Answer ( 3 ) :
<span>conversion of matter to energy .
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hope this helps!
<span>How many moles Pb in 1 grams? The answer is 0.0048262548262548. We assume you are converting between moles Pb and gram. 1 mole is equal to 1 moles Pb, or 207.2 grams.</span>
We Know, Velocity of light = frequency * wavelength
frequency = velocity/wavelength
f = 3 * 10⁸ / 6.50 * 10⁻⁷
f = 4.61 Hertz
So, your final answer is 4.61 Hz
Hope this helps!
Answer:
See explanation
Explanation:
We know that the possession of polar bonds does not make a molecule polar. The BeCl2 molecule has Be-Cl bonds which are polar. However, the molecule is symmetrical and has a zero net dipole moment hence the molecule is nonpolar.
H2O is a polar molecule. It has polar O-H bonds. The molecule is bent and has a resultant dipole moment hence it is polar.
Ozone is a triatomic molecule which is bent in shape. This bent geometry creates an overall dipole moment in the molecule, hence the molecule is polar.
Answer:
7.15g/cm³
Explanation:
To solve this question we must know that a body-centered cubic unit cell contains 2 atoms.
The volume of the unit cell is:
289pm = (289x10⁻¹²m)³ =
2.414x10⁻²⁹m³ * (1cm³ / 1x10⁻⁶m³) = <em>2.414x10⁻²³cm³</em>
<em />
And the mass is -Molar mass Chromium = 51.9961g/mol:
2atoms * (1mol / 6.022x10²³atoms) * (51.9961g / mol) =
<em>1.727x10⁻²²g</em>
<em />
The density is:
1.727x10⁻²²g / 2.414x10⁻²³cm³ =
<h3>7.15g/cm³</h3>