3 years ago

Guys please I need an answer for this asap

1 answer:

6 0

I need more information, there are meant to be coefficients in front of one of those ..

but you’d put .2 over the coefficients, and if there is not one, you put an X. then you will cross multiply, and divide if you have 2x or something greater than X.

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How many moles of HNO3 are present in 450 g of HNO3?

iVinArrow [24]

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6 0

3 years ago

Calculate the number of moles in 9 g of water

tangare [24]

Answer:

= 0.5 moles of water

$formular \: mass \: of \: water \: = (2 \times 1) + 16 = 18 \\ 18g \: of \: water \: are \: weighed \: by \: 1 \: mole. \\ 9g \: will \: be \: weighed \: by \: \frac{9 \times 1}{18} \\ = \frac{9}{18} moles \\ = 0.5 \: moles \: of \: water$