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The oxidation of oxygen in peroxides is?
Peroxides include hydrogen peroxide, H2O2. This is an electrically neutral compound and so the sum of the oxidation states of the hydrogen and oxygen must be zero.
What is the half-life of a third order reaction if k = 1 and a = 0.2 M?
- 24.5 s
- 28.5 s
- 32.5 s
- 37.5 s
[t1/2] = 1.5/ka2;
Putting values [t1/2] = 1.5/(0.2)2 = 37.5 s.
If we have 450g of a NaCL solution that is 35 NaCL w/w %. What is the mass of NaCL?
- 128.5 g
- 129.5 g
- 157.5 g
- 131.5 g
% by weight = (Mass of solute/Mass of solution) * 100
35 = (X/450) *100
X = 35 * 450/100 = 157.5 g