Chemistry
The absolute temperature of a gas is doubled and the pressure is reduced to half, the volume of the gas

Remains unchanged
Will be doubled
Will increase four-fold
Will be reduced to half

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Chemistry
Antacid tablets consist of

Hydroxides of magnesium and sodium
Hydroxides of sodium and aluminium
Hydroxides of sodium, magnesium and aluminium
Hydroxides of magnesium and aluminium

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