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hichkok12 [17]
2 years ago
10

State the differences between Transition metals and S-blocks metals​

Chemistry
1 answer:
Talja [164]2 years ago
8 0

Answer:

There both different

Explanation:

There just different

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Caclulate the pH for a solution with an [H+] = 9.75 x10-4
vovangra [49]

Answer:

pH=3.01

Explanation:

pH=-log[H+]

=-log(9.74x10e-4)

=3.01

3 0
3 years ago
When the equation below is balanced, what is the coefficient for oxygen?<br> C3H8+O2=CO2+H2O
Nataly [62]
Se for no balanceamento e 5. 
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3 years ago
A 29.8 mL sample of a 0.476 M aqueous hydrocyanic acid solution is titrated with a 0.487 M aqueous barium hydroxide solution. Wh
riadik2000 [5.3K]

Answer:

The pH is 4.76

Explanation:

Step 1: Data given

Volume of a 0.476 M hydrocyanic acid solution = 29.8 mL = 0.0298 L

Volume of 0.487 M barium hydroxide solution = ?

Ka HCN = 6.2 * 10^-10

Step 2: Calculate pH

Hydrocyanic acid is a weak acid.

Barium hydroxide is a strong base.

 

The question asked = the pH BEFORE any base has been added, so we can ignore the base.  

 

To calculate the pH of aweak acid, we need the pKa

HCN ⇔ H+ + CN-

Ka =  [H+][CN-]/[HCN]

⇒ for weak acid: [H+]=[CN-]

Ka = [H+]²/[HCN]

[H+]² = [HCN]*Ka

[H+] = √([HCN]*Ka)

pH = -log(√([HCN]*Ka))

pH = -log(√(0.476 * 6.2*10^-10))

pH = 4.76

The pH is 4.76

7 0
3 years ago
Mutations that neither benefit nor harm the organism have effect on the organism's survival.
nalin [4]

No mutations that neither benefit nor harm the organism has no effect on the organism's survival.

Explanation:

The neutral mutations do not cause any effect on the organism they occur. They are called silent point mutations because they do not code for the amino acid change in the proteins.

They have no effect on the organism's survival neither beneficial nor harmful effect.

The neutral mutations do not affect the process of Natural selection.

7 0
3 years ago
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A weak acid is one which:
aleksklad [387]
It bbbbbbbbbbbbbbbbbb
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3 years ago
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