Sola

for my homework i have to explain why there are the same amount of particles in the beginning and at the end of heating iron and sulphur, i don' know how to. can you help me, quick?

M is partly constant and partly varies as n square when n=2,m=17 and when n=2,m=53 find (a)the equation conneting m and n (b)n when m=32

Suppose the growth curve of catfish in Oxford is given by: f(x)=0.5e^0.2t, where y= length, t= time (in week). Determine the length at 4 weeks.

In X is indirect variation in with the square of Y and when X is 4,Y is 3,what is the value of X when Y is 6?

R²=400 +100 - 400cos120 =500+200 √700 R=26.5N

Pls i want a full explaination