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(a) If any, which of the noble gas(es) react with fluorine? Why?
(b) Give a balanced reaction equation of any of the possible reactions in (a).
(a) Give the formulae of the oxides formed by reacting oxygen with Ca, N, S and Zn. [2]
(b) Differentiate between basic and acidic oxides. [3]
(c) Classify the types of oxides represented by your answers in (a).
Determine the formula (that is, find the value of x) of the barium hydroxide sample.
Explain by Newton’s laws, how a heavy ship floats on the water
Oxygen is the most abundant element in the Earth’s crust.
(a) Give the formulae of the oxides formed by reacting oxygen with Ca, N, S and Zn.
(b) Differentiate between basic and acidic oxides.
(c) Classify the types of oxides represented by your answers in (a).
6.1 By using the greater than sign (>), arrange the the following species in terms of ionization energy.
(a) Sc, Ti, V and Cr
(b) Mn2+, Mn4+ and Mn3+
(c) Be, Sr, Ca and Mg
6.2 Arrange the species in 6.1(b)-(c) in terms of atomic or ionic radii (use the > sign).
We are given 50ml of 5L of HCl solutions if it is diluted and made five serial dilutions and then the most diluted sample (50ml) is titrated with 1m of NaOH solution. What volume will be required to neautralize the acidic solution?
Group 8 elements are referred to as noble gasses.
(a) If any, which of the noble gas(es) react with fluorine? Why?
(b) Give a balanced reaction equation of any of the possible reactions in (a).
When iron wool is heated in bromine vapor, iron bromide is produced.
(a) Explain the type of reaction bromine atoms undergo when they are converted to bromide ions.
(b) Write a balanced reaction equation for this reaction
