<span>B. astreoids, comets, and meteors
All of these are smaller than planets
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yes it is possible to have a reaction where kc =kp. these is possible in condition when the number of product and the number of moles of a gas is equal.This is also possible when there is equal number of moles on each side and were the change of n =o
Answer:
See figure 1
Explanation:
For this question, we have to remember that in the lewis structures all atoms must have<u> 8 electrons</u>. And each atom would have a different value of <u>valence electrons</u>:
Carbon => 4
Oxygen=> 6
Hydrogen=> 1
Additionally, for the <u>hybridizations</u> we have to remember that:
=> 4 single bonds
=> 1 double bond
=> 1 double bond
With this in mind, the formaldehyde and formic acid would have carbons and the ethanol an carbon.
Finally, for the oxidation state. We have to remember that <u>if we have more bonds with oxygen, we will have more oxidation</u>. Therefore, the carbon that has more oxidation is the one in the formic acid (we have several bonds with oxygen).
See figure 1
I hope it helps!
Half life is determined using the equation expressed as:
A = Ao e^-kt
First, we need to find for the value k.
A = .67Ao = Ao e<span>^-k(33 min)
k = 0.0121
The half-life is then calculated as follows:
</span>A = .5Ao = Ao e<span>^-0.0121(t)
</span><span>t = 57.28 min
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Answer:
pH range = 2.74-4.74
Explanation:
The pH range of a buffer falls in between one unit on either side of pKa.
The given weak acid is HF and its Ka = 1.8X10⁻⁴
pKa = -log(Ka)
pKa = -log(1.8X10⁻⁴)
pKa = 3.74
The pH range is 3.74-1 = 2.74 to 3.74+1 =4.74
pH range = 2.74-4.74