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attashe74 [19]
3 years ago
11

Help! please

Chemistry
1 answer:
borishaifa [10]3 years ago
3 0

Answer:

The correct answers are : A neutron has no charge; Neutrons travel around the nucleus of an atom.

Explanation:

The neutrons correspond to subatomic particles present in the nucleus of the atoms, together with the protons. Neutrons do not have an electric charge and have similar mass to protons. The difference in neutrons between atoms of the same element is called an isotope (they differ in mass numbers from one another, for example Hydrogen and Deuterium).

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A sealed balloon occupies a volume of 250 mL at an unknown temperature. When the temperature is altered to 30 C, the balloon's v
Allushta [10]

Answer:

Initial temperature, T1 = 15°C

Explanation:

Given the following data;

Initial volume, V1 = 250 mL to Liters = 250/1000 = 0.25 L

Final temperature, T2 = 30°C

Final volume, V2 = 0.5 L

To find the initial temperature T1, we would use Charles' law.

Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles is given by;

\frac {V}{T} = K

\frac{V1}{T1} = \frac{V2}{T2}

Making T1 the subject of formula, we have;

T_{1}= \frac{V_{1}}{V_{2}} * T_{2}

Substituting into the formula, we have;

T_{1}= \frac{0.25}{0.5} * 30

T_{1}= 0.5 * 30

<em>Initial temperature, T1 = 15°C</em>

6 0
3 years ago
The molecular weight of water, H2O, is 18.02 g over mol. How many moles of water are in 24.3 g of water? Express the answer usin
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1.35

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4 years ago
(2) The electron configuration of nitrogen is 1s22s²2p3​
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I am a beautiful person. The comments for the use of the most of the most of the most of the most of the most of the most of the most of the most of the most of the most popular games and a bit. It has to offer you an email address and password.

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Sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry sorry

I didn't know this question answer

i don't know this question answer

5 0
3 years ago
8.8 Why do esters with higher molecular mass not have strong fragrances?​
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Answer:

Basically, fragrances reach other person through sense of smell. So, the strength of the fragrances depends a lot on its evaporation, which is strongly related to the boiling point. Esters with higher molecular weight do not have a strong fragrance because it has a higher boiling point.

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3 years ago
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