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mr_godi [17]
3 years ago
7

fire transfers heat by ___, meaning some heat rises, and ___, meaning some heat goes out in every direction.

Chemistry
1 answer:
Kazeer [188]3 years ago
7 0
Fire transfers heat by CONVECTION, meaning some heat rises, and FALL, meaning some heat goes out in every directions.




Hope that helps!!!
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1. A gas having the following composition is burnt under a boiler with 50% excess air.
jeka94

The composition of the stack gas are :

CH_4= 0.8713

C_3H_8 = 0.0202

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<h3 /><h3>What is a mole fraction?</h3>

The ratio of the number of moles of one component of a solution or other mixture to the total number of moles representing all of the components.

Assuming 100 g of the stack gas. Calculate the mass of each species in this sample according to their percentages.

Mass of CH_4 : 70% of 100 g = 70 g

Mass of C_3H_8 : 15% of 100 g = 15 g

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Now calculate the number of moles of each species:

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Number of moles of C_3H_8: \frac{15 g}{144.1 g/mol} = 0.10 mole

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Hence, composition of the stack gas are:

CH_4 = 0.8713

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brainly.com/question/13135950

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