The properties of a compound are different than the properties of the element that forms it
Answer:
56.28 g
Explanation:
First change the grams of oxygen to moles.
(50.00 g)/(32.00 g/mol) = 1.5625 mol O₂
You have to use stoichiometry for the next part. Looking at the equation, you can see that for every 2 moles of H₂O, 1 mole of O₂ is produced. Convert from moles of O₂ to moles of H₂O using this relation.
(1.5625 mol O₂) × (2 mol H₂O/1 mol O₂) = 3.125 mol H₂O
Now convert moles of H₂O to grams.
(3.125 mol) × (18.01 g/mol) = 56.28125 g
Convert to significant figures.
56.28125 ≈ 56.28
Answer:
Statistically significant.
Explanation:
The common example is tossing a coin.
The probability of tossing a head is 
.
The probability of tossing five heads in a row is 
.
p < 5 %, so this is a <em>statistically significant</em> result.
if someone tossed five successive heads, I would start thinking that the coin was loaded.
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