Question

the half-life of radium-226 is about 1,590 years. How much of a 100mg sample will be left in 500 years

Answer 1

Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz

I know the best answer ever (*says sarcastically*)