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Serjik [45]
3 years ago
9

Some nickel sulfate solution was carefully placed in the bottom of a beaker of water. The beaker was then covered and left for s

everal days.
a. Describe what you would see after:
(i) a few hours
(ii) several days.
b. Explain your answer using your ideas of the kinctic theory of particles.
c. What is the name of the physical process that takes place in this experiment?​
Chemistry
1 answer:
Furkat [3]3 years ago
7 0
When’s this due I think I can find out
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Arrange the following in order of increasing melting point: NaCl, H2O, CH4, C6H4(OH)2.
aliina [53]

Explanation:

one thing to know is that higher surface area = higher boiling point.

NaCl has the smallest surface area, so it's the first one.

H2O has less surface area than methane, so it's second.

Methane has more surface area than H20, so it's third.

The big molecule has the most surface area, so it's last

7 0
3 years ago
Calculate the molarity a solution that is obtained by dissolving 20 g of KCl in enough water to obtain 355 mL of the solution. A
tester [92]

Answer:

a) Molarity KCl = 0.755 M

b) molality HNO = 5.09 m

Explanation:

  • Formality (F) = moles sto / L sln
  • Molarity (M) = # dissolved specie / L sln
  • molality (m) = moles sto / Kg ste
  • %p/p = ( g sto / g ste ) * 100

a) KCl ↔ K+  +  Cl-

moles KCL:

⇒ 20 g KCl * ( mol / 74.6 g ) = 0.268 mol KCl

⇒ F = 0.268 mol KCl / 0.355 L = 0.755 F

⇒ M [ K+ ] = 1 * ( 0.755) = 0.755 M

b) 24% HNO:

calculation base: 1 g solution:

⇒24 = ( g sto / g sln) * 100

⇒ 0.24 = g sto / 1

⇒ g sto = 0.24g  

⇒g sln = 1 - 0.24 = 076g sln

⇒Kg ste = 0.76 g * ( Kg / 1000g ) = 7.6 E-4 Kg ste

moles sto (HNO):

⇒ 0.24g * ( mol / 62.03g) = 3.869 E-3 moles HNO

⇒ m = 3.869 E-3 moles HNO / 7.6 E-4 Kg sln

⇒ m = 5.09 mol/Kg

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4 years ago
In a polar covalent bond,
almond37 [142]

the answer is C because convalent bond is being bonded to an anion

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3 years ago
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olga2289 [7]

Answer:

density of animal populations

Hope this helped

6 0
3 years ago
A solution with a pH of 6.0 is
Romashka-Z-Leto [24]
A solution with a pH of 6 is acidic.  a solution is considered acidic when the pH<7 while a solution is considered basic when the pH>7 (a neutral solution has a pH=7).

I hope this helps.  Let me know if anything is unclear.
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4 years ago
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