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vodomira [7]
3 years ago
9

The Scott Test is used when which drug is suspected?

Chemistry
2 answers:
hoa [83]3 years ago
8 0

Answer:

Cocaine

Explanation:

The Scott test is a presumptive, qualitative colorimetric test for the presence of cocaine that is carried out in the laboratory or on the field. It consists of 3 steps;

  • Suspected substance is mixed with cobalt thiocyanate in an aqueous/glycerin solution.
  • Acidification of the resulting solution using HCl.
  • Extraction of substance's precipitate using chloroform

<em>Blue organic phase indicates the presence of cocaine in substance while colourless organic phase indicates the absence.</em>

marishachu [46]3 years ago
4 0
It is a presumptive test for cocaine.
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Answer:

310.53 g of Cu.

Explanation:

The balanced equation for the reaction is given below:

CuSO₄ + Zn —> ZnSO₄ + Cu

Next, we shall determine the mass of CuSO₄ that reacted and the mass Cu produced from the balanced equation. This can be obtained as follow:

Molar mass of CuSO₄ = 63.5 + 32 + (16×4)

= 63.5 + 32 + 64

= 159.5 g/mol

Mass of CuSO₄ from the balanced equation = 1 × 159.5 = 159.5 g

Molar mass of Cu = 63.5 g/mol

Mass of Cu from the balanced equation = 1 × 63.5 = 63.5 g

Summary:

From the balanced equation above,

159.5 g of CuSO₄ reacted to produce 63.5 g of Cu.

Finally, we shall determine the mass of Cu produced by the reaction of 780 g of CuSO₄. This can be obtained as follow:

From the balanced equation above,

159.5 g of CuSO₄ reacted to produce 63.5 g of Cu.

Therefore, 780 g of CuSO₄ will react to produce = (780 × 63.5)/159.5 = 310.53 g of Cu.

Thus, 310.53 g of Cu were obtained from the reaction.

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3 years ago
An element's atomic mass does not include the mass of its <br> Electrons <br> Protons <br> Neutrons
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Answer:

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