In each case, identify the element in question: (a) the mass number of an atom is 234 and the atom has 60.0% more neutrons than protons (b) an ion with a 2+ charge has 10.0% more protons than electrons (c) an ion with a mass number of 110 and a 2+ charge has 25.0% more neutrons than electrons

Idon't see the pic?

Ithink ahopefully im correct 

Use the universal gas law formula: pv = nrt now, the key word in this problem is stp, so at stp, temperature will always be 0 degrees celsius and pressure will always be 1.0 atm or 760 torr. given something is at stp, we already know the two variables pressure and temperature. the other thing we can find with the given information is moles. to find moles, just divide grams by molar mass of the element. 16.0g / 2(16.00)g/mol = 0.5 moles plug the values in to the equation pv = nrt (1.0 atm)( x ) = (0.5 )(0+273=273k) the r value is just a constant for when we use atm, liters, moles and kelvin. i'm assuming you want your answer in liters, but if you dont just move the decimal 3 to the right in your final answer. so when plugging these numbers in to your calculator and trying to find x, you get 11.20665 liters using significant figures the answer is 11.2 liters

The correct answer is:   [a]:   the "stratosphere" .