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katen-ka-za [31]
3 years ago
12

What are two properties of diamonds that make them different from other forms of carbon?

Chemistry
1 answer:
Airida [17]3 years ago
6 0
They are tetrahedral in shape
they carbon atom share all four of its outer electrons with other carbon atoms to form 3D shape
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A particular solution of NaOH has hydronium concentration of 4x10-9 M. what is the solution’s pH?
bearhunter [10]

Answer:

The pH of the solution is 8, 40-

Explanation:

The pH indicates the acidity or basicity of a substance. PH values between 0 and less than 7 indicate acidic solutions, 7 neutral and greater than 7 to 14 basic. It is calculated as

pH = -log (H30+)

pH= -log (4x10-9M)

<em>pH=8,40</em>

8 0
3 years ago
A compound with an approximate molar mass of
Sauron [17]
G about the answer if I don’t do this I Will fail!!!!!! NO LINKS NO LYING
4 0
3 years ago
Propanoic acid, ch3ch2cooh, has a pka =4.9. draw the structure of the conjugate base of propanoic acid and give the ph above whi
xenn [34]

Conjugate base of Propanoic acid (CH_{3}CH_{2}COOH is propanoate where -COOH group gets converted to -COO^{1-}. The structure of conjugate base of Propanoic acid is shown in the diagram.

The p^{H} above which 90% of the compound will be in this conjugate base form can be determined using Henderson's equation as propanoic acid is weak acid and it can form buffer solution on reaction with strong base.

p^{H}= p^{k_{a}+ log\frac{[Conjugate base]}{[acid]}=4.9+log\frac{90}{10}=5.85

As 90% conjugate base is present, so propanoic acid present 10%.

8 0
3 years ago
2/10
emmainna [20.7K]

Answer:

pH=2.34

Explanation:

HBr  -> H  + Br

The dissociation it's complete, for that reason the concentration of the products is the same of HBr

[H+]=[Br-]=0.00234 M

pH= - log (0.00234)=2.34

6 0
3 years ago
For a reaction 2A + B 2C, with the rate equation: Rate = k[A]2[B]
In-s [12.5K]
For reaction

2 A + B  ------------> 2 C  

Rate = K [ A ]² [ B ]

<span> the order with respect to A is 2 and the order overall is 3.
</span>
hope this helps! 


3 0
3 years ago
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