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zavuch27 [327]
3 years ago
8

How are repetition and replication alike and different

Chemistry
1 answer:
Lisa [10]3 years ago
8 0
<span>Just look it up on answers.com
</span>
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The three primary sources of air pollution are _____.
Kisachek [45]

There are four main types of air pollution sources:

<span>mobile sources – such as cars, buses, planes, trucks, and trainsstationary sources – such as power plants, oil refineries, industrial facilities, and factoriesarea sources – such as agricultural areas, cities, and wood burning fireplaces<span>natural sources – such as wind-blown dust, wildfires, and volcanoes........hope i helped</span></span>
7 0
3 years ago
Read 2 more answers
How many grams of CO2 evolved from a 1.205g sample that is 36% MgCO3 and 44% K2CO3 by mass?
emmasim [6.3K]

Mass of CO₂ evolved : 0.108 g

<h3>Further explanation</h3>

Given

1.205g sample, 36% MgCO3 and 44% K2CO3

Required

mass of CO2

Solution

  • mass of MgCO₃ :

0.36 x 1.205 g=0.4338 g

mass C in MgCO₃(MW MgCO₃=84 g/mol,  Ar C = 12/gmol)

= (12/84) x 0.4338

= 0.062 g

  • mass of K₂CO₃ :

0.44 x 1.205 g = 0.5302 g

Mass C in K₂CO₃(MW=138 g/mol) :

= (12/138) x 0.5302

= 0.046 g

Total mass Of CO₂ :

= 0.062 + 0.046

= 0.108 g

7 0
3 years ago
Question 2 of 5
Nataly_w [17]

Answer:

C

Explanation:

The answer is C because machines such as tractors and sprinklers are counted as technology, and are better examples than pesticides.

5 0
3 years ago
How many millibars are equal to 27:23 inches of mercury. How did you get you answer
Nady [450]

the correct answer is.. ill tell you when i search it up gimme 2 seconds


4 0
3 years ago
Which method can be used to separate the components of a solution? Check all that apply.
cricket20 [7]
Filtration: To remove solid substance from liquid. 
Evaporation: To remove dissolved substance from liquid.
Distillation: To separate 2 liquids with different boiling points.
6 0
3 years ago
Read 2 more answers
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