me need help...................!!!!!!!!!!!

Answer:

Light is a transverse wave.

Explanation:

Light waves are not considered mechanical waves because they don't involve the motion of matter. Most of the mathematics and properties of mechanical waves apply to light waves. Light waves are different from mechanical waves, however, because they can travel through a vacuum.

Answer:

Getting carried down a moutain side or a cliff and they are relocated.

Explanation:

Glaciers are responsible for moving rocks from one place to another

Taking into account the Gay Lussac's law, the pressure in the backup tank at -183 °C is 270 mmHg.

Gay Lussac's law establishes the relationship between the temperature and pressure of a gas when the volume is constant.

This law says that the pressure of the gas is directly proportional to its temperature: when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, gas pressure decreases.

Mathematically, Gay-Lussac's law states that the ratio between pressure and temperature has the same value:

[tex]\frac{P}{T} =k[/tex]

Studying an initial state 1 and a final state 2, it is fulfilled:

[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]

In this case, you know:

Replacing in the Gay-Lussac's law:

[tex]\frac{900 mH}{300 K} =\frac{P2}{90 K}[/tex]

Solving:

[tex]P2=90K\frac{900 mH}{300 K}[/tex]

P2=270 mmHg

Finally, the pressure in the backup tank at -183 °C is 270 mmHg.

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Based on the research in Study 1, as the wavelength of light increases, the reflectance of Cyanide: C. increases, then decreases.

Wavelength is simply defined as the distance (in meters) between two (2) successive crests or troughs of a wave. Thus, wavelength refers to the horizontal distance between two adjacent crests or troughs of a wave.

Generally, there is a linear relationship between the wavelength of light and reflectance. Thus, as the wavelength of light increases, the reflectance of Cyanide in Study 1 increases, before it then decreases.

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Answer:

Increasing the H+/H3O+ will decrease the pH, while increasing the OH- ions will increase the pH

Explanation:

so pH=-log(H), which means that the smaller H gets to 0, the more the pH rises. The larger the H+ gets, the smaller the pH
if H is 1, then pH is 0
if H is 0.1, then pH is 1
if H is 0.01, then pH is 2
and so on
if H is 0.00000000000001, then the pH is 14
When OH goes up, H goes down, so
if OH is 0.00000000000001, then the ph is 0
if OH is 0.0000000000001, then the pH is 1
and so on
If the OH is 1, then the pH is 14

Denatured alcohol and isopropyl alcohol are as similar as they as different. They are both used for cleaning and harmful to people if ingested. But isopropyl seems to be more effective than denatured alcohol. Denatured alcohol has been found to be more toxic and can harm our skin. But when it comes to cleaning, denatured alcohol can be used, but should not be used over isopropyl as it can leave behind residue, especially when it comes to electronic devices. Isopropyl, especially 70%, is more effective because it has more water, which can help it dissolve more slowly, penetrate cells, and kill bacteria.

Explanation:

I hope this helps answer your questions

An example of a temporary disruption from equilibrium is a temperature change, this would be compensated through sweating.

This refers to a constant state in which forces are balanced. Inside the body, equilibrium means certain conditions such as the level of oxygen or the temperature are constant.

This can be lost due to many factors, in the body, this occurs as a result of sudden changes either inside or outside the body. An example of this is sudden temperature changes, for example, if you go out of your house and it is snowing or it is very hot outside.

The body has specific mechanisms to restore the temperature. For example, if the environmental temperature is too high the body uses sweating to keep a constant temperature.

Note: This question is incomplete because the list of part 1 is not given; due to this, the answer is based on general knowledge.

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Answer: describe in general a process desert plants might need to carry out in order to maintain homeostasis

Explanation:

Chemist prefer to use kipp’s apparatus for the production of hydrogen sulphide instead of woulf’s bottle because they produce gas without generating heat.

Kipp's appratus and woulf's bottle both are the laborartory appratus and used in the analytical process of any reactions.

Hydrogen sulphide gas will be produced in the laborartory by using both given appratus but we prefer the use of kipp's apparatus because in this apparatus small amount of gas is produced in the controlled heat condition by the reaction between the liquid sulphuric acid and solid iron sulphide.

Hence we prefer kipp's appratus as it produces gas without heat.

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The pressure in the 8.00 L tank with 50.5 grams of chlorine gas at 365 K is 2.66 atm.

Pressure can be defined as the force acting prpendicular per unit surface.

To calculate the pressure of chlorine gas, we use the formula below.

Formula:

Where:

Make P the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, The pressure in the 8.00 L tank with 50.5 grams of chlorine gas at 365 K is 2.66 atm.

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The leaves of plants primarily serve to photosynthesize and require water conducted by the root to do so.

As a leaf of a plant running low on supplies that the root is responsible for, what I will be needing is water.

Thus, I will have to send a text message to the root to supply me with water. The root will respond by asking its foot soldiers (the root hairs) to conduct water into the root.

Once water gets into the root, it enters special cells that are responsible for conducting water inside plants - the xylems. The root sends the water through the xylem and water travels from there to me - the leaf.

Once the water gets to me, I will use it in combination with inorganic carbon (carbon dioxide) to synthesize carbohydrates.

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Answer:

21 22 23 24 25 26 27 28 29 30

Explanation:

Water will move into the cell because of lower concentration of water inside the cell as compared to outside.

Water has a tendency to move across a membrane from a lower osmolarity to a higher osmolarity which means from higher concentration region to the lower concentrated region.

So we can conclude that water will move into the cell due to lower concentration of water inside the cell as compared to outside.

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Answer:

If you're from study island, the answer is D. Water will move out of the cell.

Explanation:

I got it on study island and this was right.

Answer:

D. it results in an equilibrium mixture of reactants and products

Explanation:

took the test

Answer:

A + and spontqneous

Explanation:

i hope this helps.

The enthalpy change of condensation of water is negative and here the entropy change also negative and the process is nonspontaneous.

The enthalpy change of a reaction or a phase change is the change in heat energy absorbed or evolved. The change in enthalpy is dependant on the nature of process as well on temperature of the system.

Condensation of water is the change of its liquid state into solid state. Thus water freezes to form ice. In this process, the system is getting more ordered structure in the solid state and thus, the entropy of the system decreases means the entropy change is negative.

Now, when converting liquid to solid heat is released by the system. Hence, enthalpy change, delta H is negative. A process becomes spontaneous only f its Gibbs energy is negative.

Here we have both negative entropy and enthalpy so make Gibbs energy negative higher temperature is needed.

Condensation of a substances is taking place at very low temperature and thus gibbs energy become positive. Therefore the process is  nonspontaneous.

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Your answer is A. a neutron

A rod, plate, or tube containing a material such as hafnium, boron, etc., used to control the power of a nuclear reactor. By absorbing neutrons, a control rod prevents the neutrons from causing further fissions.

Answer:

A. a neutron

Explanation:

Boron-10 is commonly used as a neutron absorber due to the high neutron cross section of isotope 10B.

hope this helps!

Answer:

the answer for a is 2mol/dm3

Explanation:

n=0.2mol of NaOH

v=100cm3

[tex]v = \frac{100}{1000} \\ v = 0.1 {dm}^{3} \\ concentration = \frac{n}{v} \\ = \frac{0.2}{0.1} \\ = 2mol {dm}^{3} [/tex]

Answer:

1. Draw a pencil line across the filter paper, 1 - 2 cm from the bottom.

2. Use a pipette or capillary tube to add small spots of each ink to the line on the paper.

3. Place the paper into a container with a suitable solvent in the bottom. For example, water. Make sure the water level is below the pencil line.

4. Allow the solvent to move through the paper, but remove the chromatogram before it reaches the top.

5. Allow the chromatogram to dry.

Extras : preferably use a lid to prevent evaporation and use a pencil or any suitable device to prop the paper in place, make sure the sides of the paper doesn't touch the sides of the beaker.

Answer:

As per Provided Information

Distance travelled by sound impulse through an aluminium rod is 1500 metres .

We have been asked to determine the time taken by the sound impulse to travel through aluminium rod .

As we know

Speed of sound in aluminium rod is 5100m/s .

Using Formulae

[tex] \boxed{\bf \: Time \: taken_{(Sound \: impulse)} = \cfrac{distance \: travelled \: by \: sound \: impulse}{speed \: of \: sound \: impluse}}[/tex]

Substituting the value and we obtain

[tex] \sf \qquad \longrightarrow \: Time \: taken_{(Sound \: impulse)} = \dfrac{1500}{5100} \\ \\ \\ \sf \qquad \longrightarrow \: Time \: taken_{(Sound \: impulse)} = \cancel\dfrac{1500}{5100} \\ \\ \\ \sf \qquad \longrightarrow \: Time \: taken_{(Sound \: impulse)} = 0.29 \: s[/tex]

Therefore ,

So, your answer is 0.29 s .

Answer:

Fluid power systems perform work by a pressurized fluid bearing directly on a piston in a cylinder or in a fluid motor. A fluid cylinder produces a force resulting in linear motion, whereas a fluid motor produces torque resulting in rotary motion. Within a fluid power system, cylinders and motors (also called actuators) do the desired work. Control components such as valves regulate the system.

Answer:

The oceans are the very foundation of human life. life itself arose from the oceans. The oceans are vast, covering about 140 million square miles, some covering 72 percent of the earth's surface.

Explanation:

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Answer:

1. the imbalance of positive and negative charges.

Explanation

The electric dipole moment is a measure of the separation of positive and negative electrical charges within a system, that is, a measure of the system's overall polarity.

2.The atmosphere has recently changed and is mostly greenhouse gases, which have a large impact on climate

Explanation.

They cause climate change by trapping heat, and they also contribute to respiratory disease from smog and air pollution. Extreme weather, food supply disruptions, and increased wildfires are other effects of climate change caused by greenhouse gases.

3.melted ice caps

explanation

A stronger greenhouse effect will warm the ocean and partially melt glaciers and ice sheets, increasing sea level. Ocean water also will expand if it warms overexcessively.

4.Yes, the greenhouse effect keeps the planet warm enough to support life.

Explanation

The greenhouse effect is a good thing. It warms the planet to its comfortable average of 59 degrees Fahrenheit (15 degrees Celsius) and keeps life on earth, well, livable. Without it the world would be a frozen, uninhabitable place, more like Mars.

5.nitrous oxide.

Explanation

There are several different types of greenhouse gases. The major ones are carbon dioxide, water vapor, methane, and nitrous oxide. These gas molecules all are made of three or more atoms. The atoms are held together loosely enough that they vibrate when they absorb heat.

The phrase which  describes a dipole moment is the separation of positive and negative charges,the  statement best summarizes the presence of greenhouse gases in the atmosphere , the atmosphere is mostly non-greenhouse gases, but the small amount of greenhouse gases in an ecosystem have a large impact on climate.

What is an ecosystem?

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 system 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 .The more glaciers is the consequence is due to increased production of greenhouse gases.The greenhouse effect keeps the planet warm enough to support life. Nitrous oxide molecule acts as a greenhouse gas.

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The east to west daily motions of stars, planets, the Moon, and the Sun are caused by the rotation of the Earth on its axis. The Earth and all the planets revolve around the Sun on circular orbits. This produces the change in constellations observed from one time of year to the next.

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Tautomers are isomers composed of the same atoms but with different electronic and molecular structures. The most stable tautomeric form is attached.

Tautomery is a special case of isomery produced by the change in the position of one or more atoms in the molecule. This change in position modifies the molecular electronic distribution, and hence, the molecular structure.

In solution, isomeres called tautomers are in equilibrium, and the constant interconversion is called tautomerization. Both molecules have the same type and quantity of atoms.

In the proposed example, the product has the molecular formula C₁₀H₁₆O₃. Isomeric molecules must have 6C, 16H, and 3O. However, the distribution of these atoms varies, leading to a change in the product molecule structure.

In the attached files you will find an example. You should check if this is the same example as yours.  

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Answer:

i think your answer is d  

Explanation:

sorry if it is wrong

Answer:

17.78 gm

Explanation:

2 H20 mole weight = 36 gm

   which leads to 32 gm   O2

36 / 32   =  20 / x      x = 17.78 gm

Answer:  

Therefore, 12 moles of hydrogen makes 8 moles of ammonia.

Using the proportions of the amount of the molecules, we can convert from any reagent or product to any other reagent or product. In the context of this reaction, for every mole of N2 and every 3 moles of H2 we obtain 2 moles of NH3.

Explanation:

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