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3 years ago

14

Why the piece of sodium chloride is hard than sodium metal?

1 answer:

Delvig [45]3 years ago

5 0

Sodium chloride is salt, it is an ionic substance thus there is no covalent bonds between the substances only ionic. sodium metal is more malleable but has a higher melting point and doesn't disolve for reasons I think is above your level, the point is sodium is harder

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An ate or ite at the end of a compound name usually indicates that the compound contains___________.

Ymorist [56]

Answer:

D

Explanation:

According to IUPAC nomenclature, a negative polyatomic ion has its name ending in 'ate' or 'ite'

As in carbonate (CO3^2-)

Arsenite (AsO3-)

3 0

3 years ago

Read 2 more answers

Calculate the period when the frequency is 50Hz.

liraira [26]

Answer:

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2 years ago

You observe 2 waves named alpha and beta. The alpha wave has a frequency of 5 Hz and the beta wave has a frequency of 2 Hz. Base

MAVERICK [17]

Answer:

shorter wavelength = alpha wave

Explanation:

Given that,

The alpha wave has a frequency of 5 Hz and the beta wave has a frequency of 2 Hz.

We need to compare the wavelengths of these two waves.

For alpha wave,

$\lambda_1=\dfrac{c}{f_1}\\\\\lambda_1=\dfrac{3\times 10^8}{5}\\\\=6\times 10^7\ m$

For beta wave,

$\lambda_2=\dfrac{c}{f_2}\\\\\lambda_2=\dfrac{3\times 10^8}{2}\\\\=15\times 10^7\ m$

From the above calculations, we find that the wavelength of the alpha wave is shorter than the wavelength of the beta wave.

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3 years ago

Which of the following is an expression of Charles's law?

HACTEHA [7]

Answer:

C.

Explanation:

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3 years ago

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Gwar [14]

Answer:

A

Explanation:

nitrogen has the similar properties because carbon is the opposite of oxygen

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3 years ago