So,
moles of NH3 produced = (2/3)*moles of H2 reacted
= (2/3)*15.0 moles
= 10.0 moles
Answer: 10.0 moles
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