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Molarity can only be determined within an aqueous solution, what you just stated is impossible. Sodium Carbonate in solid state has no molarity. However, if you simply put say 100.00g of Sodium Carbonate in 100mL of water then you would be able to find molarity quite quickly. The molecular mass of Sodium Carbonate is 105.98g which is equal to one mole of Sodium Carbonate, 100.00/105.98=0.94357 moles of Sodium Carbonate divided by 100mL (0.1L) of water (0.94357/0.1=9.4357) would give you a molarity of 9.4357. Now, all you'd have to do is plug it into Molarity 1 * Volume 1 = Molarity 2 * Volume 2. 9.4357 * 100 = (the molarity your teacher wants) * (the volume your teacher wants)
I hope that all makes sense, it's kinda difficult to explain over writing. And yes, that's definitely 1st year chem in high school lol
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