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
alexdok [17]
3 years ago
9

Air containing 0.04% carbon dioxide is pumped into a room whose volume is 6000 ft3. The air is pumped in at a rate of 2000 ft3/m

in, and the circulated air is then pumped out at the same rate. If there is an initial concentration of 0.4% carbon dioxide, determine the subsequent amount in the room at any time.What is the concentration at 10 minutes?
Mathematics
1 answer:
borishaifa [10]3 years ago
4 0

Answer:

the concentration at 10 minutes= 0.4+0.0133= 0.4133%

Step-by-step explanation:

Air containing 0.04% carbon dioxide

V, volume of room is 6000 ft3.

Q, rate of air 2000 ft3/min,

initial concentration of 0.4% carbon dioxide,

determine the subsequent amount in the room at any time.

What is the concentration at 10 minutes?

firstly, we find the time taken for air to completely filled the room

Q = V/t

t = V/Q = 6000/2000 = 3min

so, its take 3mins for air to be completely filled in the room and for exhaust air to move out.

there is  an initial concentration of 0.4% carbon dioxide, and the air pump in is 0.04%.

therefore,

3mins = 0.04% of CO2

3*60 =180sec = 0.04%

1sec = 0.04/180 = 0.00022%/sec

so at any time the concentration of CO2 is 0.4 + 0.00022 =0.40022%/sec

What is the concentration at 10 minute

the concentration at 10minutes = the concentration for 1minute because at every minutes, the concentration moves in is moves out. = concentration for 2000ft3.

for 0.04% = 6000ft3

   ?          = 2000ft3

              = 2000* 0.04)/6000 =0.0133%

the concentration at 10 minutes= 0.4+0.0133= 0.4133%

You might be interested in
For the following right triangle, find the length x
Andrews [41]

Answer:

5\sqrt{2}

Step-by-step explanation:

https://www.symbolab.com/solver/radical-equation-calculator/sin45%3D%5Cfrac%7B5%7D%7Bx%7D

7 0
3 years ago
Solve the system by substitution: -4.5x-2y=-12.15 3.25x-y=-0.75
valina [46]

Answer:

The answer is x=0.97 while y=3.90

4 0
3 years ago
Solve the system of linear equations.<br> 3x + 5y = -2<br> 2x - y = 3
natita [175]

Answer:

3x + 5y = -2 is x= −5 /3 y+ −2 /3

2x - y = 3 is x= 1 /2 y+ 3 /2

Step-by-step explanation:

7 0
2 years ago
On a coordinate plane, parallelogram A B C D has points (3, 6), (6, 5), (5, 1), and (2, 2).
jeka94

Answer:

  13 square units

Step-by-step explanation:

The bounding rectangle is 4 units wide and 5 units high, so has an area of 4×5 = 20 square units. From that are subtracted the areas of 4 triangles. 2 of them are 3 wide and 1 high, so have a combined area of 3×1 = 3 square units. The other two are 1 wide and 4 high, so have a combined area of 1×4 = 4 square units.

Then the area of the parallelogram is ...

  20 -3 -4 = 13 . . . . square units

3 0
3 years ago
HELP ME , I CANNOT POST PICTURE &amp; I HAVE 2 THINGS THAT REQIRE A PICTURE WHAT DO I DO ??!
Rashid [163]

Answer:

Step-by-step explanation:

so when you post your picture you wanna click the thing that looks like a paper clip and attach a file or picture. or your can copy your photo and paste it in your question if you dont know how to take a picture just screenshot it *depends what kind of computer your using*

5 0
3 years ago
Read 2 more answers
Other questions:
  • Emily is giving candy to 8 of her friends. She wants to give each friend
    12·2 answers
  • You want to save ₹1,17,000 to buy your first self-driving magic carpet. You deposit ₹90,000 in a bank at an interest rate of 6\%
    14·1 answer
  • the density of silver is 65.2g/cm3. if the volume of a piece of silver is 21.4cm3, what will the mass be in grams
    12·1 answer
  • Can someone identify the meaning of constant of proportionality?
    10·2 answers
  • Select 2 points PLEASE ANSWER THANKS YOU SO MUCH
    6·1 answer
  • I did this and turned it in, I got a C on it, could you tell me what to fix so I can get an A?
    13·1 answer
  • It costs $45 to rent a car each day. There is also a fee of $12. How much does it cost to rent a car for 5 days,including the fe
    7·2 answers
  • Laura was late to class 5 times in September. Each time she was late she missed 48 minutes of
    7·1 answer
  • What is the rate of change for EACH function?
    8·1 answer
  • 1dasd<br>2sdasd<br>2asdas<br>3adsd<br>2sadasd<br>3asdas<br><br>2sda<br>12sdasd<br>1asda<br>2asdasd
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!