A balloon with a volume of 1*10^6L filled with Helium ascends to 10km at a pressure of 243mm Hg and a temperature of -33 degrees C, what will the new volume be?

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

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )