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kumpel [21]
3 years ago
5

Describe five sources of chemical weathering

Chemistry
1 answer:
artcher [175]3 years ago
8 0
Hydration, oxidation, carbonisation, hydrolysis and dissolution are forms of chemical weathering.
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A cyanide solution with avolume of 12.73 mL was treated with 25.00 mL of Ni2+solution (containing
natima [27]

Answer:

The molarity of this solution is 0,09254M

Explanation:

The concentration of the Ni²⁺ solution is:

Ni²⁺ + EDTA⁴⁻ → Ni(EDTA)²⁻

0,03935L × 0,01307M = 5,143x10⁻⁴ moles Ni²⁺ ÷ 0,03010L =<em>0,01709M Ni²⁺</em>

25,00 mL of this solution contain:

0,01709M × 0,02500L = 4,2716x10⁻⁴ moles of Ni²⁺

The moles of Ni²⁺ that are in excess and react with EDTA⁴⁻ are:

0,01015L × 0,01307M = 1,3266x10⁻⁴ moles of Ni²⁺

Thus, moles of Ni²⁺ that react with CN⁻ are:

4,2716x10⁻⁴ - 1,3266x10⁻⁴ = 2,9450x10⁻⁴ moles of Ni²⁺

For the reaction:

4CN⁻ + Ni²⁺ → Ni(CN)₄²⁻

Four moles of CN⁻ react with 1 mole of Ni²⁺:

2,9450x10⁻⁴ moles of Ni²⁺ × \frac{4 mol CN^-}{1 molNi^{2+}} = <em>1,178x10⁻³ moles of CN⁻</em>

As the volume of cyanide solution is 12,73mL. The molarity of this solution is:

<em>1,178x10⁻³ moles of CN⁻ ÷ 0,01273L = </em><em>0,09254M</em>

I hope it helps!

5 0
3 years ago
explain why hydrogen chloride does not conduct electricity, but a solution of hydrogen chloride and water conduct electricity
grin007 [14]
The answer is… Ions are highly charged species that can readily conduct an electrical current. But hydrogen chloride the gas does not exist as ions since there is no solvent medium for them to dissolve into. Hope this helps!
3 0
3 years ago
Describe what happens to the molecules in the ice as temperature of the ice increases
german

Answer:

When you heat ice, the individual molecules gain kinetic energy, but until the temperature reaches the melting point, they don't have energy to break the bonds that hold them in a crystal structure. They vibrate more quickly within their confines as you add heat, and the temperature of the ice goes up.

8 0
2 years ago
Read 2 more answers
What is the name of this ion: Cl- ?
Bingel [31]
CL- is Chloride, so your answer would be C.Chloride. 
5 0
3 years ago
Write a hypothesis for this: Eating Breakfast increases performance in school
Gelneren [198K]

Answer:

If someone were to eat breakfast before going to school, they would have an increased work performance while in school.

Explanation:

P.S. Brainliest is cool, you should totally hand one over.

7 0
3 years ago
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