SUB TOPIC : ACIDS. 1 Define acid
using Arrhenius definition 2. Differentiate between
mineral or inorganic acids and organic acids. 3. Give 7
examples each of (a) mineral acids (b) organic acids. 4.
State the sources of the organic acids listed in 3b
above. 5. Differentiate between the strength of an acid
and the concentration of an acid. 6. State 3 physical
properties of acids. 7. State 3 chemical properties of
acids and write a balanced equation for each. 8. What
do you understand by the term basicty of an acid ? 9
Give the basicty of the following acids; HCI, HNO3,
H2S04, H3PO4 and ethanoic acid 10. State 2 uses each
of (a) H2504 (b) HNO3 (c)HCI. Snap your answer to me when you are through.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.