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Semenov [28]
4 years ago
15

Why should you clean up after every investigation

Chemistry
2 answers:
ella [17]4 years ago
8 0
<span>Why should you clean up after every investigation?

Simple, it is for safety ....and a clean classroom/lab</span>
8_murik_8 [283]4 years ago
6 0
You should clean up after every investigation because if you leave a mess, maybe another detective will come in and get lost because of the mess you left.
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10.
Ugo [173]

Answer:

Density, \rho=24.68\ g/cm^3

Explanation:

Mass of a marble slab is 38.6 kg 38600 grams

The dimensions of the marble is 17 cm×23 cm×4 cm

We need to find its density. Mass per unit volume equals density. So,

\rho=\dfrac{m}{V}\\\\\rho=\dfrac{m}{lbh}\\\\\rho=\dfrac{38600\ g}{(17\times 23\times 4)\ cm^3}\\\\\rho=24.68\ g/cm^3

So, the density of the marble slab is 24.68\ g/cm^3

5 0
4 years ago
Be sure to answer all parts. Consider both 5-methyl-1,3-cyclopentadiene (A) and 7-methyl-1,3,5-cycloheptatriene (B). Which label
LuckyWell [14K]
I don’t have a picture but I can describe it to you.

The hydrogen that is attached at the tertiary position on the heptatriene (at the 7-methyl) would be very acidic, as removal would leave a positive charge that could be moved throughout the ring through resonance. This would mean that the three double bonds would be participating in resonance, and the deprotonated structure would be aromatic, thus making this favorable.

The hydrogen that is attached at the tertiary position on the pentadiene (5-methyl) would NOT be acidic, as removal would cause an antiaromatic structure.

Any other hydrogens would NOT be acidic. Those vinylic to their respective double bonds would seriously destabilize the double bond if removed, and hydrogens attached to the methyl group jutting off the ring have no incentive to leave the carbon.

Hope this helps!
6 0
3 years ago
2)a dish contains a blackish-yellow powder.when a magnet is moved over it black particles iron get stuck to the magnet and only
Andrei [34K]
A element mixture (key word: mixture) due to the mixture containing 2 different types of elements it can be said that it’s highly likely that the mixture was not a compound but instead of a mixture due to mixture meaning more than 1 material. Hopes this help!
6 0
2 years ago
The main group elements do not include which elements?
kaheart [24]

Answer:

Transition metals

Explanation:

Columns one and two are part of the main group along with columns 13 through 18

8 0
3 years ago
Can someone help me answer this question??
Lubov Fominskaja [6]
Kg=24,590550 g=24590,550 mg=24590550
8 0
4 years ago
Read 2 more answers
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