According to the kinetic theory of gases, the collisions among the molecules are perfectly elastic, that is, when the collision of the molecules takes place, they bounce off each other with no gain or loss of energy. No repulsive or attractive forces take part at the time of collisions, so energy is conserved.
Answer:
Density
Explanation:
Density is a measure of how much mass is contained in a given volume
Answer:
d)Cells 1 and 2
Explanation:
In a voltaic cell, oxidation occurs at the anode and reduction occurs at the cathode. The half cell that function as anode or cathode in a voltaic cell depends strictly on the reduction potential of the metal ion/metal system in that half cell.
Examining the reduction potentials of the various metal ion/metal systems in the three half cells;
Cu= +0.34 V
Ni= -0.25 V
Zn= -0.76 V
Fe(Fe2+)= -0.44 V
Hence only Zn2+ has a more negative reduction potential than Fe2+. The more negative the reduction potential, the greater the tendency of the system to function as the anode. Thus iron half cell will function as anode in cells 1&2 as explained in the argument above.
Answer:
If some of the bromine/methylene chloride mixture spills on you, what actions should you take? (choose all that apply)
a. Remove your gloves and/or lab coat if any spilled
b. Wash any affected skin with plenty of water
c. If it got in your eyes, rinse them at the eye wash for 15 minutes
d. Blot the mixture off your skin with a paper towel
e. Alert your TA
The correct answers are
a., b., c. and e.
Explanation:
Bromine is corrosive and it is a strong oxidizing agent while dichloromethane also known as methylene chloride is carcinogenic, easy to inhale as is is very volatile and can cause chemical burns when it contacts the skin
The required actions are
a. Remove your gloves and/or lab coat if any spilled on them
b. Wash any affected skin with plenty of water so as to completely remove any residue and possible reduce the effect by diluting any remaining trace left
c. If it got in your eyes, rinse them at the eye wash for 15 minutes to properly clear out all possible remnants in the eye
e. Alert your TA
