Answer:
what was the investigation ???
Yo sup??
Heat produced per gram of reactant=13.1 KJ
.=13100 J
Actual heart produced=1850 J
By applying unitary method we get the weight of reactant to be x
x=1850/13100
=0.141 gm
Hope this helps
Mass of Potassium : 116.1 g
<h3>Further explanation</h3>
Given
38.7% potassium in Potassium nitrate
300 g of KNO3
Required
mass of potassium
Solution
%mass of element = (mass of an element in 1 mole of compound/mass of 1 mole compound) x 100%
mass of K(potassium) in 300 g KNO3 :
= 38.7% x 300 g
= 116.1 g
In writing the formula for a salt the symbol of the cation is first then the anion is written second .
Answer:
6 of the 26 electrons.
Explanation:
The least electronegative element is nitrogen, which, in all cases of this, will and can be the central atom. Now, all you have to do is make bonds between N and three F. This has it use up 6 of the 26 electrons. Have a nice friday, and I hope this helps!