3 years ago

Sobre ações relacionadas ao aquecimento global, assinale somente as alternativas corretas:

Chemistry

1 answer:

Law Incorporation [45]3 years ago

6 0

Answer:

123456788012346778901234567890

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In a titration to find the concentration of 30ml of a H2SO4 solution, a student found that 40ml of 0.2M KOH solution was needed

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When the vapor pressure of a liquid is equal to the atmospheric pressure, the liquid

Dmitrij [34]

Answer:

The liquid will boil.

Explanation:

Boiling will occur when the vapor pressure is equal to the atmospheric pressure. This is called the boiling point. Without any external pressure the liquid molecules will be able to spread out and change from a liquid to a gas.

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3 years ago

I NEED HELP PLEASE!!!!!

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What is the percent error for the experiment if the actual density is

OLga [1]

Answer:

<h3>The answer is 40.96%</h3>

Explanation:

The percentage error of a certain measurement can be found by using the formula

$P(\%) = \frac{error}{actual \: \: number} \times 100\% \\$

From the question

actual density = 2.49g/mL

error = 2.49 - 1.47 = 1.02

We have

$p(\%) = \frac{1.02}{2.49} \times 100 \\ = 40.96385542...$

We have the final answer as

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Answer:

Question 1 is 21.0g

Explanation:

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