need help in getting a element superhero and the element i choose is Helium can you give me some ideas of a superhero to make using helium as the element?

Decomposition reaction /cracking reactions

ionic compounds are held together by ionic bonds are formed by the transfer of electrons from a metal to a non metal

Ionic bond is formed by the electrostatic attraction between the oppositely charged ions.

metals give out electrons and becomes positively charged. positively charged ions are called cations. so these are called metal cations

the electrons given out are taken in by non metals and become negatively charged. negatively charged ions are called anions. then they are called non metal anions.

so ionic compounds are formed by the electrostatic attraction between metal cations and non metal anions.

therefore ionic compounds are composed of a metal cation and a nonmetal anion

Final answer:

The volume occupied by 454 grams of copper, given a density of 8.92g/mL, can be calculated using the formula for density (Density = Mass / Volume). When rearranged to find volume (Volume = Mass / Density) and substituting the given values, the volume occupied is approximately 50.9 mL.

Explanation:

When calculating volume in chemistry, we use the formula for density, which is: Density = Mass / Volume. In this case, the given values are mass (454g) and density (8.92g/mL). If we rearrange the formula to solve the volume, we get: Volume = Mass / Density. So, if we substitute the given values into the equation, we obtain: Volume = 454g / 8.92g/mL. In performing the operation, we get approximately 50.9 mL. Hence 454 grams of copper occupy 50.9 mL of volume.

Learn more about Calculating Volume here:

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Answer:the correct options are A (H⁺(aq)) and E (Mg₃(PO₄)₂(s)).

Explanation:To determine which substances are present in the net ionic equation for the reaction between MgCl2(aq) and H3PO4(aq), we first need to write the balanced molecular equation and then separate it into ions to identify the spectator ions. Spectator ions are those ions that do not participate in the chemical reaction and remain unchanged.

First, let's write the balanced molecular equation:

MgCl2(aq) + 2H3PO4(aq) -> Mg3(PO4)2(s) + 6HCl(aq)

Now, let's break down the equation into ions:

Mg²⁺(aq) + 2Cl⁻(aq) + 2H₃PO₄(aq) -> Mg₃(PO₄)₂(s) + 6H⁺(aq) + 6Cl⁻(aq)

Now, let's identify the spectator ions, which are the ions that appear on both sides of the equation and do not change:

- Mg²⁺(aq) is present on both sides.

- Cl⁻(aq) is present on both sides.

So, the spectator ions are Mg²⁺(aq) and Cl⁻(aq).

Now, let's determine the substances that are part of the net ionic equation, excluding the spectator ions:

Net Ionic Equation: 2H₃PO₄(aq) -> Mg₃(PO₄)₂(s) + 6H⁺(aq)

From the net ionic equation, the following substances are present:

A. H⁺(aq)

E. Mg₃(PO₄)₂(s)

So, the correct options are A (H⁺(aq)) and E (Mg₃(PO₄)₂(s)).

The other ions and compounds do not participate directly in the net ionic reaction and are spectator ions.

Answer:

The correct answer is .

Explanation:

Given polyatomic ions:

1) Sulfate =

2) Phosphate =

3) Hydroxide =

The formula of Sodium sulfate will be:

Sodium carries 1+ charge and and sulfate ion carries 2-charge. In order to neutralize negative charge on sulfate ion two sodium ions will be needed.