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3 years ago

9

When the equilibrium reaction, in which bromophenol blue dissociates to form its weak base and a tion, goes forward, it turns th

e solution from yellow to blue H^ + What did you observe when you added additional amounts of each of the

1 answer:

azamat3 years ago

8 0

Yes you can do that whenever you want to

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Question 10(Multiple Choice Worth 5 points)

jarptica [38.1K]

Answer:

O Generation of electricity

Explanation:

because the others dont make sense to me and tbh carbon is used everyway and everywhere

7 0

2 years ago

Which of the following is an oxidation-reduction reaction? Which of the following is an oxidation-reduction reaction? Ba(C2H3O2)

DochEvi [55]

Answer:

The only oxidation- reduction reaction is <u>Cu (s) + 2AgNO3 (aq) → 2Ag (s) + Cu(NO3)2</u>

Explanation:

An oxidation-reduction reaction is a chemical reaction that involves an electron transfer between two species. This will lead to a change in oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

Some atoms have different possible oxidation numbers.

H has oxidation number +1

O has oxidation number -2

The oxidation number of an individual atom is 0.

The total oxidation number of all atoms in: a neutral species is 0 and in an ion is equal to the ion charge.

⇒ Ba(C2H3O2)2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaC2H3O2

(C2H3O2)2 has an oxidation number of -2. So Ba has an oxidation number of +2

In BaSO4 has SO4 an oxidation number of -2 and Ba has an oxidation number of +2

This means <u>Ba doesn't change its oxidation number.</u>

In Na2SO4 Na has an oxidation of +1; in NaC2H3O2 Na has an oxidation of +1

This means <u>Na doesn't change its oxidation number. </u>

<u />

<u>⇒ Cu (s) + 2AgNO3 (aq) → 2Ag (s) + Cu(NO3)2</u>

Cu has an oxidation number of 0

In Cu(NO3)2, NO3 has an oxidation number of -1 so Cu has an oxidation number of +2

In 2AgNO3, NO3 has an oxidation number of -1 so Ag has an oxidation number of +1

Ag has an oxidation number of 0

⇒ HCl (aq) + NaOH (aq) → H2O (l) + NaCl

The oxidation number of Cl and Na do not change

⇒ AgNO3 (aq) + HCl (aq) → AgCl (s) + HNO3

In AgNO3 Ag has an oxidation number of +1

In AgCl Ag has an oxidation number of +1

In HCl Cl has an oxidation number of -1

In AgCl Cl has an oxidation number of +1

The oxidation number of Cl and Ag do not change

⇒ H2CO3 (aq) + Ca(NO3)2 (aq) → 2HNO3 (aq) + CaCO3 (s)

In Ca(NO3)2 Ca has an oxidation number of +2

In CaCO3 Ca has an oxidation number of +2

In Ca(NO3)2 N has an oxidation number of +5

In HNO3 N has an oxidation number of +5

In H2CO3 C has an oxidation number of +4

In CaCO3 C has an oxidation number of +4

The only oxidation- reduction reaction is <u>Cu (s) + 2AgNO3 (aq) → 2Ag (s) + Cu(NO3)2</u>

<u />

Oxidizing agent: Ag ; Reducing agent: Cu

4 0

3 years ago

Can y’all help me with this pls. Your Have to do the claim evidence and reasoning

Kruka [31]

I'm not sure how to write this but the size shrinking could be due to erosion

8 0

3 years ago

Question 2 of 10

Xelga [282]

The equation MgO + 2HCl → MgCl₂ + H₂O is a balanced equation.

A balanced chemical equation contains equal number of atoms on both sides of the equation.

The equation is MgO + 2HCl → MgCl₂ + H₂O which contains 1 atom of Mg, 2 atoms of chlorine, 2 atoms of chlorine, 1 atom of oxygen on both reactants and products sides.
So the equation is balanced.
An equation for a chemical reaction is said to be balanced if both the reactants and the products have the same number of atoms and total charge for each component of the reaction.
In other words, both sides of the reaction have equal amounts of mass and charge.
It follows law of conservation of mass.
Mass is neither created nor destroyed rather it can be transferred from one form to another.

Learn more about balanced equation at:

brainly.com/question/2829417

#SPJ9

4 0

1 year ago

When a trough of one wave overlaps the crest of another wave ____ spots are produced.

shtirl [24]

The answer is white spots are produced

4 0

2 years ago

Read 2 more answers