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3 years ago

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Suppose you are asked to find the area of a rectangle that is 2.1- cm wide by 5.6- cm long. Your calculator answer would be 11.7

6 cm2 . Now suppose you are asked to enter the answer to two significant figures.

1 answer:

photoshop1234 [79]3 years ago

3 0

Two significant figures means 2 digits after the decimal. 11.76 already has two digits so you don’t need to do anything. The answer is just 11.76cm2

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Answer:

The percent yield of a reaction is 48.05%.

Explanation:

$WO_3+3H_2\rightarrow W+3H_2O$

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$M=d\times V = 1.00 g/mL\times 5.76 mL=5.76 g$

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

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

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

The percent yield of a reaction is 48.05%.

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