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ELEN [110]
3 years ago
8

Identify the type of intermolecular force for water, vegetable oil, and corn syrup.

Chemistry
1 answer:
aleksandrvk [35]3 years ago
5 0

Answer:

Intermolecular force for oil the dipole-dipole.

Intermolecular force for water hydrogen bonds.

Intermolecular force for vegetable oil nonpolar compound.

Intermolecular force for corn syrup fructose.  

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Molecules in a sample of NH3 are held closely together by intermolecular forces
morpeh [17]
The forces in NH3 includes the vanderwaals force which will always be present and hydrogen bonding due to the electronegativity of N as compared to H. When it is in solution, there will be ionic interactions because there will be some NH4+ ions formed.
4 0
4 years ago
Find the ratio v/cv/c for an electron in the first excited state (n = 2) of hydrogen.
dezoksy [38]

The answer is 0.365:100.

v/c ratio represents ratio of speed of an electron (v) to the speed of light (c).

How is the speed of an electron calculated?

  • The speed of an electron (v) is given by Bohr's model as-

v =\frac{1}{n}\; \frac{e^{2}}{4\pi \varepsilon _{0}}\times \frac{2\pi }{h}

Now, for the first excited state, n = 2.

e - Charge of electron = 1.6×10^{-19} C

h - Plank's constant = 6.6×10^{-34} J.s

ε₀- permittivity = 8.85×10^{-12}N^{-1}.C^{2}.m^{-2}

  • Put the above data in the formula-

v =\frac{1}{2}\; \frac{e^{2}}{4\pi \varepsilon _{0}}\times \frac{2\pi }{h}       =\frac{1}{4}\times \frac{(1.6\times 10^{-19})^{2}}{8.85\times 10^{-12}\times 6.6\times 10^{-34}}\\ \\     =0.01096\times 10^{8} \\      \\=1.096\times 10^{6}ms^{-1}

  • Now, the speed of light, c = 3.0×10^{8}\ m/s
  • Thus, the v/c ratio for an electron in the first excited state is calculated as-

\frac{v}{c} =\frac{1.096* 10^{6}\ m/s }{3.0 *10^{8}\ m/s }= \frac{0.365}{100}

  • Hence, the v/c ratio = 0.365:100.

To learn more about the speed of an electron (v), visit:

brainly.com/question/13198566

#SPJ4

6 0
2 years ago
Chemistry
sukhopar [10]

Answer:

11.442E23molecules

Explanation:

Given data:

Number of moles of water = 1.9 mol

Number of molecules of water = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

In 1.9 moles:

1.9 mol × 6.022 × 10²³ molecules / 1 mol

11.442 × 10²³ molecules

In e notation:

11.442E23 molecules

6 0
3 years ago
Substance B was heated at first gently and then more strongly in a bunsen flame. Two gases were given off, one of them brown. A
Illusion [34]

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8 0
3 years ago
Which arrow represents the change of state described
Mama L [17]

Answer:N

Explanation:

6 0
3 years ago
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