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
Lelechka [254]
3 years ago
9

Twenty-seven pounds (27 lb) of chlorine gas is used for treating 750,000 gal of water each day. The chlorine used up by the micr

oorganisms in the water is measured to be 2.6 mg/L. What is the residual (excess) chlorine concentration in the treated water?
Chemistry
1 answer:
Delicious77 [7]3 years ago
3 0

Answer:

The correct answer is 1.778 milligrams per liter.

Explanation:

Based on the given information, the concentration of chlorine gas given is 27 pounds or 27*453.59 = 12327.93 grams.

The quantity of water given is 750000 gallons or 750000 * 3.754 = 2815500 L

The concentration of chlorine used up by the microorganism is 2.6 mg/L or 0.0026 gm/L.

Thus, for 2815500 L of water, the amount of chlorine used is,

= 2815500 * 0.0026

= 7320.3 grams

The left quantity of chlorine is 12327.93 - 7320.3 = 5007.63 grams

The concentration of residual chlorine is,

= 5007.63 g/2815500 = 0.00177859 or 1.778 mg/L.

You might be interested in
Who discovered the nucleus?
Mama L [17]
Ernest Rutherford i believe
5 0
3 years ago
Read 2 more answers
For which of the following reactions are both reactants and products likely to be found when the reaction appears to be complete
Scorpion4ik [409]
The answer is
<span>HF + H2O <--> H3O(+) + F(-)
</span>
<span>HF + H2O gives  H3O(+) + F(-)
and </span>
 H3O(+) + F(-) gives <span>HF + H2O
it is a reciprocal reacation, so </span>
<span>reactions are both reactants and products </span>

6 0
3 years ago
Which wave is carrying the most energy? A wave with large amplitude. A wave with very large amplitude. A wave with small amplitu
tankabanditka [31]

Answer:

A wave with small amplitude.

Explanation:

Amplitude us inversely proportional to energy so the smaller the amplitude, the higher the energy.

Hope it helps.

4 0
3 years ago
A simple of helium measuring 6L was kept at a pressure is of 1.5 atm ,if pressure is doubled what would be its new volume ?
KATRIN_1 [288]

Answer:

3L

Explanation:

The following data were obtained from the question:

V1 (original volume) = 6L

P1 (original pressure) = 1.5 atm

P2 (new pressure) = 2 x P1 ( since the new pressure is doubled)

P2 = 2 x 1.5

P2 = 3 atm

V2 (new volume) =?

Using the Boyle's law equation P1V1 = P2V2, the new volume can be obtain as follow:

P1V1 = P2V2

1.5 x 6 = 3 x V2

Divide both side by 3

V2 = (1.5 x 6)/3

V2 = 3L

From our calculations, the new volume will be half the original volume and this will be 3L

6 0
3 years ago
When the relative humidity is 90%, we say the air is: supercooled superheated saturated humid
enyata [817]

Explanation:

The amount of moisture present in air at a given temperature is known as humidity.

Whereas relative humidity is the amount of percentage of moisture it contains when compared to the maximum moisture it can contain at a given temperature.

Also % Relative humidity (RH) = \frac{P}{P_{vap}}

where,            P = the partial pressure of water vapour

              P_{vap} = the equilibrium vapor pressure at a particular temperature.

Accrding to the Clausius-Clapeyron equation, P_{vap} decreases with decrease in temperature.

Hence, it means that at super-cooled conditions the %RH would be 100%.

On the other hand, the temperature will be very high at super-heated conditions.

Hence, P_{vap} will be high hence %RH will be low.

It is also known that at saturated condition, P = P_{vap}

Therefore, %RH is 100.

Thus, we can conclude that when the relative humidity is 90%, we say the air is humid.

3 0
3 years ago
Other questions:
  • The major elements of organic molecules is carbon identify three other carbon is normally bonded to
    13·1 answer
  • What is the name of the covalent compound CCl4?
    11·1 answer
  • An opened carbonated drink is an example of what type of solution?
    7·2 answers
  • What occurs at one of the electrodes in both an electrolytic cell and a voltaic cell?
    14·1 answer
  • Which of the following is an example of genetic engineering
    14·2 answers
  • As a stove heats a pot, particles in the hot pot bump into particles of water 1 point
    12·1 answer
  • ]\ \textless \ br /\ \textgreater \ \huge \boxed{ \red{φµεรƭเσɳ -}} \ \textless \ br /\ \textgreater \ ​ \ \textless \ br /\ \te
    15·2 answers
  • This is due in five mintues please help
    7·1 answer
  • How are all atoms of silver alike, but different from atoms of other elements?
    6·1 answer
  • PLEASE HELP <br> I do not understand
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!