HCl + Mg -----> MgCl2 + H2
HCl and Mg are two chemicals. There is no variable involved - independent or otherwise!
HCl is the limiting reagent.
Clonidine is a drug that is used to treat attention deficit hyperactivity disorder (ADHD) and hypertension. Clonidine HCl is the hydrochloride salt of Clonidine (the free base), and it is more soluble in water than ins the free base. The 0.1 mg is the usual oral dose.
Mg + 2HCl = MgCl2 + H2
Mg + 2HCl ------> MgCl2 + H2 73g of HCl reacts with 24g of Mg 1g of HCl reacts with 24/73g 9.125g of HCl reacts with 24/73*9.125= 3g of Mg
Im assuming you mean Mg(OH)2 and not MgOHThe reaction between Mg(OH)2 and HCl is as follows: Mg(OH)2 (aq) + 2HCl (aq) -> MgCl2 (aq) + 2H2O (l)First the number of mole is found: n(HCl) = c × v = 0.100M × 0.200L = 0.0200mol (to 3 significant figures)Next we find the number of mole of Mg(OH)2:n(Mg(OH)2) ÷ n(HCl) = Coefficient of Mg(OH)2 ÷ Coefficient of HCl n(Mg(OH)2) ÷ n(HCl) = 1 ÷ 2 therefore:n(Mg(OH)2) = (1 ÷ 2) × n(HCl) n(Mg(OH)2) = (1 ÷ 2) × 0.0200moln(Mg(OH)2) = 0.0100mol (to 3 significant figures)Finally we calculate the volume of Mg(OH)2 reacted:v(Mg(OH)2) = n ÷ cv(Mg(OH)2) = 0.0100mol ÷ 0.500MThereforev(Mg(OH)2) = 0.0200L (to 3 significant figures) = 20.0ml (to 3 significant figures)
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magnesium chloride
h2
MgCl + H20