Sublimation is when a solid turns directly into a gas, completely bypassing the liquid phase. Dry ice is a good example.
Answer: Cations are positively charged ions.
Explanation: In cations the number of electrons is not equal to the number of positively charged protons. This is due to reason that cations donates their outer valence electrons making the atom less electronegative. The amount of electrons donated indicates the charge of the cation.
The dry ice absorbs heat from the air in the flask and become CO2 gas directly. So the heat flow from air to dry ice. And the CO2 gas increase the amount of the air. Though the temperature decreases, the balloon still inflates.
You can form 9.20 L of NH₃ gas at 93.0 °C and 37.3 kPa or 2.56 L at STP. The balanced chemical equation is N₂ + 3H₂ → 2NH₃ Since all substances are gases, we can use litres instead of moles in our calculations. You don't specify the pressure and temperature of the NH₃, so I will calculate its volume in two ways.
A kilometer is equal to 1000 meters and a meter is equal to 100 centimeters, so:
1 km = 100000 cm
1 cm = 0,00001 km
Just multiply or divide it by 100000.
