Concept explainers
(a)
Interpretation : The mass percent composition for the given compound should be calculated
Concept Introduction : Mass percent composition can be given as:
It can be written as:
(b)
Interpretation : The mass percent composition for the given compound should be calculated
Concept Introduction : Mass percent composition can be given as:
It can be written as:
(c)
Interpretation : The mass percent composition for the given compound should be calculated
Concept Introduction : Mass percent composition can be given as:
It can be written as:
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Basic Chemistry
- NED g) +3 H20) 6:47 1 4 НВО Мах . Which reaction is an example of a precipitation reaction? (A) H2CO3(aq) - H20(1) + CO2() (B) H2SO4(ag) + Ca(OH)2(ag) CasO4(ag) +2 H200) (C) 6 HCI(ag) + 2 Al)-2 AICI3(aq) +3 H2) (D) FeC3(ag) +3 KOH(aq) - Fe(OHj3()+3 KCKa) (E) 2 Hg() + 02(g) -2 HgOs) (10). Which reaction is an example of both a precipitation and a neutralization? (A) H3PO4(aq) + 3 KOH(aq) - (B) FeC13(aq) + 3 +3 KCI(aq) a) + Ba(OH)2(ag) → BaSO4) + 2 H200) (E) 2 C) + 02(g)-2 COg) (11)* All of the statements regarding redox reactions are true except (A) a reducing agent causes another substance to be reduced. (B) halogens usually behave as oxidizing agents because they readily gain electrons. (C) metal ions are produced when pure metals are oxidized. (D) when a substance is oxidized its charge (or oxidation number) decreases. (E) alkali metals oflen behave as reducing agents because they readily lose electrons. (12) * In a typical oxidation-reduction reaction the electrons are transferred…arrow_forward20 cm3 of hydrogen peroxide solution of unknown concentration reacts completely with 12.15 cm3 0.04 mol/dm3 of potassium permanganate solution in sulfuric acid media. Calculate the mass concentration of hydrogen peroxide in g/dm3. How many cm3 (USC) of oxygen is formed? (2.07; 29.77)arrow_forward(3.9)Calculate the percent composition of sulfur in aluminum sulfate, Al2(SO4)3. 28.1% 17.7% 71.9% 33.6% ◄ Previousarrow_forward
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