5. Lead(II) nitrate may be produced by the reaction between nitric acid and lead(II)oxia shown in the equation below:
PbO (s) + 2HNO3(aq) → Pb(NO3)2 (s) + H2O (1)
33.5 g of lead(II) oxide was allowed to react with 175 cm of 1.50 mol dm nitric acid.
Calculate the maximum mass of lead(II) nitrate that could be obtained from this reaction. [4]

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

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