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Luden [163]
3 years ago
12

The general term used by archaeologists for a pin that was used in holding a garment together is the roman word ________.

Chemistry
1 answer:
Triss [41]3 years ago
6 0
<span>The general term used by archaeologists for a pin that was used in holding a garment together is the roman word Fibula.
</span>The term Fibula refers to Roman brooches, but also denotes<span> brooches from the entire ancient </span> period.
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It is desired to produce 2.25 grams of dichloromethane (CH2Cl2) by the following reaction. If the percent yield of dichlorometha
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Answer:- 3.12 g carbon tetrachloride are needed.

Solution:- The balanced equation is:

CH_4+CCl_4\rightarrow 2CH_2Cl_2

From given actual yield and percent yield we will calculate the theoretical yield that would be further used to calculate the grams of carbon tetrachloride.

percent yield formula is:

percent yield = (\frac{actual}{theoretical})100

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theoretical=(\frac{2.25(100)}{65.5})

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From balanced equation, there is 2:1 mol ratio between dichloethane and carbon tetrachloride.

Molar mass of dichloroethane is 84.93 gram per mol and molar mass of carbon tetrachloride is 153.82 gram per mol.

3.44gCH_2Cl_2(\frac{1molCH_2Cl_2}{84.93gCH_2Cl_2})(\frac{1molCCl_4}{2molCH_2Cl_2})(\frac{153.82gCCl_4}{1molCCl_4})

= 3.12gCCl_4

So, 3.12 grams of carbon tetrachloride are needed to be reacted.

8 0
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