![What weight of NaCl is needed to make 2.0 dm³ of a 1.5M solution? [Na = 23, Cl = 35.5]](https://erudites.ng/wp-content/uploads/2020/06/past-questions-and-answers.jpg)
by Sunday | Oct 13 | Chemistry JAMB
A. 116 g B. 175 g C. 87 g D. 58 g Correct Answer: Option B – 175 g Explanation Molar mass of Nacl = 23 + 35.5 = 58.5 g/mol Number of moles of Nacl = conc. in mol/dm³ X vol. in dm³ = 1.5 X 2.0 = 3.0 moles 1 mole of NaCl has a weight of 58.5 X 3 =...
by Sunday | Oct 13 | Chemistry JAMB
A. burn a lot of fossil fuels B. have very few plants C. are surrounded by water D. are overpopulated Correct Answer: Option A – burn a lot of fossil fuels
by Sunday | Oct 13 | Chemistry JAMB
A. surface area B. solubility C. concentration D. quantity Correct Answer: Option A – surface area
by Sunday | Oct 13 | Chemistry JAMB
A. graphite B. coal C. diamond D. wood Correct Answer: Option D – wood
by Sunday | Oct 13 | Chemistry JAMB
A. are very reactive and unstable B. are malleable and ductile C. have high melting and boiling point D. conduct heat and electricity Correct Answer: Option A – are very reactive and unstable
by Sunday | Oct 13 | Chemistry JAMB
A. Ca(NO3)2 B. Cu(NO3)2 C. AgNO3 D. NaNO3 Correct Answer: Option C – AgNO3
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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