up 1 .. reaction: 2 Na (s) + 2 H2O (l) -----> H2 (g) + 2 NaOH (aq) 2. Molar masses M [g / mol] specify (rounded figures!) 2 + 23 g / mol 18 2 g / mol 1 * 2 g / mol 40 2 g / mol
- Fabric portions m [g] write down: 0,184 g 0,144 g 89.6 mL xg = 0.089 g / L * 0.08961 = 0.008 L g
- Amount n [mol] calculate: 0.004 mol 0.004 mol 0.004 mol
n = m / M takes 0,184g hot divided by 2 + 23g / mol were 0,184 divided by 24. Since coming but 23 ^ 3000 out and are no 0,004mol as in Lösung.Kann me maybe someone so I explain that too understand?
The best answer
The reaction equation is correct.
The molar masses of the individual substances (You need the periodic table):
Na: 23 g / mol; H₂O: 18 g / mol; H₂: 2 g / mol; NaOH: 40 g / mol
The fabric portions: The have not been given from you. I'm therefore a mass of materials of the molar masses (see above).
The amount of material n: This here is the same as the coefficient for the individual substances in the adopted by me food servings. So for example for sodium is here n = 2 mol.
If other material portions are given, then the relationship you mentioned n = m / M.
The thing is not really understandable. For example, what does the line
Fabric portions m [g] write down: 0,184 g 0,144 g 89.6 mL xg = 0.089 g / L * 0.08961 = 0.008 L g
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