You want to prepare a solution with a concentration of 200.0 μm from a stock solution with a concentration of 500.0 mm . at your disposal you have 5-ml and 10-ml transfer pipets and volumetric flasks of sizes 100, 250, 500, and 1000 ml. which of the following serial dilutions will give you the 200.0 μm solution. produce a 200 μm solutiondilute 5 ml of the stock solution upto 500 ml. then dilute 10 ml of them upto 250 mldilute 5 ml of the stock solution upto 100 ml. then dilute 10 ml of them upto 1000 mldilute 10 ml of the stock solution upto 100 ml. then dilute 5 ml of them upto 1000 mldoes not produce a 200 μm solutiondilute 5 ml of the stock solution upto 250 ml. then dilute 10 ml of them upto 500 mldilute 10 ml of the stock solution upto 250 ml. then dilute 10 ml of them upto 1000 ml

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >