![If the solubility of KHCO3 is 0.40 mole dm‾³ at room temperature, calculate the mass of KHCO3 in 100dm³ of the solution at this temperature. [KHCO3 = 100gmol]](https://erudites.ng/wp-content/uploads/2020/06/past-questions-and-answers.jpg)
by Sunday | Aug 20 | Chemistry WAEC
A. 4.0g B. 10.0g C. 40.0g D. 100.0g Correct Answer: Option A – 4.0g
by Sunday | Aug 20 | Chemistry WAEC
A. Sodium tetraoxosulphate (VI) B. Potassium hydroxide C. Ammonium chloride D. Sodium trioxocarbonate (IV) Correct Answer: Option C – Ammonium chloride
by Sunday | Aug 20 | Chemistry WAEC
A. NH4CI B. MgSO4.7H2O C. CH3COONa D. NaHCO3 Correct Answer: Option D – NaHCO3
by Sunday | Aug 20 | Chemistry WAEC
A. attainment of dynamic equilibrium B. loss of heat to the surrounding C. evolution of gas as it proceeds D. positive change in value of enthalpy Correct Answer: Option B – loss of heat to the surrounding
by Sunday | Aug 20 | Chemistry WAEC
30cm³ pf hydrogen at s.t.p combine with 20cm³ of oxygen to form steam according to the following equation 2H2(g) + O2(g) → 2H2O(g). Calculate the total volume of the gaseous mixture at the end of the reaction A. 50cm³ B. 35cm³ C. 30cm³ D. 25cm³ Correct Answer: Option...
by Sunday | Aug 20 | Chemistry WAEC
A. is inflammable B. is diatomic C. exhibits isotopy D. is a component of water Correct Answer: Option A – is inflammable
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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