The letter Ne with eight dots. Because it is a Noble Gas, it has eight valence electrons.
When 2.50 g is burned then in oxygen then 1.25kj of heat is produced.
Steam because steam comes from water which the energy makes it into steam
Answer:
There is more space between gas particles than the size of the particles.
Explanation:
This scenario can be understand by taking a very simple example. As we know that 1 mole of any gas at standard temperature and pressure occupy 22.4 liters of volume. Lets take Hydrogen gas and Oxygen gas, 1 mole of each gas will occupy same volume. Why it is so? Why same volume although Oxygen is 16 times more heavier? This is because the space between gas molecules is very large. Approximately the distance between gas molecules is 300 times greater than their own diameter from its neighbor molecules.
Your answer would be 0.024951344877489 but rounding it would be 0.025 moles