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Anna35 [415]
3 years ago
6

Solubility (polar vs. Nonpolar)

Chemistry
2 answers:
OverLord2011 [107]3 years ago
8 0
#.3 Ethanol as a Solvent. Ethanol is a very polar molecule due to its hydroxyl (OH) group, with the high electronegativity of oxygen allowing hydrogen bonding to take place with other molecules. The ethyl (C2H5<span>) group in ethanol is non-polar. Thus, ethanol can dissolve both polar and non-polar substances.
4.Benzene is non-polar </span><span>Electric charge in the molecules of non-polar solvents is evenly distributed, therefore the molecules have low </span>dielectric constant<span>. Non-polar solvents are hydrophobic (immiscible with water). Non-polar solvents are liphophilic as they dissolve non-polar substances such as </span>oils<span>, </span>fats<span>, </span>greases<span>.</span>
eduard3 years ago
4 0

<u>Explanation:</u>

It is given that polar solutes can be dissolved in polar solvents and non-polar solutes can be dissolved in non-polar solvent.

Alcohol being polar, does not dissolves ionic salt in it.

CCl_4 is a non-polar solvent.

From the given options:

1. NaCl: This is an ionic salt and hence, it will be soluble in water only.

2. I_2 : Iodine gas is a non-polar solute and hence, will be dissolved in non-polar solvent which is CCl_4

3. Ethanol: As, it is a polar molecule and is not an ionic salt, therefore it can be soluble in both water and alcohol.

4. Benzene: It is a non-polar molecule and hence, it will be dissolved in CCl_4

5. Br_2 : Bromine gas is a non-polar solute and hence, will be dissolved in CCl_4

6. KNO_3: This is an ionic salt and hence, it will be soluble in water only.

7. Toluene: This is a non-polar solute and hence, will be dissolved in CCl_4

8. Ca(OH)_2: This is an ionic salt and hence, it will be soluble in water only.

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What was one main point of Dalton's atomic theory?
sweet-ann [11.9K]

Answer:

C. That atoms made up the smallest form of matter

Explanation:

The crux of the Dalton's atomic theory is that atoms are the smallest form of matter. He propositioned that atoms is an indivisible particle and beyond an atom, no form of matter exists.

Series of discoveries through time have greatly shaped the Dalton's atomic theory. The discovery of cathode rays by J.J Thomson in 1897 opened up the atom. Atoms were now seen to be made up of some negatively charged particles. Ernest Rutherford through his gold foil experiment proposed the nuclear model of the atom.

4 0
3 years ago
Density is considered what type of property
Taya2010 [7]
Density is a physical property. It's measured and doesn't change the object chemically.
4 0
3 years ago
What is the limiting reagent when a 2.00 g sample of ammonia is mixed with 4.00 g of oxygen?​
UNO [17]

Answer:

Ammonia is limiting reactant

Amount of oxygen left  = 0.035 mol

Explanation:

Masa of ammonia = 2.00 g

Mass of oxygen = 4.00 g

Which is limiting reactant = ?

Balance chemical equation:

4NH₃ + 3O₂     →     2N₂ + 6H₂O

Number of moles of ammonia:

Number of moles = mass/molar mass

Number of moles = 2.00 g/ 17 g/mol

Number of moles = 0.12 mol

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles = 4.00 g/ 32 g/mol

Number of moles = 0.125 mol

Now we will compare the moles of ammonia and oxygen with water and nitrogen.

                      NH₃          :            N₂

                        4             :             2

                      0.12           :           2/4×0.12 = 0.06

                      NH₃         :            H₂O

                        4            :             6

                        0.12       :           6/4×0.12 = 0.18

                       

                       O₂            :            N₂

                        3             :             2

                      0.125        :           2/3×0.125 = 0.08

                        O₂           :            H₂O

                        3              :             6

                        0.125       :           6/3×0.125 = 0.25

The number of moles of water and nitrogen formed by ammonia are less thus ammonia will be limiting reactant.

Amount of oxygen left:

                        NH₃          :             O₂

                           4            :              3

                           0.12       :          3/4×0.12= 0.09

Amount of oxygen react = 0.09 mol

Amount of oxygen left  = 0.125 - 0.09 = 0.035 mol

3 0
3 years ago
Please help its urgent
mrs_skeptik [129]

Answer:

C

Explanation:

I picked C because the plant is interacting with the sun which is a nonliving part of the environment.

A, B and D are wrong because seaweed, horses, and trees are living things.

8 0
2 years ago
Read 2 more answers
What is the temperature of liquid nitrogen?
motikmotik
Really darn cold lol
6 0
3 years ago
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