A positively charged nucleus with two protons and two neutrons hope this helps :)
Answer:
0.879 mg
Explanation:
To solve this problem we need to use the definition of ppm:
- ppm = μg solute / g solution
With the above information in mind we can calculate the micrograms of lead using the concentration (13.97 ppm) and mass of solution (62.9 g):
- μg lead = 13.97 ppm * 62.9 g
Finally we convert μg to mg:
- 878.713 μg *
= 0.879 mg of lead
Alkali metals (metals ) group 1 - properties are ● they are good conductors of heat
● luster (shiny)
● malleable (can be broken down into thin sheets)
● ductile
●lose electrons to form (+) ions
<span>Ammonia NH3 , have a severe electron density on the nitrogen atom (unshared electrons) so it truly is a exceptionally electron donor , whilst water and ammonia mixed NH4+ ion , OH- frormed in accordance to the donation of electrons of ammonia to the proton of water , and dative bond formed .</span>
Sodium is an electron lender since it only needs to get rid of one electron to have a completed valence electron shell and therefore has a low electronegativity.
I hope this helps. let me know if anything is unclear.
