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Veseljchak [2.6K]
3 years ago
13

What kind of tools did prehistoric people make with flint

Chemistry
1 answer:
barxatty [35]3 years ago
3 0
Spears and knives (Plz thank me if this helped)
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Explain in terms of charge distribution why a molecule of butanamide is polar
Phoenix [80]
The butanamide molecule has an asymmetrical distribution of charge.

The molecule has uneven charge distribution<span />

5 0
3 years ago
How molecular structure affects solubility?
spayn [35]

Answer:

The molecular structure affects solubility mainly biased on its polarity or bonded ions.

Explanation:

Polar molecules will better interact with the water molecules and will dissolve easier. Nonpolar molecules can dissolve if they are small enough, however they don't interact well with the polar molecules. Bonded ions, such as NaCl split into a cation Na and an anion Cl which the positive charge on the Na will be attracted to the oxygen, and the negatively charged Cl will be attracted to the positive Hydrogen.

**Remember this rule, like dissolves like, meaning nonpolar dissolves nonpolar and polar dissolves polar.

I hope this helps!

7 0
2 years ago
Why was it important to polish the copper strips and wire, the coin, and the nail in the electroplating experiment?
Ierofanga [76]

Answer:

You need to have a clean surface for contact between the solution and the material.

Explanation:

The presence of impurity on the surface of the material, and lack of surface uniformity (smoothness) can reduce the effective contact between material and solution and can interfere with the electroplating process's success.

7 0
4 years ago
A student forgot to read the label on the jar carefully and put potassium chloride in the crucible instead of potassium chlorate
lys-0071 [83]
<span>The object that was trying to be oxidized would end up being reduced. There would be no net reaction otherwise. The KCl would have simply melted after a long enough time and with the application of enough heat to the crucible.</span>
7 0
3 years ago
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When the equation BiCl3 + H2S → Bi2S3 + HCl is the coefficient of HCl will be
Alina [70]
The product Bismuth (III) sulfide (Bi_{2}S_{3}) is used as a starting material for the synthesis of other bismuth compounds. It is formed, together with an acid, from a reaction between a Bismuth (III) salt and hydrogen sulfide (H_{2}S). In the given reaction, the Bismuth salt used in the reaction is Bismuth (III) chloride (BiCl_{3}). 

The balanced reaction of BiCl_{3} and H_{2}S is

2BiCl_{3} + 3H_{2}S --> Bi_{2}S_{3}+ 6HCl

Thus, the coefficient of HCl in the reaction is 6.
6 0
3 years ago
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