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Digiron [165]
3 years ago
10

Which of the following best describes what led to London’s “killer fog” in 1952? a. Pollution from the air contaminated the wate

r supply which is what killed people. b. Millions of coal fires and stagnant air caused toxic fumes to build up in the air. c. Poor city design led to faulty ventilation in houses. d. Soot from forest and wildfires in the surrounding areas blew over the city.
Chemistry
2 answers:
abruzzese [7]3 years ago
8 0
<span>b. Millions of coal fires and stagnant air caused toxic fumes to build up in the air. The main cause of the coal fires, which burned at plants across England, was a weather pattern that produced cooler weather and air that did not circulate. Citizens used more heat and so more coal was burned. The post-war coal was not great quality and thereby included many toxins. The weather pattern created fog, which after it dispersed, left toxins and acid droplets to fall on the people.</span>
lesantik [10]3 years ago
6 0

just took the test. the answer is c. poor city design led to faulty ventilation in houses.

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How do multiple forces interact
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<span>So what happens when there is more than one force? I like to think of net force as if two people were pulling on ropes attached to a big crate. If they pull the crate in the same direction, the crate will accelerate twice as quickly. If they pull in opposite directions with equal forces, the crate won’t move at all — these two forces cancel each other out. If one person pulls northwards and the other pulls eastwards, the crate will move to the north-east.




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4 0
3 years ago
The person writes a coefficient of 2 in front of Fe2O3 but then writes a 4 for the number of iron (Fe) atoms. Explain this diffe
den301095 [7]

Answer:

See explanation

Explanation:

Given that the formula of the compound is Fe2O3, if a coefficient of 2 is placed in front of the formula, that is, if we write 2Fe2O3 . Then;

The number of Fe atoms becomes 2 *2 = 4

The number of oxygen atoms becomes 2*3 = 6

That is why the total number of iron atoms were written down as 4.

6 0
3 years ago
Read 2 more answers
Which way of dissolving changes the chemical identity of the solute?
sasho [114]

Answer:

Ionization and dissociation

5 0
3 years ago
Read 2 more answers
Which of the following molecules would have the lowest boiling point?
scZoUnD [109]
The CH4 molecule has the lowest molecular weight, so it has the lowest boiling point.

Hope I helped :)
4 0
4 years ago
Describe endothermic vs. exothermic reactions in terms of product formation. (hint: what happens when products are formed?)
shusha [124]

Answer:

Endothermic reaction chemical equation

Reactnt A + Reactant B + Heat (energy) ⇒ Products

Exothermic reaction chemical equation

Reactnt A + Reactant B ⇒ Products + Heat (energy)

Explanation:

Endothermic Reaction

An endothermic reaction is a reaction that reaction that requires heat before it would take place resulting in the absorption of heat from the surrounding that can be sensed by the coolness of the reacting system

An example of an endothermic reaction is a chemical cold pack that becomes cold when the chemical and water inside it reacts

Exothermic Reaction

An exothermic reaction is one that rekeases energy to the surroundings when it takes place. This is as a result of the fact that the combined heat energy of the reactants is more than the chemical heat energy of the products. An example of an exothermic reaction is a burning candle

5 0
3 years ago
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