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Alex787 [66]
3 years ago
5

Name one manufactured device or natural phenomenon that emits electromagnetic radiation in each of the following wavelengths: ra

dio, microwave, infrared, visible light, ultraviolet, X-ray, and gamma ray.
Chemistry
1 answer:
Bas_tet [7]3 years ago
7 0
Radio - Radio station transmits radio wavelength which is received by the
Radio. 
<span>
Microwaves - Microwave Oven to heat up foods. </span>

<span>IR (infrared) - TV remote Control, to transmit IR light to a sensor in the TV so it can do some functions like increasing the volume, changing the channel etc. </span>


<span>Visible light - Sunlight or Light Bulbs </span>

<span>Ultraviolet - UV Lamps for sun tan, for detecting forged money </span>

<span>X-rays - Chest X-ray machines, Backscatter Xray (body scanner in airport security)
</span>
Gamma rays - Gamma rays<span> Medical Equipment which are used to kill cancer cells, to sterilize medical </span>equipment<span> </span>
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Give 5 examples of each type of mixture.<br><br> Heterogeneous:<br><br> Homogeneous:
Kipish [7]
<span>Heterogeneous:
</span>- A salad with tomatoes and almonds
- Salt and Pepper mixed in a bowl (dry)
- A fruit bowl
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Homogeneous:
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5 0
3 years ago
Read 2 more answers
How would you prepare 100 ml of 0.4 M MgSO4 from a stock solution of 2 M MgSO4?
miss Akunina [59]
OK, so to answer this question, you will simply use the molality equation which is as follows:
<span>M1V1 = M2V2 
In the givens you have:
M1 = 2M
V1 is the unknown
M2 = 0.4M
V2 = 100 ml

</span>plug in the givens in the above equation:
<span>2 x V1 = 0.4 x 100 
</span>therefore:
V1 = 20 ml

Based on this: you should take 20 ml of the 2 M solution and make volume exactly 100 ml in a volumetric flask by diluting in water.

7 0
3 years ago
a- If an Lithium (atomic number 3) atom has a -2 charge, how many electrons does it have? b- Why do you do it this way? c- Is th
Darina [25.2K]

Answer:

5

Explanation:

A lithium atom with an atomic number of 3 and a charge of -2 will have a total number of electrons.

The atomic number is the number of protons in an atom. For a neutral atom that has not gained or lost electrons, the atomic number is the same as the number of electrons.

   neutral atom: atomic number of electrons

For neutral atom of lithium, we will have 3 electrons

Now, lithium with a charge of -2 has gained two more electrons to the original 3 this now makes it 5.

ii.

It is an anion because it is negatively charged.

Negatively charged particles are called anion.

6 0
2 years ago
Hoon2. In words, describe how the changing positions of the sun, moon, and Earthleadthe different moon phases.
zysi [14]

 

<span>As the Sun sets, the moon rises with the tide that faces the Earth fully exposed to sunlight. The moon has phases because of its orbit to Earth which causes the portion we see illuminated to change. The new moon occurs when the moon is positioned  between the earth and the sun. at full moon and third quarter or called as the half moon, it happens when the moon is at a 90 degree angle with respect to the earth and the sun. crescent refers to the moon that is less than half illuminated by the sun. gibbous refers to more than half illuminated by the sun. waxing means growing or expanding in illumination and waning means shrinking or decreasing in illumination.</span>

7 0
3 years ago
How did scientist discover that earths outer core is liquid
liberstina [14]

By studying seismic waves

Explanation:

Scientists discovered that the earth's outer core is liquid by simply studying seismic waves.

Seismic waves are elastic waves that have been used by geophysicists to study the earth's interior.

  • Interior of the earth is inaccessible due to high pressure and temperature conditions therein.
  • To study this part of the earth, an indirect method should be used.
  • Seismic waves produced during an earthquake due to their permeating nature have been used to study the interior.
  • Seismic P-waves can pass through any materials because they are longitudinal waves. They go through solids, liquids and gases.
  • S-waves can only pass through solids and not fluids.
  • On a seismograph, it was discovered that the S-waves were cut off in a part of the reading.
  • The waves re-appeared after a distance.
  • Since S-waves cannot pass through liquids, it has been hypothesized that the outer core is liquid.

learn more:

Mantle brainly.com/question/7623608

#learnwithBrainly

6 0
3 years ago
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