The particle size is important because the more finely divided the solid is , the faster the reaction happen. A powdered solid will normally produce a faster reaction because it has greater surface area than the single lump
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A. they arose out of Africa less than 200,00 years ago
B definitely because d is just dumb, c is not possible, a is not even true so b
Answer:
kilogram - measurement of mass
Explanation:
That's the correct answer
Kelvin for measurement of heat
Ampere for measurement of the power of electricity
