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3 years ago

Which substances will make a salt when combined?

Chemistry

2 answers:

Katen [24]3 years ago

7 0

Vinegar and antacids

Tatiana [17]3 years ago

4 0

Answer:

The correct answer is vinegar and antacids.

Explanation:

An antacid is a substance, usually a base, that acts against acidity in an acid-base reaction.

The antacid alkalinizes the acid medium, increasing the pH. In this case, the vinegar has an acid pH, so the antacid would react with it by raising its pH, producing salts as a product of the reaction.

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The standard free-energy changes for the reactions below are given.Phosphocreatine → creatine + Pi ∆ G'° = –43.0 kJ/molATP → ADP

Anton [14]

Answer:

Gibbs free-energy of the reaction = (–12.5 kJ/mol)

Explanation:

The Gibbs free-energy of a reaction predicts the spontaneity or feasibility of a given chemical reaction.

Given the standard Gibbs free energy changes:

Phosphocreatine → creatine + Pi, ∆G° = –43.0 kJ/mol ...(1)

ATP → ADP + Pi , ∆G° = –30.5 kJ/mol ....(2)

Now to calculate the Gibbs free-energy of the given chemical reaction: Phosphocreatine + ADP → creatine + ATP; the equation (2) is reversed to give:

ADP + Pi → ATP, ∆G° = + 30.5 kJ/mol ...(3)

Now the equation (3) and (1) are added, to give:

Phosphocreatine + ADP + Pi→ creatine + ATP + Pi

⇒ Phosphocreatine + ADP → creatine + ATP

Therefore, to calculate the Gibbs free-energy of the reaction, the standard Gibbs free energy changes of the equations (1) and (3) are added similarly:

Gibbs free-energy of the reaction: ∆G° = (–43.0 kJ/mol) + ( + 30.5 kJ/mol) = (–12.5 kJ/mol)

Therefore, the Gibbs free-energy of the reaction = (–12.5 kJ/mol)

7 0

3 years ago

Using the periodic table, complete the following.

vladimir1956 [14]

Molecular weight= 1.00784 u
mass of one mole = 1.008 grams

4 0

3 years ago

Water has a density of 1.0 g/mL. Which of these objects will float in water

Firdavs [7]

Answer:where did you get this

Explanation:

3 0

3 years ago

During a qualitative analysis, a student is looking for the presence of carbonate ions CO3(2-) in various solid samples. which o

Mama L [17]

The correct answer is (B) Adding a dilute solution of HCl

EXPLANATION

The presence of carbonate ions can be tested by adding a dilute acid to the solution. The acid displaces Carbon (IV) oxide from the solution. Using HCl, and a carbonate of metal X.

XCO₃₍s₎ + 2HCl₍aq₎⇒ XCl₂₍aq₎+ H₂O₍l₎ + CO₂₍g₎

The gas produced is tested using calcium hydroxide to confirm whether it is carbon (IV) oxide.

4 0

3 years ago

When does the composition of a substance does not change?

blagie [28]

I think when it does not react with anything I think

4 0

3 years ago