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Helen [10]
2 years ago
10

3. A wave has y frequency of 100 Hz and a speed of 50 m/s. What is the wavelength?

Chemistry
1 answer:
strojnjashka [21]2 years ago
5 0

Answer:

0.5 m

Explanation:

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An open flask sitting in a lab refrigerator looks empty, but it is actually filled with a mixture of gases called air. If the fl
ira [324]

Answer:

9.39 × 10²² molecules

Explanation:

We can find the moles of gases (n) using the ideal gas equation.

P . V = n . R . T

where,

P is the pressure (standard pressure = 1 atm)

V is the volume

R is the ideal gas constant

T is the absolute temperature (standard temperature = 273.15 K)

n=\frac{P.V}{R.T} =\frac{1atm.3.50L}{(0.08206atm.L/mol.K).273.15K} =0.156mol

There are 6.02 × 10²³ molecules in 1 mol (Avogadro's number). Then,

0.156mol.\frac{6.02\times10^{23}molecules}{mol} =9.39\times10^{22}molecules

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3 years ago
What do you mean by chemical reaction ?​
kherson [118]

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6 0
3 years ago
all of the following electromagnetic waves possess high energy that will damage the human body if overexposed, except _____. ult
Marrrta [24]
We use radiowaves all the time because they are harmless.  (as far as we know, although bees are dying and know one knows why, perhaps all the waves we use do have a negative effect)
Can I get a brainliest, please?
3 0
3 years ago
Which of the following observations indicates that an object is falling at terminal velocity?
spayn [35]
I believe that's is answer C because your ask about and increasment on the velocity in this observation
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How many covalent bonds are in a nitrogen molecule?
makvit [3.9K]
3 covalent bonds (there are 2 electrons in the first orbital and 5 in the second. You still have room for three more)
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