2009
In bonded atoms, increase in electronegativity difference,
See more
2009 WAEC SSCE Chemistry Past Questions
2009
Which of the following arrangements is in order of increasing ionization energy?
See more
2009
Which of the following properties of covalent compounds is not correct? They
See more
2009
Which of the statements about the behaviour of the atom is correct?
See more
2009
What is the value of -14oC on the Kelvin temperature scale?
See more
2009
What is the percentage by weight of calcium in Ca(OCI)2? [Ca = 40, Cl = 35.5, O = 16]
See more
2009
Consider the reaction represented by the equation: 2NaHCO3 → Na2CO 3 + H 2O + CO 2. What is the mass of sodium trioxocarbonate (lV) produced by the complete decomposition of 33.6 g of sodium hydrogen trioxocarbonate (IV)…
See more
2009
How many molecules are there in 14 g of nitrogen at s.t.p.? [N = 14, Avogadro's constant = 6.02 x 1023 mol-1]
See more
2009
The number of particles in one mole of a chemical compound is the
See more
2009
Salts that contain water of crystallization are said to be
See more
2009
Consider the reaction represented by the following equation: H 2(g) + \(\frac{1}{2}\) O(g) → H 2O(g) ∆H =-285.8 KJmo -1 ∆H represents the enthalpy of
See more
2009
In a chemical reaction, ∆H is positive when
See more
2009
In a mixture of gases which do not react chemically together, the pressure exerted by the individual gases is called
See more
2009
Which of the following expressions correctly represents Charles' law?
See more
2009
A solution that contains as much solute as it can dissolve at a given temperature is said to be
See more
2009
Which of the following hydroxides will readily dissolved in water?
See more
2009
Which of the following compounds is not a double salt?
See more
2009
Which of the following dilute acids does not react with metals to liberate hydrogen?
See more
2009
Which of the following substances is the anode in the dry Leclanche cell ?
See more
2009
Which of the following factors will affect the rate of the reaction represented by the equation? 2HCI(aq) + CaCO 3(s) → CaCI2(aq) + H2O (I) + CO2(g) l. Pressure ll. Concentration III. Nature of reactants IV. Temperature
See more