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Ada yg bisa bantuu??tolongg yaaa pleeasee ini mhh!!

1. Massa HCOONa yg harus dilarutkan ke dalam 500 ml air agar memiliki pH sebesar 8 + log 5 adalah.... (Ka HCOOH = 1,8 × 10 pangkat-4)
A. 0,53 gram
B. 1,53 gram
C. 15,3 gram
D. 1,16 gram
E. 11,6 gram
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