WAEC 1989 A 117200 65. An electric heater immersed in some water raises the temperature of the water
from 40°C to 100°C in 6 minutes. After another 25 minutes, it is noticed that half the
water has boiled away. Neglecting heat losses to surrounding, calculate the specific latent
heat of vapourization of water.

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answer and explanation;

composition refers to both the types of minerals within a rock and the overall chemical makeup of the rock while texture refers to the size and arrangement of the minerals or grains that make up a rock. both composition and texture can be used to classify rocks, such as igneous rocks. texture describes how the rock became solid or crystallized from liquid, melted rock. composition of a rock describes the minerals that make up a particular rock.

Iwould say i also took the quiz but it didn't show me if i got it correct or not.