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H N O_{3}

H_{2} O

H N O_{3}

H_{2} O

এর % কত?

H N O_{3} 68.2 %, H_{2} O 31.8 %

H N O_{3} 70.2 %, H_{2} O 32.8 %

H N O_{3} 39.2 %, H_{2} O 61.8 %

H N O_{3} 31.8 %, H_{2} O 68.2 %

ANS : 1

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