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Contact [7]
2 years ago
5

What is a solution of zinc and copper?five letter word

Chemistry
1 answer:
Lana71 [14]2 years ago
5 0

Answer:

Brass

Explanation:

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.

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Hey! I was wondering how to get the solution to this question!
zzz [600]

Answer:

6.22 × 10⁻⁵

Explanation:

Step 1: Write the dissociation reaction

HC₆H₅COO ⇄ C₆H₅COO⁻ + H⁺

Step 2: Calculate the concentration of H⁺

The pH of the solution is 2.78.

pH = -log [H⁺]

[H⁺] = antilog -pH = antilog -2.78 = 1.66 × 10⁻³ M

Step 3: Calculate the molar concentration of the benzoic acid

We will use the following expression.

Ca = mass HC₆H₅COO/molar mass HC₆H₅COO × liters of solution

Ca = 0.541 g/(122.12 g/mol) × 0.100 L = 0.0443 M

Step 4: Calculate the acid dissociation constant (Ka) for benzoic acid

We will use the following expression.

Ka = [H⁺]²/Ca

Ka = (1.66 × 10⁻³)²/0.0443 = 6.22 × 10⁻⁵

3 0
3 years ago
The process by which DNA is copied during the cell cycle
Eduardwww [97]
Cell replication in somatic cells is called mitosis.
Cell replication in gametes (sex cells) is called meiosis.
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3 years ago
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3. compounds in which elements are held together by covalent bonds...keeps their own properties
stich3 [128]
The anserr is c that what i think
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3 years ago
How many forces act on each person? When they put there hands together or High five
EastWind [94]

Answer:

Left and right: two forces

Total: four forces

Explanation:

If it's just the forces that they are using it would be two the force of each person's hand on the other. However there is also gravity pulling down on their hand but they use another force to pull it up which you can call the normal force.

if this helped please hit the thanks button <3

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Please write the process (how soap is made?.......................​
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Soap is created by mixing fats and oils with a base as opposed to detergent which is created by combining chemical compounds in a mixer.

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