Since the comb is positively charged, the hair will stick to the comb.
I think
Answer: Option (a) is the correct answer.
Explanation:
When two or more atoms are chemically combined together then the product formed is known as a molecule.
These atoms can be bonded through either covalent or ionic bonds.
For example, a water molecule consists of two hydrogen atoms combined with an oxygen atom. Chemical formula of water is
.
Thus, we can conclude that an element can be made of many elements.
1) gain
(just remember this OIL-Oxidation Is Loss and RIG-Reduction Is Gain)
2) decrease
200 kJ.
For questions like these, it's generally the same number. See <span>First Law of Thermodynamics. </span>