Well, an alpha particle is made up of four subatomic particles: two protons, and two neutrons. Helium has two protons and two neutrons, meaning that alpha particles are, in fact, similar to helium nuclei. That's why they are written as 2^4 He
<span>1. The evolution of energy
2. the production of a gas
3. the formation of a precipitate
4. color change
</span>
Answer:
Total no. of atoms in 0.25 moles of H2 are 3.01 × 10^23.
Explanation:
The mass of unreacted zinc = 13 g
<h3>Further explanation
</h3>
The reaction equation is the chemical formula of reactants and products
A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reactants and products
Reaction
mol ratio Zn : HCl = 1 : 2