To find the mass of Ca(NO3)2 you would add up ___ Calcium, ___ Nitrogens, and ___ Oxygens.

The answer for the following answer is mentioned below.

Therefore the mass of calcium nitrate (

Explanation:

To find the mass of calcium nitrate ( ) is :

No of calcium are 1

No of nitrogen are 2

No of  oxygen are 6

=

So therefore;

No of nitrogen are 2

No of  oxygen are 6

Mass of  ( ) :

molecular mass of calcium =40

molecular mass of nitrogen = 14

molecular mass of oxygen = 16

 = (14×2) + (16×6)

           = 28 + 96

           = 124

 = 40 + 124

 = 164 grams

Therefore the mass of calcium nitrate ( ) is 164 grams

The answer for this question is d. none of these

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.