Answer:
copper
Explanation:
The density of copper is 8.96 g/cm³ and the density of zinc is 7.13 g/cm³.
density= mass/volume
⇒mass = density×volume
For copper,
mass = 8.96 g/cm³ × 1 cm³
mass = 8.96 grams
For zinc,
mass = 7.13 g/cm³ × 1 cm³
mass = 7.13 grams
It is clear that, the mass of copper is more.
Here we have to choose the specific iron ion preset in the compound FeO among the given ions.
The iron ion present in FeO is iron (II) ion.
The compound FeO is a neutral compound. Where the anion is oxide ion (O²⁻) thus the cation should also contain two unit positive charge. Thus Fe²⁺. Hence , the iron ion is Fe (II) ion.
The ferride ion means Fe²⁻ ion which cannot be present in FeO as the anion is already present which is O²⁻.
The iron (I) ion means iron present in +1 state, then to neutralize the compound 2 iron (I) is needed but in compound FeO there is only one iron present. Thus it cannot be iron (I) ion.
The ferride (I) ion means Fe¹⁻, which cannot be the state of the iron in FeO as there already present an anion which is O²⁻ ion.
Answer:
A the answer is A I'm sure
<u>Answer and explanation:</u>
We know that magnesium and hydrochloric acid are to react with each other so the chemical equation for this reaction will be:
![2Mg + 2HCl = 2MgCl + H_2](https://tex.z-dn.net/?f=2Mg%20%2B%202HCl%20%3D%202MgCl%20%2B%20H_2)
Here in this reaction, the mole ratio of the reactants used is 1:1 that means we need equal amounts of magnesium as well as hydrochloric acid to have a complete reaction.
Therefore, the mass would be same since according to the law of conservation of mass, energy can neither be created nor destroyed but can only be changed.
The liquid would evaporate