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stealth61 [152]
3 years ago
14

Help me please I need to pass my exam

Chemistry
1 answer:
Troyanec [42]3 years ago
8 0

Answer:

I think it is 1115 kJ but I don't see the answer

Explanation:

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2 years ago
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3 years ago
First, get about 20 mL of the quinine stock solution in a clean beaker to prepare 250 mL of about 2 ppm quinine in 0.05 M H2SO4.
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Answer:

Volume of acid, Va=250mL; Volume of quinine,Vb=20mL; Molarity of acid, Ma=0.05M.

Molar mass of acid= H2+S+O4= 2+32+(16X4)= 2+32+64=98g

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