The atom that is made up of two protons is He. The number of neutrons is also two. The number of electrons matters in the charge. So to make 10 electrons, we add 8 more. hence, 4/2 He 8-.
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Answer:</h3>
The rate of sea level change is the fastest
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Explanation:</h3>
To determine the process which is the fastest we need to determine the rate at which each occurs in meters per year.
Rate of sea level changes is 10 m per 1,000 years
Therefore, the rate of sea level change = 10 m ÷ 1000 years
= 0.01 m/yr
Regional erosion occurs at 2 m per 1,000 years
Therefore, Rate in meters per seconds = 2 m ÷ 1,000 years
= 0.002 m/year
Uplift occurs at a rate of 0.1 m per 1,000 years
Thus, rate in meters per seconds = 0.1 m ÷ 1,000 years
= 0.0001 m/yr
Therefore, the rate of sea level change is the fastest at a rate of 0.01 meter/year
As given:
Initial moles of P taken = 2 mol
the products are R and Q
at equilibrium the moles of
R = x
total moles = 2 + x/2
Let us check for each reaction
A) P <-> 2Q+R
Here if x moles of P gets decomposed it will give 2x moles of Q and x moles of R
So at equilibrium
moles of P left = 2- x
moles of Q = 2x
moles of R = x
Total moles = (2-x) + 2x + x = 2 +2x
B) 2P <-> 2Q+R
Here x moles of P will give x moles of Q and x/2 moles of R
So at equilibrium
moles of P left = 2- x
moles of Q = x
moles of R = x/2
Total moles = (2-x) + x + x/2 = 2 + x/2
C) 2P <-> Q+R
Here x moles of P will give x/2 moles of Q and x/2 moles of R
So at equilibrium
moles of P left = 2- x
moles of Q = x /2
moles of R = x/2
Total moles = (2-x) + x + x = 2
D) 2P <-> Q+2R
Here x moles of P will give x/2 moles of Q and x moles of R
So at equilibrium
moles of P left = 2-x
moles of Q = x/2
moles of R = x
Total moles = (2-x) + x/2 + x = 2 + x/2
B is the answer. hope this helps
