This one may require abit more thinking to solve the question. Past years preliminary examination questions from local school.
Question:
Which of the following has the same number of atoms as 6 dm^3 of chlorine gas?
a) 20g of argon
b) 0.25g of hydrogen
c) 23g of sodium
d) 8.5g of ammonia
Show your working and reasoning on how you derive to the answer.
40 more days to Singapore Mid-Year Examinations…Stay focused!
“We all fail.
But it is not failing that hurts.
What hurts is knowing that you didn?t give your best.”
~ By Andrew Matthews “Happiness in a Nutshell”
Sean
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