Friday
October 24, 2014

Search: science- atmospheric layer

Number of results: 25,855

science- atmospheric layer
why is the mesosphere important to the atmosphere?
December 24, 2012 by Anonymous

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 ...
March 26, 2014 by JuanPro

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...
March 31, 2009 by Nancy

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?
October 24, 2011 by Ivy

science
what rock is it the plants in a swamp die and are buired layer upon layer coal
December 20, 2006 by Jose

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
December 6, 2013 by Mileena

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.
November 30, 2009 by CMM

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?
October 5, 2009 by Carrie

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 ...
April 20, 2009 by ~christina~

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?
August 14, 2014 by Conner

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?
November 16, 2011 by Rachel

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 ...
September 14, 2014 by Anonymous

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 ...
September 9, 2007 by ~christina~

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...
September 14, 2014 by Anonymous

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 =?????
September 13, 2014 by JuYoung

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
November 18, 2012 by Kate

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...
September 15, 2014 by Anonymous

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 ?
April 6, 2010 by Alexander

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.
October 4, 2013 by Joy

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.
February 9, 2011 by Sue

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 ...
March 20, 2013 by sami doodles :-)

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 ...
May 19, 2007 by blondie

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)
January 25, 2010 by mary

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?
October 19, 2011 by Rachel

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 ...
February 4, 2013 by Kayla

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!
November 9, 2006 by kaylmur

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...
September 14, 2014 by Anonymous

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. ...
September 15, 2014 by Anonymous

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 ...
August 7, 2012 by Tasneem

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
February 26, 2012 by cassie

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 ...
October 20, 2011 by David

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 ...
March 5, 2010 by HELP!!!!!

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 ...
August 6, 2012 by Tasneem

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...
January 24, 2010 by mary

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?
November 28, 2007 by Camron

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 there is ...
December 5, 2013 by Amy

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?
April 17, 2014 by Brady

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.)
August 21, 2007 by bb

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 ...
December 2, 2009 by AE

chemistry
After synthesizing your alkyl halide, Which layer will be the organic layer?
April 16, 2009 by Hola

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...
August 15, 2009 by seth

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 ...
October 15, 2010 by jim

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 ...
September 29, 2014 by chemNerd

biology
true or false soil in the taiga has a top layer of rich humus and a deeper layer of clay.
June 6, 2010 by nene

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.
April 14, 2012 by Gerald

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 ...
October 8, 2010 by Jessica

science
what is a layer of organicsediment??
May 7, 2008 by briyanna brinson

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 ...
November 19, 2012 by Anonymous

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?)
April 1, 2009 by Nancy

science
in which layer are satellites located?
December 25, 2012 by Anonymous

science
Ozone layer formed
January 15, 2013 by abdulwasay

Science
Why can't the ozone layer be higher in the atmosphere?
January 31, 2009 by Penny

science
what is the outermost layer of earth's surface
March 29, 2009 by sara

science
what is the outer layer of the hair shaft?
February 5, 2010 by mic

Science
What is another name for atmospheric conditions?
May 18, 2008 by Samantha

SCIENCE
WHAT CAUSES ATMOSPHERIC PRESSURE?
May 5, 2013 by HASNAIN

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 ...
February 1, 2013 by Julie

science
Which layer of the atmosphere does the greenhouse effect occur in? Thanks!
May 12, 2008 by Charlotte

Physical Science
How does the ozone layer cause global warming?
June 7, 2010 by John Henry

science
what layer of the earth did the chile miners reach
December 4, 2010 by theresa

science
how does the thinning of the ozone layer protect your health?
January 30, 2012 by dina

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 ...
June 3, 2009 by Mandy

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 ...
December 12, 2013 by Anonymous

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?
October 7, 2012 by B

science
which layer of the atmospher has the highest density of gas molecules
April 28, 2010 by NeNe

Science
What is the difference between the lithosphere and the asthenosphere? In which layer is each located?
September 11, 2012 by Hannah

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 ...
April 13, 2011 by Anonymous

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....
July 1, 2005 by Naomi

Science
The middle layer of the earth, made of solid, hot rock, is the what?
December 17, 2007 by Renee

science
What layer of the atmosphere acts like a giant magnet? What does it attract?
September 30, 2008 by Avery

earth science
what makes scientists think that the ozone layer is disappearing?
February 13, 2011 by kristina reingand

Science- chemistry
After extraction with bicarbonate in which layer is the benzoic acid?
November 6, 2012 by Lisa

Science
Since industrial revolution, what is the increased atmospheric CO2 of the US? 10% 30% 50% 90%
November 11, 2010 by Stormy

Science
Explain why the inside of cans are coated with a thin layer of tin or plastic.
July 23, 2009 by hayden

science
what is the phsical layer of earth that is dividedunto tetonic plates is called the _____________
October 4, 2010 by rae

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 ...
November 30, 2010 by Meredith

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 ...
April 20, 2007 by Bex

physical science
what generally happens to atmospheric pressure on a windy day
June 30, 2012 by lora

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
December 8, 2013 by Jennifer

Environmental Science
Nonliving and living factors that contribute to or are affected by the problem of the ozone layer?
April 4, 2010 by Keza

computer science
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. A network access network B network access transport C internet network D internet transport E ...
February 13, 2011 by Sue

chemistry
We can build the model in a spreadsheet simulating ten layers in the filter. For each layer we calculate the headloss with Carmen-Kozeny and calculate from this the pressures as a function of the place in the filter. Calculate the headloss and the actual pressure in each layer...
July 11, 2014 by Anonymous

precalculus
The earth's atmospheric pressure, P, in terms of height above sea level is often modeled by an exponential decay function. The pressure at sea level is 1013 millibars and the pressure decreases by 14% for every kilometer above sea level. (a) What is the atmospheric pressure at...
March 3, 2011 by amanda

Chemistry
What is going on in the hexane layer at the end of the Group I anion experiment? (when color of hexane layer is yellow you have Br- and when it is brown or purple you have I-.) please explain
April 12, 2009 by David

Chemistry
What will happen when 100 ml of diethyl ether are added to 100 ml of water and thoroughly mixed? a.) Water will form a separate layer on top of the ether layer. b.)The temperature of the mixture will significantly increase. c.)There will be a chemical reaction between ether ...
August 12, 2012 by Anna

PHYSICS
Consider a one layer atmosphere for the planet Venus. 19% of incoming solar radiation is absorbed by the atmosphere. 99% of the outgoing radiation is absorbed by the atmosphere. The incoming radiation, E, as measured by satellite is 615 Wm-2. 1) Derive two equations, one for ...
January 24, 2010 by Bubbles

science/atmospheric heating
name two ways that air gets heated
October 15, 2009 by keshawn hall

geo/science
I have to write a brief geological history of a region starting with the oldest events with schist being the oldest it says i should not speculate but concentrate on the evidence have what i wrote on the right lines if not can you give me some pointers The schist would have ...
April 20, 2007 by Bex

HELP PLEASE! Physics!
SO CONFUSED!!! Why can't submarines go to the bottem of the ocean? It is to do with pressure gradient Total nonsense. Subs go to the bottom of the ocean each time they sink. Now if there is an inversion layer, either thermal or salinity, they can "float" on that layer, but ...
May 7, 2007 by Georgia

Physical Science
What is the purpose of the layer of copper or aluminum on the bottom of a piece of stainless steel cookware?
March 10, 2008 by Rachel

science
what is the largest layer of earth's surface , composed mostly of silicon,oxygen,magnesium,and iron
March 29, 2009 by sara

science
How deep is the wind mixed layer in the Atlantic ocean is the water column stable or unstable
February 10, 2013 by shela

science
Do temperatures get warmer or colder as you move from the lower stratosphere to the top of that layer?.And how big is the change?.
April 9, 2013 by dinh

earth science
In what layer of the atmosphere do temperatures rise with altitude? A. Troposphere B. Mesosphere C. Mesopause D. Stratosphere is it d ?
September 11, 2013 by sergey

Math
1 Catriona is deciding how large of a cake to order for a party. She can choose from a 1-layer cake that serves 10 people, a 2-layer cake that serves 20 people, a 3-layer cake that serves 40 people, or a 4-layer cake that serves 65 people. The cost of the cake increases with ...
March 15, 2014 by Zack

science
what does monitoring information indicate about trends in amount of atmospheric carbon dioxide?
February 28, 2010 by allan

Grade 5 Science
Do temperatures get warmer or colder as you move from the lower stratosphere to the top of that layer and how big is the change?
September 18, 2008 by Jules

science
largest layer of earth's surface, composed mostly of silicon, oxygen,magnesium,and iron is called____________
March 28, 2009 by sara

science
Name some ways the wind and rain change the Earth's top layer(soil).tell why?
October 22, 2010 by tim

lab chem
If toluene (density 0.87) wre used to extract ethylene bromohydrin (density 2.41) from an aqueous solution, a. Could you be certain that the organic solution would form the upper layer? b. by what test could you identify the nonaqueous layer.
September 23, 2008 by Poole

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members