Answer:
Explanation:
To calculate the heat of reaction we need to determine:
- The heat produced
- The moles of Zn that reacted
<u>Moles of zinc (Zn)</u>
It says that the 0.103 g reacted completely, knowing that the Zn molecular weight is 65.4 g/mol:
<u>Heat released by the reaction</u>
The solution goes from 22.5 °C to 23.7°C:
<u>Heat of reaction</u>
Answer:
"An equilibrium constant expression describes the relationship among the concentrations (or partial pressures) of the substances present in a system at equilibrium" (General Chemistry). ... For this example, Ka = 2.2 x 10-4 and the initial concentration of HA, the acid in solution is 2 mol L-1.
Answer:
KOH molar mass = 39 + 16 + 1 = 56g
To make 1 L of 1M soln needs 56g KOH
To make 500mL 1M needs 56/2 = 28g
To make 500mL 0.2M needs 28 x 0.2gn:
Plant respiration , animal respiration , factory emission
