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wolverine [178]

3 years ago

11

Just number 9 I need help !!!!

1 answer:

Deffense [45]3 years ago

8 0

Magnesium is in group 2 while sulfur is in group 6.

the group number determines the number of valence electrons.

Metals gives lose electrons (mg)
Non Metals gain electrons (s)

answer: Magnesium gives 2 electrons to sulfur.

Mg is now 2.8
Sulfur is 2.8.8

cuz ionic bonding

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What is the wavelength of the third harmonic in a 4.5-m-long pipe that is closed at one end?

lisov135 [29]

Answer:

Wavelength of sound in the pipe is 6.0 m

Explanation:

As we know that closed pipe is given to us so here at open end it will form antinode while at closed end it will form Node

Here we know that in closed pipes on odd harmonics will exist

so here for third harmonic we have

$L = \frac{\lambda}{4} + \frac{\lambda}{2}$

where L = length of the pipe

so we have

$4.5 = \frac{3\lambda}{4}$

$\lambda = 6.0 m$

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8 0

4 years ago

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choli [55]

Answer:

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Scorpion4ik [409]

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