Answer:
a) 0
b) 4
c) 4
d) 4
e) 2
f) 4
<u>Explanation: No. unpaired electrons:</u>
a) square planar, strong field
d⁴ 0
b) tetrahedral, strong field
d⁴ 4
c) Octahedral, weak field
d⁴ 4
d) square planar, weak field
d⁴ 4
e) Octahedral, strong field
d⁴ 2
f) tetrahedral, weak field
d⁴ 4
М(СО₂)=165 г
н(СО₂)=м(углекислого газа)/М(СО₂)
Н=Nₐ*м(углекислого газа)/М(СО₂)
Н=6.022*1023 * 165/44.01=2.258*10²⁴
About <u>1 in 500,000,000</u> molecules in a glass of water are dissociated.
<h3>What is water?</h3>
Water can be defined as a liquid molecule or chemical compound that typically comprises two (2) main chemical elements in a ratio of two (2) atoms of hydrogen to one (1) atom of oxygen. This ultimately implies that, these two (2) chemical elements include the following:
Water is an amphoteric chemical compound (substance), which ultimately implies that it can accept a proton that is also acting as a base, while also donating a proton that acts as an acid as shown in the balance chemical reaction below:
2H₂O(l) ⇄ H₃O⁺(aq) + OH⁻(aq)
Based on scientific research and experiments, approximately one (1) water molecule in half a billion (500,000,000) dissociate into an OH⁻ ion, especially by losing a proton to another water molecule.
Read more on water here: brainly.com/question/15164981
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Answer:
32.4°C
Explanation:
Consider the following expression:
P•V/T =P'•V'/T'
Where P and P' are respectively the initial and the final pressure, V and V's are respectively initial and final volume, and T and T' are respectively initial and final temperature.
We know that the pressure cannot change, so it means that P = P'
We also know that the volume must be increased in 20%, and if we multiply the volume by 1.2 is like increase it in 20%, so we can write that V' = 1.2•V, and changing a little more we can write that V'/V = 1.2
So let's do some maths:
P•V/T = P'•V'/T'
T'•P•V/T = P'•V'
T'•P•V = P'•V'•T
T'=P'•V'•T/P•V
We know that P'=P so the division is equal to 1:
T'= 1•V'•T/V
We also know that V'/V = 1.2, so:
T' = 1.2•T
And we know the value of T, it's 27, so now we just have to solve it:
T' = 1.2•27
T' = 32.4°C
well you can't walk through the air but you can't walk through a concrete wall because all of the solid atoms holding it together