Answer: Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light.
Explanation: In an exothermic reaction, energy is released because the total energy of the products is less than the total energy of the reactants.
Answer:
gasese molecules are always in free state
Explanation:
yes of course...evaporation takes place in human body also because the evaporation is the process of absorption of liquid and.. if our body sweats then it gets evaporated by sun and other sources not only this.. water that is present inside the body also gets evaporated...
hope it helps
Answer:
m = 176.12 g
Explanation:
Let's write the reaction again:
Mg(s) + 2HCl(aq) --------> MgCl₂(aq) + H₂(g)
This reaction is a simple displacement reaction, in this case, the magnesium is displacing the atoms of hydrogens to form MgCl₂. 1 mole of Mg reacts with 2 moles of HCl. If the magnesium is the limiting reactant, we need to calculate the theorical yield of MgCl₂. The mole ratio between these two is 1:1 so, all we have to do is calculate the moles of magnesium and then the moles of MgCl₂:
moles Mg = 45 / 24.3 = 1.85 moles
As the mole ratio is 1:1 then:
moles Mg = moles MgCl₂ = 1.85 moles
Now, we calculate the mass using the molecular mass:
m = 1.85 * 95.2
<h2>
m MgCl₂ = 176.12 g</h2><h2>
This is the theorical yield</h2>
