A radioactive element is one that is:
a. stable
b. not stable
c. found in all living organisms
d. both b & c

i can ! i just need to know what the paragraph is! : p

the answer is na (sodium)

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.