Answer:
number of moles=volume/molar volume or mass/molar mass
Regard the principle of utilization of two gas.
Make a consistent control of hardware containing gas.
Make a consistent control of weight diminishing valves giving gas.
No smoking zone.
2. <span>(Note that sulfur is 2 columns from the right-hand end of the periodic table)</span>
This is a double replacement reaction; the ions switch twice.
I think the answer would be nitrogen
