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Rzqust [24]
3 years ago
5

What is concentration​

Chemistry
1 answer:
Arlecino [84]3 years ago
6 0

Answer:

Chemistry definition: Concentration Definition. In chemistry, concentration refers to the amount of a substance per defined space. Another definition is that concentration is the ratio of solute in a solution to either solvent or total solution. Concentration usually is expressed in terms of mass per unit volume.

Dictionary Definition: the action or power of focusing one's attention or mental effort

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Which of these statements best describes physical properties?
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The correct answer would be D: Physical properties can be observed without changing the identity of a substance

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You are given the reaction Cu + HNO3 → Cu(NO3)2 + NO + H2O. Half-reactions: First: 3 upper C u right arrow 3 upper C u superscri
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3 years ago
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Which statement is true about the relationship between entropy and spontaneity? O Spontaneous reactions tend to lead to higher e
dimulka [17.4K]

Answer:

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Explanation:

The spontaneity of a reaction is linked to the value of Gibbs free energy (ΔG°). The more negative is this value, the more spontaneous is a reaction. At the same time, Gibbs free energy depends on enthalpy (ΔH°) and entropy (ΔS°), according to the following expression:

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3 0
3 years ago
A sample of metal has a mass of 21.35 g, and a volume of 6.28 mL. What is the density of this metal?
Scilla [17]

Answer:

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