Physical properties are those which can be observed without any change in composition of the substance. Hence, a is the answer.
Its doesn't dissolve in water!
Answer:
Diminish reliance on foreign sources of oil
Explanation:
Latent heat of melting is the energy that a solid absorbs to change its phase as its liquid. During this process, since all energy is used to change the phase, the temperature is constant.
Here the latent energy of melting for 1 g of ice is 80 calories and that 1 g of ice only absorbed 60 calories. hence the phase is not changed because it requires more 20 calories to melt.
Hence 1 g of ice remains as its solid phase (ice).
What of the gasses is N and the flame changes it's color from Orange to blue
