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Sergeeva-Olga [200]
3 years ago
15

Here anwser questions 2 ,4,6 those charts okay I also put how the formula on top solve these problems ! Please help me I geniunu

ly don’t understand this concept if you do I will mark you brainliest I don’t understand :( ! please don’t scam me I’m helpless

Chemistry
1 answer:
disa [49]3 years ago
4 0

Answer:

39.5L

Explanation:

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Which statement about electric and magnetic fields is true.
aksik [14]
The correct answer is 2. Magnetic fields must start at the north pole of a magnet and end at the south pole of a magnet. I took the test. Hope I helped!
5 0
3 years ago
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What causes hot air to rise, and cool air to sink?
nataly862011 [7]

Answer:

hot air rises because gases expand as they heat up.When air heats up and expands,its density also increases.The warmer,less dense air effectively floats on top of the colder, dense air below it. This creates a buoyant force that causes warmer air to rise.

cold air sinks because it is heavier as its more dense ( because of closely packed molecules) soits harder for them to move and they absorb less energy. Also, gravity pulls on it more strongly.

Hope it helps :)

8 0
3 years ago
In Part A, we saw that the theoretical yield of aluminum oxide is 0.700 mol . Calculate the percent yield if the actual yield of
s2008m [1.1K]

Considering the definition of percent yield, the percent yield is 76%.

<h3>Percent yield</h3>

The percent yield is the ratio of the actual return to the theoretical return expressed as a percentage.

The percent yield is calculated as the experimental yield divided by the theoretical yield multiplied by 100%:

percent yield=\frac{actual yield}{theorical yield}x100

where the theoretical yield is the amount of product acquired through the complete conversion of all reagents in the final product, that is, it is the maximum amount of product that could be formed from the given amounts of reagents.

<h3>Percent yield in this case</h3>

In this case, you know:

  • actual yield= 0.532 moles
  • theorical yield= 0.700 moles

Replacing in the definition of percent yield:

percent yield=\frac{0.532 moles}{0.700 moles}x100

Solving:

<u><em>percent yield= 76%</em></u>

Finally, the percent yield is 76%.

Learn more about percent yield:

brainly.com/question/14408642

#SPJ1

3 0
2 years ago
Give answer with correct number of significant figure 600*180
zubka84 [21]

Answer:

The answer to this question is; <em>1.08 x 10^5</em>

Explanation:

This is the correct option because

600 x 180 = 108,000

108,000. -> move the decimal over 5 times to get a number between 1 and 10

1.08 x 10^5

7 0
3 years ago
The reaction of carboxylic acids with alcohol in the presence of an acid catalyst yields Select one: amides O esters O no reacti
kumpel [21]

Answer:

esters

Explanation:

The -OR group of the alcohol replaces the -OH of the carboxylic acid, forming an ester. See attachment for condensed mechanism.

4 0
3 years ago
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