Answer:
Do research on a Particular topic
Answer:

Explanation:
Assuming that all caculations are at normal pressure and -1.72°C :

Where
is the number of moles of hydrogen
is the mass of hydrogen
is the density of hydrogen
Answer:
-32 Fahrenheit converts to 237.594 Kelvin
Answer:
PBr5 is the formula of phosphorus pentabromide.
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HNO3 and H2SO4 are Arrhenius acids which will increase the concentration of H+ when dissolved in water.
KOH and Ca(OH)2 are Arrhenius bases that increase the concentration of OH- when dissociated in water.