Ainda sobre a combustao completa do metanol que pode ser representada pela equação nao-balanceada abaixo. Quando se utilizam 8,0 mols de metanol nessa reação, qual é a quantidade de materia (mol) de agua produzida (em mols)?

(olhe a imagem por favor)

Explanation:

Hello,

In this case, given the properly balanced reaction:

If 8.0 moles of methanol react, we can compute the produced grams of water by noticing the 1:2 molar ratio between them in the chemical reaction (stoichiometric coefficients):

Best regards.

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.