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siniylev [52]
3 years ago
10

If the Moon rises at 7 P.M. on a particular day, then approximately what time will it rise six days later?

Chemistry
1 answer:
OLga [1]3 years ago
5 0

Answer:

below

Explanation:

28th 10;24 am

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What is the percent yield of a reaction in which 51.5 g of tungsten(VI) oxide (WO3) reacts with excess hydrogen gas to produce m
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Answer:

The percent yield of a reaction is 48.05%.

Explanation:

WO_3+3H_2\rightarrow W+3H_2O

Volume of water obtained from the reaction , V= 5.76 mL

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Density of water = d = 1.00 g/mL

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Theoretical yield of water : T

Moles of tungsten(VI) oxide = \frac{51.5 g}{232 g/mol}=0.2220 mol

According to recation 1 mole of tungsten(VI) oxide gives 3 moles of water, then 0.2220 moles of tungsten(VI) oxide will give:

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Mass of 0.6660 moles of water:

0.666 mol × 18 g/mol = 11.988 g

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To calculate the percentage yield of reaction , we use the equation:

\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100

=\frac{m}{T}\times 100=\frac{5.76 g}{11.988 g}\times 100=48.05\%

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