Answer:
109
Explanation:
Mass number = Protons + Neutrons
A = Z + N = 47 + 62 =109
Answer:
the 4th one is the corrent one
Generally for simpler salts like sodium chloride, when the salts gets dissolved in water the temperature slightly decreases. But for salts which comes in the form of pellets which are more exothermic increases the temperature of water. The increase or decrease in the temperature depends upon the type of salt that is dissolved in the water.
Answer:1
Explanation: friction is showing us how in the past
Answer:
sp2
Explanation:
Orbital hybridization is defined as the changes in the orbitals of atoms when they pair with electrons of other atoms to form chemical bonds.
C atoms in C2Cl4 or tetrachloroethene have a total of three bond pairs, two with each chlorine atom and one with other carbon atom and zero lone pairs. Thus, C atoms in C2Cl4 is sp2 hybridized.
Hence, the correct answer is "sp2".
