<h2>Answer: 1.084 × 10²³ molecules
</h2>
Explanation:
# of molecules = Moles × Avogadro's Number
= (0.180 mol) × (6.022 × 10²³ molecules/mol)
= 1.084 × 10²³ molecules
<h3>∴ 0.180 mol of sulfur dioxide ≡ 1.084 × 10²³ molecules
</h3>
Answer:
D) energy required to remove a valence electron
Explanation:
Ionization energy can be defined as the atom's ability to and the energy required to remove a valence electron. Ionization energy increases up a group and to the right along a period. So helium has the highest first Ionization energy meaning that it is very hard to remove an electron from helium because octet is already complete.
Answer:
1, 2, 3
Explanation:
Using a simple chemical reaction as an example;
2H2 + O2 --> 2H2O
1) number of atoms
In the reactant side (left side of the reaction), there are 4 Hydrogen atoms which is equal with the number of atoms in the product (right side of the reaction). In the reactant side, there are 2 oxygen atoms, same thing with the product side. This means it is conserved.
2) Number of electrons
The number of electrons are also balanced. Although there is sharing of electrons, This means it is conserved.
3) In a chemical reaction, the law of conservation of matter is obeyed. Since the number of atoms is conserved, the mass is also conserved.
4) numbers of molecules
Although this is true for some reactions, it is not always the case as seen in the reaction above. This means it is not conserved.
Answer:
Velocity
Explanation:
Velocity means "rapidity of motion or operation, swiftness of speed"