Nitrogen (like70ish % and oxygen like 20%)
The beaker which consists of water at a temperature of 45℃ represents ‘The average kinetic energy of water particles’.
<u>Explanation:
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According to ‘Kinetic Molecular Theory of water’ the average kinetic energy of atoms in a system is directly proportional to its temperature. So, this explains that the kinetic energy in between the inner particles of water which is in the beaker is something which represents the temperature of the water as 45℃. This kinetic energy is produced due to the moment of particles of the matter. (A liquid is the second state of matter which is prepared by tiny particles, such as atoms, inter-molecular bonds between the particles helps these atoms to hold together)
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Jennifer
Explanation:
she has more mass which means she is using more force
Polstyrene foam is more commonly known as styrofoam. When clumped together, styrofoam would float on water. So, the easiest and the most cost-efffective way of separating sand from styrofoam is flotation with the use of water.
Other processes are also available. Polystyrene is soluble in organic solvents like acetone, toluene or benzene. By adding these solvents, polystyrene would react so that you are left with only the sand. This process is called solvent extraction. If you want to recover the styrofoam, just evaporate the solvent out and you are left with a solid form of the polystyrene.
No clue
i have to answer someone to ask a q sorry