Answer:
D
Explanation:
Firstly in deciding whether the meniscus of a liquid in a glass capillary tube will be convex or concave, we need to understand 2 forces that are in play here. These are the adhesive and cohesive forces.
The cohesive forces are the forces between the molecules present in the liquid. It can be seen as the force of attraction between the molecules of the liquid
The adhesive forces are the forces between the molecules of the liquid and the molecules of the glass.
The reason why mercury has a convex meniscus is because the cohesive forces between the mercury molecules is greater than the adhesive forces between the molecules of the glass and molecules of mercury.
What we are saying in essence is that the intramolecular force of attraction between mercury molecules is greater than the intermolecular force of attraction between the molecules of the glass and water.
Hence we say mercury does not wet glass as the cohesive forces of attraction are greater than the adhesive attraction forces
Molar mass of helium is 4.00<span> g/mol.</span>
Mole (mol): The number of particles (atoms or molecules) in a.
sample of element or compound with a mass in grams equal to the.
<span>atomic (or molecular) weight.</span>
Question one is a,getting energy.
Question two is c, from scavenging.
Deposition<span> is a </span>thermodynamic process<span>, a </span>phase transition<span> in which </span>gas<span> transforms into </span>solid<span> without passing through the </span>liquid phase<span>. The reverse of deposition is </span>sublimation sublimation is cooling hope this helps!!
it has less tightly bound electrons, is able to lose electron easily as compare to metal B at it has 4 unpaired electron in 3d sub-shell.
