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laila [671]
2 years ago
5

What is the velocity of a wave with a wavelength of 0.03 m and a frequency of

Chemistry
2 answers:
Scrat [10]2 years ago
8 0

Answer:

C. 3.6 m/s

Explanation:

I just took a test on a-pe-x and it was correct! :)

Anastasy [175]2 years ago
6 0

Answer:

A

Explanation:

Got a calculation of 8.05297

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How does water move on its own concentration gradient?
kifflom [539]
Are you speaking of a density gradient, in which a more concentrated solution moves below a less concentrated solution?

In that case, the more concentrated solution has the greater density, and it will gradually sink below the less concentrated solution. 

In the same way, a stone will sink in water, which is less dense than the stone.
7 0
3 years ago
Read 2 more answers
1.42 mol sample of neon gas at a temperature of 13.0 °C is found to occupy a volume of 25.5 liters. The pressure of this gas sam
Dima020 [189]

Answer: 996 mmHg

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at NTP, weighs equal to the molecular mass and contains avogadro's number 6.023\times 10^{23} of particles.

According to the ideal gas equation:

PV=nRT

P = Pressure of the gas = ?

V= Volume of the gas = 25.5 L

T= Temperature of the gas = 13°C = (273+13) K  = 286K

R= Gas constant = 0.0821 atmL/K mol

n=  moles of gas= 1.42

P=\frac{nRT}{V}=\frac{1.42\times 0.0821\times 286}{25.5}=1.31atm=996mmHg      (760mmHg=1atm)

Thus pressure of this gas sample is 996 mm Hg.

3 0
3 years ago
How many electrons does an element have if its atomic number is 20
olga55 [171]

Answer:

20 electrons

A neutral atom with atomic number 20 will have 20 electrons.

The atomic number is, by definiton, the number of protons in an atom's nucleus but for a neutral atom it's also equal to the number of electrons. Each element has a different, unique number of protons that determines its identity.

Explanation:

6 0
2 years ago
Liquid nitrogen is cold and can be used to cool objects to -196°C. If you put the bottle of warm air in liquid nitrogen at this
vampirchik [111]

Answer:

Explanation:

It depends on how this is done. If you raise the pressure, the nitrogen will disappear (liquify) and all that will be left will be the 21 % oxygen and the 1% argon.

The process is very complicated because the boiling point of nitrogen keeps on changing. The boiling point is unstable.

6 0
2 years ago
Which has more thermal energy, 500g of ice or 500g of steam? explain your answer.
RUDIKE [14]
Steam because steam comes from water which the energy makes it into steam
7 0
3 years ago
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