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sergey [27]
3 years ago
12

PLEASE HELP FIRST GETS BRAINLIEST

Chemistry
1 answer:
Dmitry [639]3 years ago
7 0
I think honestly think it’s b.
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Calculate the frequency of radiation with a wavelength of 1.08 x 10^-6 m. simple explanation please​
pishuonlain [190]
C = vf
c stands for the speed of waves (which is a constant that is 3 x 10^8)
v stands for the wavelength (which is given)
f stands for frequency (what we are solving for)
3 x 10^8 = (1.08 x 10^-6)f
Divide both sides by the given wavelength
f = 2.78 * 10^14 seconds
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3 years ago
Tell why small droplets of water on an oily surface are almost spherical.
nlexa [21]

Explanation:

When the water droplets are placed in oily surface, oil being non-polar, thus there will not be adhesive force between water and oil.

Thus, surface tension is the factor which is responsible for shape of the water droplets to be spherical. The water molecules are pulled into the spherical shape by the action of the cohesive forces which is acting on the surface layer. As, the medium is totally different outside, the water molecules tend to get the minimum area and thus, forming spherical droplets.

5 0
3 years ago
The number of protons + number of neutrons is<br> equal to the
max2010maxim [7]

Answer: mass

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5 0
3 years ago
What do plants do that requires Energy?
Kruka [31]

Answer:

Photosynthesis

Explanation:

Photosynthesis uses energy from light to convert water and carbon dioxide molecules into glucose (sugar molecule) and oxygen. The oxygen is released, or “exhaled”, from leaves while the energy contained within glucose molecules is used throughout the plant for growth, flower formation, and fruit development.

7 0
3 years ago
How many grams are there in 3.5 moles of H20
aksik [14]
Molar mass H₂O = 18.0 g/mol

1 mol ----- 18.0 g 
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Mass ( H₂O) = 3.5 x 18.0 / 1

=> 63.0 g

hope this helps!
8 0
4 years ago
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