Some chemistry questions?

Vicktacular

New member
True or False:
Magnesium will react with O2 in the air.
Magnesium will react with N2 in the air.
Water will react with magnesium oxide.
Water will react with magnesium nitride.
Ammonia gas will be given off as magnesium nitride reacts with water.
Magnesium hydroxide can be heated to give off water.
An empirical formula is the lowest ratio of the masses of the elements present.
An empirical formula is the lowest ratio of the moles of the elements present.
The formula Mg2O4 is an empirical formula.
The formula Mg3O2 is an empirical formula.
A student performed the experiment and recorded the data below. Calculate the mass of each component. Calculate the moles of each component. Calculate the formula of the product based on the EXPERIMENTAL evidence only. Mass of empty crucible + lid: 40.865 g Mass of empty crucible + lid + magnesium: 41.986 g Mass of empty crucible + lid: + white solid (1st heating) 43.486 g Mass of empty crucible + lid: + white solid (2nd heating) 43.452 g Mass of empty crucible + lid: + white solid (3rd heating) 43.450 g
 
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