The main purpose of scientific methods, is to show the variations of the topic you are doing in science and how you are proving it to be that way.
Number of moles :
500 / 180.16 => 2.775 moles
Volume = 0.72 L
M = n / V
M = 2.775 / 0.72
M = 3.85 M
hope this helps!
Molar mass HCl = 36.5 g/mol
number of moles:
mass of solute / molar mass:
9.63 / 36.5 => 0.263 moles
Volume = 1.5 L
M = n / V
M = 0.263 / 1.5
M = 0.1753 mol/L
espero ter ajudado!
Answer:
Hydrogen bond is formed only by the three highly electronegative elements- fluorine, oxygen and nitrogen.
The metal that will react is Cobalt.
The equation for the reaction is,
Co + Ni(NO3)2 → Co(NO3)2 + Ni
The above reaction is an example of Displacement Reaction. Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound.
Cobalt is more reactive than Nickle in the reactivity series so it displaces Nickle from Nickle Nitrate and forms Cobalt Nitrate.
Reactivity series is a list of metals arranged in decreasing order of their reactivity. The metals with the greatest reactivity are at the top, followed by those with the lowest reactivity. Higher-ranking metals in a series can force lower-ranking metals out of their salt solution for any two metals in the series.
To learn more about Reactivity Series visit:
brainly.com/question/14619296
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