Given that 21 kg of magnesium carbonate is heated, calculate the mass of magnesium oxide formed?

40.3044 g/mol

Explanation:

Calculating the mass of reactants

Magnesium reacts with oxygen to produce magnesium oxide:

2Mg(s) + O2(g) 2MgO(s)

Calculate the mass of magnesium needed to produce 12.1g of magnesium oxide.

(Relative masses: Mg = 24.3, MgO = 40.3)

number of moles of MgO =

=

= 40.3044 mol.

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante

answerlinnaeus;