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djyliett [7]
3 years ago
10

SCIENCE - Can someone tell me the ph level of rain water?

Chemistry
1 answer:
amid [387]3 years ago
8 0
Normal rainwater has a pH of 5.6<span> (slightly acidic)</span>
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Predict whether each of the following bonds is ionic, polar, covalent, or nonpolar covalent:
Gekata [30.6K]

Explanation:

It is known that in order to determine a compound to be ionic, polar, covalent or non-polar covalent it is necessary to determine the electronegativity difference of the combining atoms.

So, when electronegativity difference is from 0.0 to 0.4 then bond formed between the two atoms is non-polar covalent in nature.

When electronegativity difference is greater than 0.4 and less than 1.8 then bond between the two atoms is a polar covalent bond.

When electronegativity difference is 1.8 or greater than the bond formed is ionic in nature.

Electronegativity difference of the given molecules is as follows.

Si-O = (1.90 - 3.44) = 1.54

K-Cl = (0.82 - 3.16) = 2.34

S-F = (2.58 - 3.98) = 1.4

P-Br = (2.19 - 2.96) = 0.77

Li-O = (0.98 - 3.44) = 2.46

N-P = (3.04 - 2.19) = 0.85

Therefore, given compounds are classified as follows.

Si-O, S-F, P-Br, and N-P all have a polar covalent bond. Whereas K-Cl and Li-O are ionic in nature.

7 0
3 years ago
Read 2 more answers
Which of these is a base? a-vinegar b-ammonia c-HCl d- HNO3
Lady_Fox [76]
B- ammonia. ammonia has a pH level of about 11, and anything higher than 7  is more basic and anything less than 7 is more acidic. 7 is considered neutral.
6 0
3 years ago
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n the laboratory, a general chemistry student measured the pH of a 0.342 M aqueous solution of ethylamine, C2H5NH2 to be 12.067.
Tasya [4]

Answer:

The value of K_b of the an ethylamine is 4.121\times 10^{-4}.

Explanation:

The pH of the solution = 12.067

The pOH of the solution = 14 - pH =14-12.607 =1.933

pOH=-\log[OH^-]

1.933=-\log[OH^-]

[OH^-]=0.0117 M

C_2H_5NH_2+H_2O\rightleftharpoons C_2H_5NH_3^{+}+OH^-

Initially

0.342 M                              0     0

At equilibrium

(0.342-x)                             x      x

The value of x = [OH^-]=0.0117 M

The expression of K_bis given as:

K_b=\frac{[C_2H_5NH_3^{+}][OH^-]}{[C_2H_5NH_2]}

K_b=\frac{x^2}{(0.342-x)}

K_b=\frac{(0.0117 )^2}{(0.342-0.0117)}=4.121\times 10^{-4}

The value of K_b of the an ethylamine is 4.121\times 10^{-4}.

7 0
3 years ago
Where are lighter elements fused into elements more massive than iron?
Kaylis [27]
The answer is a supernova. 
4 0
3 years ago
What is the correct name for ionic compound Cs2S?
Leno4ka [110]
The name for the ionic compound Cs2S is Cesium sulfide.
7 0
3 years ago
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