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igor_vitrenko [27]
3 years ago
5

Each graph below represents a different type of electromagnetic wave. Which graph most likely illustrates radio waves?

Chemistry
1 answer:
xxTIMURxx [149]3 years ago
4 0

Answer: the answer is c

Explanation:

I just did the test

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A 4 L sample of gas at 298 K and 2 atm contains 0.250 mol of gas. If we add another 0.250 mol of gas at the same pressure and te
andrey2020 [161]

Answer:

V_2=8L

Explanation:

Hello there!

In this case, considering the Avogadro's gas law, which treats the volume and moles in a directly proportional way via:

\frac{V_1}{n_1}=\frac{V_2}{n_2}

Which can be solved for the final volume, V2, as shown below:

V_2=\frac{V_1n_2}{n_1}

Thus, by plugging in the given data, we obtain:

V_2=\frac{4L*(0.250mol+0.250mol)}{0.250mol}\\\\V_2=8L

Regards!

4 0
2 years ago
Today, we have seven major continents. However, most geologists don't think it was like this 200 million years ago. They think t
Oksanka [162]
Yeah this is option A one supercontinent
basically a long time ago we would have lived on pangea

Eventually this would split into two and we would get Gondwana and also Laurasia, so thechnically option two would be a possible choice but option A is the most possible choice.
5 0
3 years ago
Read 2 more answers
Which of the following is the proper scientific notation for the number 18,200?
satela [25.4K]
1.82 x 10^4 i believe
8 0
3 years ago
Read 2 more answers
What is the density of water if you have 50.0 grams of water and a volume of 50.0 millimeters
Gnom [1K]

Answer:

\boxed {\tt 1.0 \ g/mL}

Explanation:

Density can be found by dividing the mass by the volume.

d=\frac{m}{v}

The mass of the water is 50.0 grams.

The volume of the water is 50.0 milliliters.

m= 50.0\ g \\v=50.0 \ mL

Substitute the values into the formula.

d=\frac{50.0 \ g}{50.0 \ mL}

Divide.

d= 1.0  \ g/mL

The density of the water is 1.0 grams per milliliter. Also, remember that the density of pure water is always 1.0 g/mL or g/cm³

8 0
3 years ago
How many atoms are there in 5.70 mol of Mg
mixer [17]

6.0223 x 10^23 atoms

8 0
3 years ago
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