Answer:
0.5
L solution
⋅
required molarity
2.5 moles NaCl
1
L solution
=
1.25 moles NaCl
Now, to convert this to grams of sodium chloride, you must use the mass of
1
mole of this compound as a conversion factor. The mass of
1
mole of sodium chloride is given by its molar mass
1.25
moles NaCl
⋅
58.44 g
1
mole NaCl
=
73 g
−−−−
Explanation: if this is wrong i am very sorry
Answer:
Since energy can’t be created or destroyed, and water loses potential energy when it freezes to form ice. The energy remains electrical but then changes to kinetic when Enough energy is released.
Explanation:
Answer: -1835 kJ
Explanation:
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to Hess’s law, the chemical equation can be treated as algebraic expressions and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
(1)
(2)
Net chemical equation:
(3)
Multiplying equation (1) by 4, and reversing we get
(4)
Adding (2) and (4)
Thus enthaply change for the reaction is -1835 kJ.
Salts is the correct awnser
Answer:
Leon
Explanation: all take up space and will have a mass to it.