Answer:
Explanation:
Potassium iodide reacts with oxygen in presence of water to produce potassium hydroxide and potassium diiodoiodate(I) .
5KI + 2H₂O + O₂ =4 KOH + I₂ + K(II₂) .
Answer:
Carbon is a soft, dull gray or black non-metal that you can scratch with a fingernail. Th density of carbon as graphite is 2.267 g/mL, which means it will sink in water. Chemical Properties: Carbon, as graphite, burns to form gaseous carbon (IV) oxide (carbon dioxide).
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Answer: a) 0.06 M
b) 3.13 grams.
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
Moles of
The balanced reaction for dissociation will be:
Thus for 4 moles of , there is 1 mole of
Thus moles of
Molarity of
Thus the molarity of the solution = 0.06 M
b) Mass of =
Thus mass of Wenzhou use is 3.13 grams.
The balanced chemical equation Lead IV oxide decomposes
to yield lead II oxide and a colorless gas is
Pb3O4 → 3PbO + 1/2O2(g). The key in the balancing of
chemical reaction is to make sure that you got the exact chemical formula of
the substance that is reacting and the yielded product. After getting the
formula, identify first the hardest element/atom to be balanced such as Na, Zn,
Cl, etc. Then proceed to the easier ones such as O, H. Make sure to not the
atoms present in the molecule of the substance.