Chemistry The heaviest naturally occurring element is: Mercury Uranium Thorium Polonium Mercury Uranium Thorium Polonium ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the mass percentage of carbon in carbon dioxide (CO2) 0.201 0.323 0.273 0.158 0.201 0.323 0.273 0.158 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal used to galvanise iron to protect it from rusting is Antimony Chromium Lead Zinc Antimony Chromium Lead Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry The oxidation number of nickel in K4[Ni(CN)4] is 4 Zero –4 8 4 Zero –4 8 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Laughing gas is Nitrogen pentoxide Nitric oxide Nitrogen trioxide Nitrous oxide Nitrogen pentoxide Nitric oxide Nitrogen trioxide Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal that is used as a catalyst in the hydrogenation of oils is Pt Pb Ni Cu Pt Pb Ni Cu ANSWER DOWNLOAD EXAMIANS APP
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