Answer:
pooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooop
Explanation: fart
No. of moles = given mass/atomic mass
= 452/40
= 11.3.
Thus, there are 11.3 moles
Answer: The atomic radius of a hydrogen atom is 742=37 pm 74 2 = 37 pm .
Explanation:
Answer:
Option D, Index fossil helps scientists to determine the relative ages of rocks by their positions
Explanation:
Index fossils are arranged in layer in such a way that the lowest layer represent the oldest fossil and the top most layer represents the youngest fossil. Scientist use this concept to determine the relative age of the rocks based on their position beneath the earth’s surface
Hence, option D is correct
