You cannot create something from nothing and similarly you cannot create less from more, if you didn't balance an equation that needs to be balanced, your product might end up equalling more or less than the total mass of the two elements combined. Which is impossible
Answer:
The farther it is the weaker the forces gets.
Explanation:
Take a magnet as a example, if it's close it will attract, but if it's far away then it cannot attract.
Answer:
chemical change
Explanation:
In chemical change , considerable amount of heat is used , hence a change in substance formed
Answer:
The value of Ka
It is a weak acid
Explanation:
From the question we are told that
The concentration of
The concentration of
The concentration of
Generally the equation for the ionic dissociation of is
The equilibrium constant is mathematically represented as
Substituting values since all value of concentration are at equilibrium
Since the value of is less than 1 it show that in water it dose not completely
disassociated so it an acid that is weak
Answer:
12.5 moles
Explanation:
Given parameters:
Number of moles of FeS = 12.5moles
Unknown:
Number of moles of sulfur needed = ?
Solution:
We have to solve from the known to the unknown using a balanced chemical equation at first.
The balanced chemical equation for this reaction is:
Fe + S → FeS
The reaction is made possible when iron is heated in the presence of sulfur.
we see that;
1 mole of sulfur produced 1 mole of FeS
x mole of sulfur will produce 12.5moles of iron sulfide;
Therefore, 12.5 moles of sulfur will produce that given amount of iron sulfide.