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
grandymaker [24]
3 years ago
15

11 swimming pool water can be kept free of harmful bacteria by adding aqueous sodium chlorate(i),naocl. this reacts with water t

o produce hocl molecules which kill bacteria.ocl–(aq) h2o(reversible) oh–(aq) hocl (aq)in bright sunshine, the ocl– ion is broken down by ultra-violet lightocl–(aq) uv light → cl–(aq) ½o2(g)which method would maintain the highest concentration of hocl (aq)?a acidify the pool waterb add a solution of chloride ionsc add a solution of hydroxide ionsd bubble air through the water
Chemistry
1 answer:
antoniya [11.8K]3 years ago
4 0
The answer is chlorine
You might be interested in
Purification of chromium can be achieved by electrorefining chromium from an impure chromium anode onto a pure chromium cathode
mylen [45]

Answer:

696 h

Explanation:

Let's consider the reduction of Cr³⁺.

Cr³⁺(aq) + 3e⁻ → Cr(s)

We can establish the following relations.

  • The molar mass of Cr is 52.0 g/mol.
  • 1 mol of Cr is deposited when 3 moles of e⁻ circulate.
  • 1 mole of e⁻ has a charge of 96468 c (Faraday's constant).
  • 1 A = 1 c/s
  • 1 h = 3600 s

<em>How many hours will it take to plate 13.5 kg of chromium onto the cathode if the current passed through the cell is held constant at 30.0 A?</em>

13.5 \times 10^{3} gCr.\frac{1molCr}{52.0gCr} .\frac{3mol/e^{-} }{1molCr} .\frac{96468c}{1mol/e^{-}} .\frac{1s}{30.0c} .\frac{1h}{3600s} =696 h

3 0
3 years ago
Alcohols have more hydrogen bonding .<br>(True or False) ?!​
statuscvo [17]

Answer:

True

Explanation:

An alcohol is an organic molecule containing an -O-H group. Any molecule which has a hydrogen atom attached directly to an oxygen or a nitrogen is capable of hydrogen bonding.

3 0
3 years ago
Read 2 more answers
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 16.0 g of luminol into a total vol
nikitadnepr [17]

 The  molarity  of  the stock solution of  luminol  is 1.2 M


 <u><em>calculation</em></u>

step 1:  find the moles  of  luminol  using   (moles=  mass/molar mass)  formula


molar  mass  of Luminol= 177 g/mol

moles  is therefore= 16.0 g/ 177  g/mol=0.0904 moles


Step  2:  find the molarity  using (molarity= moles/volume in liters)  formula

     convert  Ml  into liters =  75.0/1000= 0.075 L

  molarity is therefore= 0.0904 moles/ 0.075 L= 1.2M

6 0
3 years ago
Only humans can remove carbon from this carbon sink / reservoir.
FinnZ [79.3K]
I think it was D. Hopefully I’m right
3 0
3 years ago
Read 2 more answers
Which wavelength bands are just outside the visible range?
Norma-Jean [14]

Answer: The ultraviolet or UV portion

Explanation:

The term comes from the fact that this type of radiation is slightly beyond the violet region of visible wavelengths

7 0
2 years ago
Other questions:
  • If i have 8 L of 0.25 M solution, how many miles of MgCl2 are present
    5·1 answer
  • When a sky diver jumps out of a plane, the speed at which he or she falls to the ground continues to increase. What force is res
    14·2 answers
  • we can determine the velocity of a wave when given the _______ and the wavelength. (2 points) frequency amplitude crest equilibr
    14·2 answers
  • Need help ASAP plz. Only gave 10 min
    11·1 answer
  • Stalactites and stalagmites form as ________ precipitates out of the water evaporating in underground caves.
    15·1 answer
  • The yttrium- nuclide radioactively decays by electron capture. Write a balanced nuclear chemical equation that describes this pr
    6·1 answer
  • NEED HELP ASAP NOT DIFFICULT
    12·2 answers
  • When can the park be reopen to people and animals. Explain calculations and answers. Explain the concept.
    11·2 answers
  • As we move across the periodic table of elements, certain trends are evident. The placement of individual elements in the period
    9·1 answer
  • 1) Define water gas<br>2) The skuLL is divided into two parts name them​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!