The boys carried out a third set of experiments, using 20cm of water instead of 10 cm'. Could they use these results to add to the first two sets, to
calculate an average temperature change? Explain your answer.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

it is b that is the answer.