Speed in km/hr = 15 x 18
------------
5
= 54 km/hr.
Hope this helps!
Answer:
Option B : burning of wood
Explanation:
Chemical change is a change where a new substance is created like when you will bur wood you get ash this is a new substance, so burning of wood is a chemical change.
Answer:
an isotope has the same number of protons but a different number of neutrons than the other atoms of the same element.
Answer: FeF3 Iron(III) fluoride
Explanation: 5.6 g = 1/10 mole Fe
11.3-5.6g F = 5.7 = 3/10 mole F
