2 years ago

Entir What is the striking back of the bunsen- burner?

1 answer:

6 0

Answer:

With too little air, the gas mixture will not burn completely and will form tiny carbon particles that are heated to glowing, making the flame luminous. With too much air, the flame may burn inside the burner tube; that is, it may strike back.

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Mention any two uses of oxygen gas.

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Answer:

steel, plastics

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3 years ago

J.j thomson a british physicist was the first to identify the

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<span>J.j thomson a british physicist was the first to identify the electron in 1987</span>

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3 years ago

Balancing Chemical Equation<br> C=H2=CH4

svlad2 [7]

Answer:

C + 2H2 ⇒ CH4

Explanation:

In order to balance a chemical equation you need to make sure that the number of atoms on both sides are equal

C + H2 = CH4

C = 1

H = 2

Products:

C = 1

H = 4

H2 = 2 × 2 = 4

C + 2H2 ⇒ CH4

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2 years ago

Prandtl number in heat transfer analogues to which dimension less number in mass transfer. a) Schmidt number b) Sherwood number

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Answer:

a) Schmidt number

Explanation:

Prandtl number in heat transfer is analogues to Schmidt number in mass transfer.

Prandtl number in heat transfer is the ration of momentum diffusivity to the heat diffusivity.

$P_r = \frac{\nu}{\alpha}$

Whereas, Schmidt number in mass transfer is the ratio of momentum diffusivity to the mass diffusivity.

$S_c= \frac{\nu}{\nu_{AB}}$

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3 years ago

Burning wood in a fireplace is an example of what kind of energy conversion?

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Answer:

A. because the wood is stored chemical energy and it is converting into heat energy

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3 years ago

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