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Margarita [4]
2 years ago
5

A student is instructed to design a device that can allow one user to hear a voice of another surer a distance of 5 kilometers w

hich statement describes the most applicable basic design concept
Chemistry
1 answer:
Scorpion4ik [409]2 years ago
6 0

Answer:

A device designed to transmit electromagnetic waves through the air should  be developed.

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pls this is my second time asking these questions, i'm sorry, but i really need help!!! 1. what happens to atoms when there is a
dusya [7]

Answer:

the atoms of the original substances gain, lose and even share their very own electrons. write the symbols of the elements that form the compound. Write down the valency, and lastly go over valencies. This is all I got so far. I hope this helps

Explanation:

8 0
2 years ago
A sample of gas with an initial volume of 12.5 L at a pressure of 784 torr and a temperature of 295 K is compressed to a volume
Kipish [7]

Answer:

Final pressure in (atm) (P1) = 6.642 atm

Explanation:

Given:

Initial volume of gas (V) = 12.5 L

Pressure (P) = 784 torr

Temperature (T) = 295 K

Final volume (V1) = 2.04 L

Final temperature (T1) = 310 K

Find:

Final pressure in (atm) (P1) = ?

Computation:

According to combine gas law method:

\frac{PV}{T} =\frac{P1V1}{T1} \\\\\frac{(784)(12.5)}{295} =\frac{(P1)(2.04)}{310}\\\\33.22 = \frac{(P1)(2.04)}{310}\\\\P1=5,048.18877

⇒ Final pressure (P1) = 5,048.18877 torr

⇒ Final pressure in (atm) (P1) = 5,048.18877 torr / 760

⇒ Final pressure in (atm) (P1) = 6.642 atm

3 0
3 years ago
Which of the following best describes urine?
Anestetic [448]

Answer:

Homogeneous mixture.

Explanation:

On mixing with water, it dissolves completely in it, hence, being a homogenous mixture.

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em>

3 0
2 years ago
How do a strong electrolyte, weak electrolyte, and non-electrolyte differ in the number of ions each produces when dissolved in
Dmitrij [34]
Strong electrolytes  are completely ionised in solution.
Weak ones are only partially ionised.
Non electrolytes do not  form ions
3 0
3 years ago
3. Which of the following are missing from the food web shown below?
Vera_Pavlovna [14]
I assume that it is herring
5 0
2 years ago
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