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The element with the electron configuration 1S\(^2\)2S\(^2\)2P\(^3\) is
What is the molar mass of a substance, if 0.4 mole of the substance has a mass of 25.0g?
Nuclear fission involves the splitting of a heavy element into two nuclei of
A difference between chemical and physical change is that in a chemical change
A particle that contains 11 protons, 12 neutrons and 10 electrons is probably a
When a crystal was added to the clear solution of its salt, the crystal did not dissolve and the solution remained unchanged. This showed that the solution was
Water has the ability to dissolve almost all substance because its molecules has a structure with
Which of the following results in the fall of acid rain?
When 50cm\(^3\) of a saturated solution of sugar of molar mass 342 g at 40\(^o\)C was evaporated to dryness, 34.2g of dry solid was obtained. The solubility of sugar at 40\(^o\)C is
The products of the combustion of candle wax are?
An emulsion may be produced by shaking a detergent solution with
CH3 - CH2 - C≡CH
The hybridization in the compound above is
Which of the following has an isomer?
An example of aliphatic unsaturated hydrocarbon is
Nigerian crude oil is described as light crude because of its
The gas obtained as a product of anaerobic action on organic matter buried in the earth is?
Which of the following typically represents a photochemical reaction?
The sulphide which is insoluble in dilute hydrochloric acid is