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2 years ago

15

Elements and compounds are usually more dense in their solid than in their

1 answer:

sladkih [1.3K]2 years ago

8 0

Explanation:

The molecules in water is more tightly packed than in ice, so water has greater density than ice.

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Which statement best explains the net transfer of energy that is about to

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Answer:

Explanation:

B I got it right

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2 years ago

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Given that hclo4 is a strong acid, how would you classify the basicity of clo−4?

Mandarinka [93]

As a conjugate base of a strong acid,ClO4-would be classified as having a negligible basicity. The basicity of a chemical species is normally expressed by the acidity of the conjugate acid. The basicity of an acid is the number of hydrogen ions, which can be produced by one molecule of the acid.

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3 years ago

Sidana [21]

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which of the following compounds would be considered an electrolyte? a. c6h12o6 b. naoh c. co2 d. agcl

AlekseyPX

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9 months ago

The rate constants of some reactions double with every 10-degree rise in temperature. Assume that a reaction takes place at 295

LUCKY_DIMON [66]

Answer : The activation energy for the reaction is, 51.9 kJ

Explanation :

According to the Arrhenius equation,

$K=A\times e^{\frac{-Ea}{RT}}$

or,

$\log (\frac{K_2}{K_1})=\frac{Ea}{2.303\times R}[\frac{1}{T_1}-\frac{1}{T_2}]$

where,

$K_1$ = rate constant at 295 K

$K_2$ = rate constant at 305 K = $2K_1$

Ea = activation energy for the reaction = ?

R = gas constant = 8.314 J/mole.K

$T_1$ = initial temperature = 295 K

$T_2$ = final temperature = 305 K

Now put all the given values in this formula, we get:

$\log (\frac{2K_1}{K_1})=\frac{Ea}{2.303\times 8.314J/mole.K}[\frac{1}{295K}-\frac{1}{305K}]$

$Ea=51879.96J=51.9kJ$

Therefore, the activation energy for the reaction is, 51.9 kJ

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3 years ago