E sure you have your work written down, because each question will require a value and a 1 point
An inflatable pool toy occupies a volume of 12.59 L contains 2.333
moles of air at a pressure of 31.2 psi. What is the temperature of the
air in Kelvin, with 1 decimal point?
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it would be d. henry moseley

hope this !

and sorry if i'm late. have a good rest of your day! : d

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.