All categories

3 years ago

!!DOUBLE QUESTION! HURRY! 50 PTS AND BRAINLIEST!!

Chemistry

1 answer:

Oksana_A [137]3 years ago

7 0

So basically the wavelength times the frequency of an electromagnetic wave equals the speed of light.

FYI,

λ

is the Greek letter lambda , and

ν

is the Greek letter nu (it is not the same as a v).

Answer:

Type of Radiation Frequency Range (Hz) Wavelength Range

gamma-rays 1020 - 1024 < 10-12 m

x-rays 1017 - 1020 1 nm - 1 pm

ultraviolet 1015 - 1017 400 nm - 1 nm

visible 4 - 7.5*1014 750 nm - 400 nm

near-infrared 1*1014 - 4*1014 2.5 μm - 750 nm

infrared 1013 - 1014 25 μm - 2.5 μm

microwaves 3*1011 - 1013 1 mm - 25 μm

radio waves < 3*1011 > 1 mm

(Ultraviolet I believe, not sure)

You might be interested in

A white crystalline salt conducts electricity when it is melted and when it dissolves in water.

sergeinik [125]

Answer: Option (a) is the correct answer.

Explanation:

Ionic salts are defined as the salts which tend to contain ionic bonds as there occurs transfer of electrons between its combining atoms.

So, when an ionic salt melts or it is dissolved in water then it will dissociate into its respective ions and as electricity is the flow of electrons or ions. Hence, this salt is then able to conduct electricity.

As covalent compounds are insoluble in water so, they do no dissociate into ions. Hence, they do not conduct electricity.

Similarly, metallic and network solids do not dissociate into ions either when melted or dissolved in water. Therefore, they also do not conduct electricity.

Thus, we can conclude that when a white crystalline salt conducts electricity when it is melted and when it dissolves in water then this bond is of ionic type.

7 0

3 years ago

Convert 0.0052 meters to millimeters

amm1812

Answer:

5.2 millimeters

Explanation:

hope this helps :)

5 0

3 years ago

Read 2 more answers

Two aircraft rivets, one of iron and the other of copper, are placed in a calorimeter that has an initial temperature of 10Â°c.

Dominik [7]

a) Copper is at a higher temperature, so the flow of heat will take place from copper to iron. Heat is a form of energy, which always flows from higher temperature to lower temperature.

b) To determine the actual final temperature, the heat capacity of the calorimeter must be known. A calorimeter constant refers to a constant, which quantifies the heat capacity of a calorimeter. It may be determined by using a known amount of heat to the calorimeter and measuring the corresponding change in temperature of the calorimeter.

8 0

3 years ago

Read 2 more answers

Describe the kinetic, potential and thermal energy of each state of matter?

Lerok [7]

Answer:

Particles of matter possess energy called kinetic energy.

Solid cannot be compressed, but gases are highly compressible.

The Kinetic energy of molecules of gases is very large & solids the least.

On heating a sublimable liquid, the molecules break free & escape from the surface of the solid directly into vapour.

Particles of matter move more rapidly on the application of heat

6 0

3 years ago

Determine the concentration of a solution prepared by diluting 20.0 ml of a 0.200 m rbcl to 250.0 ml. determine the concentratio

pogonyaev

When dealing with making diluted solutions from concentrated solutions, we can use the following formula
c1v1 = c2v2
where c1 and v1 are the concentration and volume of the concentrated solution respectively.
c2 and v2 are the concentration and volume of the diluted solution respectively
substituting these values in the above formula,
20 mL x 0.200 M = C x 250.0 mL
C = 0.0160 M

5 0

3 years ago