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mamaluj [8]
3 years ago
12

A scientist is conducting an experiment with sand. Some iron filings accidentally fell into the sand. What could the scientist u

se to separate out the two substances? 25 points!! PLZZ HELP
Chemistry
2 answers:
anzhelika [568]3 years ago
7 0
Get a magnet in a bag (inside out) and move the magnet all over the sand/iron and you can collect all the iron and turn the bag right side out and zip up the bag. Now you have the sand and iron separated and it will be harder to accidentally mix them later.
lara31 [8.8K]3 years ago
7 0
Get a magnet and hold the magnet right above the sand so the iron fillings deprecate by attraction to the magnet
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3 years ago
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Need help on this question asap pleasee
algol [13]

Answer:

9.0 moles of CaO

Explanation:

We have the reaction equation as follows;

Fe2O3 + Ca3(PO4)2 -------> 2FePO4 + 3CaO

Now we know from the equation that;

1 mole of iron III oxide yields 3 moles of CaO

Therefore;

3 moles of iron III oxide yields 3 * 3/1

= 9.0 moles of CaO

6 0
2 years ago
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anyanavicka [17]

Answer:

c. precipitation

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Cl⁻(aq) + AgNO₃(ag) ⇒ AgCl(s) + NO₃⁻ (ag)

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b. redox. No, because all the species have the same oxidation numbers in the reactants and the products

c. precipitation. Yes, because an insoluble compound (AgCl) is produced, which then precipitates.

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3 years ago
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Nothing

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