Question #94985

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Answer 1 · 2014-05-19T19:43:31

To solve this problem we would use the combined gas law.

The formula for the combined gas law is
#((P_i)(V_i))/T_i = ((P_f)(V_f))/T_f#

We begin by identifying the values for each of the variables and identifying the missing value.

#P_i# = 715 torr
#V_i# = 250. mL
#T_i# = 35 C + 273 = 308 K

#P_f# = 925 torr
#V_f# = ???
#T_f# = 85 C + 273 = 358 K

Remember to always convert Celsius to Kelvin for the gas laws.
#C + 273 = K#

#((715 trr)(250. mL))/(308 K) = ((925 trr)(x))/(358 K)#

#((358 K)(715 trr)(250. mL))/((308 K)(925 trr)) = (x L)#

#x L = 225 mL#

I hope this was helpful.
SMARTERTEACHER