Rank the following quantities in order of decreasing mass.
1kg,1cg,100g,50cg,1dg,1gg,50 million ng

Order from  largest to smallest :

: 1 Gg > 1 kg> 100 g >50 cg > 1 dg > 50 million ng > 1 cg

Explanation:

g = grams

1) kg = kilo grams

1 kg = 1000 g

2)1 cg = 0.01 g

3) 100 g = 100 g

1 g = 1 g

4) 50 cg

1 cg = 0.01 g

50 cg = 0.5 g

5) 1 dg = 0.1 dg

6) 1 Gg = giga gram

1 Gg = 1,000,000 g

7) 50 million ng =

50 million ng =

Order from  largest to smallest :

:1,000,000 g > 1000 g > 100 g >0.5 g > 0.1 g > 0.05 g> 0.01 g

: 1 Gg > 1 kg> 100 g >50 cg > 1 dg > 50 million ng > 1 cg

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.