Three samples, each of a different substance, are weighed and their volume is measured. the results are tabulated. list the substances in order of decreasing density. mass volume substance i 12.0 g 10.0 ml substance ii 10.0 kg 10.0 l substance iii 10.0 mg 12.0 μl

                                 Substance i > Substance ii > Substance iii

Data Given;

                   Density  =  ?

                   Mass  =  12 g  

                   Volume  =  10 mL

Formula Used;

                   Density  =  Mass ÷ Volume

Putting Values,

                   Density  =  12 g ÷ 10 mL

                   Density  =  1.2 g.mL⁻¹

Data Given;

                   Density  =  ?

                   Mass  =  10 Kg  =  10000 g

                   Volume  =  10 L  =  10000 mL

Formula Used;

                   Density  =  Mass ÷ Volume

Putting Values,

                   Density  =  10000 g ÷ 10000 mL

                   Density  =  1 g.mL⁻¹

Data Given;

                   Density  =  ?

                   Mass  =  10 mg  =  0.01 g

                   Volume  =  12.0 μl  =  0.012 mL

Formula Used;

                   Density  =  Mass ÷ Volume

Putting Values,

                   Density  =  0.01 g ÷ 0.012 mL

                   Density  =  0.833 g.mL⁻¹

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.