Al₂O has a higher percentage of aluminium.
Explanation:
To solve this problem, we have to compare the molar mass of the aluminium in each compound to one another as percentage of the whole compound:
Molar mass of Al₂O = 2(27) + 16 = 70g/mol
Molar mass of Al(NO₃)₃ = 27 + 3[14 + 3(16)] = 213g/mol
Percentage by mass of Al in Al₂O = x 100 = 77%
Percentage by mass of Al in Al(NO₃)₃ = x 100 = 12.7%
Al₂O has a higher percentage of aluminium.
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When salt dissolves in water, the water molecules are attracted by dissolves salt particles. This attraction is called dissociation.
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Answer:
136.33 million mi
or
1.5 astronomical units (AU)
Explanation:
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Perhaps the volumetric flask and the graduated cylinder
The answer is; <span>The moon can be seen from Earth because *sunlight* reflects off the moon’s surface.</span>