Using the chemical equation provided, calculate the number of moles of hydrogen sulfide produced when 0.28 mol of aluminum sulfide and 1.30 mol of water react. nearest hundreths.
Al2S3 + 6H2O à 2Al(OH)3 + 3H2S

no but i do not usually comment or use my voice that much when it comes to social media

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

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.