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3 years ago

HELPPPPP PLZZZ ASAPPPPPPPP

Chemistry

1 answer:

lorasvet [3.4K]3 years ago

8 0

The mean temperature change is calculated by dividing the sum of the temperature changes by the number of trials. This questions say exclude the anomalous result which I assume is test 2, which gave a temperature change of 7.3. I will exclude this test. The mean will therefore be (9.5+9.2+9.5)/3 = 9.4. The mean temperature change is 9.4 C.

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Why is creativity important in constructing scientific explanations?

poizon [28]

D. Sometimes it is necessary to put forth new theories to explain experimental results,

Explanation:

Creativity is important to science because sometimes, it is necessary to put forth new theories to explain experimental results.

Theories are explanation of scientific observations.

Most scientists are critical and creative thinkers.
They must be able to come up with a wide range of possible explanation to explain their findings.
The explanations must be scientific in nature and not fall out of the basic tenets of this way of thinking.
Therefore, scientists draw from their wealth of deductive reasoning to give explanations into an observed phenomenon.

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3 years ago

A balloon is filled with 3.8 l of helium gas at stp. approximately how many moles of helium are contained in the balloon?

love history [14]

Hope this helps you.

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2 years ago

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On a balance, you have beakers of AgNO3AgNO3 solution and NaClNaCl solution. When mixed, they will form AgCl(s)AgCl(s). What wil

statuscvo [17]

Explanation:

According to the law of conservation of mass, mass can neither be created nor it can be destroyed. But it can be simply transformed from one form to another.

Therefore, when $AgNO_{3}$ is added to NaCl then the compound formed will have same mass as that of reactants.

$AgNO_{3} + NaCl \rightarrow AgCl + NaNO_{3}$

Total mass of reactants is (169.87 + 58.44) g/mol = 228.31 g/mol

Total mass of products is (143.32 + 84.99) g/mol = 228.31 g/mol

Thus, we can conclude that mass of the new mixture will stay the same.

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3 years ago

Last question, I promise!!!!!! ... :>

VikaD [51]

Answer:

Which question?

Explanation:

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3 years ago

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Which quantity is equivalent to the product of the absolute index of refraction of water and the speed of light in water?

givi [52]

The quantity which is equivalent to the product of the absolute index of refraction of water and the speed of light in water system is the speed of light in vacuum.

<h3>What is the speed of light?</h3>

Speed of light is the rate of speed though the light travels. To find the speed of light in any medium, the following formula is used.

$v=\dfrac{c}{n}$

Here, (n) is the index of reaction and (c) is the speed of light in the vacuum. The speed of light in the vacuum is almost equal to the 3.0×10⁸ m/s.

Now the quantity which is equivalent to the product of the absolute index of refraction of water and the speed of light in water has to be find out.

The above formula can be written as,

$v=\dfrac{c}{n}\\vn=c\\c=vn$

Here, the product of index of refraction and speed of light is equal to the speed of light in vacuum. This will be true for water as well.

Thus, the quantity which is equivalent to the product of the absolute index of refraction of water and the speed of light in water system is the speed of light in vacuum.

Learn more about the speed of light here;

brainly.com/question/104425

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1 year ago