No. In fact that is one reason for making alloys.
Use the one that is most likely to occur. In the case of the Fe metal, the USUAL oxidation is to the Fe^2+ and then to Fe3+ and not Fe to Fe^3+ in one step. That isn't always true but probably 90% or better. Most of the other metals do likewise.
No. The pH of a solution of NaHCO3 is about 8.3. Within reason, that is true regardless of the concentration of NaHCO3.
understanding angels and unit angels.
This reminds me of "How many angels can stand on the head of a pin?" You must mean angle.
Use the dilution formula c1v1 = c2v2 c = concn v = volume. 0.015M x 10mL = 0.10M x ?mL. Solve for ?mL.
2KClO3 ==> 2KCl + 3O2 mols KClO3 = g/molar mass = ? Convert mols KClO3 to mols O2 using the coefficients in the balanced equation. Now convert mols O2 to grams. g = mols O2 x molar mass O2
See your other post.
mols NaBr = 100 g NaBr x (1 mol NaBr/102.89) = 0.972 mols NaBr. 0.972 mols NaBr x (1 mol F2/2 mols NaBr) = 0.486 mols F2. g F2 = 0.486 mols F2 x (19 g F2/1 mol) = ? I think this step in your work is what your teacher would prefer you did differently. Moles F2 needed = 0.972 mo...
Semantics is the only difference. A fluorine molecule is F2. Two molecules of fluorine is 2F2. Two fluorine molecules is 2F2.
N2 + 3H2 ==> 2NH3 16 g N2 = 16/28 mols = estimated 0.6. 0.6 x (2 mols NH3/1 molN2) = 0.6 x 2/1 = ?
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