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adelina 88 [10]

4 years ago

10

Hana fills a cup with sandy ocean water. She pours the mixture through a filter. What does she collect that passes through the f

ilter? a sample of pure water a solution of salt in water a suspension of sand in water a colloid of salt in water

2 answers:

Neporo4naja [7]4 years ago

8 0

Answer:

a solution of salt in water

Explanation:

On edgenuity 2020

LekaFEV [45]4 years ago

7 0

a solution if salt in water

Hope it helps

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Answer: The empirical formula is $PbO_2$

Explanation:

Mass of Pb = 4.33 g

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Step 1 : convert given masses into moles

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Moles of O = $\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{0.67g}{16g/mole}=0.042moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For Pb = $\frac{0.021}{0.021}=1$

For O = $\frac{0.042}{0.021}=2$

The ratio of Pb O= 1: 2

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