To balance chemical equations, first determine how many of each are on each side.
MgCl2 + AgNO3 = Mg(NO3)2 + AgCl
1 Mg 1 Mg
2 Cl 1 Cl
1 Ag 1 Ag
1 NO3 2 NO3
Next, we have to get the amounts of elements to equal each other on both sides.
Since there are 2 Cl on the left side and 1 Cl on the right, I'm going to multiply the part on the right that has Cl by 2.
MgCl2 + AgNO3 = Mg(NO3)2 + 2AgCl
1 Mg 1 Mg
2 Cl 2 Cl
1 Ag 2 Ag
1 NO3 2 NO3
We are still unbalanced, since there are more Ag and NO3 on the right than the left. To get them to equal each other, I'm going to multiply the part with the Ag and NO3 on the left by 2.
MgCl2 + 2AgNO3 = Mg(NO3)2 + 2AgCl
1 Mg 1 Mg
2 Cl 2 Cl
2 Ag 2 Ag
2 NO3 2 NO3
Now the equation is balanced!
This is the website I often use to double check to make sure I've balanced correctly: http://www.webqc.org/balance.php
Answer:
The answer will be A
Explanation:
I will send a photo with it
Explanation:
The given data is as follows.
= -16.7 kJ/mol = , T = 298 K
R = 8.314 J/mol K, = ?
Relation between and is as follows.
=
Hence, putting the values into the above equation as follows.
=
=
=
= 6.740
= antilog (6.740)
= 846
Thus, we can conclude that for given values is 846.
Entropy increases in reaction 1 due to increase in the number of particles while entropy decreases in reaction 2 due to decrease in the number of particles.
Entropy refers to the degree of disorderliness in a system. The higher the entropy, the more disorderly the system is and the lower the entropy, the less disorderly the system is. We must note that entropy increases with increase in the number of particles.
In the reaction, 2 KClO3 (s)⇌2 KCl (s)+3 O2 (g), entropy increases because one of the products is a gas and the number of particles increases from left to right. In the second reaction, CoCl2 (s)+6 H2O (g)⇌CoCl2⋅6H2O, entropy decreases because the number of particles decreases.
Learn more: brainly.com/question/14281129
I think the last option is the correct answer. <span>The powder increased the hydrogen ion concentration of the solution. The said statement is the inference we can make from the situation. pH is the measure of hydrogen ions in a solution. The powder when added in the solution most likely dissociates into ions, especially hydrogen ions, thus decreasing the pH.</span>