50% अम्लीय 9 लीटर द्रव में कितना पानी मिलाया जाये कि अम्लीय सान्द्रता 30% रह जा
(a)4.5 लीटर
(b) 3 लीटर
(d) 7.5 ली.
(c) 6 लीटर
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Answer:
(d) 6 liters
Step-by-step explanation:
thanks for 5 Mark's
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