The reaction is: Mg + 2HCl -----> MgCl2 + H2
<span>M = mol / L </span>
<span>mol = M x L = 4.5 mol/L x 6.3 L = 28.4 mol HCl </span>
<span>1 mol Mg reacts with 2 mol HCl </span>
<span>28.4 mol HCl x (1 mol Mg / 2 mol HCl) = 14.2 mol Mg </span>
<span>Molar mass of Mg is 24.3 g/mol. </span>
<span>14.2 mol Mg x (24.3 g / 1 mol) = 344 g Mg</span>
Technically, "quantum theory" is actually just the theory associated with quantum mechanics, ie; the theory of any objects isolated from their surroundings but, because it is very difficult to isolate large objects from their environments, it essentially becomes a theory of the microscopic world of atoms and sub-atomic particles.
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Answer:The Geocentric and the Heliocentric models are descriptions of the universe known at the time when these models were developed. The main difference between the two models is the perceived center of the known universe. According to the geocentric model, Earth is the center of the known universe
Explanation:I answerd the question before in Earth Science
