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Measuring of Quantities

question 1 of 3 Grade: Ten - G10

Q: Calculate the number of moles in 18 g of H₂O (Molar mass = 18 g/mol).

Did You Know?

For equal roots, the discriminant must be zero: $D = b^2 - 4ac = 0$. Here $a = 1$, $b = 4$, $c = k$, so $4^2 - 4(1)(k) = 0$ ⇒ $16 - 4k = 0$ ⇒ $4k = 16$ ⇒ $k = 4$. Therefore, the statement is correct.

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Did You Know?

For equal roots, the discriminant must be zero: $D = b^2 - 4ac = 0$. Here $a = 1$, $b = 4$, $c = k$, so $4^2 - 4(1)(k) = 0$ ⇒ $16 - 4k = 0$ ⇒ $4k = 16$ ⇒ $k = 4$. Therefore, the statement is correct.

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