# osmotic pressure chemistry

10,993 results, page 4
1. ## Chemistry

What is the pressure (in atmospheres) of the gas inside the container connected to an open-end, mercury-filled manometer as shown in the picture? The atmospheric pressure is 0.95atm. l----l | (G) l | l - --- l Hg l Hg *18cm - - --- Hg Hg HgHgHgHg what

asked by leo on October 21, 2007
2. ## Chemistry

This is a chemistry lab on boiling point, and I need some help with these questions!- Thanks! (Info): You are going to take a trip. On this trip you will be stopping at different sites with varying altitudes. At each site you will compare the change in

asked by Angel on May 30, 2008
3. ## AP Chemistry

In a ﬁt of boredom, a chemistry teaching assistant swallows a small piece of solid dry ice (CO2). The 8.9 g of dry ice are converted very quickly into gas at 311 K. Assuming the TA’s stomach has a volume of 1.5 L, what pressure is exerted on his

asked by Jose on January 17, 2013
4. ## Math

Lee has two tests to study for: Chemistry and French. She plans to study for up to 13h in total. She will spend at least 4 hours studying Chemistry and up to 6 hours studying French. Let x represent the number of hours she will spend studying Chemistry,

asked by Elle on July 24, 2009
5. ## Chemistry

If the same solute is dissolved in two different solvents to the same concentration and the same temperature, the osmotic pressure ____ will be the same for both. will be different. may be the same or different, depending on the solute. will be lower in

asked by Anonymous on February 25, 2009
6. ## heat

if the absolute pressure of a gas is 550.280 kPa, its gage pressure is ? A.101.325kPa b.277.280kPa c.448.955kPa d.651.605kPa Gauge pressure - atmosphericpressure=absolute pressure where atmospheric pressure varies, but standard atmospheric pressure is

asked by Andre on July 15, 2005
7. ## CHEM LAB!!! Must finish!!!

Thanks to DrBob222 for the help, but it only answered a few questions! PLEASE help answer, anyone? This is a chemistry lab on boiling point, and I need some help with these questions!- Thanks! (Info): You are going to take a trip. On this trip you will be

asked by Angel on May 31, 2008
8. ## Soxhlet extractor

Does anyone know what kindo of chemistry lab course(Organic, Physical, etc.) might use a soxhlet extractor in the experiments? Sheryl http://en.wikipedia.org/wiki/Soxhlet_extractor Certainly Organic It is used in organic chemistry. The URL provided by

asked by Sheryl on October 9, 2006
9. ## maths

In a class of 80 students, 53 study Art, 60 study Biology, 36 study Art and Biology, 34 study Art and Chemistry, 6 study Biology only and 18 study Biology but not Chemistry. Illustrate the information on a Venn diagram. Determine the number of students who

asked by Kwame on September 20, 2016
10. ## Help please? Chemistry

At a certain temperature and pressure, 0.20 mol of carbon dioxide has a volume of 3.1 L. A 3.1-L sample of hydrogen at the same temperature and pressure ____. I think it's supposed to be "contains the same number of molecules" but I'm not sure. And there's

asked by Kit on May 27, 2009
11. ## Math

Out of 300 student in final year in senior secondary school, 200 are offering biology and the150 offering chemistry how many are offering neither biology nor chemistry

asked by Emmanuel on January 24, 2016
12. ## Chemistry

How many moles of gas must be forced into a 4.8L tire to give it a gauge pressure of 30.8psi at 30 degrees celsius? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.5L so that the total pressure in the tire is

asked by Claire on February 20, 2013
13. ## Science

3. How does the study of science benefit society? A. Non scientists in society often use the same experiments conducted by scientists in the laboratory. B. The study of science helps slow down a fast paced society. C. The study of science keeps more people

asked by Me on August 29, 2018
14. ## chemistry

A 250 L sample of oxygen is collected over water, which has a pressure of 34mmHg. If the total pressure for the container is 760.0mmHg pressure. What is the pressure of the oxygen gas alone?

asked by Anonymous on June 26, 2018
15. ## Math

There are 100 students in a class. It is found that 60 students study Mathematics, 45 students study Physics and 35 students study Chemistry. Moreover, 20 students study Mathematics and Physics, 15 students study Physics and Chemistry, 25 students study

asked by Omkar on May 29, 2018
16. ## Chemistry (pleas help!)

a stressed chemistry student is hyperventilating into a paper bag. The student stops to wip his brow after a few breaths, and the bag is at 5.7 KPa and the temperature in the lecture hall is 24 degrees C. The bag is 0.75 L full. The student then goes at it

asked by Celine on March 24, 2011
17. ## chemistry

How many moles of gas must be forced into a 3.1L ball to give it a gauge pressure of 9.8psi at 22degrees C? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.5psi so that the total pressure in the ball is

asked by Jess on April 28, 2012
18. ## 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

asked by Anonymous on November 19, 2012
19. ## chemistry

How many moles of gas must be forced into a 3.7L ball to give it a gauge pressure of 8.4psi at 23degrees C? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.6psi so that the total pressure in the ball is

asked by Jessica12 on April 28, 2012
20. ## Maths

In a survey of 200 students of a school, it was found that 60% study mathematics, 45% study physics, 35% study chemistry, 20% study mathematics and physics, 15% study physics and chemistry, 25% study chemistry and mathematics and 10% none of these

asked by Sabah on September 1, 2015
21. ## Chem

Would you please tell me if these are right? A sample of helium has a volume of 325 ml and a pressure of 655 mm hg. What will be the pressure if the helium is compressed to 125 ml (t and n are constant) I got 1703 mm of Hg A 75.0 ml sample of oxygen has a

asked by Jason on October 24, 2010
22. ## chemistry

β-Galactosidase (β-gal) is a hydrolase enzyme that catalyzes the hydrolysis of β-galactosides into monosaccharides. A 0.474 gram sample of β-galactosidase is dissolved in water to make 0.144 L of solution, and the osmotic pressure of the solution at 25

asked by can i have some help? on August 30, 2017
23. ## Maths

In a class of 80 students,53 study Art,60 study biology,36 study Art and biology,34 study Art and chemistry,6 study biology but not chemistry.Illustrate the information on a Venn diagram.Determine the number of students who study Art only And Chemistry

asked by Nana Adwoa on February 8, 2017
24. ## engineering

A saturated soil sample under CU test was subjected to a confining pressure of 200 kPa with back pressure (pore pressure) of 50 kPa. What would be the value of pore pressure if the confining pressure was raised to 400 kPa without drainage? If the pore

asked by WYNN on December 4, 2013
25. ## Ap Biology

We performed a lab that studied osmosis in potato cells. We put cylinders of potato into varying molar Sucrose solutions and after recording different types of data were able to find the osmotic and water potential of the sucrose solution and potato cells.

asked by Jessie on November 25, 2007
26. ## math

Suppose there are 70 students in an examination with the students writing at least one of the subjects; Chemistry, Physics and Biology. Thirty(30) students offer Physics, 33 offer Chemistry and 40 offer biology, 10 students offer both Physics and

asked by Sesan on August 27, 2018
27. ## physics

if i take a fluid in a container open to the atmosphere and raise its height what happens to the hydrostatic pressure? I thought it would decrease because pressure decreases with altitude but the answer says that it would increase. I just assumed it would

asked by joecool on June 27, 2017
28. ## Chemistry

Compare the natural chemistry that takes place in the environment with the chemistry that takes place due to manmade factors like pollution. Discuss the effect of pollution at the local, regional, national, and global level.

asked by Jenn on February 20, 2012
29. ## Biology

An animal cell that is surrounded by fresh water will burst because osmotic pressure causes... A. water to move into the cell B. water to move out of the cell C. solutes to move into the cell D. solutes to move out of the cell

30. ## physics

The pressure gauge on a tank registers the gauge pressure, which is the difference between the interior pressure and exterior pressure. When the tank is full of oxygen (O2), it contains 10.0 kg of the gas at a gauge pressure of 43.0 atm. Determine the mass

asked by shawn on December 13, 2014
31. ## science

i really need to know what alkalis and acids are in soap!!! FOR TOMMOROW! Thank you for using the Jiskha Homework Help Forum. Here is something on soaps from a Chemistry site: http://www.cleaning101.com/cleaning/chemistry/ page 2 =

asked by hollyxx on March 8, 2007
32. ## science

Can you direct me to a site(s) which can help with college chemistry and statistics? Here are a couple of good chemistry sites that pretty well cover the waterfront. I don't know any stat sites but if you will repost with the subject line of "math" I'm

asked by jules on February 19, 2007
33. ## honors chemistry- isotopes...

can scientists actually measure the mass and relative abundance of isotopes of an element by counting each particle and measuring their masses? [ i think no because it would be too small ] if not, how could a scientist measure the mass and relative

asked by guitarking4000 on October 31, 2006
34. ## Chemistry

I have to summarize 10 articles relating to the topics we had covered in class. However, there are 3 sources out of the 10 that I don't understand. Could someone possibly go through the sources and summarize them. 1.) This article covers Nuclear Chemistry

asked by Jess on February 27, 2016
35. ## calculus

At a constant temperature, the pressure, P, and volume, V, of a trapped gas have the relationship P equals the quotient of k divided by V , where k is some positive constant. What occurs if the volume is compressed such that V → 0+? The pressure

asked by ashley on February 5, 2014
36. ## college chem

A mixture contains H2 at 600 torr pressure, N2 at 200 torr pressure and O2 at 300 pressure. what is the total pressure of the gases in the system?

asked by ashley on April 29, 2014
37. ## science

1. What will happen to the pressure in your tires if the temperature drops 40 degrees over the night? a) Pressure will increase b) Pressure will decrease c) Pressure will not change d) Cannot determine 2. Explain, on a molecular level, why this happens.

asked by josh on February 15, 2008
38. ## Further maths

In an examination 31 candidate passed Chemistry,29 passed Physics 3 failed both subjects.lf 50 candidates sat for the examination how many of them passed Chemistry only.

asked by Kelvin on September 24, 2017
39. ## data management gr.12

Tests show that the pressure, in pounds per square inch (Psi) required to break skate boards is normally distributed with a mean of 54.7 and standard deviation of 6.2 a)what is the probability that a board will require at least a pressure of 70 to break?

asked by Jenna on December 20, 2016
40. ## Chemistry

If N2 is added to a balloon that contains O2 (partial pressure 450 mm Hg) and CO2 (partial pressure 150 mm Hg) to give a total pressure of 850 mm Hg, what is the partial pressure of each gas in the final mixture?

asked by Ryan on April 11, 2013
41. ## Chemistry

If N2 is added to a balloon that contains O2 (partial pressure 450 mm Hg) and CO2 (partial pressure 150 mm Hg) to give a total pressure of 850 mm Hg, what is the partial pressure of each gas in the final mixture?

asked by Ryan on April 12, 2013
42. ## Chemistry

A basketball is inflated in a garage at 25 degrees Celsius to a gauge pressure of 8.0 psi. Gauge pressure is the pressure above atmospheric pressure, which is 14.7 psi. The ball is used on the driveway at a temperature of -7 degrees celsius and feels flat.

asked by Alexandria on December 28, 2006
43. ## vapor pressure

The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 45.0C , the total pressure is 980 mm Hg. The vapor pressure of ethanol

asked by yayhawknelson on January 22, 2007
44. ## Chemistry

In an experiment, 238 mL of 0.45 molar hydrochloric acid completely reacts with excess iron to produce hydrogen gas and iron (III) chloride. What volume will the hydrogen gas occupy if it is collected over water at 35 degrees Celsius and 735 torr? The

asked by Tichele on January 20, 2011
45. ## Chemistry

A 225 g sample of xenon is placed in a 15.6 L stainless steel vessel at 27.0°C. a. What is the pressure in the vessel? b. If the temperature is raised to 200°C, what is the pressure in the vessel? c. The air pressure outside the vessel is 1.00 atm. If

asked by Shell on May 19, 2011
46. ## chem

at a depth of 100m underwater the water pressure is equal to 10 atm of pressure. what is the partial pressure of N2 at a pressure of 10 atm?

asked by jojo on August 25, 2014
47. ## Chemistry(Please check)

1) The Ka for acetic acid is 1.8e-5. What is the pH of a 3.18M solution of this acid? I did 1.8e-5 = x^2/3.18 x=sqrt 1.8e-5 X 3.18 = 7.56e-3 pH=-log(7.56e-3) = 2.12 The pH is 2.12 2) At 25 degrees celsius, the pH of a 1.75M NaCN solution (the Ka for HCN is

asked by Hannah on April 2, 2012
48. ## Chemistry

Chemistry - MathMate, Tuesday, March 31, 2015 at 2:56pm 1m = 1000 mm (millimeter) 1 mm = 1000 μm (micrometer) 1 μ = 1000 nm (nanometer) If the tube is 1 nm in diameter, then veryify that 5 μm = 5*1000 nm = 5000 nm = how many diameters? Chemistry -

asked by CJ on March 31, 2015
49. ## Chemistry

Please let me know how I am doing with the following three chemistry questions. 1.A sample of a gas in thermometer has a volume of 135mL at 11 degree celcius.Indicat what temperature(in k and degree celcius)would correspond to the foll.volume:

asked by Cliff on November 23, 2010
50. ## chemistry

Describe the differance between chemistry and chemical technology. Technology is the making of applications. Chemical technology...making chemicals for practical or commercial purposes. Chemistry...the study of materials, their reactions

asked by Jane on August 16, 2005
51. ## chemistry

The problem: Nitrogen can react with steam to form ammonia and nitrogen monoxide gas. A 20.0L sample of nitrogen at 173C and 772mmHg is made to react with an excess of steam. The products are collected at room temperature (25C) into an evacuated flask with

asked by Gweedo on June 17, 2009
52. ## Math

At small town high there are 100 students,each of whom takes atleast one of Biology,Chemistry,or physics.There are 50 student in Biology,60 in chemistry,and 70 in Physics.If 24 students are enrolled in exactly two of the classes,how many students are in

asked by Luiz on May 19, 2016
53. ## Chemistry

A chemistry laboratory of an experience is being conducted. The pressure is 0.9 atm and the temperature is 18°C. One of the steps of the experience requires the combustion of 500 mL ethanol (Density=0.78 g/mL). Whereas the burning of this amount of

asked by Marley on January 19, 2016
54. ## chemistry

chemistry posted by Naomi today at 8:03pm. The material Magnesium Sulfate What mass of dry material would be needed to make an aqueous solution with a molality of 4 moles/kg solution ? What mass of water is needed? 4 (24.305+ 32.065+ (4 x 15.999)) =481.5

asked by Confused!(Naomi) on January 18, 2018
55. ## chemistry

At 16°C a sample of ammonia gas exerts a pressure of 11.7 atm. What is the pressure when the volume of the gas is reduced to one-fourth of the original value at the same temperature so the inital Temp=16 C initial Pressure. 11.7 final pressure-unknown

asked by april on October 18, 2010
56. ## Chemistry

Heyy, okay I have this question about chemistry and its driving me nuts. It feels like I am so close but am just missing something. The question is: A vessel of 6.84 L in volume contains 3.61 L of pure water at 25°C. A partial pressure of 3.67 atm of CO2

asked by Tracy on February 4, 2007
57. ## vapor pressure

The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 450C, the total pressure is 980 mm Hg. The vapor pressure of ethanol at

asked by yayhawknelson on January 18, 2007
58. ## General Chemistry Project Ideas?

Hi I'm a high school science teacher and I teach General Chemistry when we learn how chemistry relates to our everyday lives. Right now were learning about some common compounds. I need projects ideas regarding some common compounds relating to their

asked by Teacher on January 8, 2015
59. ## bio101

2. Find a media piece—article, video, presentation, song, or other—that recognizes the fundamental concepts of chemistry in biology. Include the link or reference citation for the piece and describe how it helped you better understand how fundamental

asked by kelly on January 27, 2012
60. ## chemistry

1. Unless otherwise instructed, you may use the periodic table in the Chemistry: Problems and Solutions book for this test. You also may use the formulas on pages 238 243. A student increases the temperature of a 556 cm3 balloon from 278 K to 308 K.

asked by tony on June 15, 2015
61. ## Science

Air, like other gases, flows from a region with ________. A. Lower pressure to a region with higher pressure B. No pressure to a region with high pressure C. Little pressure to a region with high pressure D. Higher pressure to a region with lower pressure

asked by Diana on February 12, 2015
62. ## PHYSICS!

In scuba diving, a regulator is used so that the pressure of the air the diver breathes is close to that of the ambient water. A reckless swimmer decides to use a hose sticking out of the surface to breathe underwater while diving in a lake. When the air

asked by Emily on October 27, 2012
63. ## chemistry help

this isnt exactly a chemistry question, but i am doing chemistry homework with my calculator. and i want to know if someone can tell me how can i cube something with this calculator? TI-30X IIS? i wanted to post a pic but i cant post sites. i have this

asked by jessie on November 28, 2010
64. ## chemistry

How would one calculate the equilibrium pressure of Sodium bicarbonate and citric acid in water (think Alka Seltzer), reacting in a closed volume. The pressure builds up to a point, where the reaction slows due to pressure build up. How do I calculate the

asked by Joe on April 12, 2010
65. ## chemistry

How many moles of gas must be forced into a 5.0 L tire to give it a gauge pressure of 33.6 psi at 28 ∘C? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.8 psi so that the total pressure in the tire is 48.4

asked by Tammy on April 9, 2016
66. ## science grade 7

Because pressure sensors are found deep in the dermis, they are not able to feel the difference between a little pressure and a lot of pressure. False?

asked by rawr... im a dinosaur.... rawr on November 8, 2012
67. ## Physics

Suppose the cross sectional of the tube is 0.05 cm2, what would be the volume (a) during the lowest pressure in the experiment? (b) during the highest pressure? (c) at the atmospheric pressure?

asked by Sydney on April 23, 2015
68. ## Chemistry

the total pressure in the vessel is 199kPa. How much pressure does nitrogen exert on helium if it had a pressure of 94 kPa?

asked by Guy on October 19, 2010
69. ## science

1. Name a Protist that has both plant and animal characteristics. 2. What compound is usually identified by the use of iodine? 3. What important gas is released during photosynthesis? 4. Contrast photosynthesis and respiration. 5. Is movement

asked by Jasmine on November 10, 2008
70. ## Chemistry (DrBob222)

Hi Dr. Bob would you please tell me what D rpresents? Thank you! What is the reactant, products, and what compounds is it? Is it H2O, O2, or what? What are the transition molecules? Help please. Do as below to get to the image. I couldn't put the URL in

asked by Anonymous on June 17, 2012
71. ## math

â€¢You and three (3) of your friends were in the same advance placement high school chemistry class in high school. All four (4) of you decided to take the same chemistry class together at the local university along with 21 other students. On the first

asked by jacque on December 5, 2012
72. ## fluid

3. A students boot pressure on the ground is 5 pounds per inch squared. how many inches squared will be required to set off a landmine with a set pressure 40 pounds? 4. Calculate the pressure exerted by the atmosphere on a cubic square can with 6 sides of

asked by brian baldwin on October 10, 2011
73. ## ma

In a class of 100 students, 40 failed in Math, 30 failed in Physics, 60 failed in Chemistry. 35 passed in both Math and Physics. 20 passed in Physics and Chemistry. 25 passed in Math and Chemistry. Each student passed in at least one subject. How many

asked by Anonymous on September 7, 2016
74. ## Physics

The liquid in the open tube manometer is mercury, y1=3cm and y2 = 7cm. Atmospheric pressure is 980mbrs. (A) what is the absolute pressure at the bottom of the U-shape tube? (B) what is the absolute pressure in the open tube at a depth of 4 cm below the

asked by Rizal on February 2, 2017
75. ## chemistry

A sample of hydrogen at 50◦C exerts a pressure of 0.377 atm. The gas is heated to 61◦C at constant volume. What will its new pressure be? how do i find the pressure? i don't understand!!!!!!!!!!!

asked by whitney on March 9, 2014
76. ## math

The pressure P, of a gas varies inversely with its volume, V. Pressure is measured in units of Pa. Suppose that a particular amount of a gas is initially at a pressure of 84 Pa at a volume of 36 L. If the volume is expanded to 216 L, what will the new

asked by anon on May 18, 2016
77. ## math

Riena has six unmarked CDs in a box, where each is dedicated to exactly one of English, mathematics, French, American history, chemistry, and computer science. Answer the following questions: a. If she chooses a CD at random, what is the probability she

asked by kirk on August 12, 2010
78. ## Chemistry

A 150.0 mL flask contains 740. g of N2 at 0°C. What is the pressure in atm. What is the pressure in torr? What is the pressure in psi?

asked by Lexus on February 26, 2014
79. ## chem

the pressure 15 meters under water is 248 kPa what is the pressure in atm what is the pressure in mmHg

asked by christie on November 13, 2012
80. ## chemistry

The pressure in car tires is often measured in pounds per square inch (), with the recommended pressure being in the range of 25 to 45 . Suppose a tire has a pressure of 37.0 . Convert 37.0 to its equivalent in atmospheres.

asked by David on November 21, 2012
81. ## chemistry

The pressure in car tires is often measured in pounds per square inch (), with the recommended pressure being in the range of 25 to 45 . Suppose a tire has a pressure of 33.5 . Convert 33.5 to its equivalent in atmospheres.

asked by David on November 21, 2012
82. ## set

of 250 candidates writing a exam, 147 passed in math,150 pass in chemistry and 85 pass subjects B)calculate the number of students who pass i)pass math only ii)pass chemistry only iii)passed neither iv)pass only one subject

asked by Andrew on January 31, 2012
83. ## Math

of 250 candidates writing a exam, 147 passed in math,150 pass in chemistry and 85 pass subjects B)calculate the number of students who pass i)pass math only ii)pass chemistry only iii)passed neither iv)pass only one subject

asked by andrew on January 31, 2012
84. ## Math

The pressure P of a gas varies inversely with its volume, V. Pressure is measured in units of Pa. Suppose that A particular amount of a gas is initially at a pressure of 104 Pa at a volume of 108 L. If the volume is expanded to 432 L , what will the new

asked by Bella on May 26, 2016
85. ## Statistics

In how many different ways can a chemistry book, a calculus book, a history book and a dictionary be arranged on a shelf so that the chemistry book or the history book appears first?

asked by john on May 4, 2017
86. ## Chem

An aqueous solution containing 21.6 mg of Vasopressin in 100 mL solution produces Osmotic Pressure of 3.70 mmHg at 25°C. Calculate the Molecular Mass of Vasopressin. Here's what I started working on, but then I got stuck. 21.6 mg = 0.0216 g v = 100 mL =

asked by Anonymous on February 3, 2012
87. ## science

From the following: pure water solution of C12H22O11 (m=0.01) in water solution of NaCl (m=0.01) in water solution of CaCl2 (m=0.01) in water choose the one with the a) highest freezing point b) lowest freezing point c) highest boiling point d) lowest

asked by Sal on October 5, 2010
88. ## AP Chemistry

From the following: pure water solution of C12H22O11 (m=0.01) in water solution of NaCl (m=0.01) in water solution of CaCl2 (m=0.01) in water choose the one with the a) highest freezing point b) lowest freezing point c) highest boiling point d) lowest

asked by Anonymous on November 24, 2010
89. ## biology

What must the systolic blood pressure be valued at for adequate mean arterial pressure if the diastolic pressure is 75? (Assume resting conditions) A. at least 90 B. at least 95 C. at least 100 D. at least 105 E. at least 110 F. at least 115 G. at least

asked by Jim on April 11, 2012
90. ## science

Helium has the lowest boiling point of the elements. The slightest change in temp can cause it to vaporize and expand. To prevent pressure explosions, a line from the tank has a "burst disk" in case a of sudden pressure increse. then the diaphragm would

asked by anonymous on January 2, 2011
91. ## pre-calc

Hello, I'm trying to figure out how to do this problem, but don't know where to begin. I think some information is missing. Blood Pressure: The function P=120+30Sin 2pi(t) models the blood pressure (in millimeters of mercury) for a person who has a high

asked by Phillip on March 7, 2010
92. ## Precalc Repost

Hello, I'm trying to figure out how to do this problem, but don't know where to begin. I think some information is missing. Blood Pressure: The function P=120+30Sin 2pi(t) models the blood pressure (in millimeters of mercury) for a person who has a high

asked by Phillip on March 8, 2010
93. ## 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

asked by kenxie on December 1, 2015
94. ## Math

At Small Town High there are 100 students, each of whom takes at least one of biology, chemistry, or physics. There are 50 students in biology, 60 in chemistry, and 70 in physics. If 24 students are enrolled in exactly two of these classes, how many

asked by kyle on November 7, 2010
95. ## chemistry

given 2C6H6+15O2->12CO2+6H2O 1. Starting with a confined volume of 4.80L and O2 with a partial pressure of 223.1 torr at 25 degrees C. C6H6 is in excess. The reaction is allowed to proceed to completion. The container is returned to 25C. Both liquid water

asked by stacy on November 13, 2012
96. ## chemistry

given 2C6H6+15O2->12CO2+6H2O 1. Starting with a confined volume of 4.80L and O2 with a partial pressure of 223.1 torr at 25 degrees C. C6H6 is in excess. The reaction is allowed to proceed to completion. The container is returned to 25C. Both liquid water

asked by stacy on November 13, 2012
97. ## physics

Why is blood pressure called excess pressure? Use the term true pressure. Thank you for your help!

asked by Alicia on February 25, 2015
98. ## Math

A particular Chemistry book costs \$6 less than a particular Physics book. Two such Chemistry books and three such Physics books cost a total of \$123. Construct two simultaneous equations and solve them using the substitution method. Show your working. I

asked by anonymous on February 23, 2018
99. ## Physics

2. On the inside of an airplane the air pressure is about 85% of the atmospheric pressure at sea-level while outside, when it is cruising, the pressure is about 25% of the sealevel atmospheric pressure. If a window is 0.46 m in diameter, what is the net

asked by Newton on February 11, 2011
100. ## science

As you airplane taker off from an airstrip on the ground and rises 30,000 feet into the sky what happens to the air pressure on the outside of the airplane ? Answers are Air pressure decreases Air pressure increases Air pressure stays same more information

asked by snow on March 26, 2014