science- atmospheric layer

34,213 results

science- atmospheric layer

why is the mesosphere important to the atmosphere?

global warming science

1a (5 points possible) A schematic of a two layer model of the Earth-atmosphere energy balance is shown in the image below. The atmosphere is assumed to be transparent to solar radiation, and the total solar radiation absorbed by the surface is written in terms of the emission...

science help PLS

Examine the following diagram. Place the labeled layers in order from youngest to oldest. Diagram showing a section of rock strata. The bottommost layer is labeled 'A'; the layer directly on top of layer A is labeled 'B'; the layer directly on top of layer B is labeled 'D'; a ...

chemistry

1)when benzoic acid and quinine is dissolved in CH2Cl2 and added 2M NaOH, what is the organic layer and what is the aqueous layer? a)and by adding another 2M NaoH to the organic layer, what is the new aqueous layer and organic layer? b)from (1), if we add CH2Cl2 to the aqueous...

organic chemistry

Why does the alkyl halide layer switch from the top layer to the bottom layer at the point where water is used to extract the organic layer?

science

what rock is it the plants in a swamp die and are buired layer upon layer coal

Science ASAP

A geologist is studying a layer of soil in the Sahara. The soil layer contains little humus but a lot of clay and other rock particles. Which soil layer is it? A) A horizon B) B horizon C) C horizon D) bedrock

Org. Chem.

We did an experiment on the synthesis of n-butyl bromide using n-butyl alcohol and H2SO4. Why does the alkyl halide layer switch from the top layer to the bottom layer at the point where water is used to extract the organic layer? Please Help.

solar homework

We have discussed that a bare crystalline silicon surface contains many defects which act as SRH recombination centers. How can the surface recombination at the air/n-silicon interface be reduced? Note that you can mark more than one answer. By decreasing the doping of the n-...

Orgo

Assume that during an extraction experiment you have lost track of which layer is the aqueous layer. How could you determine which layer is which by the use of a simple test?

science(chemistry) -Q for Dr.Bob

solvent layer: 1 solid precipitate: no I ran the solvent layer I got in my unknown in the GC and I had sharp peaks in the beginning but at about 4 min on the polar column, I got a broad peak that tailed off considerably. question is, Is it water? I'm not sure how water would ...

Science

escribe why there are different layers in the atmosphere what are the charecterestics of them which one has the ozone layer which layer is the coldest which is the hottest which one holds the aurora borealis

Science

The upper layer of the ocean contains an abundance of microorganisms that carry out photosynthesis, such as algae. Why would this make the upper layer rich in oxygen?

Chemistry

In an organic chemistry lab, why is the organic layer usually the upper layer in the separatory funnel while the aqueous layer is usually the bottom layer?

Organic Chem Help

You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is the top layer Ethylene ...

Chemistry Urgent Help and Check Please!

a) You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is the top layer Ethylene...

science check please

John has a barometer for measuring atmospheric pressure as he climbs Mt. Everest . the higher he get the higher the pressure reading . is this a result he should except ? A : Yes atmospheric pressure and height are related B : No , there is no pressure from air on Mt. Everest ...

Organic Chem Help :(

For each of the solvents below, indicate whether it will be the top or bottom layer when carrying out extraction of an aqueous layer of density 1.05 g/ml. a) chloroform (bottom layer) b) hexane =????? c) toluene =?????

science (chem)

What would the best way to determine the organic layer from the aqueous layer in a extraction procedure? ~would it be to add a few drops of water to each layer and see what happens? or is there a better way since this procedure of adding a few drops of water to the extraction ...

Organich Lab Help Please!!!!!!!!

a) You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is the top layer Ethylene...

7th grade science

Q: An igneous intrusion cuts through three layers of sedimentary rock. which rock is the youngest? and why? A: A) the igneous intrusion B) the top layer of sedimentary rock C) the middle layer of sedimentary rock D) the bottom layer of sedimentary rock

math

thomas wants to build a seven layer brick wall. the bottom layer has 20 bricks and each layer of the wall that goes up has two less bricks than the layer below it. if each brick costs .50 cents to cement how money will Thomas spend on the wall ?

Material Science

Explain how the five labeled ocean gyres in Fig. 6.38 arise from the atmospheric general circulation, being explicit about vertical atmospheric circulation cells and surface pressure centers.

computer science

can please help me to fill this: In the TCP/IP model, the best path through the network is determined at the ______________ layer. In the OSI model, the same function is carried out at the ______________ layer.

science

answer check?? 1) What two tissues are found within a vein? Xylem and Phloem. 2) What does the word "Mesophyll" mean? Middle Leaf. 3) What two layers of the plant contain chloroplasts? Palisade layer and Spongy layer. 4) The outermost layer of a cell: Epidermis. 5) The waxy ...

anatomy

I am so confused about this question but What is the principal function of the subcutaneous layer of the skin? The subcutaneous fat layer, or hypodermis, bridges between the overlying dermis and the underlying body constituents. In most areas of the body this layer is ...

Science

Ozone is known to cause respiratory problems in humans and to damage plants. However, the ozone layer also protects Earth. Explain the locations ozone can be found, how ozone is helpful, how it is harmful, and what causes the depletion of the ozone layer.

7th grade science

1) what is the hard,strong layer of bone called? 2) what is the smooth flexable layer of tissue covering the ends of bones? 3) what kind of joints are found in the skull and pelvis? 4) what type of muscles make up the majority of muscles in your body? (no websites only answers)

Chemistry

During an experiment involving separation, you forget to label your beakers and you are unsure of which beaker contains the aqueous layer and which contains the organic layer. How could you quickly and efficiently determine which one is the aqueous layer?

Science

In lab the other day we did an acid/base extraction to separate mixtures. The top layer of the mixture is the organic layer, which consists of diethyl ether and fluorine. The bottom layer is considered to be the aqueous layer, which consists of water and benzoate anion. The ...

Math, algebra 2

You are stacking soup cans for a display in a grocery store. Your manager wants you to stack 120 cans in layers, with each layer after the first having one less can then they layer before it. One can should be in the top layer. If you use all 120 cans, how many cans should be ...

science

I am just wondering how many people know that an egg actually does have a protective jelly layer. Me!Why? not you I got the answer wrong because somebody told me no an egg doesn't have a jelly layer so I want that person to now know! OK LOL!

Chemistry Urgent Help Please!

You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in the above mixture. Assuming the...

Organich Lab Help Please!!!!!!!!

You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml of water. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in the above mixture. ...

Organic chem

i have no idea how to do this! please help me :) 1a. When sodium benzyloxide is reacted with excess acetic anhydride it produces benzyl acetate and byproducts. What are those byproducts? If extracting with dichloromethane, what could be added to the aqueous layer to sequester ...

science

what could you conclude about the two rock layers if paleontologists would find a trilobite fossil in a rock layer at the top of a hill in South America, then find the same kind of fossil in a rock layer at the bottom of a cliff in Africa

OChem

A mixture of fluorene and benzoic acid is dissolved in diethyl ether and mixed thoroughly with an aqueous solution of NaOH. After the layers separate, what will each of the layers contain? Label the layers. Indicate the main components, not species that could be present in ...

CHEMISTRY

The atmosphere contains about 6.8×1013 moles of ozone. If this amount of ozone gas is compressed into a thin layer around the globe (the radius of Earth is 6370 km) at STP (Standard Temperature (0°C) and Pressure (1.0 atm.)), how thick will the layer be in millimeter? One ...

Organic Chemistry

1a. When sodium benzyloxide is reacted with excess acetic anhydride it produces benzyl acetate and byproducts. What are those byproducts? If extracting with dichloromethane, what could be added to the aqueous layer to sequester the byproducts? Which layer would be on top, the ...

Science

A fossil for an extinct organism is found in layer B. A fossil for another extinct organism, very similar to the first, is found in layer C. What might be the relationship between these two organisms. Im so confused, can someone help.

Earth Science - NEED HELP QUICK

What is the thickness of the layer from 1000 - 850 mb if the mean temperature of the layer is 2 C? From what it says in my textbook it seems as if mb = hPa so all you do is 850 - 1000 = -150 hPa but I am pretty sure that is wrong because what do you do with the temperature?? ...

7th grade science

1) what makes bones hard? 2) what is the hard,strong layer of bone called? 3) what is the smooth flexable layer of tissue covering the ends of bones? 4) what kind of joints are found in the skull and pelvis? 5) what type of muscles make up the majority of muscles in your body...

Earth Science

A layer of sandstone is found on top of a layer of limestone in a geologic cross section. What does this tell you about how the sea level changed in that area? I know how metamorphic rocks are formed but how are metamorphic rocks formed into other metamorphic rocks?

CHEM Help please Thanks

8) Explain exactly how you would perform the following laboratory instructions: -a) “Wash the organic layer with 5.0 mL of 1 M aqueous sodium bicarbonate.” -b) “Extract the aqueous layer three times with 2 mL portions of methylene chloride.” 10) What should you do if ...

Physics

an open tank contains a layer of oil floating on top of a layer of water (of density 1000 kg/m3) that is 3.0 m thick, as shown. What must be the thickness of the oil layer if the gauge pressure at the bottom of the tank is to be 9.1×104 Pa? The density of the oil is 880 kg/m3?

extraction

How to distingush organic layer and aqueous layer? The organic layer is the one on top. Most organic solvents are less dense than water. (NOte: Non-hydrocarbons such as chloroform, methylene chloride, carbon tetrachloride etc are more dense than water.)

physics

Animals in cold climates often depend on two layers of insulation: a layer of body fat [of thermal conductivity 0.200 W/mK] surrounded by a layer of air trapped inside fur or down. We can model a black bear (Ursus americanus) as a sphere 1.50 m in diameter having a layer of ...

maths science,sst,hindi,english,economics

one liter of water at atmospheric pressure ismixed with 9 liter of water of 25 degrees at an atmospheric pressure in an insulated tank .find the temprature of tank.options are 1)25 2)32.5 3)30 4) 24........pls. help

physics

Consider three layers of a wall. The first layer is plaster 1.0 cm thick (R = 0.033 SI units), the second layer is fiberglass insulation 8.9 cm thick (R = 2.97), and the outside layer is wood 3.0 cm thick (R = 0.33). What is the heat loss through one square meter of wall if ...

chemistry

In which one of the following processes is ΔH = ΔE? a. 2HI(g) → H2(g) + I2(g) at atmospheric pressure. b. Two moles of ammonia gas are cooled from 325°C to 300°C at 1.2 atm. c. H2O(l) → H2O(g) at 100°C at atmospheric pressure. d. CaCO3(s) → CaO(s...

chemistry

After synthesizing your alkyl halide, Which layer will be the organic layer?

Science

A family is planning to build a raised planting area using a blend of peat moss, mulch, and a rich organic soil in which to grow the plants. they have been told first to place on the ground a layer of material that will allow for a proper drainage each time the plants are ...

Organic

Which layer is likely to be on the bottom in each case? a. Sodium chloride layer or a layer containing a high-density organic compound dissolved in methylene chloride (d  1.4 g/mL) b. Sodium chloride layer or a layer containing a low-density organic compound dissolved in ...

biology

true or false soil in the taiga has a top layer of rich humus and a deeper layer of clay.

science

calculate the depth of salt water lake,if the pressure at its base is 16 times the atmospheric pressure.the density of salt water lake is 1,050kg m-3 and acceleration due to gravity is 10 ms-2.the atmospheric pressure is 10N cm-2

Science

What is the boiling point of ethanol when the atmospheric pressure is 60kPa? I decided to repost this ? under Science instead of Chemistry. Thanks.

Physics

Consider 3 layers of a wall. The first layer is plaster 1.0 cm thick(R=0.033 SI units), the second layer is fiberglass insulation 8.9 cm thick (r=2.97), and the outside layer is woodd 3.0 cm thick(0.33). What is the heat loss through one square meter of wall if the inside ...

Science

How does the C horizon form? Rainwater washes clay minerals from the A horizon to the C horizon Plant roots weather pieces of rock plants add organic material to the soil bedrock weathers, and breaks up into soil particles.** What makes up soil besides rock particles, minerals...

science

what is a layer of organicsediment??

Science

What is the 3 layer of matter ?

atmospheric pressure

How many moles of gas must be forced into a 3.9 ball to give it a gauge pressure of 9.8 at 25? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.5 so that the total pressure in the ball is 24.3 . Express your answer using two ...

Chemistry

when benzoic acid and quinine is dissolved to dichlromethane and 2M NaOh, what is the organic layer being formed? (i have sodium benzoate as aqueous layer of the product. is this right?)

science

in which layer are satellites located?

science

Ozone layer formed

Science

Which is the first layer of the atmosphere?

science

The ozone layer is located

Chemistry-Balancing equations

Write a single, balanced equation for the formation of ozone from the high-temperature reaction of atmospheric nitrogen and atmospheric oxygen.

Science

Why can't the ozone layer be higher in the atmosphere?

science

what is the outermost layer of earth's surface

science

what is the outer layer of the hair shaft?

Science

What is another name for atmospheric conditions?

SCIENCE

WHAT CAUSES ATMOSPHERIC PRESSURE?

physics

A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 19.0{\rm cm} , giving it a charge of -13.0\mu {\rm C} Find the electric field just outside the paint layer. Find the electric field 8.50{\rm cm} outside the surface of the ...

CHEMISTRY!!

Hi I need help doing this question! Thank you in advance! Suppose that a mixture contains 1,4-dimethoxybenzene and benzoic acid. An experiment is performed in which this mixture is dissolved in diethey ether, the solution is mixed with aqueous soium hydroxide, and the aqueous ...

science

Which layer of the atmosphere does the greenhouse effect occur in? Thanks!

Physical Science

How does the ozone layer cause global warming?

science

what layer of the earth did the chile miners reach

science

how does the thinning of the ozone layer protect your health?

Science

A family is planning to build a raised planting area using a blend of peat moss, mulch , and a rich organic soil in which to grow the plants. They have been told first to place on the ground a layer of material that will allow for a proper drainage each time the plants are ...

Science-bobpursley/Ms.Sue

1. A trilobite is considered an index fossil because this organism existed during a limited period in Earth's history. That means that any fossil located in a layer of rock beneath a layer containing trilobite fossils is ____________ than a trilobite. 2. According to this ...

physics

Consider the Earth and a cloud layer 600 m above the planet to be the plates of a parallel-plate capacitor. (a) If the cloud layer has an area of 2.0 km2 = 2000000 m2, what is the capacitance?

Math IN URGENT NEED OF FEEDBACK

If the temperature is constant, then the atmospheric pressure P (in pounds/square inch) varies with the altitude above sea level h in accordance with the law given below where p0 is the atmospheric pressure at sea level and k is a constant. P = p0e-kh If the atmospheric ...

science

which layer of the atmospher has the highest density of gas molecules

Science

What is the difference between the lithosphere and the asthenosphere? In which layer is each located?

science

If the absolute pressure of gas is 550.280 kPa, it's gage pressure is what? Subtract atmospheric pressure from that to get gage pressure. Atmospheric pressure varies with altitude and weather, but the average atmospheric pressure, at sea level, is 101.325 kPa. 550.280 - 101....

Science

The middle layer of the earth, made of solid, hot rock, is the what?

science

What layer of the atmosphere acts like a giant magnet? What does it attract?

earth science

what makes scientists think that the ozone layer is disappearing?

Science- chemistry

After extraction with bicarbonate in which layer is the benzoic acid?

PHYSICS

Calculate the work done against external atmospheric pressure when 1 g of water changes to 1672cm3 of steam. Take the atmospheric pressure as 1.013×105Nm−2

PHYSICS

Calculate the work done against external atmospheric pressure when 1 g of water changes to 1672cm3 of steam. Take the atmospheric pressure as 1.013×105Nm−2

Science

Since industrial revolution, what is the increased atmospheric CO2 of the US? 10% 30% 50% 90%

Science

Why does atmospheric pressure usually decrease when humidity increases?

Organic Chem I Lab

I had to react 1-propanol with NaBr and H2SO4. I refluxed for one hour and when attempting to separate out the product (product was supposed to be 1-bromopropane) via sep funnel either could no longer distinguish between the organis layer and the aqueous layer, or there was ...

Science

Explain why the inside of cans are coated with a thin layer of tin or plastic.

science

what is the phsical layer of earth that is dividedunto tetonic plates is called the _____________

science geo

I have to write a brief geological history of a region starting with the oldest events schist being the earlisest and then i have sandstone and gabbro, could you see if what i have wrote is correct The schist would have probably originally been deposited first as a layer of ...

Earth Science

If we were to increase atmospheric CO2 fivefold by the burning of fossil fuels, how much would the atmospheric oxygen concentration change relative to what it is today? Assume: (a) CO2 concentration today is 400 ppm, (b) the atmosphere today is made of 21% oxygen, and (c) the ...

math

in a store all the oranges are stacked in triangular pyramids, each layer of oranges is in the shape of an equilateral triangle and the top layer is an single orange. How many oranges are are in a stack ten layers high

physical science

what generally happens to atmospheric pressure on a windy day

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