For this question, we can use relations for pH and pOH. We calculate as follows:
pOH = -log [OH-]
pOH = -log [<span>1.83x10^-7 M]
pOH = 6.74
pH + pOH = 14
pH = 14 - 6.74
pH = 7.26
pH = -log [H3O+]
7.26 = -log[H3O+]
[H3O+] = 5.46 x 10^-8 M
Hope this answers the question. Have a nice day.</span>
...........................................Yes this is true
<span> Ionic bonds for when two ions become attracted to each other through electrostatic force. The objective for an Ion is to obtain the electron configuration of a noble gas.
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Answer:
The answer to your question is letter B.
Explanation:
Data
Polonium-208 half-life = 2.9 years
Original sample = 2 mg
Total time = 8 years
Process
Mass Time
2 mg 0 years
1 mg 2.9 years
0.5 mg 5.8 years
0.25 mg 8.7 years
The mass of sample must be between 0.5 and 0.25 mg, from the options given the only possible answer is<u> letter B 0.296 mg</u>