Answer: False
Explanation: adding heat to matter results in thermal energy.
The Rand water gets its raw water from canal connected with Vaal Dam and also from Vaal River Barrage Reservoir.
Explanation
Rand water is a purified water supplier system which supplies drinking water in South Africa.
It also provides purified water in industries and helps in sanitization of waste water.
The Rand water gets their source from waters in spruits or streams and then they purify it and supply to country like Gauteng province, Johannesburg and other parts of African continent.
It gets source water from canal connected with Vaal Dam and also from Vaal river barrage reservoir.
It is then purified by removing the suspended impurities and disinfecting the water and then supplied by pipelines to each homes.
Answer:
12.9
Explanation:
From the question given, the concentration of the hydroxide ion is given:
[OH^-] = 1.4 x 10^ -13M
pOH =?
pOH = —Log [OH^-]
pOH = —Log 1.4 x 10^ -13
pOH = 12.9
Answer:
Polar covalent bond
Explanation:
On the basis of electronegativity bond could be ionic bond, polar and non pole covalent bond.
Ionic bond:
It is the bond which is formed by the transfer of electron from one atom to the atom of another element.
Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity. The electronegativity difference between bonded atoms is greater than 1.7.
For example:
Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion. Both atoms are bonded together electrostatic attraction occur between anion and cations.
Covalent bond:
It is formed by the sharing of electron pair between bonded atoms.
The atom with larger electronegativity attract the electron pair more towards it self and becomes partial negative while the other atom becomes partial positive. There are two type of covalent bond. Polar and non polar covalent bond. When electronegativity difference is 0.4 - 1.7 bond is polar covalent bond when it is less than 0.4 the bond is non polar covalent.
For example:
In CO the electronegativity of oxygen is 3.5 and carbon is 2.5. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and carbon becomes partial positive. and bond is polar covalent.
The answer is C. <span>The density of the fluid is greater than the density of the object.</span>
