Fill in the missing parts of the following nuclear reactions: 1) 235,2U 42_He + 23190 Th 2) 1H + 3H
3) 94 Be + 'H → 42 He +​

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

Will mark brainliest how many electrons can be held in the energy level n = 4?

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.