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Mariana [72]
3 years ago
5

Which of the following types of molecules always has a dipole moment? Linear molecules with two identical bonds. Trigonal pyrami

d molecules (three identical bonds). Trigonal planar molecules (three identical bonds equally spaced). Tetrahedral molecules (four identical bonds equally spaced). None has a dipole moment.
Chemistry
1 answer:
natali 33 [55]3 years ago
8 0

Answer:

Trigonal pyramid molecules (three identical bonds)

Explanation:

In trigonal pyramidal molecule  like molecule of ammonia , the vector some of intra- molecular dipole moment is not zero because the bonds are not symmetrically oriented . In other molecules , bonds are symmetrically oriented in space so the vector sum of all the internal dipole moment  vectors cancel each other to make total dipole moment zero.

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Neporo4naja [7]

Answer:

0.1 is the retention factor.

Explanation:

Distance covered by solvent ,d_s= 2.0 cm

Distance covered by solute or ion,d = 0.20 cm

Retention factor(R_f) is defined as ratio of distance traveled by solute to the distance traveled by solvent.

R_f=\frac{d}{d_s}

R_f=\frac{0.20 cm}{2.0 cm}=0.1

0.1 is the retention factor.

7 0
3 years ago
A shiny, smooth piece of black plastic and an identical piece of white plastic are exposed to visible light and sound waves. Whi
Nana76 [90]

Answer:

The awnser is D

Explanation:

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7 0
2 years ago
What is one substance that is 100x more acidic than baking soda
daser333 [38]

Answer:

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Explanation:

8 0
2 years ago
On a graph, which type of line shows a direct proportion?
leonid [27]
Direct Proportion and The Straight Line Graph.Straight<span> line graphs that go through the origin, like the one immediately below, show that the quantities on the graph are in direct proportion.
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3 years ago
How many liters of oxygen are in 8.32 moles of oxygen at STP
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Answer:

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