How does a foam-filled winter coat keep a person warm?

a) it slows down the transfer of thermal energy from outside to inside the coat.
b) it slows down the transfer of thermal energy from inside to outside the coat.
c) it speeds up the transfer of thermal energy from outside to inside the coat.
d) it speeds up the transfer of thermal energy from inside to outside the coat.

1. list three scientific reasons cockroaches may fly.

What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m

The amount of iron in ore can be quantitatively determined by titrating a solution of the unknown with a standard solution of dichromate, cr2o72−. the net ionic equation is 6fe2+(aq)+cr2o72−(aq)+14h+(aq)→6fe3 +(aq)+2cr3+(aq)+7h2o(aq) part a the titration of 25.0 ml of an iron(ii) solution required 18.0 ml of a 0.230 m solution of dichromate to reach the equivalence point. what is the molarity of the iron(ii) solution?