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Natasha_Volkova [10]
3 years ago
11

Which characteristic is not a characteristic of plastic

Chemistry
1 answer:
nalin [4]3 years ago
6 0
I think it’s option B
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Yasmin's teacher asks her to make a supersaturated saline solution. Her teacher tells her that the solubility of the salt is 360
Aleks [24]

Answer:

She can add 380 g of salt to 1 L of hot water (75 °C) and stir until all the salt dissolves. Then, she can carefully cool the solution to room temperature.  

Explanation:

A supersaturated solution contains more salt than it can normally hold at a given temperature.

A saturated solution at 25 °C contains 360 g of salt per litre, and water at 70 °C can hold more salt.

Yasmin can dissolve 380 g of salt in 1 L of water at 70 °C. Then she can carefully cool the solution to 25 °C, and she will have a supersaturated solution.

B and D are wrong. The most salt that will dissolve at 25 °C is 360 g. She will have a saturated solution.

C is wrong. Only 356 g of salt will dissolve at 5 °C, so that's what Yasmin will have in her solution at 25 °C. She will have a dilute solution.

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3 years ago
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What type of decay process is demonstrated in the following reaction 40 -19K to 0 -1e+40-20Ca?
Dmitry_Shevchenko [17]
The decay process that is demonstrated by the equation above would be a beta decay. This type of radioactive decay involves the emission of a beta particle. It happens when one of the protons is transformed in the other. The beta particle here is represented by <span>0 -1e.</span>
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Coastal waves dissolving limestone sediments
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Answer:

Physical Change

Explanation:

hope this help brainliest pls

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Element A has seven valence electrons. How does its reactivity compare to that of element B, which has four valence electrons?
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Yo vine ah que me pelen todos la verga
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A sample of 0.0084 mol of HCl is dissolved in water to make a 1500 mL solution. Calculate the molarity of the HCl solution, the
Airida [17]

A solution prepared by dissolving 0.0084 moles of HCl in 1500 mL of solution has a Molarity of HCl of 5.6 × 10⁻³ M, a Molarity of H₃O⁺ of 5.6 × 10⁻³ M and a pH of 2.3.

<h3>What is Molarity ?</h3>

  • Molarity (M) is the amount of a substance in a certain volume of solution.
  • Molarity is defined as the moles of a solute per liters of a solution.
  • Molarity is also known as the molar concentration of a solution

A solution is prepared by dissolving 0.0084 moles of HCl in 1500 mL of solution. The molarity of HCl is:

[HCl] = 0.0084 moles / 1.5 L

        = 5.6 × 10⁻³ M

HCl is a strong acid according to the following equation.

HCl(aq) + H₂O(l) ⇒ Cl⁻(aq) + H₃O⁺(aq)

Thus, the concentration of H₃O⁺ will be equal to the initial concentration of HCl, 5.6 × 10⁻³ M.

Now, we will calculate the pH of the solution using its Formula ;

pH = - log[H₃O⁺]

 

    = - log [5.6 × 10⁻³]

    = 2.3

Hence, A solution prepared by dissolving 0.0084 moles of HCl in 1500 mL of solution has a Molarity of HCl of 5.6 × 10⁻³ M, a Molarity of H₃O⁺ of 5.6 × 10⁻³ M and a pH of 2.3.

Learn more about pH here ;

brainly.com/question/14950262

#SPJ1

5 0
2 years ago
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