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
MariettaO [177]
3 years ago
12

Oxygen, nitrogen, and carbon are all ___________________.

Chemistry
1 answer:
Natalka [10]3 years ago
5 0
Organic elements, depends on the context of the question but I suspect that is the answer. The organic elements are H,O,C,N,P,S
You might be interested in
What is a good indicator for titrating potassium hydroxide with hydrobromic acid?
Cerrena [4.2K]
Potassium hydroxide is a strong base and hydrobromic acid is a strong acid. This implies that the pH of the end-point [neutralization] of their titration will be around pH 7. A good indicator for this kind of pH is bromthymol blue. This is because this indicator changes its colour at pH 7.
4 0
3 years ago
Air at 7S°F and14.6 though a cfm(cubic ft per minute) and the The flow rate is 48000 psia flows though a rectangular duct of Ix2
IgorLugansk [536]

Explanation:

The given data is as follows.

Air is at 75^{o}F and 14.6 psia.

\varepsilon = 0.00015 ft,     Flow rate, (Q) = 48000 ft^{3}/m

(a)  Formula to calculate hydraulic radius (r_{H}) is as follows.

              r_{H} = \frac{\text{free flow area}}{\text{wet perimeter}}

                          = \frac{2 \times 1}{2(1) + 2(2)}

                          = \frac{1}{3} ft

Formula for equivalent diameter is as follows.

                     D_{eq} = 4 \times r_{H}

                                    = 4 \times \frac{1}{3} ft  

                                    = \frac{4}{3} ft

(b)    Formula for velocity floe is as follows.

                         Q = VA

                     V = \frac{Q}{A}

                        = \frac{48000}{2 \times 1} ft/min

                        = 24000 ft/min

(c)   Formula to calculate Reynold's number is as follows.

         R_{e} = \frac{D \times V \times \rho}{\mu}

                   = \frac{\frac{4}{3} \times 24000 \times 0.0744}{0.0443}  (as \rho = 0.0744 lb/ft^{3} and \mu = 0.0443 lb/ft. hr)

                   = 53742.66 hr/min  

As 1 hr = 10 min. So, 53742.66 hr/min \times \frac{60 min}{1 hr}

                            = 3224559.6

(d)   Formula to calculate pressure drop (\Delta P) is as follows.

              \frac{\Delta P}{L} = \frac{4f \rho V^{2}}{2Dg_{c}}

Putting the given values into the above formula as follows.

               \frac{\Delta P}{L} = \frac{4f \rho V^{2}}{2Dg_{c}}

                      = \frac{4 \times 0.00015 \times 100 \times 0.0744 \times (24000)^{2}}{2 \times \frac{4}{3} \times {4}{3}}

                      = 6.238 lb/ft^{2}

5 0
3 years ago
Express the number 4.80x10-1 in standard form
rosijanka [135]
The number in standard form is 0.480
6 0
3 years ago
How many atoms are there in 1.00g of na
Harlamova29_29 [7]

Answer: 2.62 x 10^22 atoms

Explanation:Please see attachment for explanation

5 0
3 years ago
Convert 6.6 ft to meters. Use the<br> conversion factor 1 m = 3.3 ft
matrenka [14]

Answer:

2.01168 or 2.01 meters

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is evaporation? Describe what happens at the molecular level during evaporation.
    7·1 answer
  • What best discribes the relationship between wavelength and frequency in a electromagnetic wave
    9·1 answer
  • 1. The reaction below describes cellular respiration. Which compounds are the reactants and which are the
    5·1 answer
  • Question 6(Multiple Choice Worth 3 points)
    14·2 answers
  • What is the potential energy of the ball as it is half way through the fall, 20 meters high?
    13·1 answer
  • Which is not a layer found in the earth's mantle? A. Upper mantle B. asthenosphere C. lithosphere D.crust
    13·1 answer
  • 1.In class, students learned that a cart will move when a force of 50 N or greater is applied. A student pushed on the cart with
    9·1 answer
  • The student titrated 10 ml of standered 0.15 M HCl with his sodium hydroxide solution. When the titration reached the equivalenc
    8·1 answer
  • What is the role of electric current in electrolysis
    13·1 answer
  • A compound which is mineral acid is generally classified as a????? urgent please​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!