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kondaur [170]
3 years ago
5

2 of 20 Which intermolecular force or bond is primarily responsible for the solubility of CH3OH in water? lonic bonding Hydrogen

bonding Covalent bonding Dipole-dipole force lon-dipole force Navigator F10 F11 F12 PSC
Chemistry
1 answer:
Vlad [161]3 years ago
5 0

Answer:

Hydrogen bonding

Explanation:

As a rule of thumb, "likes dissolve like", meaning polar solutes dissolve in polar solvents and nonpolar solutes in nonpolar solvents. In this case, water is polar (<em>dipolar moment</em> = 1.85 Debye) dissolves methanol which is also polar (<em>dipolar moment</em> = 1.69 Debye). Besides being dipoles, both molecules have atoms of Hydrogen with a covalent bond to more electronegative atoms of Oxygen. When this happens, stronger dipole-dipole interactions appear known as Hydrogen bonding. There is an electrostatic attraction between H (positive charge density) and O (negative charge density).

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Find the density of a piece of glass with a mass of 500g and a volume of 200cm3
kykrilka [37]
Density = mass/volume
D = 500 g /200 cm^3
D = 2.5 g/cm^3

hope this helps!
3 0
4 years ago
An atom's tendency is to become stable. What does this mean? A. The electrons all move to one electron shell. B. The atom gains
masya89 [10]
The answer is D. To put it simply, all atom wished to become stable. The only way for that is to obtain an octet structure where the outermost shell would have 8 electrons, thus being full.
3 0
4 years ago
Read 2 more answers
Worth 40 Points❤ 10th grade chemistry ‍
brilliants [131]

Answer:

  1. F
  2. E
  3. G
  4. A
  5. C
  6. B
  7. D

Explanation:

Those are the answers in order, BUT the Goldstein and Rutherford ones are confusing me because Rutherford discovered<em> protons</em> and the <em>nuclear atom</em>. Through my research I also noticed that Goldstein contributed to the discovery of the protons made Rutherford, so I listed him as the one who discovered the proton.

I hope this helps! Have a wonderful night! :D

6 0
3 years ago
Show a numerical setup for calculating the number of moles in the sample of CaCO3
Delvig [45]

The numerical setup is

<span>11<span>g</span></span>CO2×1 mol CO2/44.01g CO2=0.25 mol CO2

gCO2 cancels out so it is

11 x 1 mol CO2/44.1 CO2= 0.25 mol CO2

6 0
4 years ago
For a reaction: aA → Products, [A]o -4.3 M, and the first two half-lives are 56 and 28 minutes, respectively. Calculate k (witho
Mkey [24]

Answer:

C.3.8\times 10^{-2}

Explanation:

We are given that

Initial concentration, [A]_o=4.3 M

First half life, t_{\frac{1}{2}}=56minutes

Second half life, t'_{\frac{1}{2}}=28minutes

We have to find K.

The given reaction is zero order reaction.

We know that for zero order reaction

t_{\frac{1}{2}}=\frac{[A]_o}{2k}

Using the formula

56=\frac{4.3}{2k}

k=\frac{4.3}{2\times 56}

k=3.8\times 10^{-2}

Hence, option C is correct.

4 0
3 years ago
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