1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nikolay [14]
3 years ago
6

How much time is needed to deposit 1.0 g of chromium metal from an aqueous solution of crcl3 using a current of 1.5 a?

Chemistry
2 answers:
PSYCHO15rus [73]3 years ago
8 0
The metal component of the given compound, CrCl3, is chromium. The number of moles per 1 g of chromium is calculated through the equation below,

        n = (1 g Cr)(1 mol Cr/51.996 g Cr)
              n = 0.0192 mol Cr(3 electrons/1 mol Cr) 
                n = 0.0577 e-

Determine the number in charge by multiplying with Faraday's constant,

      C = (0.0577 mol Cr)((1 F/1 mol e-)(96485 C/ 1F)
             C = 5,566.87 C

Then, calculate time by dividing the charge with the current,

     t = 5566.87 C/1.5 A 
     t = 3711.25 minutes
     t = 61.84 hours

<span><em>Answer: 61.84 hours</em></span>


sergiy2304 [10]3 years ago
3 0

Answer:

t=406.2s=6.77min

Explanation:

Hello,

At first, one must compute the CrCl3 moles by using its molecular mass:

n_{CrCl_3}=1gCrCl_3*\frac{1molCrCl_3}{152.35gCrCl_3}=0.00632molCrCl_3

Now, we can apply the following equation to compute the requested time, based on the Faraday's constant, the involved charge and the fed current:

C=n_{CrCl_3}*F\\C=0.00632molCrCl_3*96485\frac{C}{molCrCl_3}\\C=609.3C\\C=I*t\\t=\frac{C}{I}=\frac{609.3C}{1.5C/s} \\t=406.2s=6.77min

Best regards.

You might be interested in
How many significant figures are in the measurement 0.0030010 kilograms?
devlian [24]
There are 5 significant figures
6 0
2 years ago
Read 2 more answers
Please help a s a p!
ValentinkaMS [17]
Predator 1: wolves
Predator 2: foxes
Prey 1: bison
Prey 2: prairie dogs
3 0
3 years ago
Blood ph is kept near a value of 7.3 - 7.5 because of
Ede4ka [16]

Answer:  Neutral Value

Explanation:  pH of the blood is maintained at 7.0 to 7.5that is neutral value.

This is because if the pH of the is lower than the maintained value then it will become acidic .

Acidic pH can cause the medical urgency known as acidosis leading to vomiting, diarrhea etc.

If the pH becomes higher, then the blood will become basic in nature and it can also leas to the death of the person.

That is why the pH of the blood is maintianed at neutral value of 7.0 to 7.5

5 0
3 years ago
Read 2 more answers
Add groups to complete polyvinyl alcohol, formed by the polymerization of the following monomer. If a carbon atom contains only
e-lub [12.9K]

Answer:

The resulting structure is:

R-CH-CH2 (OH)-CH-CH2(OH)-CH-CH2(OH)-CH-...

Explanation:

It can be said that vinyl alcohol cannot be polymerized by addition polymerization, since a very unstable radical would be formed, which is not possible. Generally, it is formed by polymerization and subsequent hydrolysis of the vinyl polyacetate. According to the exercise, the structure that results with its four units can be seen that the hydroxyl groups are found in the methylene carbons

8 0
3 years ago
The reactants of two chemical equations are listed.
Oksi-84 [34.3K]

Answer:

Equation 2, because K being more reactive, exchanges position with Pb in PbNO3.

Explanation:

3 0
3 years ago
Other questions:
  • Gasoline has a density of 0.749 g/mL. How many pounds does 19.2 gallons of gasoline weigh? Use significant figures. Do not enter
    12·1 answer
  • The state of matter of a material depends on its what?
    13·2 answers
  • A man weighing 48 newtons climbs a 2.0-meter ladder. How much work is done? 0.0 J 24 J 96 J 124 J
    13·2 answers
  • The compound potassium nitrate is a strong electrolyte. Write the transformation that occurs when solid potassium nitrate dissol
    6·1 answer
  • Elaborate on the difference in natural occurrences between fission and fusion reactions.
    11·1 answer
  • What’s the answer????
    7·2 answers
  • Why do we put salt on the floor in the winter?
    14·1 answer
  • Select the true statements about SDS‑PAGE, a method of separating proteins. Assume that SDS‑PAGE is performed under reducing
    10·1 answer
  • Aquien le elimina las respuestas
    15·1 answer
  • Identify the pair in whic 1 the formula does not match the name
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!