The subscript 3 outside of the parentheses means to multiply everything in the parentheses by 3, so it becomes a matter of addition:
3*(CH3) * (1 carbon atom)/(CH3) = 3 carbon atoms in (CH3)3
CH has one carbon atom and one hydrogen atom, so:
1 carbon atom in CH
Add both of them together, and you get 4 carbon atoms in isobutane
A 50.0ml- volume of 0.15M HBr is titrated with 0.25M KOH . Calculate the pH after the addition of 13.0ml of KOH.
Answer: you simple have to do the following:
moles HBr = 0.0500 L x 0.15 M=0.0075
moles KOH = 0.0200 L x 0.25 M=0.0050
moles H+ in excess = 0.0075 - 0.0050= 0.0025
total volume = 0.070 L
[H+]= 0.0025/0.070=0.0357 M
pH =1.45
I hope it helps, Regards.
Answer:
It should be A. I've never heard of freezing of sediments
Answer:
C
Explanation:
b/c when copper and zinc metal are addedto solution,then the solution will be consider under redox reaction
The change in internal energy of the system is 1644 Joules.
<u>Given the following data:</u>
To find the change in internal energy of the system, we would apply the First Law of Thermodynamics.
Mathematically, the First Law of Thermodynamics is given by the formula:
Substituting the values, we have:
<em>Change in internal energy, </em><em> = </em><em>1644 Joules.</em>
Therefore, the change in internal energy of the system is 1644 Joules.
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