A spring scale is a type of weighing scale, it works because it uses a spring that is proportional to the distance that the spring is from its resting position.
Explanation:
number of atoms = moles × avegadro number
so 5.55 × 10^2 = moles × 6.023 × 10^23
moles = 5.55 × 10^2 ÷ 6.023 × 10^23 = 9.214×10−22 moles
Blood is pumped throughout the body by your heart. Your heart is the main organ responsible for blood circulation.
Answer:
Potential Energy is stored energy or energy of position (gravitational). The object isn't moving. For example, a ball being held is potential energy because the object isn't moving but it has the potential of turning into kinetic energy.
Kinetic Energy is the energy of motion. For example, running. You are moving, and there is clear action and activity
Answer: 0.336L
Explanation:
4HF + O2 —> 2F2 + 2H2O
1mole of HF occupies 22.4L at stp.
Therefore Xmol will occupy 0.67L i.e
Xmol of HF = 0.67/22.4 = 0.03mol
From the equation,
4moles of HF 2moles of F2.
Therefore, 0.03mol of HF will produce = (0.03x2)/4 = 0.015mol of F2.
1mol of F2 occupies 22.4L at stp.
Therefore, 0.015mol will occupy = 0.015 x 22.4L = 0.336L
