Answer:
selenium forms 2- ion (Se2− S e 2 − )
H3PO4 has molecular weight of approximately 98 grams per
mole. 4.50 M is equal to 4.50 mole per 1000 mL solution of H3PO4. 255 mL times
4.50 mol /1000 mL times 98 g/mol is equal to 112.455 grams. Note that I
automatically equate 1 Liter to 1000 mL since the given volume is in mL for
easier computation.
Answer:
FeCl3
Explanation:
We'll begin by writing the balanced equation for the reaction. This is shown below:
4FeCl3 + 3O2 —> 2Fe2O3 + 6Cl2
Thus, the limiting reactant can be obtained as follow:
From the balanced equation above,
4 moles of FeCl3 reacted with 3 moles of O2.
Therefore, 8 moles of FeCl3 will react with = (8 x 3)/4 = 6 moles of O2.
From the calculation made above, we can see that a lesser amount of O2 is needed to react completely with 8 moles of FeCl3. Therefore, FeCl3 is the limiting reactant.
The factor that determine how water cycles on earth is the forms that water is found in[solid, liquid and gas].