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2 years ago

How might someone dispute the results of your investigation? How might you counter the argument?

1 answer:

5 0

Someone may think the results are wrong you can fight with them through words or the use of hands in which you can toss them

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Explain why a balloon filled with O2 at room temperature collapses when cooled in liquid nitrogen where as balloon filled with H

Yuri [45]

When cooled by liquid nitrogen, the balloon shrinks (not as much as the air-filled balloon) and it sinks down on the table. When heating up, the balloon slowly rises and flies up in the air again. Explanation 1: The volume of the balloon decreases by the low temperature, because the gas inside is cooled down.

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2 years ago

Neon is a gas made up of only one type of atom. Which term best describes neon

MAXImum [283]

Neon is an element because it is a pure atom

8 0

3 years ago

Read 2 more answers

Use enthalpies of formation to determine the ΔHreaction for the reaction

Daniel [21]

Answer:

The enthalpy is increased by the increased heat of the reaction.

Explanation:

In this reaction, as the transition from solid to liquid state, enthalpy increases, that is, the heat applied to change its state is greater and this increases, reaching a mayor disorder.

If the reaction increases its heat, and a liquid state passes, the enthalpy increases, therefore the disorder also and the entropy will also be increased.

5 0

2 years ago

What is the density of a sample of a substance with a volume of 120ml<br> and a mass of 90g?

tigry1 [53]

Answer:

<h3>The answer is 0.75 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 90 g

volume = 120 mL

We have

$density = \frac{90}{120} = \frac{9}{12} = \frac{3}{4} \\$

We have the final answer as

Hope this helps you

6 0

2 years ago

Draw the simplified curved arrow mechanism for the reaction of butan-2-one and CH3Li to give the major product.

Yuki888 [10]

Answer:

Follows are the solution to this question:

Explanation:

Please find the image file of the chemical reaction in the attachment:

In a water medium, the CH3- type CH 3Li is a heavy nucleophile that attacks the carbonyl carbon atom to form the alkoxide ion, which will then be protonated to form alcohol.

8 0

2 years ago