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Chemical,when you light a match stick, you are starting a chain reaction of the substance chemical formula, making it a chemical change
The concentration in mol L-l (M) = 0.717
<h3>Further explanation</h3>
Given
12% solution of tetrahydrate magnesium chloride (MgCl₂)
Required
The concentration
Solution
Tetrahydrate magnesium chloride (MgCl₂)⇒MgCl₂.4H₂O
MW = Ar Mg+2. Ar Cl+8. Ar H + 4. Ar O
MW=24.31 + 2 x 35.45 + 8 x 1.01 + 4 x 16
MW=24.31+70.9+8.08+64
MW=167.29 g/mol
12% solution = 12 % m/v = 12 g in 100 ml solution
For 1 L solution :

The concentration in g/L = 120 g/L
Convert grams to moles :

Answer:
Ammonium nitrate is NH4NO3
iron(II) sulfate is FeSO4
magnesium hydroxide is MG(OH)2
titanium(II) chloride is TiCI2
cobalt(III) oxide is Co2O3
potassium sulfide is K2S
Barium acetate is C4H6BaO4
magnesium bromide is MgBr2
lithium carbonate is Li2CO3
potassium permanganate is KMnO4
Both a particle and a wave?