What is the molar of hydrogen sulphide gas in the reaction H2SO4(aq) + 3H2S(g) →…
What is the molar of hydrogen sulphide gas in the reaction H2SO4(aq) + 3H2S(g) → 4S(s) + 4H2O…
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Alkanols have unexpectedly high boiling points relative to their molar masses because of intermolecular
Alkanols have unexpectedly high boiling points relative to their molar masses because of intermolecular A. hydrogen bonding B.…
Sodium chloride is used in the following processes except in the
Sodium chloride is used in the following processes except in the A. treatment of polluted water B. preservation…
The gaseous product formed when ammonia is passed over heated copper (ll) oxide is
The gaseous product formed when ammonia is passed over heated copper (ll) oxide is A. oxygen B. nitrogen…
In a chemical reaction, the reacting species possess energy of motion known as
In a chemical reaction, the reacting species possess energy of motion known as A. potential energy B. free…
The following compounds will decompose on heating except
The following compounds will decompose on heating except A. NaHCO3 B. K2CO3 C. MgCO3 D. Ca(HCO3)2 E. ZnCO3…
Which of the following reactions is accompanied by the first ionization energy of an element…
Which of the following reactions is accompanied by the first ionization energy of an element X? A. X…
The positive of an element in the Periodic Table is determined by
The positive of an element in the Periodic Table is determined by A. its density B. its atomic…
Which of the following electronic structures belongs to a noble gas?
Which of the following electronic structures belongs to a noble gas? A. 1s22s2 B. 1s 22s22p4 C. 1s22s22p63s23p6…
When water is dropped on calcium carbide, the gaseous product is an
When water is dropped on calcium carbide, the gaseous product is an A. alkane B. alkene C. alkyne…