An object at a distance of 30 cm from a concave mirror gets its image at the same point. The focal length of the mirror is
1 answer:
The focal length of the mirror is 15 cm
From the question given above, the following data were obtained:
Object distance (u) = 30 cm
Image distance (v) = 30 cm
<h3>Focal length (f) =? </h3>The focal length of the mirror can be obtained as follow:
Therefore, the focal length of the mirror is 15 cm
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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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