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2 years ago

Five sources of air pollution

Chemistry

2 answers:

nevsk [136]2 years ago

7 0

Answer:

sorry i couldn't think of a fifth one

Explanation:

There are four main types of air pollution sources: mobile sources – such as cars, buses, planes, trucks, and trains. stationary sources – such as power plants, oil refineries, industrial facilities, and factories. area sources – such as agricultural areas, cities, and wood burning fireplaces.

Hoochie [10]2 years ago

5 0

Answer:

<h2><u><em>The Explanation show's u the five sources of air pollution .</em></u></h2>

Explanation:

<h2><u><em>– such as cars, buses, planes, trucks, and trains. stationary sources – such as power plants, oil refineries, industrial facilities, and factories. area sources – such as agricultural areas, cities, and wood burning fireplaces. natural sources – such as wind-blown dust, wildfires, and volcanoes.</em></u></h2>

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Emily spills concentrated sodium hydroxide solution on her lab bench. What she should do first?

blagie [28]

<h2>Answer:</h2>

She should notify her teacher.

<h2>Explanation:</h2>

Sodium Hydroxide is very corrosive in nature and it causes Redness, Pain, Serious skin burns and Blisters. Sodium hydroxide does not produce systemic toxicity, but is very CORROSIVE and can cause severe burns in all tissues that it comes in contact with. Therefore she should not touch it and she must notify her teacher as soon as possible.

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2 years ago

Which of the following elements has the largest ionization

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2 years ago

Where did the molecules of carbon dioxide come from while the tortilla chip was burning

CaHeK987 [17]

The answer can be explained when you burn something cleanly (with a very hot item) or not. With a candle lots of Carbon dioxide is producted but when using a bunson burner hardly any CO2 is produced.

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2 years ago

Q4. The student started with 16.0 grams of NaCl, show the calculation for the percent error that

Vedmedyk [2.9K]

Answer:

72.6% Error

Explanation:

% error = $\frac{Real-Measured}{Real} * 100$

$\frac{58.44-16}{58.44} *100= 72.6$

58.44 is the weight of NaCl

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2 years ago

Convert 7.50 mol of Li₂O to grams

Natali5045456 [20]

Answer:

223.5 g

Explanation:

The formula between the number of moles, mass and Mr can be used to convert moles to grams.

<em>Number of moles = mass ÷ Mr</em>

So, mass = number of moles × Mr

Mr of Li₂O = (6.9 × 2) + 16 = 29.8

∴ Mass = 7.5 × 29.8 = <u>223.5 g</u>

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1 year ago