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
Radda [10]
4 years ago
7

Which of these statements is true?

Physics
2 answers:
snow_lady [41]4 years ago
7 0
B). Some elements found in nature exist as molecules. 
That is, their atoms travel around in bound pairs. 
Examples are Hydrogen, Oxygen, and Nitrogen.

A). No.  Without atoms, you can't make a molecule.

C). No.  A compound is a chemical combination of two or more elements.

D). No.  An atom is the smallest unit of ONE single element.
Oduvanchick [21]4 years ago
5 0

Hello, your answer is, C. Some compounds include only one type of element.

I hope it helped!

You might be interested in
The temperature of a 2.0-kg block increases by 5°C when 2,000 J of thermal energy are added to the block. What is the specific h
Nadya [2.5K]
Heat = m x c x Δθ
2000 = 2 x c x 5
Specific heat c = 200 J / Kg / C
4 0
3 years ago
My Notes A container is divided into two equal compartments by a partition. One compartment is initially filled with helium at a
Ostrovityanka [42]

Answer:

final-temperature = T_{f} = 252.51K

Explanation:

we can solve this problem by using the first law of thermodynamics.

    \Delta U= Q-W

Q= heat added

U= internal energy

W= work done by system

                        E_{final}= E_{initial}

<u> C_{v} (N_{2}) C_{v}(He) T_{f} =C_{v}( N_{2}) T_{N_{2} } C_{v} (He) T_{He}    (1)</u>

C_{v}(N_{2})=1.04\frac{KJ}{Kg K}

C_{v}(He)=5.193\frac{KJ}{Kg K}

now

From equation 1

T_{f}=\frac{C_{v}( N_{2}) T_{N_{2} } C_{v} (He) T_{He}}{C_{v} (N_{2}) C_{v}(He)}

T_{f} = \frac{315\times1.04+5.193\times240}{1.04+5.193}

T_{f} = 252.51K

4 0
4 years ago
Two identical parallel plate capacitors A and B connected to a battery of V volts w/ the switch S closed. The switch is now open
Basile [38]
The electrostatic energy stored in a capacitor with capacitance C_0, with a voltage difference V applied to it, and without dielectric, is given by
U_0 =  \frac{1}{2} C_0 V^2
Now let's assume we fill the space between the two plates of the capacitor with a dielectric with constant k. The new capacitance of the capacitor is
C_k = k C_0
So, the energy stored now is
U_k =  \frac{1}{2}C_k V^2= \frac{1}{2}kC_0 V^2

Therefore, the ratio between the energies stored in the capacitor before and after the introduction of the dielectric is
\frac{U_k}{U_0}= \frac{ \frac{1}{2}kC_0 V^2 }{ \frac{1}{2} C_0 V^2}=  k
5 0
3 years ago
3. What can you infer about an ion that has a positive charge?
IRINA_888 [86]

Answer: This ion is derived from atom who lost one electron.

4 0
3 years ago
When in orbit, a satellite such as the space shuttle is
My name is Ann [436]
When in orbit, a satellite such as the space shuttle s <span>in non-accelerated motion. </span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • n general, which trophic level has the LEAST energy available to it? A) producer B) primary consumer C) secondary consumer D) te
    9·1 answer
  • The velocity of a 40 kg object increases from 20 m/s to 30 m/s in 2 seconds. What is the acceleration of the object during these
    14·1 answer
  • What is the final velocity (in m/s) of a hoop that rolls without slipping down a 4.50-m-high hill, starting from rest?
    12·1 answer
  • A car moves to the right as shown. In order for the
    13·1 answer
  • If the fan blades rattle while the fan is turning, you can stop the noise by
    13·2 answers
  • _______ force is the force that keeps an object moving on a curved path that is directed inward towards the center of a rotation
    12·1 answer
  • Helppppo!!!
    9·1 answer
  • A football player sprints down the field for a touchdown traveling a total of
    15·1 answer
  • What is the logical oreder for these words : verse, interlude,verse,refrain, introduction,refrain,coda,refrain,verse
    5·1 answer
  • List the compositional layers in order of most dense to least dense
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!