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
inn [45]
4 years ago
15

Which statement describes how a covalent molecule would be formed? A) an atom of an element with atomic number 12 reacts with on

e oxygen atom B) an atom of an element with atomic number 8 reacts with two hydrogen atoms C) an atom of an element with atomic number 20 reacts with two fluorine atoms D) two atoms of an element with atomic number 11 react with one sulfur atom
Physics
2 answers:
Juli2301 [7.4K]4 years ago
7 0
<span>an atom of an element with atomic number 8 reacts with two hydrogen atoms 

</span>
Anton [14]4 years ago
3 0

The answer is letter B .

You might be interested in
Which is the hottest and coldest planet in solar system ?​
Dafna1 [17]

Answer:

Hottest venus

Coldest pluto

Explanation:

The hottest planet in the solar system is Venus with an average temperature of 464 degree Celsius and the coldest planet in the solar system is Pluto with an average temperature of -225 degree Celsius.

7 0
3 years ago
Read 2 more answers
(d) the optimum pressure ratio of the cycle to maximize the net output power
xxMikexx [17]

Answer:

i just took this test no joke and i got the correct answer which was c

Explanation:

5 0
3 years ago
A boy on the beach holds a spherical balloon filled with air. at 10:00am, the temperature on the beach is 20°c and the balloon h
Anon25 [30]
For idea gases, volume is directly proportional to temperature. That is, an increase in temperature leads to increase in volume and vice versa.

Therefore,
V1/T1 = V2/T2 => T2 = (V2*T1)/V1

Assuming that the balloon is spherical in shape,

V= 4/3*pi*R^3.... In the formula for calculating T2, 4/3*pi cancels out.

R1 = 30/2 15 cm; R2 = 30.5/2 = 15.25 cm; T1 = 20+273.15 =293.15 K

Therefore,

T2 = (R2^3*T1)/R1^3 = (15.25^3*293.15)/15^3 = 308.05 K = 34.9 °C
6 0
3 years ago
A marble slides without friction in a vertical loop around the inside of a smooth, 28.6 cm diameter horizontal pipe. The marble'
Leviafan [203]

Answer:3.49 m/s

Explanation:

Given

Speed of marble at Bottom v=4.22 m/s

Diameter of loop d=28.6 cm

As Energy is conserved therefore Energy at top is equal to energy at bottom

E_T=E_B

\frac{mv^2}{2}+mgh=\frac{mv_0^2}{2}  ,where v_0 is the velocity at bottom

\frac{v^2}{2}+gh=\frac{v_0^2}{2}

v_0^2=v^2+2gh

v^2=v_0^2-2gh

v=\sqrt{v_0^2-2gh}

v=\sqrt{4.22^2-2\times 9.8\times 0.286}

v=\sqrt{17.8084-5.6056}

v=3.49 m/s

                       

7 0
3 years ago
A 16.0 kg child on roller skates, initially at rest, rolls 2.0 m down an incline at an angle of 20.0° with the horizontal. If th
enyata [817]

The kinetic energy of the child at the bottom of the incline is 106.62 J.

The given parameters:

  • <em>Mass of the child, m = 16 kg</em>
  • <em>Length of the incline, L = 2 m</em>
  • <em>Angle of inclination, θ = 20⁰</em>

The vertical height of fall of the child from the top of the incline is calculated as;

sin(20) = \frac{h}{2} \\\\h = 2 \times sin(20)\\\\h = 0.68 \ m

The gravitational potential energy of the child at the top of the incline is calculated as;

P.E = mgh\\\\P.E = 16 \times 9.8 \times 0.68\\\\P.E = 106.62 \ J

Thus, based on the principle of conservation of mechanical energy, the kinetic energy of the child at the bottom of the incline is 106.62 J since no energy is lost to friction.

Learn more about conservation of mechanical energy here: brainly.com/question/332163

7 0
2 years ago
Other questions:
  • How is gravity best described?
    6·2 answers
  • A shot putter releases the shot some distance above the level ground with a velocity of 12.0 m/s, 51.0 ∘above the horizontal. Th
    9·1 answer
  • Summarize how psychology is considered a science.
    8·2 answers
  • State the pressure law
    11·1 answer
  • If a skier travels at a constant velocity downhill, this means the forces on her are: ................. A. Zero B. Negligible C.
    7·1 answer
  • What are the factors affect the vapor pressure of a liquid?
    12·1 answer
  • Which has more gravitational potential energy: a 300 N cat at a height of 6 meters or a 50 N bird at a height of 50 meters
    11·1 answer
  • In a machining operation that approximates orthogonal cutting, the cutting tool has a rake angle =100 . The chip thickness ratio
    14·1 answer
  • A flowerpot that has a mass of 1.5 kg is sitting on a windowsill 30 meters from the ground. Is the energy of the flowerpot poten
    13·1 answer
  • Which term refers to the smooth and effective working together of your muscle and bones?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!