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LenKa [72]
2 years ago
5

100 POINTS!!!

Chemistry
2 answers:
Paul [167]2 years ago
6 0

what do u need help with u pls respond quickly

Pie2 years ago
3 0

Different masses will change its temperature at different rates when exposed to the same amount of thermal energy because the amount of mass affects an object’s ability to absorb thermal energy. Different materials will change the temperature at different rates when exposed to the same amount of thermal energy because each substance has its own specific heat.

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A 283.3-g sample of X2(g) has a volume of 30 L at 3.2 atm and 27 'C. What is element X?
professor190 [17]

we find the number of moles with the formula

pV=nRT

27C=300k

3.2*30=n*0.082*300

n=96/24.6=3.9 moles

we have the mass ant the number of moles so we can calculate the molar mass

283.3/3.9=72.64g/moles

that means X's mass is 72.64/2=36.3 so the element is Kr(Kriptonium)

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