A particle that contains 9 protons, 10 neutrons and 10 electrons is
A particle that contains 9 protons, 10 neutrons and 10 electrons is A. positive ion B. neutral atom…
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In the laboratory preparation of trioxonitrate (V) acid the nitrogen(iv) oxide formed as a by-product…
In the laboratory preparation of trioxonitrate (V) acid the nitrogen(iv) oxide formed as a by-product is removed by…
Ethene is prepared industrially by
Ethene is prepared industrially by A. Reforming B. Polymerization C. Distillation D. Cracking Correct Answer: Option D Explanation…
According to Charle’s law, the volume of a gas becomes zero at
According to Charle’s law, the volume of a gas becomes zero at A. −100°c B. −273°c C. −373°c…
The gas that can be collected by downward displacement of air is
The gas that can be collected by downward displacement of air is A. chlorine B. sulphur (IV) oxide…
The densities of two gases, X and Y are 0.5gdm-3 and 2.0gdm-3 respectively. What is…
The densities of two gases, X and Y are 0.5gdm-3 and 2.0gdm-3 respectively. What is the rate of…
Calculate the mass of copper deposited when a current of 0.5 ampere was passed through…
Calculate the mass of copper deposited when a current of 0.5 ampere was passed through a solution of…
The reddish–brown rust on iron roofing sheets consists of
The reddish–brown rust on iron roofing sheets consists of A. Fe3 + (H2O)6 B. FeO.H2O C. Fe2O3.XH2O D.…
In the diagram above. X is
In the diagram above. X is A. SO3 B. SO2 C. S D. H2S Correct Answer: Option B…
Cu2S(g) + O2(g) → 2Cu + SO2(g) What is the change in the oxidation number…
Cu2S(g) + O2(g) → 2Cu + SO2(g) What is the change in the oxidation number of copper in…