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Ihave a riddle for homework it is "why do people worry so much? "
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The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call
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Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?
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Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)
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Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
Answers: 1
Ihave a riddle for homework it is "why do people worry so much? "...
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