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dedylja [7]
3 years ago
11

Which EMW can humans see?

Chemistry
1 answer:
Assoli18 [71]3 years ago
4 0

Answer:

visible light waves are the only electromagnetic waves we can see

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Select the following statements that are true. Select all that apply.
geniusboy [140]

Answer:

The statements which are true among these are: (a),(b) and (c) because,

(a) The simplest organic compounds which contains only carbon and hydrogen atoms are called hydrocarbons.

(b) The IUPAC naming of organic compounds have some rules for the naming of compounds, which consists of

  • Finding the longest chain present in the compound called parent chain.
  • A prefix for any substituent attach to the parent chain.

And lastly a suffix for the type of bond that molecule have.

(c) Isomers are the compound which same same molecular formula but different arrangement of molecules, due to this different arrangement they have different physical and chemical properties.

4 0
3 years ago
How many molecules are in 42.3g sample of water
Helga [31]

Answer:

The number of molecules is 1.4140*10^24 molecules

Explanation:

To know the number of molecules, we need to determine how many moles of water we have, water has molar mass of 18.015g/mol

This means that one mole of water molecules has a mass of 18.015g.

42.3g * 1 mole H2O/18.015g

= 2.3480 moles H2O

We are using avogadros number to find the number of molecules of water

2.3480 H2O * 6.022*10^ 23moles/ 1mole of H2O

That's 2.3480 multiplied by 6.022*10^23 divided by 1 mole of H2O

Number of molecules = 1.4140 *10^24 molecules

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3 years ago
If two objects have the same mass, what must be true? choose the correct answer A. They have the same volume B. They are made of
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C. Mass is kind of like a measurement of matter.
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The diagram shows a carrier wave before and after modulation. The diagram best represents which type of modulation? FM phase AM
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Answer: On Edge it's A. FM            

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a dose is an amount, a response is an action, and pollutant and toxins are substances
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