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2 years ago

Draw a schematic diagram of a circuit with an output device, a energy source and a controller.

Chemistry

1 answer:

mart [117]2 years ago

8 0

Answer:

ch∪pαpi munαn0?

Explanation:

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What is the molecular formula of a hydrocarbon with m+ = 78?

fiasKO [112]

A molecular formula represents the exact number of atoms present for each element in the compound.

For carbon atom: $\frac{78}{12}$ = $6\frac{6}{12}$ ( as molar mass of carbon is 12 g/mol)

Now, 6 carbon atoms are present and rest are hydrogen atoms i.e. 6

Thus, formula becomes $C_{6}H_{6}$ ( $C_{x}H_{y})$

Now, check for unsaturation:

Degree of unsaturation = $\frac{2x+2-y}{2}$

Substitute the value of x and y,

Degree of unsaturation = $\frac{2(6)+2-6}{2}$

= $\frac{12-4}{2}$

= $4$ implies one ring and three double bonds.

Thus, formula comes out to be $C_{6}H_{6}$ i.e. benzene ring.

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3 years ago

SCIENCE HELP! 10 POINTS

Zepler [3.9K]

We are not 8n your. lass we need mor detail??

6 0

3 years ago

A plastic cup is filled with 15.5 grams of water. The cup is sealed and placed in the freezer. The water freezes and turns to ic

HACTEHA [7]

It should be the same

7 0

2 years ago

Answer me short answer

Zepler [3.9K]

Explanation:

B. 1) Tritium is the isotope of Hydrogen (H).

2) Mass of an Electron is 9.10938356 × 10-³¹ Kg.

3) Molecular mass of Carbon dioxide (CO2)

=> Molecular mass of carbon = 12g

Molecular mass of oxygen= 16g

molecular mass of CO2 = [12 + (16 X 2)]g

= (12 + 32)g

= 44 g

4) Dalton has given its Atomic Theory in the year 1803.

5) Nucleus is discovered by

= Ernest Rutherford discovered the nucleus of the atom in 1911.

hope this helps you.

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2 years ago

Joseph Priestley discovered and described the chemical properties of oxygen. What type of chemist would he be considered today?

Verizon [17]

The answer would be b. inorganic because biochemists look at chemicals containing carbon.

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3 years ago