Molecules are different from atoms because they
2 answers:
Answer: Option (D) is the correct answer.
Explanation:
Molecules are defined as the substances which contain same type of elements which are chemically combined to each other.
For example, is a molecule which contains two same atoms that is, chlorine atoms.
In this molecule, the atoms are chemically combined together due to sharing of electrons. Hence, they tend to form covalent bonds.
Therefore, we can conclude that molecules are different from atoms because they contain chemical bonds.
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Answer:
Explanation:
Given that:
The energy of the photon = 2.3 eV
Energy in eV can be converted to energy in J as:
1 eV = 1.60 × 10⁻¹⁹ J
So, Energy =
Considering
Where,
h is Plank's constant having value
c is the speed of light having value
is the wavelength of the light being bombarded
Thus,
Also,
1 m = 10⁻⁹ nm
So,
Answer:
The answer to your question is 71.22 g
Explanation:
Data
Density = 19.3 g/cm³
Volume = 0.00369
mass = ?
Formula
Density =
Solve for mass
mass = density x volume
Process
1.- Convert volume from liters to cubic centimeters
1 l ---------------- 1000 cm³
0.00369l --------- x
x = (0.00369 x 1000 ) / 1
x = 3.69 cm³
2.- Substitution
mass = 19.3 x 3.69
3.- Simplification and result
mass = 71.22 g