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Bas_tet [7]
4 years ago
15

Examine the chemical equation Al + O2 Al2O3

Chemistry
1 answer:
AURORKA [14]4 years ago
5 0
I think it is aluminum oxide

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Find the formula of the ionic compound made from aluminum (Al) and oxygen (O).
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Answer:

Explanation:

% yields =  <u>experimental yields</u> / theoretical yields )x 100%

              =( 302 ÷ 320 )x 100% = 94.4 %

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or u can use this law :

% error =(theoretical  value - experimental value )/ theoretical value) x 100%

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What is the length (in cm) of the side of an iron ingot (rectangular box) that has a mass of 4.578 kg and has width = height = 5
AfilCa [17]
Since we have the mass of the iron ingot we can get its volume by dividing the mass (4.578) by the density of iron (7874 kgm^-3) and we get that the volume is 5.8140716x10^-4 m^3. now we convert the volume from m^3 to cm^3(1m^3=1000000cm^3) and so by multiplying  5.8140716x10^-4 by <span>1000000 we get:581.4cm^3 (1 decimal place).

the volume for any  cuboid is V=l x w x s we have the volume, the length and the  width, so we plug in the values and solve for s
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 the answer is rounded to three significant figures

hope i helped
5 0
4 years ago
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