Which of the following set of equations could be used to represent the standard enthalpy…
Which of the following set of equations could be used to represent the standard enthalpy of formation of…
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An aqueous solution of CaCI2 is
An aqueous solution of CaCI2 is A. acidic solution B. alkaline solution C. a buffer solution D. a…
The colour of phenolphthalein indicator in dilute HNO
The colour of phenolphthalein indicator in dilute HNO is A. colourless B. orange C. pink D. purple Correct…
When concentrated H2 SO 4 is added to NaCI (s), the gas evolved
When concentrated H2 SO 4 is added to NaCI (s), the gas evolved A. bleaches damp blue litmus…
Diamond does not conduct electricity because it
Diamond does not conduct electricity because it A. has no free valence electrons B. is a giant molecule…
The collision theory proposes that
The collision theory proposes that A. reactants collide more frequently to bring about reduction in the reaction rate…
Which of the following gases has the lowerst rate of diffusion under the same conditions…
Which of the following gases has the lowerst rate of diffusion under the same conditions of temperature and…
In a fixed volume of a gas, an increase in temperature results in an increase…
In a fixed volume of a gas, an increase in temperature results in an increase in pressure due…
If 5.00cm3 of 0.20 mol dm-3Na2CO3 was diluted with distilled water to obtain 250 cm3…
If 5.00cm3 of 0.20 mol dm-3Na2CO3 was diluted with distilled water to obtain 250 cm3 solution, what is…
Which of the following compounds with the corresponding masses contain the highest percentage of nitrogen?…
Which of the following compounds with the corresponding masses contain the highest percentage of nitrogen? [N = 14]…