How many grams of MgCl2 are present in 80.0 mL of 0.100 M MgCl2 solution?
2007-03-26 04:55:56 · 2 answers · asked by kris h 1 in Science & Mathematics ➔ Chemistry
0.1 mole / 1 L = x mole / .080 L
calculate # of moles from equation above. Take # moles x molar mass of MgCl2 (24.3 + 71.0)
2007-03-26 05:01:48 · answer #1 · answered by physandchemteach 7 · 0⤊ 0⤋
Step a million) Calculate the full form of mols you have; try this via multiplying the form of liters you have (0.225) via the form of mols in step with liter (concentration of the answer 0.450). you ought to get 0.10125 mols. Step 2) analyze the molar mass of MgCl2 (ninety 5.211 g/mol) and multiply the form of mols via the molar mass, you ought to get 9.sixty 4 grams, which you ought to around to 9.6g to admire significant figures given.
2016-12-08 11:36:30 · answer #2 · answered by lemanski 4 · 0⤊ 0⤋