25 Mn
Question 5 (1 point)
The average atomic mass of B is 10.80 u Boron has only two stable...
Chemistry, 27.05.2021 05:30, blueyish6422
25 Mn
Question 5 (1 point)
The average atomic mass of B is 10.80 u Boron has only two stable forms 9 8 (10.00 u) and 3 (11.00 u).
What is the natural percent abundance of B?
A) 3.8%
B) 75%
C) 80%
OD 1.0%
E) 20
Answers: 2
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1) in saturated limewater, [h+ ]=3.98x10-13 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 2) in butter, [h+ ]=6.0x10-7 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 3) in peaches, [oh]=3.16x10-11 m a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 4) during the course of the day, human saliva varies between being acidic and basic. if [oh]=3.16x10-8 m, a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? /
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You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present
Answers: 1
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Is 9 correct? and can someone me with 10? it’s due tomorrow, you
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