Calculate ΔE, if q= 0.764 kJ and w= -880 J .
1 answer:
The change in internal energy of the system is 1644 Joules.
<u>Given the following data:</u>
- Heat added, Q = 0.764 kJ
- Work done = -880 Joules
To find the change in internal energy of the system, we would apply the First Law of Thermodynamics.
Mathematically, the First Law of Thermodynamics is given by the formula:
Substituting the values, we have:
<em>Change in internal energy, </em><em> = </em><em>1644 Joules.</em>
Therefore, the change in internal energy of the system is 1644 Joules.
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Answer:
The value of the heat capacity of the Calorimeter = 54.4
Explanation:
Given data
Heat added Q = 4.168 KJ = 4168 J
Mass of water = 75.40 gm
Temperature change = ΔT = 35.82 - 24.58 = 11.24 ° c
From the given condition
Q = ΔT +
ΔT
Put all the values in above equation we get
4168 = 75.70 × 4.18 × 11.24 + × 11.24
611.37 = × 11.24
= 54.4
This is the value of the heat capacity of the Calorimeter.
The number of C atoms in 0.524 moles of C is 3.15 atoms.
The number of molecules in 9.87 moles
is 59.43 molecules.
The moles of Fe in 1.40 x atoms of Fe is 0.23 x
The moles of in 2.30x
molecules of
is 3.81.
A mole is defined as 6.02214076 × of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
A. The number of C atoms in 0.524 mole of C:
6.02214076 × x 0.524 mole
3.155601758 atoms =3.155 atoms
B. The number of molecules in 9.87 moles of
:
6.02214076 × x 9.87
59.4385293 molecules= 59.43 molecules
C. The moles of Fe in 1.40 x atoms of Fe:
1.40 x ÷ 6.02214076 ×
0.2324754694 x moles.
0.23 x moles.
D. The moles of in 2.30x
molecules of
:
2.30x ÷ 6.02214076 ×
3.819239854 moles=3.81 moles
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