Answer:
100 mL volumetric flask.
Explanation:
For preparation of any solution we generally use volumetric flask.
We will weigh the required amount of NaCl (based on calculation for 100 mL of 0.422 M NaCl) and will add this in a 100 mL volumetric flask.
There is only one mark in the volumetric flask.
So we will start adding water to it through wash bottle.
Then will continue stirring the solution to dissolve NaCl with addition of more amount of water (use funnel to add water).
Then finally we will make up the solution to 100 mL of mark.
Answer:
The ground state configuration for the negative ion of a halogen. ... A possible excited state electronic configuration. 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^1 6s^1. Its symbol is the double solid lin, // or ||, in a cell diagram.
Can you please elaborate?
Answer:
If liquid bromine is cooled to form a solid, which type of solid does it form? Brass is made by melting copper and zinc and physically mixing them. As this alloy is cooled, it forms a solid where the copper and zinc are not chemically bonded together.
Explanation:
Answer:
B. exothermic; leaving
Explanation:
The exothermic process releases heat, which causes the surrounding area to increase in temperature.
Your hand is releasing heat and makes the temperature of the ice cube increase, to where it melts.