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777dan777 [17]
3 years ago
5

carbon has three main adjectives 12C 13c and 14c by comparing the atomic structure of the isotopes explain what is meant by the

term isotopes ​
Chemistry
1 answer:
balu736 [363]3 years ago
7 0

Answer: isotopes are two or more atoms of the same element having the same atomic number(proton number) but different mass number due to the difference in their Neutron number

Explanation:

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Air in a closed cylinder is heated from 15°C to 36°C. If the initial pressure is 1000 torr, determine what is the final pressure
Bingel [31]

Answer:

1072 torr

Explanation:

To answer this problem we can use <em>Gay-Lussac's law</em>, which states:

  • P₁T₂=P₂T₁

Now we convert the given temperatures into K:

  • T₁ = 15°C ⇒ 15+273.16 = 288.16 K
  • T₂ = 36°C ⇒ 36+273.16 = 309.16 K

We <u>input the data</u>:

  • 1000 torr * 309.16 K = P₂ * 288.16 K

And <u>solve for P₂</u>:

  • P₂ = 1072 torr
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3 years ago
How much heat (in kJ) would need to be removed to cool 150.3 g of water from 25.60°C to -10.70°C?
olga_2 [115]

Answer:

Q = -22.9 kJ

Explanation:

Given that,

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The formula for heat needed is given by :

Q=mc\Delta T\\\\Q=150.3\times 4.2 \times (-10.7-25.6)\\\\Q=-22914.738\\\\or\\\\Q=22.9\ kJ

So, 22.9 kJ of heat is needed to be removed to cool.

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