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3 years ago

Consider the chemical equation below.

Chemistry

2 answers:

irina1246 [14]3 years ago

8 0

Answer is: A. H⁺ + OH⁻ → H₂O.

Balanced chemical reaction:

Mg(OH)₂ + 2HNO₃ → Mg(NO₃)₂ + 2H₂O.

Ionic reaction:

Mg²⁺ + 2OH⁻ + 2H⁺ + 2NO₃⁻ → Mg²⁺ + 2NO₃⁻ + 2H₂O.

Cancel all species that appear on both sides of the equation to get net ionic reaction.

Net ionic reaction: 2OH⁻ + 2H⁺ → 2H₂O or OH⁻ + H⁺ → H₂O;

Aleks [24]3 years ago

6 0

I would say A but then again im not too sure so hope that makes it easier to somehow

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The following models represent three different mixtures of the same solid in water,

velikii [3]

Answer:

Explanation:

bcuz the water in it is little

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3 years ago

Why do you Think you weight less on Uranus than earth even though it is more massive planet ?

Phantasy [73]

Answer:

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Explanation:

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3 years ago

Consider this reaction:

Brilliant_brown [7]

Answer : The oxidation state of Mg in Mg(s) is (0).

Explanation :

Oxidation number or oxidation state : It represent the number of electrons lost or gained by the atoms of an element in a compound.

Oxidation numbers are generally written with the sign (+) and (-) first and then the magnitude.

Rules for Oxidation Numbers are :

The oxidation number of a free element is always zero.

The oxidation number of a monatomic ion equals the charge of the ion.

The oxidation number of Hydrogen (H) is +1, but it is -1 in when combined with less electronegative elements.

The oxidation number of oxygen (O) in compounds is usually -2.

The oxidation number of a Group 17 element in a binary compound is -1.

The sum of the oxidation numbers of all of the atoms in a neutral compound is zero.

The sum of the oxidation numbers in a polyatomic ion is equal to the charge of the ion.

The given chemical reaction is:

$Mg(s)+2H_2O(l)\rightarrow Mg(OH)_2(s)+H_2(g)$

In the given reaction, the oxidation state of Mg in Mg(s) is (0) because it is a free element and the oxidation state of Mg in $Mg(OH)_2$ is (+2).

Hence, the oxidation state of Mg in Mg(s) is (0).

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3 years ago

Choose the substance with the highest surface tension.

umka2103 [35]

Answer:

Hello

you're answer should be E.HOCH2CH2OH

hope this answer is correct

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1. Determine if the ionic substances can break apart into ions.
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2. Swap the partners for all the other ions that you can get from step 1. You can skip pairings with the same charge - a + can't get close to another + to react.
3. Use solubility, acid/base, and redox rules to see if anything will happen with the ions in solution.<span />

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3 years ago