Answer:
Explanation:
In a polar covalent bond, the distribution of common electrons are not shared evenly due to a greater positive charge from one atom's nucleus.Oct 30, 2016
Corrected question:
Bromine-88 is radioactive and has a half life of 16.3seconds. What percentage of a sample would be left after 35seconds? Round your answer to 2 significant digits.
Answer:
23% (3 significant digits)
Explanation:
where is mass remaining
is original mass
t1/2= 16.3s , t=35s
n =35/16.3 =2.147
=
0.2258*100% =22.5%
≈23%
Answer:
You will be 27 years old (✿◠‿◠)
Answer:
0.051
Explanation:
Let's consider the following reaction.
2 SO₂(g) + O₂(g) ⇄ 2 SO₃(g)
We can compute the pressures using an ICE chart.
2 SO₂(g) + O₂(g) ⇄ 2 SO₃(g)
I 3.3 0.79 0
C -2x -x +2x
E 3.3-2x 0.79-x 2x
The partial pressure of sulfur trioxide gas is 0.47 atm. Then,
2x = 0.47
x = 0.24
The pressures at equilibrium are:
pSO₂ = 3.3-2x = 3.3-2(0.24) = 2.82 atm
pO₂ = 0.79-x = 0.79-0.24 = 0.55 atm
pSO₃ = 0.47 atm
The pressure equilibrium constant (Kp) is:
Kp = pSO₃² / pSO₂² × pO₂
Kp = 0.47² / 2.82² × 0.55
Kp = 0.051
Answer:
C. It is reactive because it must gain two electrons to have a full outermost energy level.
Step-by-step explanation:
The electron configuration of this element ends in 2s²2p⁴.
A filled energy level would end in 2s²2p⁶.
The element will be reactive, because it must gain electrons to have a full energy level, and it needs two more electrons to do this.