Answer with Explanation:
Ionic bond:It is that type of bond which formed between negative and positive ions.
Hydrogen bonding:Hydrogen bonding formed between hydrogen and high electronegative elements.
Dispersion force:It is weakest intermolecular force.It is temporary attractive force.When electrons of two adjacent atoms occupy positions that make the atoms temporary dipoles.
NaCl: In which Na is positive ion and Cl is negative ion.
Therefore, NaCl is ionic.
HF:F is highest electronegativ elements.
HF:Hydrogen bonding
HCl: Hydrogen bonding
:Dispersion
The density of water is a physical property.
You can measure it without changing the water to a different substance.
It is <em>not a physical change</em> because the water does not change to ice or steam.
You can observe a <em>chemical property</em> or a <em>chemical change</em> only if the water <em>changes to a different substance</em>.
The second one, vocab and definition doesn't add up
The specific heat of the iron can is determined as 0.449 J/g⁰C.
<h3>Specific heat of the iron can</h3>
The specific heat of the iron can is calculated as follows;
Q = mcΔθ
c = Q/mΔθ
where;
- Q is quantity of heat
- Δθ is change in temperature
- m is mass
c = 256/(50 x 11.4)
c = 0.449 J/g⁰C
Thus, the specific heat of the iron can is determined as 0.449 J/g⁰C.
Learn more about specific heat here: brainly.com/question/16559442
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Answer:
The wave with the wavelength of 8.82 nm have frequency of 0.340 × 10¹⁷ s⁻¹.
Explanation:
Given data:
Wavelength of x-ray = 8.82 nm
frequency of x-ray = ?
Solution:
speed = Wavelength × frequency
frequency = speed / Wavelength
c = 3 × 10⁸ m/s
f = c/ λ
f = 3 × 10⁸ m/s /8.82 × 10⁻⁹m
f = 0.340 × 10¹⁷ s⁻¹
The wave with the wavelength of 8.82 nm have frequency of 0.340 × 10¹⁷ s⁻¹.
