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nataly862011 [7]
2 years ago
11

The circumference of a circle is 31.4 centimeters. What is the circle's radius? Use 3.14 for ​.

Chemistry
1 answer:
Marizza181 [45]2 years ago
3 0
Radius = 0.5 centimeters
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William measures a test tube and finds that the mass of the test tube is 5g. He places the lone reactant in the test tube and fi
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86 percent is the percent yield for this experiment if he expected to produce 5g of product.

Explanation:

Given that:

mass of test tube = 5 grams

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mass of reactant = 12.5 -5

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when 7.5 grams of reactant is heated mass of test tube was found to be 9.3 grams.

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However, he expected the product to be 5 grams (theoretical yield)

Percent yield = \frac{actual yield}{theoretical yield} x 100

          putting the values in the formula:

percent yield = \frac{4.3}{5} x 100

                     = 86 %

86 percent is the percent yield.

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