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Vikki [24]
3 years ago
14

The number of outer shell electrons determines the chemical properties of an element?

Physics
1 answer:
Ivan3 years ago
3 0
Yes, it is true to a certain that the number of outer shell electrons determines the chemical properties of an element, only because this determines how the element interacts with other elements.
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(a) An ideal gas initially at pressure p0 undergoes a free expansion until its volume is 3.80 times its initial volume. What the
trapecia [35]

Answer:

a)P/Po=0.263

b)γ=1.33 So gas is triatomic

c)\dfrac{KE_f}{KE_i}=1.56

Explanation:

a)

initial pressure = Po

Initial volume = Vo

Final volume = 3.8 Vo

Lets take final pressure is P

we know that for free expansion process

PV= Constant

Po x Vo = P x 3.8 Vo

P=0.263 Po

So

P/Po=0.263

b)

Now gas is compressed in adiabatic manner

Final pressure = 1.56 Po

                       =1.56 Po

We know that for adiabatic process

P_1V_1^{\gamma}=P_2V_2^{\gamma}

\dfrac{V_2}{V_1}=\left(\dfrac{P_1}{P_2}\right)^{\dfrac{1}{\gamma}}

0.263P_o(3.8V_o)^{\gamma}=1.56P_o\times V_o^{\gamma}

γ=1.33 So gas is triatomic

c)

We know that average kinetic energy given as

KE=\dfrac{3}{2}KT

\dfrac{KE_f}{KE_i}=\dfrac{T_f}{T_i}\

\dfrac{KE_f}{KE_i}=\dfrac{P_fV_f}{P_iV_i}

\dfrac{KE_f}{KE_i}=\dfrac{1.56P_oV_o}{P_oV_o}

\dfrac{KE_f}{KE_i}=1.56

3 0
3 years ago
The larger the mass of a star, the higher the internal pressures. Higher internal pressures causes higher temperatures and it is
hram777 [196]

The types of fusion that occurs in stars are:

  • proton-proton fusion - stars with temperatures less than 15 million Kelvin and masses of 0.08 solar mass or more.
  • carbon cycle fusion - occurs in stars with temperatures of 15 million Kelvin or more and masses of 4.0 solar mass or more
  • helium fusion - occurs in stars with temperatures of 100 million Kelvin or more and masses of 0.5 solar mass or more

<h3>What is a nuclear fusion reaction?</h3>

A nuclear fusion is reaction in which nucleus of small atoms combine together to produces atoms of larger nucleus.

The types of nuclear fusion that can occur in a star include;

  1. Proton-proton fusion - occur in stars with core temperatures less than 15 million Kelvin and masses of 0.08 solar mass or more.
  2. Carbon cycle fusion occurs in stars with core temperatures greater than 15 million Kelvin having masses of 4.0 solar mass or more.
  3. Helium fusion - occurs in stars with core temperatures greater than 100 million Kelvin and masses of 0.5 solar mass or more

In conclusion, the types of fusion that occur in stars are proton-proton fusion, carbon cycle fusion and helium fusion.

Learn more about nuclear fusion at: brainly.com/question/982293

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The total amount of energy in the universe is...
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Answer:

infinite?

Explanation:

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How tall is Mount Everest?
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29,032′

Explanation:

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