Answer:
Explanation:
Consider the balanced equation shown and identify the statement that is not true.Na2SO4 (aq) + BaCl2 (aq) → 2 NaCl (aq) + BaSO4 (s)
2 NaCl (aq) could also be correctly written as Na2Cl2 (aq).
In a precipitation reaction the insoluble product can be identified by the symbol ________.
(s)
The scientific principle which is the basis for balancing chemical equations is
the Law of Conservation of Mass.
Which statement regarding balanced chemical equations is not true?
Coefficients are used in front of formulas to balance the equation.
The number of each kind of atoms must be the same on each side.
Reactants are written to the left of the arrow.
Subscripts may be changed to make an equation simpler to balance.
When no coefficient is written in front of a formula, the number "one" is assumed.
Subscripts may be changed to make an equation simpler to balance.
Which is the correct equation for the reaction of magnesium with hydrochloric acid to produce hydrogen and magnesium chloride?
Mg + 2 HCl → H2 + MgCl2
When the reaction shown is correctly balanced, the coefficients are:_____ KClO3 → _____ KCl + _____ O2
2; 2; 3
When the reaction shown is correctly balanced, the coefficients are:_____ C6H14 (l) + _____ O2 (g) → _____ CO2 (g) + _____ H2O (g)
2; 19; 12; 14
The balanced equation for the reaction occurring when calcium nitrate solution is mixed with sodium phosphate solution is
3 Ca(NO3)2 (aq) + 2 Na3PO4 (aq) → Ca3(PO4)2 (s) + 6 NaNO3 (aq).
The balanced equation for the reaction occurring when iron(III) oxide, a solid, is reduced with pure carbon to produce carbon dioxide and molten iron is
2 Fe2O3 + 3 C (s) → 4 Fe (l) + 3 CO2 (g).
Which of the following reactions would be classified as oxidation-reduction?
2Na(s)+Cl2(g)→2NaCl(s)2Na(s)+Cl2(g)→2NaCl(s)
Na(s)+CuCl(aq)→NaCl(aq)+Cu(s)
Na(s)+CuCl(aq)→NaCl(aq)+Cu(s)
NaCN(aq)+CuCl(aq)→NaCl(aq)+CuCN(s)
2Na(s)+Cl2(g)→2NaCl(s)2Na(s)+Cl2(g)→2NaCl(s)
Na(s)+CuCl(aq)→NaCl(aq)+Cu(s)
When a solution of iron(III) nitrate is mixed with a solution of sodium hydroxide, a rust colored precipitate forms. This precipitate is probably
iron (III) hydroxide.
In the redox reaction shown, ________ is oxidized and becomes ________.Fe(s) + CuCl2 (aq) → Cu(s) + FeCl2 (aq)
+3.
