Question
? = 21.08 + 18.99 ×
21.07 What approximate value should come in place of question mark (?) in the following question? (You are not expected to calculate the exact value)Solution
? = 21.08 + 18.99 × 21.07 => ? = 21 + 19 × 21 => ? = 21 + 399 => ? = 420
Chemical equation is balanced according to the law of
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