An ideal gas has an initial pressure of 851.2 mmHg, the pressure of the gas is decreased to 813.2 mmHg. This causes the
temperature of the gas to become 76 °C. What was the initial temperature of the gas in degrees Celsius?

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.

personal, she chose to do it.

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

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.