5. Dalam rajah di bawah, fungsi f memetakan set X kepada set Y dan fungsi g memetakan set Y
kepada set Z. K4
f
g
X
3x + 2
5 - 9x
Х
Y Y
N
Cari
(a) dalam sebutan x, fungsi
(i) yang memetakan set Y kepada set X,
(ii) g(x).
(b) nilai x dengan keadaan f'g(x) = 2x - 3.​

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?

Classify this reaction: 2al+n2-> aln.