O2 gas is at 55 C when it occupies a 2.5 L. To what temperature should it be raised to occupy a volume of 7.5 L? 1 point

984 K

Explanation:

T2=T1V2/V1

Remember to change C to K

You can check this by knowing that V and T at constant P have a proportional relationship. Hence, this is correct.

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles