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-BARSIC- [3]
2 years ago
11

nonpolar solutes dissolve more readily in nonpolar solvents than polar solvents. Describe the interactions occuring between the

solute and the solvent
Chemistry
1 answer:
earnstyle [38]2 years ago
8 0

Answer:

The interactions are known as London dispersion forces.

Explanation:

It is widely known that the electron density distribution in polar and nonpolar molecules is not uniform and not static. In most cases, the electron density in any molecule will adjust to create a spontaneous dipole. In the presence of nonpolar solute and nonpolar solvent, the spontaneous dipoles have a propagating effect on the interaction. If molecule A produces a spontaneous dipole, then the electron density in the other molecule B will react by creating an opposite spontaneous dipole. The dipoles have interactive forces known as the London dispersion forces.The magnitudes of these forces increase with increase in the surface area of the molecule. Therefore, molecules with larger surface areas will have stronger London dispersion forces than those with smaller surface areas.

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Write balanced molecular equation for the reaction between nitric acid and calcium hydroxide. Express your answer as a chemical
Alisiya [41]

Answer:

2HNO3 + Ca(OH)2 ===> Ca(NO3)2 + 2H2O

Explanation:

This a neutralisation reaction. The first thing to note is that this type of reaction forms salt and water.

Note that the formula of water is H2O. So write this at the right hand side.

                                    ==> H2O

Next note that the salt should contain the acid radical (NO3) and the metallic part of the base (Ca) written well following the rule for writing chemical equation; thus

                            ==> Ca(NO3)2 + H2O

The next step is to write the reactants at the right hand side of the equation;

HNO3 + Ca(OH)2 ==> Ca(NO3)2 + H2O

The final step is to count the number of atoms in each side of the equation to make sure they are equal and balanced.

In the above equation, H atoms are three at the left hand side add 2 to to H- containig compound on both side as to balance up. Thus

2HNO3 + Ca(OH)2 ===> Ca(NO3)2 + 2H2O

The equation 2HNO3 + Ca(OH)2 ===> Ca(NO3)2 + 2H2O is balance.

4 0
2 years ago
Why air is blended in ice cream
sladkih [1.3K]
Air is blended in ice cream to give it l<span>) air is often blended into icecream to give it a lighter texture </span>
<span>b)when popping corn is heated water inside the kernels becomes gas and expands. this creates enough gas to explode the kernel. </span>
<span>c)a loud pop is heard with a lit match is placed at the mouth of a testtube holding hydrogen gas </span>
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5 0
3 years ago
This means that the steel bar lost 14900 J of thermal energy. What is the change in temperature of the steel bar? Recall that th
stiv31 [10]

Answer:

ΔT=-747,13°C

Explanation:

Sensible heat is<em> the amount of thermal energy that is required to change the temperature of an object</em>, the equation for calculating the heat change is  given by:

Q=msΔT

where:

  • Q, heat that has been absorbed or realeased by the substance [J]
  • m, mass of the substance [g]
  • s, specific heat capacity [J/g°C] (
  • ΔT, changes in the substance temperature [°C]

To solve the problem, we clear ΔT of the equation and then replace our data:

Q=msΔT

ΔT=Q/ms

ΔT=\frac{-14900 J}{40,7g*0,49\frac{J}{gC} }=-747,13°C

<em>(Note that Q=-14900 J because there is a </em><u><em>LOST</em></u><em> of thermal energy)</em>

Thus, the change in temperature of the steel bar is -747,13°C, meaning that the temperature of the bar decreases.

5 0
3 years ago
Read 2 more answers
Which cohesive forces are the strongest in water?
jeyben [28]

When cohesive force is stronger than the adhesive force: concave up meniscus, water forms droplets on surface

4 0
2 years ago
How many moles of H2O are in 64.0 g of H2O
Alina [70]

Answer:

Explanation:

stoichiometry of C₂H₂ to H₂O is 2:2.

Number of moles of C₂H₂ = molar mass of C₂H₂  

Since the molar mass of C₂H₂  is 26 g/mol.

Number of C₂H₂  moles reacted = 64.0 g / 26 g/mol = 2.46 mol.

according to a molar ratio of 2:2.

the number of H₂O moles formed = a number of C₂H₂  moles reacted.

Therefore the number of H₂O moles produced = 2.46 mol

8 0
1 year ago
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