Answer: Heterogeneous Mixture
Explanation:
<span>1 meter = 100 cm
so 1cm is 1/100 *100 = 1% error.
1 kilogram = 1000g
so 1g is 1/1000 * 100 = 0.1% error.
as 1%>0.1%, the 1cm in a meter is the greater error</span><span>
</span>
Answer:
Db
Dubnium/Symbol
Explanation:
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Mass of iron(ll) oxide= 616.608 g
<h3>Further explanation</h3>
Given
Reaction
2Fe+O2 -->2FeO
479.6 grams of iron
Required
mass of iron(ll) oxide
Solution
mol of iron :
= mass : Ar Fe
= 479.6 g : 56 g/mol
= 8.564
From the equation, mol FeO :
= 2/2 x mol Fe
= 2/2 x 8.564
= 8.564 moles
Mass of iron(ll) oxide :
= mol x MW
= 8.564 x 72 g/mol
= 616.608 g
