An element has two naturally-occurring isotopes. The mass numbers of these isotopes are 113 amu and 115 amu, with natural abundances of 5% and 95%, respectively. Calculate its average atomic mass. Report your answer to 1 decimal place.

Its average atomic mass is 114.9 amu

Explanation:

Mass of isotope 1 = 113 amu

% abundance of isotope 1 = 5% =

Mass of isotope 2 = 115 amu

% abundance of isotope 2 = 95% =

Formula used for average atomic mass of an element :

Thus its average atomic mass is 114.9 amu

the answer is a and have a great day

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.