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julia-pushkina [17]
3 years ago
9

a problem or issue in a human or natural environment caused by chemical reactions. Plz give me the URL as well.

Chemistry
1 answer:
MArishka [77]3 years ago
5 0
The problem or issue in a human or natural environment caused by chemical reactions would be smog. It is a kind of air pollution, originally named for the mixture of smoke and fog in the air.  <span>The atmospheric pollutants or gases that form </span>smog <span>are released in the air when fuels are burnt. When sunlight and its heat react with these gases and fine particles in the atmosphere, it is formed.</span>
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Both a siren passing by and radar exhibit the Doppler effect. What is the main
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Answer:

D. Radar uses radio, and the siren uses sound waves.

Explanation:

The main difference between the siren passing by and the radar is that radar uses radio waves and siren uses sound waves.

  • Sound waves are mechanical waves which requires a material medium for their propagation.
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Marta_Voda [28]
<span>Suppose you plant a seed and observe that a tree of large mass grows from it. The tree achieves a final mass that changes very little for years afterward.<span>

</span>Answer: Of the options presented above the one that is true about the tree is answer choice B) Both anabolic and catabolic reactions took place in the seed and tree when it was young and growing, and both continue now even though the tree reached a stable mass.

I hope it helps, Regards.</span>
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Which term best describes the process by which particles escape from the surface of a nonboiling liquid and enter the gas state?
weeeeeb [17]
Evaporating? But that’s with a boiling liquid
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Aluminum metal reacts with dilute sulfuric acid to produce aluminum sulfate and hydrogen gas. what mass of aluminum will react w
SOVA2 [1]
Aluminium reacts with dilute sulfuric acid based on the following reaction:
<span>2Al + 3H2SO4 ..............> Al2 (SO4)3 + 3H2

From the periodic table:
mass of aluminium = 27 grams
mass of hydrogen = 1 gram
mass of oxygen = 16 grams
mass of sulfur = 32 grams

Therefore:
molar mass of aluminium = 27 grams
molar mass of sulfuric acid = 2(1) + 32 + 4(16) = 98 grams

From the balanced chemical equation:
2 moles of aluminium react with 3 moles of dilute sulfuric acid.
This means that 34 grams of Al react with 294 grams of the acid

To get the amount  of aluminium that reacts with </span><span>5.890 g of sulfuric acid, we will do cross multiplication as follows:
</span>amount of Al = (<span>5.890 x 34) / 294 = 0.6811 grams</span>
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Battery represents a simple machine
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