Answer:
9.79740949850 moles
Explanation:
- 1 mole = Avogardo's Number <<6.022 E 23 <<particles, atoms, etc.>>
- This problem can be solved using dimensional analysis by multiplying atoms (5.9E24 atoms) by (1) mole and then dividing the number by Avogardo's number (6.022 E 23 atoms).
- Note: E = * 10
Side Note: Please let me know if you need any clarifications about this!
Looking at the molecular formula of Cr₂O₃, we know that oxygen has an oxidation state of -2, and three oxygen atoms means they are providing a total charge of -6 to the species. Since the compound is charge-neutral overall, the two chromium atoms must have a total charge of +6 to balance the -6; therefore, each chromium atom must have a charge of +3. This means that the chromium atoms in this molecule are Cr³⁺. To name this compound we will refer to the metal as chromium(III), to give a full name of chromium(III) oxide.
Since chromium can have multiple oxidation states, such as Cr²⁺ or Cr⁴⁺, it is a Type II ion.
Explanation:
It is known that entropy is the measure of degree of randomness present in a substance due to the movement of its molecules.
More randomly the atoms are moving from one place to another more will be the entropy of system.
In order to calculate the entropy, we divide the amount of heat transferred by the temperature at which heat transfer occurs.
As the given temperature is 296.95 K and heat of vaporization is 24.8 kJ/mol. Therefore, calculate the molar entropy of vaporization as follows.
Molar entropy of vaporization =
= 0.08351 kJ/mol K
Thus, we can conclude that molar entropy of vaporization of is 0.08351 kJ/mol K.
Long answer- 6.79166666667
Short answer- 6.791
I think that is the short answer, if not I apologize. Have a wonderful day! :)
Answer: numbers of neutrons
Explanation: Isotopes are different versions of a particular element or different versions of a certain kind of atom.
Protons and electrons determine an atomic element's chemical characteristics. The neutrons are a different matter. They have no charge, but do have almost the same mass as a proton. Different isotopes of an atomic element contain different numbers of neutrons.