Answer:
1.31M
Explanation:
Based on the reaction, 1 mole of Zn produce 1 mole of ZnCl₂. As the reaction occurs completely, the moles of Zn added = Moles of ZnCl₂ produced. To find molarity we need the moles of ZnCl₂ and the volume of the solution in liters:
<em>Moles Zn = Moles ZnCl₂ -Molar mass Zn: 65.38g/mol-:</em>
15g * (1mol / 65.38g) = 0.23 moles of ZnCl₂
<em>Volume in Liters:</em>
175mL * (1L / 1000mL) = 0.175L
The molarity is:
0.23moles / 0.175L
<h3>1.31M</h3>
Answer:
H
Explanation:
If the energy content in the reactants is higher than the products, that means that the reaction must be giving away energy. So, in other words, chemical energy from the reactants must be released as heat.
Erosion can be created from all of them (All of the above)
Answer:
Hydrogen concentration = 7.94×10^-3 M
Explanation:
from potenz Hydrogen ( pH ) definition
pH = -log[H+]
2.1 = -log[H+]
2.1/-log = -log[H+]/-log
10^-2.1 = [H+]
[H+] = 7.94×10^-3M
