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a).State the Gay Lussac’s Law.
b). Ethene reacts with oxygen according to the equation:
#C_2H_(4(g)) + 3O_(2(g)) → 2CO_(2 (g)) + 2H_2O_(g)#
#15.0 cm^3# of ethene were mixed with #50.0 cm^3# of oxygen and the mixture was sparked to complete the reaction. If all the volumes were
measured at a pressure of one atmosphere and #25^o C#. Calculate the volume of the resulting gaseous mixture.

Answer Text:
a).When gases react, they do so in volumes that bear a simple whole number ratio to one another and to the volumes of the product if gaseous, at constant temperature and pressure.
b).1 mole = #15 cm^3#
⸫ #CO_2# formed = #30 cm^3#, #H_2 O# = #30 cm^3#,
Resulting gaseous mixture is #60cm^3# + #5cm^3# = #65cm^3#