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2 years ago

Which statement best describles how the remote control communicates with the television to change the volume of th sound

Chemistry

1 answer:

storchak [24]2 years ago

7 0

Answer:

Following are the statement to this question:

Explanation:

The opinions were missing in this problem, which is why its solution can be described as follows:

The given statement better explains why the remote control communicates only with television to change the volume of sound because the Low energy has long waves and higher energy has shorter waves. Its remote control provides low energy radiation to both the light detector on the front of a TV, and it will be the only source for this type of radiation with less power and more than microwaves than visible light. When an object is not sufficiently hot to emit infrared radiation, a bulk of its power is infrared.

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For 2,663 kg of a compound with the formula Al(SO), determine the following quantities (4 pts each); a) The number of moles of t

Nastasia [14]

Answer:

a) 35.485 moles of Al(SO)

b) 35.485 moles of S atoms

c) $2.136197(10^{25})$ Al atoms

d) 567.723 g of O

Explanation:

Let's define the following terms :

1 mol = $6.02.(10^{23})$ elemental units

For example :

1 mol of oxygen atoms = $6.02.(10^{23})$ oxygen atoms

Now, our compound has the following formula

Al(SO)

Where Al is aluminium

S is sulfur

And O is oxygen

All the subscripts are 1 so we can say the following :

1 molecule of Al(SO) has 1 atom of Al , 1 atom of S and 1 atom of O

In terms of moles :

1 mol of Al(SO) has 1 mol of Al , 1 mol of S and 1 mol of O

The molar masses of Al, S and O are

$molarmass_{(Al)}=26.982\frac{g}{mol}$

$molarmass_{(S)}=32.065 \frac{g}{mol}$

$molarmass_{(O)}=15.999\frac{g}{mol}$

If we sum all the molar masses = $(26.982+32.065+15.999)\frac{g}{mol}=75.046\frac{g}{mol}$

Finally, 75.046 g of Al(S0) is 1 mol of Al(SO) which contains 26.982 g of Al, 32.065 g of S and 15.999 g of O.

1 mol of Al(SO) contains 1 mol of Al, 1 mol of S and 1 mol of O.

Now we can calculate a),b),c) and d)

For a)

$2.663 kg=2663g$

75.046 g of Al(SO) = 1 mol of Al(SO)

2663 g of Al(SO) = x

$x=\frac{2663}{75.046}mol=35.485 mol$

2.663 kg of Al(SO) contains 35.485 moles of Al(SO)

b) and c) 1 mol of Al(SO) molecules contains 1 mol of S atoms and 1 mol of Al atoms

We have 35.485 moles of Al(SO) molecules so

We have 35.485 moles of S atoms

And 35.485 moles of Al atoms

If 1 mol = $6.02(10^{23})$

35.485 moles of Al have $(35.485)(6.02)(10^{23})=2.136197(10^{25})$ Al atoms

d) 75.046 g of Al(SO) contains 15.999 g of O

2663 g of Al(SO) contains x g of O

$x=\frac{(2663).(15.999)}{75.046} g$

x = 567.723 g of O

6 0

3 years ago

Look at the above table.

MariettaO [177]

Answer:

1. A. 0

2. B. 7

3. C. 4

Explanation:

1. charge is equal to the number of protons minus the number of electrons!

2. neutrons is equal to mass number minus atomic number!

3. valence electrons equal 4!

Hope this helped you! :)

7 0

2 years ago

Which is a force that holds atoms together?

polet [3.4K]

The answer is going to be “chemical bond” hope you have a good day and hope this helps

7 0

2 years ago

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Why is gold found in the pure state in nature?

Shkiper50 [21]

A native metal is any metal that is found in its metallic form, either pure or as an alloy, in nature. ... Over geological time scales, very few metals can resist natural weathering processes ! hope i helped!

5 0

3 years ago

What is the structural formula of pentyl alcohol?

Tema [17]

C5H120<hope this helps

7 0

3 years ago