Answer:
CO2 + MgO
Explanation:
We want the number of each element on the Reactants (Left side) to be equal to the number of each element on the Product side (Right side).
A should be the answer because the more you test an experiment the more data you have to rely on changing the experiment would cause you to have different outcomes making the results different and unreliable so B, C, and D is not going to be the answer Hope this helps
Answer:
Explanation:
NaCl sodium Chloride as ordinary salt
Naf sodium fluoride is used in toothpaste which we use every day
Answer : At temperatures greater than this reaction is spontaneous under standard conditions.
Explanation : Given,
= 131.3 KJ/mole = 131300 J/mole
= 127.6 J/mole.K
Gibbs–Helmholtz equation is :
As per question the reaction is spontaneous that means the value of is negative or we can say that the value of is less than zero.
The above expression will be:
Now put all the given values in this expression, we get :
Therefore, at temperatures greater than this reaction is spontaneous under standard conditions.
Answer:
to balance a chemical equation the amount of reactants must be equal to the amount of products, an easy way to balance it is write out how many you have on both sides
Explanation:
if you're dealing with molecular equations you would do it like this:
eg. A double displacement reaction between magnesium hydroxide and hydrochloric acid
Mg(OH)2 (aq) + HCl (aq) = MgCl2 (aq) + H2O (l)
Mg-1. Mg-1
O-2. O-1 *2
H-2. H-2
Cl-1 *2 Cl-2
Balanced eq: Mg(OH)2 (aq) + 2HCl (aq) = MgCl2 (aq) + 2H2O (l)
if you're dealing with ionic equations , you would deal with charges and you would need to cancel out spectator ions, like this:
Mg^2+(aq) + 2OH^-(aq) + 2H^+ (aq) + 2Cl^- (aq) = Mg ^2+(aq)+ 2Cl^- (aq) + H20 (l)
the spectator ions are the ones that are the same on both sides which would be the Mg^2+ and the 2Cl^- so when writing the net ionic equation, it would just be:
2OH^-(aq) + 2H^+ (aq) = + H20 (l)