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max2010maxim [7]
4 years ago
14

The word atom means invisible?

Chemistry
1 answer:
horsena [70]4 years ago
6 0
The word atom<span> is derived from the Greek </span><span> 'atomos' - </span><span>“indivisible.”
But the word 'atom' itself just means the smallest particle, not necessarily invisible. 
</span><span>
</span>
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dezoksy [38]
Number 18 is correct, number 19 is the particles speed up and the substance expands, and number 20 is decrease in volume
8 0
3 years ago
Give the name of the following molecule. A compound with a total of 10 carbons with one double bond and the rest single bonds. T
soldier1979 [14.2K]
Answer:
           The IUPAC name of compound is 6-Ethyl-2-Octene.

Explanation:

First of all draw a straight chain of 8 carbon atoms.

Make a double bond between carbon number 6 and 7 numbering from left.

Add ethyl group at position 3 starting from left.

The structure sketched is attached below,

According to rules the longest chain containing a double bond is selected. Numbering is started from the end to which double bond is nearer. So, in our case the double bond starts at carbon 2, hence parent name of compound is 2-Octene. Then the substituent at position 6 is named.

5 0
3 years ago
How many molecules are in 165 g of carbon dioxide?
Svet_ta [14]
М(СО₂)=165 г

н(СО₂)=м(углекислого газа)/М(СО₂)

Н=Nₐ*м(углекислого газа)/М(СО₂)

Н=6.022*1023 * 165/44.01=2.258*10²⁴
6 0
3 years ago
Read 2 more answers
A substance that contains more hydroxide ions than hydronium ions in solution could have which pH value?
Hunter-Best [27]
Hydronium ions are basically H+ ions.
So if [OH-]>[H+]
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 and basic substances a pH>7.
Therefore a possible pH value would be 10.
6 0
3 years ago
Bacteria and virus are micro organisms why​
wel

Answer:

because they cannot be seen by our naked eyes to make them visible we must use microscope.

4 0
3 years ago
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