You find the number of protons in an atom by looking at the periodic table.
1) Find your element.
2) Locate The atomic number of your element
3) The Atomic Number is also the number of protons.
Usually, the atomic number is on the on the top of the atomic symbol.
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The reaction is;
2Na + 2H2O → 2NaOH + H2
Answer:
4.4 × 10^(23) atoms
Explanation:
The reaction is;
2Na + 2H2O → 2NaOH + H2
2 moles of Na produces 1 mole of H2 from the equation reaction.
Thus, since 8.2 L of hydrogen gas at STP are produced. And we know that at STP, 1 mole of a gas will have a volume of 22.4 L, and also, We know according to avogadro's number that, 1 mol = 6.02 × 10^(23) atoms, Thus;
8.2 L of H2 × (1 mole of H2/22.4 L) × (2 mole of Na/1 mole of H2) × (6.02 × 10^(23) atoms/1 mole of Na) = 4.4 × 10^(23) atoms
Answer:
see explanation
Explanation:
To determine limiting reactant divide mole quantities of reactants by the respective coefficient in the balanced equation. The smaller value is the limiting reactant.
P₄ + 5O₂ => 2P₂O₅
12/1 = 12 15/5 = 3
O₂ is the limiting reactant. P₄ will be in excess when rxn stops.
Answer:
<em>Atoms that most likely undergo fusion:</em>
- <u><em>Hydrogen-3,</em></u>
- <u><em>Hydrogen-1,</em></u>
- <u><em>Helium-3,</em></u>
<em>Atoms that most likely undergo fission:</em>
Explanation:
Both <em>fusion</em> and <em>fission</em> are nuclear reactions.
<em>Fusion</em> is the combination (union) of two nuclei into one larger nuclei, with the release of a very large energy and other subatomic particles.
<em>Fission </em>it the split of an atom (its nucleus) into two ore more smaller atoms, again with the release of huge amounts of energy and some subatomic particles.
The heavier atoms are unstable: they tend to split (fission) into smaller atoms to form more stable atoms. In the list of choices, uranium-233 (mass number 233), plutonium-239 (mass number 239), and plutonium-241 (mass number 241) are heavy isotopes and so they most likely <em>undergo fission</em>.
Only small, lighter atoms can combine their nuclei to form a larger, heavier nucleus. In the list of choices, only hydrogen-3 (mass number 3), hydrogen-1 (mass number 1), and helium-3 (mass number 3) are light enough to predict that they are the most likely to <em>undergo fusion.</em>
