If a substance is a bad conductor as a solid, but a good conductor as a liquid or when dissolved into water, which type of bond is holding the compound together?

The vapor pressure (in torr) of a 35°C solution : 52 torr

Given

x propanol = 0.75

P°ethanol=100 torr

P°propanol=36 torr

Required

the vapor pressure

Solution

Raoult's Law

P solution = xA.P°A +xB.P°B

x ethanol = 1- 0.75 = 0.25

Input the value :

P solution = 0.25 x 100 + 0.75 x 36

P solution = 25 + 27

P solution = 52 torr

Answer: answer A

Explanation: because it gives more detail and a summarizations

Answer:

The answer is endothermic

Answer:

Natural Resource

Explanation:

A natrual resource is something that was created when Earth was first made. They were intended to fulfill human needs when they needed them. An example of a natural resource can be water, because we will need water to survive.

Answer:

Differences: Earth's atmosphere has 5 main layers where as atmospheric layers thins out in each higher layer.

Similarities: They both have multiple layers.

Explanation:

Sorry I only have 1 difference and similarity.

Answer:

9.5 m

Explanation:

First, divide 4.75 m by the 0.50 l

4.75/0.50

This leaves you with 9.5 m

Answer:

the second stage of cell division. its between prophase and anaphase during the chromosomes become attached to spindle fibers.

The number of molecules in one mole of hydrogen gas is 6.02 × 10²³ . The number of molecules in 10 moles of hydrogen gas is then 6.022 ×10²⁴.

Any substance  that contains   6.022 × 10²³ number of atoms is called ne mole of that substance. This number is called Avogadro number. Hence, one mole of every elements contains Avogadro number of atoms.

Hydrogen  is the first element in periodic table. It is an alkali metal. The number of molecules  in one mole of H₂ is equal to Avogadro number. Mass of a molecule with one mole of amount is called its molecular mass.

Number of molecules of H₂ in one mole  =  6.02 × 10²³  

Then number of molecules in 10 moles is Avogadro  number times the number of moles.

= 10 × 6.022 × 10²³ =  6.022 ×10²⁴ molecules

Therefore, 10 moles of  H₂ contains  6.022 ×10²⁴molecules..

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Answer:

Sand dunes are created when wind deposits sand on top of each other until a small mound starts to form. Once that first mound forms, sand piles up on the windward side more and more until the edge of the dune collapses under its own weight.

Answer: Fish

Explanation:

Biotic factor is one of the component of the ecosystem. It is the living component of the ecosystem. It is affected or influenced by the non-living or abiotic components of the ecosystem like water, air, sunlight, and others. Fish is an example of biotic factor which is dependent on abiotic component that is oxygen which is the chief gas required for the breathing. The oxygen is one of the components of the water. So, the oxygen is dissolved in water and the fish acquire the oxygen through water only.

In an ecosystem, deep, cold water is the  densest while warm, shallow water is the  least dense.

An ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Answer: A. The oceans‘ tidal would be smaller because the moon would exert less gravitational pull on earths oceans.

Explanation:

i got it right :)

Answer:

2h+02=h20

Explanation:

2 in front of h on left side

2 in front of h on right side

Answer:

Explanation:

1. __1___ Fe + __1___ S → __1___ FeS. 2. __1___ H2 + __1___ Cl2 → __2___ HCl. 3. __2___ Mg + __1___ O2 → __2___ MgO. 4. __1___ O2 + __2___ H2

Answer:

Explanation:

Answer:

Humans

Explanation:

Humans have energy of motion and store energy.

Every object will have any form of energy. For instance, when we are walking we gains a kinetic energy. We use electronic devices where electrical energy is stored and can be converted to mechanical energy to activate any motors.

Energy can neither be created nor be destroyed. However it can be transformed to any other forms. Thus, the total energy will conserved always.

We have a lot of example for energy transformation and storage. The energy form stored by virtue of the position of an object is called potential energy. Whereas, when the object starts moving potential energy converts to kinetic energy.

Thus, thermal vibrations of particles, our every day activities all are associated with a kinetic energy. Kinetic energy  of each body depends on the mass and velocity of the body. The more the mass and velocity more will be the kinetic energy.

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Answer:

-6.51

Explanation:

Multiply 1.86 x 2 x 1.74 and then you get your answer.

Answer:

As the molality increases by 1 m, there is a corresponding decrease of 1.86°C in the solution’s freezing point.

Explanation:

Anser on EDge

Answer:

Matter

Explanation:

All matter is made up of substances called elements

Answer:

Under normal conditions, a magnetic material like iron doesn't behave like a magnet because the domains don't have a preferred direction of alignment. On the other hand, the domains of a magnet (or a magnetized iron) are all aligned in s specific direction.

Explanation:

Answer:

option c

Explanation:

as catalyst increases the reaction while activation energy is inversely proportional to rate of reaction, so option c is correct

The purpose of a catalyst to lower the activation energy of a reaction.

A type of chemical that, without becoming consumed by the process, speeding a chemical reaction or reduce the temperature as well as the pressure required to initiate one. The addition of a catalyst to speed up a reaction is known as catalysis.

The bare minimum additional energy needed by a reactive molecule to transform into a product is considered as activation energy.

The purpose of a catalyst is to lower the activation energy of a reaction.

Therefore, the correct answer will be an option (C).

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Answer:

Transverse wave

Explanation:

A wave is defined as a disturbance along a medium which transfers energy from one point to another.

A wave may be classified as transverse or longitudinal based on the direction of energy transfer relative to the direction of wave motion.

In a transverse wave, energy is transferred in a direction perpendicular to the direction of wave travel. Hence, the direction in which the energy travels is opposite to the direction in which the wave travels.

Answer:

Explanation:

c. - vaccine

b. - immunity

d. - phagocyte

f. - b cell

e. - t cells

a. active immunity

Answer:

number of moles =

[tex]53.3 \times 10 {}^{3} mol[/tex]

Explanation:

here's the solution in attachment.

Answer:

hope this helps!

Explanation:

This law states that a still object will stay still unless a force pushes or pulls it. A moving object will stay moving unless a force pushes or pulls it. Gravity and friction are forces that constantly push and pull the "stuff" on earth. So, when we roll a ball, it slowly comes to a stop.