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3 years ago

Grunge is a rock style from Detroit. True False

Chemistry

1 answer:

Andre45 [30]3 years ago

3 0

Answer:

FALSE

Explanation:

Grunge refers to the genre of rock music and the fashion inspired by it. It originated in the mid-1980s in Seattle, Washington State.

Grunge was described as the fusion of punk rock and heavy metal.

This genre of music became popular in the early mid-1990s and included lyrics based on the theme of emotional and social alienation, betrayal, abuse, trauma etc.

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Why do health care professionals limit the number of radiation treatments that a person can be given

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Radiation is s very powerful substance and can cause major health problems do the health care professionals limit the use to help not create sickness

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4 years ago

A solution containing a mixture of lactic acid and lactate was found to have a pH of 4.26. Calculate the ratio of the lactate co

Aleks04 [339]

Given :

pH of solution of mixture of lactic acid and lactate is 4.26 .

To Find : $log( \dfrac{[ \text{Conc. of lactate}]}{[\text{Conc . of lactic acid }]}) = 0.4$

The ratio of the lactate concentration to the lactate .

Solution :

We know , pKa of lactic acid is :

pKa = 3.86 .

Now , the solution of lactic acid and lactate is a buffer solution .

So , pHof buffer acid is given by :

$pH=pKa+log(\dfrac{[Salt]}{[Acid]})$

Putting all given values :

$log( \dfrac{[ \text{Conc. of lactate}]}{[\text{Conc . of lactic acid }]}) = 0.4$

Taking anti log both the sides , we get :

$\dfrac{[ \text{Conc. of lactate}]}{[\text{Conc . of lactic acid }]} = 2.51$

Therefore , the ratio of the lactate concentration to the lactate is 2.51 .

Hence , this is the required solution .

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3 years ago

In an atomic model that includes a nucleus, negative charge is

Kruka [31]

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3 years ago

What is the molar solubility of aucl3 (ksp = 3. 2 x 10-23) in a 0. 013 m solution of magnesium chloride (a soluble salt)?

Inessa [10]

The molar solubility of AuCl₃ in a 0.013 M solution of magnesium chloride is 1.81×10⁻²⁸M.

The solubility product constant, Ksp, is the equilibrium constant for a solid substance dissolving in an aqueous solution. And for the AuCl₃, Ksp will be written as: Ksp = [Au³⁺][Cl⁻]³

Let the solubility of the AuCl₃ in 0.013M solution of magnesium chloride is x, of Au³⁺ is x and of Cl⁻ is 3x. But we know that MgCl₂ is a strong electrolyte and it completely dissociates into its ions and will produce 2 moles of chloride ions. For this solution let we consider the volume is 1 liter then the concentration of chloride ions in MgCl₂ is 2(0.013)=0.026M.

So, in MgCl₂ solution concentration of Cl⁻ becomes = 3x + 0.026.

Value of Ksp for AuCl₃ = 3.2 × 10⁻²³

On putting all values on the Ksp equation, we get

Ksp = (x)(3x + 0.026)³

Value of 3x is negligible as compared to the 0.026, so the equation becomes

3.2 × 10⁻²³ = (x)(0.026)³

x = 3.2×10⁻²³ / (0.026)³

x = 1.81×10⁻²⁸M

Hence the molar solubility of AuCl₃ in 0.010M MgCl₂ is 1.81×10⁻²⁸M.

To know more about molar solubility, visit the below link:

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3 years ago

Which of the following is an endothermic reaction?

olga2289 [7]

I think is b.an explosion hope it works

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3 years ago

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