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Eddi Din [679]
2 years ago
4

A student is using a copper strip and a strong chlorine solution in her experiment. Which of these is a chemical property of one

of her materials? density of the copper strip reactivity of the copper strip odor of the chlorine solution color of the chlorine solution
Chemistry
2 answers:
Sav [38]2 years ago
6 0

Answer: reactivity of the copper strip

Explanation: A physical property is defined as the property which measures change in shape and  size.No new substance gets formed in a physical change.

Example: Density of copper strip, Odor of chlorine solution and color of the chlorine solution.

A chemical property is defined as the property which measures change in chemical composition. A new substance is formed in chemical reaction.

Example: reactivity of substance

Serga [27]2 years ago
3 0

Answer:

Reactivity of the copper strip

Explanation:

The matter properties can be classified as chemical property or physical property. The first refers to the properties that, when analyzed, change the composition of the matter, it means that a chemical property is a capacity of a substance to transform in other, such as the combustibility (the property to react with a comburent to form carbonic gas), the oxidation, and in general the reactivity.

The physical properties are the ones that are possible to be analyzed without changing the composition of a substance, such as the color, the density, the odor, and the pH.

So, the density of the copper strip, odor of the chlorine solution, and color of the chlorine solution are physical properties, and the reactivity of the copper strip is a chemical property.

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Match each term to a correct example from the chemical equation: 2A + B2 → 2AB.
kari74 [83]

Explanation:

The given equation is as follows.

       2A + B_{2} \rightarrow 2AB

Reactants are the species present on the left hand side of a chemical equation.

Products are the species present on the right hand side of a chemical equation.

Whereas coefficients are the number present in front of formulas.

Therefore, in the given reaction equation, matched terms are as follows.

  • Reactant is B_{2}
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2 years ago
What is the IUPAC name of the following compound?
pentagon [3]

Answer:

(d) 3,7-dimethyl-4-nonyne.

Explanation:

Hello,

In this case, considering the attached picture on which you can see that the main chain has nine carbon atoms, one tripe bond at the fourth carbon and two methyl radicals at the third and seventh carbons respectively, by following the IUPAC rules, the name would be: (d) 3,7-dimethyl-4-nonyne since the chain must start at the side closest to the first triple bond due to its priority and subsequently considering the present radicals.

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A student runs an experiment in the lab and then uses the data to prepare an Arrhenius plot of the natural log of the rate const
Thepotemich [5.8K]

Answer:

21.86582KJ

Explanation:

The graphical form of the Arrhenius equation is shown on the image attached. Remember that in the Arrhenius equation, we plot the rate constant against the inverse of temperature. The slope of this graph is the activation energy and its y intercept is the frequency factor.

Applying the equation if a straight line, y=mx +c, and comparing the given equation with the graphical form of the Arrhenius equation shown in the image attached, we obtain the activation energy of the reaction as shown.

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MAVERICK [17]
AgI has a higher melting point than vanillin because it is an ionic compound. The bonds are held more tightly together than in vanillin because it is a covalent compound. Ionic bonds have a higher melting point because the electrons are being transferred from one atom to the other.
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