an object is placed 40 cm in front of a concave mirror of focal length 20 cm. a plane mirror is placed at a distance of 10cm in front of a concave mirror. find the final position of the image
Answers
Samples of simulated lake water are exposed to SO2(g). Two graduated cylinders containing samples of simulated lake water had CaCO3(s) added, and dissolves to form Ca2+ ions and CO32- ions. The chemical reaction of water exposed to SO2(g) is:
H2O(l) + S02(g) --> H2S04(aq) (sulphuric acid) , producing Hydronium ions in solution.
Hydronium ions react with the CO32- ions which then produces,
options:
HCO3-(aq) (weak acid)
H2CO3(aq) (weak acid)
HCO3-(aq) (strong acid)
H2CO3(aq) (strong acid)
Answer:
Samples of simulated lake water are exposed to SO2(g). Two graduated cylinders containing samples of simulated lake water had CaCO3(s) added, and dissolves to form Ca2+ ions and CO32- ions. The chemical reaction of water exposed to SO2(g) is:
H2O(l) + S02(g) --> H2S04(aq) (sulphuric acid) , producing Hydronium ions in solution.
Hydronium ions react with the CO32- ions which then produces,
options:
HCO3-(aq) (weak acid)
H2CO3(aq) (weak acid)
HCO3-(aq) (strong acid)
H2CO3(aq) (strong acid)
Explanation:
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