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2 years ago

The reaction 4al(s) + 3o2(g) --> 2al2o3(s) ?h = -3351 kj is _, and therefore heat is _ by the reaction

Chemistry

1 answer:

kondor19780726 [428]2 years ago

6 0

Exothermic, release/given off

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Relative formula mass of glucose? (C6H12O6)

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To find the mass of glucose, you must multiply the atomic weight of each of the elements in the molecule by the subscripts in the formula:

$C_{6}=6*(12.01g)=72.06g$

$H_{12}=12*(1.008g)=12.096g$

$O_{6}=6*(15.999g)=95.994g$

Then you add all of them together:

$72.06g+12.096g+95.994g=180.15g$

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Answer is option D. All of these choices are correct.

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3 years ago

There are 3 different possible structures (known as isomers) for a dibromoethene molecule, C2H2Br2. One of them has no net dipol

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2 years ago

Which of the following are strong electrolytes? Hcl hc2h3o2 nh3 kcl

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Strong electrolytes are strong bases and acids.
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CH3COOH is acetic acid, a weak acid. Only some of it will dissociate (to H+ and acetate ions), thus, it will only be a weak electrolyte.
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The reaction 4al(s) + 3o2(g) --> 2al2o3(s) ?h = -3351 kj is _____, and therefore heat is _____ by the reaction

The reaction 4al(s) + 3o2(g) --> 2al2o3(s) ?h = -3351 kj is _, and therefore heat is _ by the reaction