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Damm [24]
4 years ago
5

Science.... homework!

Chemistry
1 answer:
Leokris [45]4 years ago
5 0
The answer to this question is 2 and 3
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How does the atomic radius increase?
Helen [10]

Answer:

increases as you move down a group as the number of electrons increases. Therefore, the atomic radius increases as the group and energy levels increase

Explanation:

5 0
3 years ago
Calculate the volume of one mole of a gas at 1.00 atm pressure and 0 °C.
N76 [4]

Answer:

Solution:-

The gas is in the standard temperature and pressure condition i.e. at S.T.P

Therefore,

V

i

​

=22.4dm

3

V

f

​

=?

As given that the expansion is isothermal and reversible

∴ΔU=0

Now from first law of thermodynamics,

ΔU=q+w

∵ΔU=0

∴q=–w

Given that the heat is absorbed.

∴q=1000cal

⇒w=−q=−1000cal

Now,

Work done in a reversible isothermal expansion is given by-

w=−nRTln(

V

i

​

V

f

​

​

)

Given:-

T=0℃=273K

n=1 mol

∴1000=−nRTln(

V

i

​

V

f

​

​

)

⇒1000=−1×2.303×2×273×log(

22.4

V

f

​

​

)

Explanation:

6 0
3 years ago
In what way or ways would the physical universe be different if protons were negatively charged and electrons were positively ch
vagabundo [1.1K]

Answer:

Nothing will happen as long as the magnitude of charges remains same...

Explanation:

We know that protons are 1836 times more massive than electrons but they have same magnitude of charge overall. So, if we reverse the polarities the system would still be stable as long as the magnitudes of charges are stable and vice versa.

7 0
3 years ago
Students heat water in a beaker and measure its temperature. The starting temperature of the water was 23.3 °C. The diagram show
serious [3.7K]

Answer:

As heat is applied to liquid water, the molecules move faster and the temperature again increases. During the phase change from liquid to gas, the added heat is stored in the molecules as, once again, potential energy, and the temperature remains constant.

Explanation:

5 0
2 years ago
What is the speed of a wave on a guitar string with a mass of
jok3333 [9.3K]

Answer: 4.5

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6 0
3 years ago
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