A metal ball has a mass of 2 g and a volume of 6 cm3. What is the density?

The Density is: 2Kg/6m^3=1/3 kg/m^3

Explanation:

Density=Mass/Volume

I hope this helps!

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

the answer to your question is c.

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