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Chemical Reactivity (Group 1)

If 3 moles of...

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If 3 moles of oxygen combines with aluminium the weight of aluminium used in the reaction

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moles of oxygen combine with aluminium to form

A l_{2} O_{3}

, then the weight of aluminium metal used in the reaction is:

[atomic weight of

A l = 27

27

g of aluminium combines with hydrogen forming

30

g of hydride. The equivalent weight of aluminium (in g) is:

Aluminium combines with oxygen to form its oxide which fades its lustre.

K C l O_{3}

is heated in the presence of

M n O_{2}

. The produced oxygen is used to react with aluminium. Find the number of moles of aluminium oxide formed.

1 \frac{1}{2}

moles of oxygen combine with

A l

A l_{2} O_{3}

, the weight of

A l

used in the reaction is:

(A l = 27)

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