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soldier1979 [14.2K]
3 years ago
15

Write down the procedure for the test of presence of nitrogen in organic compound

Chemistry
2 answers:
timofeeve [1]3 years ago
8 0
The Lassaigne's test helps to detect Nitrogen, Sulphur, and Halogens in the organic compounds. Here, sodium metal (Na) is heated in the presence of the organic compound inside a fusion tube.

The presence of nitrogen in the organic compound is detected by fusing organic compounds with sodium metal to give sodium cyanide (NaCN) soluble in water. This is converted into sodium ferrocyanide by the addition of sufficient quantities of ferrous sulphate.
Nikitich [7]3 years ago
6 0

Answer:

The presence of nitrogen in the organic compound is detected by fusing organic compounds with sodium metal to give sodium cyanide (NaCN) soluble in water. This is converted into sodium ferrocyanide by the addition of sufficient quantities of ferrous sulphate.

Explanation:

It is what I found online.

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Select all of the statements that correctly describe DNA structure:
GalinKa [24]

Answer:

  1. Hydrogen bonds will hold two DNA strands together.
  2. The sugars and phosphate groups are located on the exterior of the helix.
  3. Base pairing will always be between a purine base and a pyrimidine base.

<em>I hope this helps you</em>

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2 years ago
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A piece of wood has a mass of 36g and measures 3cm X 6cm X 4cm. What is the density of the wood? Would the piece of wood float o
Fudgin [204]

Answer:

Explanation:

The density is  

1.1 g c m 3 .

4 0
3 years ago
Which of the following will increase the volume of a gas?
Dmitry_Shevchenko [17]

Answer:

B. Decreasing the pressure applied to the gas molecules

Explanation:

According to Boyle's Law, the pressure of the gas is inversely proportional to the volume of the gas. So, the option B is correctly implied to it.

Other values such as Temperature, Number of molecules are inversely proportional to the volume of the gas.

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7 0
3 years ago
Which is a common way for a scientific calculator to show the number below? <br> 8.1 102
Elodia [21]
Answer: 8.1e+2 or 8.1E+2 (in the scientific notation mode), based on that the number given is 8.1 × 10².

Explanation


Scientific calculators use the letter e or E to show the numbers in scientific notation mode.

These are some examples of numbers that require scientific notation and how they are shown.

Number                 Scientific calculator display

6.022 × 10²³           6.022 e+23
5 × 10 -12              5 E -12

So, understanding that your question is about number 8.1 × 10², the scientific calculator could show  8e+2.

Nevertheless, since 8 .1 × 10² is 810, not a long number, if the display is not in scientific notation mode, it could just display just 810,

7 0
4 years ago
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