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2 years ago

Give two reasons why a luminous flame is not used for heating purposes. (2mks) a

Chemistry

1 answer:

Natali [406]2 years ago

8 0

Answer:

The Two reasons are :-

1. Combustion efficiency

2. Standardization of test conditions as non-luminous flame.

Explanation:

A luminous flame isn't suitable for heating as it gives out soot (A black powdery or flaky substance consisting largely of amorphous carbon, produced by the incomplete burning of organic matter)

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On average, Earth’s crust contains about 8.1% aluminum by mass. If a standard 12-ounce soft drink can contains approximately 15

MrMuchimi

Answer:

5400 cans

Explanation:

First we convert the total weight, 1 ton, to grams:

$1ton=1x10^{6}g$

Now we need to know the mass of aluminum:

$m_{Al}=\frac{10^{6}*8.1}{100} =81000g$

Now we make the relation between the mass of aluminum in 1 ton of the earth's crust and the mass of aluminum per can:

$n=\frac{81000g}{15g/can} =5400cans$

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3 years ago

How do we determine the number of electrons in a neutral atom?

Elodia [21]

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2 years ago

What is the mass of 2.80 grams of H2O

IrinaK [193]

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2 years ago

what kind of evidence indicates a chemical change ?... a physical change? you may use examples to show softened.

SOVA2 [1]

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3 years ago

How many grams are in 6.53 moles of Pb

dezoksy [38]

Mr: 207.2
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2 years ago

Give two reasons why a luminous flame is not used for heating purposes. (2mks) a​

Give two reasons why a luminous flame is not used for heating purposes. (2mks) a