What are the spectator ions in 2H+ + SO42- + Ca2+ + 21 → CaSO4 + 2H+ + 21-?

A. S02- and Ca2+

B. Ht and I

C. H", S042; Ca2+, and 21

D. SO42", Ca2+, and CaSO4

B. H⁺ and I

Explanation:

Spectator ions are ions that appear in both the reactant and product of a chemical reaction. This ions remain unchanged on both sides of the chemical equation, they simply remain the same as the reaction occurs.

From the equation:

2H⁺ + SO₄²⁻ + Ca²⁺ + 2I⁻   ⇒   CaSO₄ + 2H⁺ + 2I⁻

you can see that H⁺ and I⁻ ions remain unchanged as the reaction occurs. This spectator ions can be removed to form a net ionic equation. Removing the spectator ions gives:

SO₄²⁻ + Ca²⁺    ⇒   CaSO₄

the molecules move in straight line until they collide with each other or with the walls of the container. collisions are perfectly elastic; when two molecules collide, they change their directions and kinetic energies, but the total kinetic energy is conserved.

explanation:

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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