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Alexxandr [17]
3 years ago
8

What structural features are required to generate a structure with zero dipole moment for molecules containing more than one hig

hly polar bond?
Chemistry
1 answer:
Blababa [14]3 years ago
5 0
<span>The total molecular dipole moment of a molecule is in general the vector sum of various local electric dipoles that exist in the molecule. These local electric dipoles are of two types that we will call bond dipoles and lone pair dipoles. A bond between two atoms, X and Y, in which the bond pair is unequally shared is called a polar bond.</span>
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Calculate the concentration of all ions present in each of the following solutions of strong electrolytes.
MAVERICK [17]

Answer:

a. Ca2+  1M ; NO3-  2M

b. Na+  4M ;  SO4-2  2M

c.  NH4+ , Cl-  0,186M  

d. K+ 0,056M ; PO4-3 0,0188 M

Explanation:

Here are the ionization equations

Ca(NO3)2 ----> Ca2+  +  2NO3-

Na2SO4 ------> 2Na+   +  SO4-2

NH4Cl ------> NH4+  +  Cl-

K3PO4 -----> 3K+   +   PO4-3

Concentrations must be in Molarity (moles/L)

Ca(NO3)2 0,1 mole in 100mL

100mL = 0,1 L

Molarity Ca(NO3)2  1M  (0,1 /0,1)

Ca(NO3)2 ----> Ca2+  +  2NO3-

1 M                      1M            2M

Na2SO4 2,5 moles in 1,25L

Molarity Na2SO4 2,5 moles /1,25L = 2M

Na2SO4 ------> 2Na+   +  SO4-2

2M                     4M             2M

5.00 g of NH4Cl in 500mL

We have to resort to the molar mass

Let's make the rule of three

500mL ______ 5g

1000mL _____ (1000mL . 5g) / 500mL = 10 g

(These are the grams in 1L, so with the molar mass, we get the moles)

Mass / Molar mass = moles --> 10g / 53,5 g/m = 0.186 moles

NH4Cl ------> NH4+  +  Cl-

0,186 M      0,186M  +  0,186M

1.00 g K3PO4 in 250.0 mL

(The same as before)

250 mL ________1 g

1000 mL _______ (1000 mL . 1 g) /250mL = 4 g

These are the grams in 1L, so with the molar mass, we get the moles

Mass / Molar mass = moles -->  4g /212,26 g/m = 0,0188 moles

K3PO4 -----> 3K+   +   PO4-3

0,0188 M      0,056M   +  0,0188 M

7 0
3 years ago
What are some changes that can be caused by sound energy? by electromagnetic energy?
Pavel [41]

Hearing loss due to sound energy damaging the nerve cells in the inner ear. Many animals behavior is influenced by sound energy. They learn to associate events with sounds, so they run when something crunches in the dry grass (might be a coyote), but won't be bothered by the sound of a waterfall. Mood is affected by sound energy. A wine glass can break with sound energy, if the frequency matches the resonant frequency of the wine glass and the amplitude is great enough (one Mythbusters show featured a professional singer who broke a wine glass with his voice without any amplification).

5 0
3 years ago
Read 2 more answers
When glass is formed, which of these takes place FIRST? A) The sand turns to liquid. B) The molecules become hard. C) The sand i
otez555 [7]

I would say D and if that's not it it's A

Hope This Helps!    Have A Nice Day!!

5 0
4 years ago
Read 2 more answers
How many electrons does an aluminum ion have with a +3
Varvara68 [4.7K]

Answer:10

Explanation:

3 0
3 years ago
What was the main reason the Federalists wanted
Novay_Z [31]
The national government was too weak to solve the nation's problems. 

The Articles of Confederation were only meant to be temporary, like a stand in, until a better document, eventually known as the constitution, could be created.
5 0
4 years ago
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