A scientist is examining a simple multicellular organism with a nucleus and specialized organelles that was found in a moist env
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Answer: Option (c) is the correct answer.
Explanation:
HF is a weak acid and not a strong acid. This is because fluorine is a highly electronegative atom and when it combines with a hydrogen atom then it will attract the valence electron of hydrogen atom more towards itself.
As a result, it will not dissociates easily to give hydrogen ion. Hence, it acts as a weak acid.
A neutralization reaction is defined as a reaction in which an acid reacts with a base to give salt and water. For example,
It is true that, spectator ions "appear in the total ionic equation for a reaction, but not in the net ionic equation".
Titration is defined as a process in which concentration of an unknown solution is determined using a solution of known concentration.
Thus, we can conclude that the statement HF, HCl, and HNO3 are all examples of strong acids, is false.
Answer:
1) 0.825 grams is the mass of pure calcium carbonate product collected at the end of the experiment.
2) The mass % calcium carbonate in the tablet is 50.58%.
3) The mass % of calcium in calcium carbonate is 40.00 %.
4) Mass of calcium in a tablet is 0.33 g.
Explanation:
Mass of tablet = 1.631 g
Mass of the watch glass = 46.719 g
Mass of the watch glass + mass of calcium carbonate = 47.544 g.
Mass of calcium carbonate = 47.544 g - 46.719 g = 0.825 g
0.825 grams is the mass of pure calcium carbonate product collected at the end of the experiment.
Mass of calcium carbonate = 0.825 g
Percentage of calcium in tablet:
The mass % calcium carbonate in the tablet is 50.58%.
Percentage of calcium in calcium carbonate :
Molar mass of calcium carbonate = 100 g/mol
Atomic mass of calcium = 40 g/mol
Percentage of calcium in calcium carbonate :
The mass % of calcium in calcium carbonate is 40.00 %.
Mass of calcium carbonate = 0.825 g
The mass % of calcium in calcium carbonate is 40.00 %.
Mass of calcium in a tablet : x
Mass of calcium in a tablet is 0.33 g.