bonjours ma question est sin x=1/7 comment trouver les valeurs de x plz help my
Percentage yield=(actual yield/theoretical yield) x 100%
= (45/50) x 100%
= 90%
Add up the molar mass of Mercury Oxide, and then divide the molar mass of Oxygen by the molar mass of the compound.
So...
mm of Hg + mm of O= 200.59g + 16g= 217g
16g/217g = .0737... x 100 = 7.37%
The elements in group 7, which fluorine is in also, would have similar properties due to the valence electrons and the configuration. <span />
Answer : The amount of heat needed is, 1188 J
Explanation :
Formula used :
where,
q = heat needed = ?
m = mass of copper = 55 g
c = specific heat capacity of copper = 
= initial temperature = 
= final temperature = 
Now put all the given values in the above formula, we get:
Thus, the amount of heat needed is, 1188 J
