I 14 a) Write the formula unit of calcium
fluoride.
b) A certain mass (m) of calcium fluoride
contains 1.2x10(23) anions.
Deduce the mass (m).
Given : N. = 6x10“ mol

Iam not going to tell you

Idon't know hope someone you

Answer: temperature? i hope this and have a wonderful

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.