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4 years ago

A property is a characteristic that can be used to identify a substance. Properties can be or _.

Chemistry

2 answers:

earnstyle [38]4 years ago

4 0

Answer:

physical or chemical

Explanation:

A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance while a chemical property describes the ability of a substance to undergo a specific chemical change.

kirill [66]4 years ago

3 0

Answer:

a list of characteristics that can be used to identify a substance include color, odor, taste, density, melting point, boiling point, conductivity, and hardness.

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On average, Earth’s crust contains about 8.1% aluminum by mass. If a standard 12-ounce soft drink can contains approximately 15

MrMuchimi

Answer:

5400 cans

Explanation:

First we convert the total weight, 1 ton, to grams:

$1ton=1x10^{6}g$

Now we need to know the mass of aluminum:

$m_{Al}=\frac{10^{6}*8.1}{100} =81000g$

Now we make the relation between the mass of aluminum in 1 ton of the earth's crust and the mass of aluminum per can:

$n=\frac{81000g}{15g/can} =5400cans$

8 0

4 years ago

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

When 1 carbon atom combines with 2 oxygen atoms, the resulting substance is called a

PIT_PIT [208]

Answer:

Carbon Dioxide

Explanation:

Which is a compound:)

7 0

3 years ago

What is the maximum amount of electrons that can be in the third energy level of an atom? (question continued in comments)

Alex787 [66]

Answer:

18 electrons

Explanation:

If you search on Google you get the same answer, so the question gives you your answer.

6 0

4 years ago

Warm Ocean currents, like the Gulf Stream current, will create a warmer wetter climate like the one in Northeastern United State

OverLord2011 [107]

True is your answer

3 0

3 years ago

A property is a characteristic that can be used to identify a substance. Properties can be ______ or _______.

A property is a characteristic that can be used to identify a substance. Properties can be or _.