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11111nata11111 [884]
4 years ago
5

5 lists of physical change

Chemistry
1 answer:
Alecsey [184]4 years ago
6 0
Crushing a can, breaking glass, cutting paper, boiling water, chopping wood, and mixing water and sand
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The poh of a solution is 9.32. calculate the hydrogen ion concentration of the solution.
natima [27]
PH+pOH=14
pOH=9.32
pH=14-pOH=14-9.32=4.68
pH=4.68

pH=-log[H⁺]
-pH= log[H⁺]

[H^{+}]= 10^{-pH} = 10^{-4.68}=2.09*10^{-5}

[H^{+}] = 2.09*10^{-5}M
4 0
4 years ago
Calculate the mass of 4.95 x 10^15 Ag atoms
solmaris [256]

Answer:

              8.87 × 10⁻⁷ grams

Explanation:

Moles = No. of Particles / 6.022 × 10²³ Particles/mol

Moles = 4.95 × 10¹⁵ atoms / 6.022 × 10²³ atoms/mol

Moles = 8.22 × 10⁻⁹ mol

Also,

Mass = Moles × M.Mass

Mass = 8.22 × 10⁻⁹ mol × 107.87 g/mol

Mass = 8.87 × 10⁻⁷ grams

4 0
3 years ago
When a gas is dissolved in a liquid, what happens when the pressure
In-s [12.5K]

When gas is dissolved in a liquid, more gas dissolves into the liquid. It states that when the pressure of the gas when dissolved in liquid increases, the solubility increases. Thus, the correct option is C.

<h3>What is Pressure?</h3>

Pressure may be defined as the amount of force devoted perpendicular to the surface of an object per unit area. The unit of pressure is Pascal or Pa.

The solubility of any solution is directly proportional to the pressure that is exerted on it at a given time. As the pressure increases, more the solute dissolves into the solvent.

Therefore, the correct option for this question is C.

To learn more about Solubility, refer to the link:

brainly.com/question/23946616

#SPJ1

6 0
2 years ago
Which poison can be identified by a color test?
marysya [2.9K]
Phosphorus, copper, carbon monoxide, hydro cyanic acid, nitrates, potassium chlorate, and aniline are some of the examples of poison that can be identified by a color test according to forensic pathology.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
4 0
3 years ago
Read 2 more answers
The acid from burning coal is rained back down onto the plant surface and reacts with limestone?
ycow [4]

Answer:

Yes, it erodes the limestone

6 0
3 years ago
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