(12 divided by 3) 2 – (18 divided by 3 2)) < (4 divided by 2)

answer; (d) spontaneous processes are characterized by the overall conversion of order to disorder;

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

it was given as a lesson and guide for prayer.

snell's law

refractve index = sin incidence / sin refraction