# osmotic pressure chemistry

10,993 results, page 43
1. ## chemistry

A solution is made by adding 0.100 mole of ethyl ether to 0.841 mole of ethyl alcohol. If the vapor pressure of ethyl ether and ethyl alcohol at 20oC are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20oC (assuming ideal

asked by renee on February 22, 2012
2. ## Physics hard... can't get it right

A cylinder of compressed Oxygen is carried on a spacecraft headed for Mars. The compressed gas cylinder has a volume of 10,000 L and is filled to a pressure of 200 atm at 273 K. The maximum pressure the cylinder can hold is 1000 atm. The molar mass of

asked by richard on May 7, 2010
3. ## chemistry

give the formular of the highest hydride and highest flouride of ununhexium and explain how you arrived at your answer You can find Uuh in the periodic table. Placement of Uuh in the periodic table will tell you that the chemistry will be similar to the

asked by montana on February 2, 2007
4. ## Re: chemistry

The average pH of open ocean water is 8.1. What is the maximum value of [Fe3+] in pH 8.1 seawater if the Ksp of Fe(OH)3 is 1.1*10^-36? chemistry - DrBob222, Friday, December 7, 2012 at 10:14pm Fe(OH)3 ==> Fe^3+ + 3OH^- pH = 8.1 pH + pOH = pKw = 14

asked by Brunette on December 9, 2012
5. ## chemistry

solve Ka for HX => H^+ + X^- given 0.1M LiX at pH=8.9 Chemistry - DrBob222, Tuesday, March 30, 2010 at 6:32pm LiX(aq) ==> Li^+(aq) + X^-(aq) X^- is a base and hydrolyzes in water to X^- + HOH ==> HX + OH^- Make an ICE chart and substitute into the

asked by Larry on March 30, 2010
6. ## chemistry homework help!!

Dry ice (solid CO2) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole, a fuse added and the hole plugged. When lit the exploding gunpowder rapidly vaporizes the dry ice

asked by danielle on February 17, 2012
7. ## Chemistry (Check)

A 30.0 L sample of nitrogen inside a rigid, metal container at 20.0 degrees C is placed inside an oven whose temperature is 50.0 degrees D. The pressure inside the container at 20.0 degrees C was at 3.00 atm. What is the pressure of the nitrogen after its

asked by Anonymous on November 13, 2015
8. ## University Chemistry (first year)

I'm working on a first year chemistry lab where we synthesized alum from alunimini foil and I'm doing the report and one of the questions is as follows: Based on your findings, what volume of water can be cleared of suspended solids by one beverage can

asked by clam on October 17, 2011
9. ## chemistry

I have been having a problem with solving a chemistry problem. The problem requires finding the density in copper at 1305K (the temperature changes when you reset the problem). I think I am using the proper formula, (N_v/N_s=Ae^-changeH_v/kT). My results

asked by Al on November 17, 2013
10. ## chemistry

I have been having a problem with solving a chemistry problem. The problem requires finding the density in copper at 1305K (the temperature changes when you reset the problem). I think I am using the proper formula, (N_v/N_s=Ae^-changeH_v/kT). My results

asked by Al on November 17, 2013
11. ## chemistry

when magnesium chlorate under goes decompostion, oxgen gas is realsed in the following reaction: 2KClO3→ 2KCl + 3O2 repeat 2KClO3→ 2KCl + 3O2 when 3.50 grams of potassuim chlorate is decomposed at STP, how many litters of oxgen will be produced?

asked by katie on March 1, 2014
12. ## Physics

Standard Temperature and Pressure (STP) is defined as a temperature of 0.00oC and a pressure of 100kPa. If the molar mass M of nitrogen is 14.0 g/mol, find the density (kg/m3) of nitrogen gas (N2) at STP. Nitrous Oxide or laughing gas is composed of the

asked by Francis on April 24, 2017
13. ## Chemistry

An unsealed 750 mL beaker contains 500 mL of very dense gas at 25.0 degrees C and 1.10 atm. The gas is much denser than the surrounding air, so it does not disperse into the air. (a) At constant pressure, what would the temperature have to reach for the

asked by Alexis on March 6, 2017
14. ## Physics

1. What is the kinetic energy of a 0.50 g insect traveling in a straight line at 5.0m/s? a. 6.25j b. 1.25j c. 5.0j d. 250j Is the answer A?? 2. Mechanical energy is defined as the sum of which of the following? a. kinetic, potential and radiant energy b.

asked by N. on March 15, 2015
15. ## Chemistry

Why is it that copper (II) sulfate with barium hydroxide --> copper hydroxide (solid) + barium sulfate (solid)? According to the solubility rules given to me by my professor, both are insoluble, and therefore should be labeled as solids. Is there something

asked by Tom on September 8, 2016
16. ## Chemistry

Why is it that copper (II) sulfate with barium hydroxide --> copper hydroxide (solid) + barium sulfate (solid)? According to the solubility rules given to me by my professor, both are insoluble, and therefore should be labeled as solids. Is there something

asked by Tom on September 8, 2016
17. ## 8th Grade Chemistry

This is from the Glencoe book Chemistry, Book L. Unlike sodium and chlorine, some atoms becomre more stable by sharing_______, forming______________rather than charged__________. The bonds in a molecule of oxygen are _______ _______ bonds, while the bonds

asked by Eric on November 15, 2011
18. ## Biology

I don't know any info an the first semester and midterms are tomorrow please help ( Populations, Communities, and Ecosystems Chemistry of Living Things History of Life on Earth: The First Simple Cells History of Life on Earth: Complex Cells Cells and Their

asked by Noemie on January 20, 2011
19. ## Mole fractions in a liquid mixture:

Acetone, C3H6O, and ethyl acetate, C4H8O2, are organic liquids often used as solvents. At 30 degrees C, the vapor pressure of acetone is 285 mm Hg and the vapor pressure of ethyl acetate is 118mm Hg. the solution is prepared at 30 degrees C by dissolving

asked by Sar on September 2, 2010
20. ## Chemistry

What is the mole fraction of methyl n-butyrate CH3(Ch2)2COOCH3 in the vapor phase of a solution consisting of? a mixture of methyl n-butyrate and ethyl acetate CH3COOCH2CH3 at 50 Celsius if the total pressure above the solution is 192.5 torr. The vapor

asked by Jude on February 20, 2011
21. ## Physics

A sealed container of volume V =0 .10m^3 holds a sample of N =3 .0×10^24 atoms of helium gas in equilibrium. The distribution of speeds of the helium atoms shows a peak at 1.1×10^3 ms^−1. (i) Calculate the temperature and pressure of the helium gas.

asked by Anon on March 20, 2018
22. ## Chem

(a) Use Boyle's law to calculate the volume the gas will occupy if the pressure is increased to 1.79 atm while the temperature is held constant. 3.17 L (b) Use Charles's law to calculate the volume the gas will occupy if the temperature is increased to

asked by Sarah Pick on May 9, 2014
23. ## Chemistry

Calculate the entropy change accompanying conversion of 1 mole of ice at 273 K and 1 atm pressure into steam at 373 K and 1 atm pressure, given that at 273 K, the molar heat of fusion of ice is 6 kJ/mol and at 373 K, the molar heat of vapourization of

asked by Mahesh on February 26, 2016
24. ## chem

The experiment described in the procedure was performed using a sample of Calcium with HCl(aq). The lab conditions were 25.00°C, and 747.0 torr barometric pressure. 112.7 mg of Calcium (MM: 40.08 g/mol) was reacted with 25.00 mL of 1.25M HCl(aq). 71.560g

asked by Anonymous on November 18, 2013
25. ## Chem

A solution is made by mixing 50.0 g C3H6O and 50.0 g of CH3OH. What is the vapor pressure of this solution at 25 degrees C? What is the composition of the vapor expressed as a mole fraction? Assume ideal solution and gas behavior. (At 25 degrees C the

asked by Christopher on March 24, 2007
26. ## chemistry(oxidation)

ok,I really don't understand the whole oxidation numbers thing my question is state the oxidation number for nitrogen in the following NH3= -3 NO2-1= -1 N2= 0 NO2Cl= 5 N2H4 -2 am I correct? NH3= -3 NO2-1= -1 No, oxygen is -2, so N is +3 N2= 0 NO2Cl= 5 N2H4

asked by mike on May 17, 2007
27. ## chemistry

when x gram of carbon is completely burnt in certain amount of oxygen y gram of carbondioxide is form.what mass of Co2 will be produced when 2x gram of carbon is burnt in z gram of oxygen. which law of chemistry will help me to find the answer

asked by Neha on November 6, 2014
28. ## Physics

In a container of negligible mass, 0.100 kg of steam at 110°C and atmospheric pressure is added to 1.00 kg of water at 20.0°C. (a) If no heat is lost to the surroundings, what is the final temperature of the system? (b) At the final temperature, how many

asked by Margret on November 25, 2015
29. ## physics

a hot air balloon is hovering at an altitude of 6000 meters. The pilot decides that it is time to descend and turns off the balloon's burners.Once the balloon reaches the ground, the gas inside the balloon occupies 980 m cubed and is at atmospheric

asked by angela on February 19, 2012
30. ## ununhexium

What is the highest fluride of Uuh? Here is a web site for the periodic table. Look up element number 116. The chemistry of Uuh should be similar to those of S, Se, Te, Po etc. http://www.webelements.com/ I get it as Uuh2F6 but i'm not sure if the valency

asked by RedQueen on February 4, 2007
31. ## chemistry

A chemistry student weighs out 0.172 grams of acrylic acid (HCH2CHCO2) into a volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1800 moles/liter NaOH solution. Calculate the volume of NaOH solution the

asked by Lucas on January 25, 2012
32. ## college chemistry

A solution is made by adding 0.100 mole of ethyl ether to 0.841 mole of ethyl alcohol. If the vapor pressure of ethyl ether and ethyl alcohol at 20oC are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20oC (assuming ideal

asked by renee on February 27, 2012
33. ## Chemistry

i need help. Calculate the pH of a 0.24 M CoCl3 solution. The Ka value for Co(H2O)63+ is 1.0 10-5. how do u do these with like the Cl there? Responses Chemistry - DrBob222, Monday, February 16, 2009 at 12:35am Just ignore the Cl^-. Co(H2O)6Cl3 ==>

asked by Lindsey on February 16, 2009
34. ## Chemistry

Would a substance that does not form hydrogen bonds have a high or low surface tension? What about vapor pressure, specific heat,heat of vaporization or boiling point? It requires extra energy to break hydrogen bonds so a substance that does not form H

asked by Dave on March 7, 2007
35. ## Organic Chemistry

Why does CH3Br react faster with hydroxyl ions (OH^-) than CH3Cl? In the halogen series, Br has a weaker bond with the CH3 than Cl. Smaller halogen atoms have a larger electron affinity to fill the outer shell. The greater tendncey of CH3Br to break up

asked by Vic on August 5, 2007
36. ## Chemistry

From the Standard Potential Table in your general chemistry textbook: Half-reactions are written as _________ reactions with charge and mass balanced. Among the ions, Cd2+Pb2+ & Ca2+ ,__________ has the greatest ability to reduce to its neutral metal. (Use

asked by Lily on April 21, 2008
37. ## Minoxidil

So, I'm doing a research project for my chemistry class, and one of the parts that I have to answer is the chemical reaction of the substance that I'm researching. But there's a problem. I've searched every single website regarding minoxidil, but I cannot

asked by Jude on May 28, 2012

Measurements of oxygen binding by whole human blood, at 37oC, at pH 7.4, and in the presence of 40mm of CO2 and normal physiological levels of BPG (5 mmol/L of cells), give the following: PO2 (mm Hg) = 10.6, 19.5, 27.4, 37.5, 50.4, 77.3, 92.3 % saturation

asked by Gulzaman on September 28, 2007
39. ## chemistry

When the conductivity is at a minimum, what must be true about the amount of Ba(OH)2 compared to H2SO4? The Ba(OH)2 dissociates as Ba+2 + 2 OH-. H2SO4 dissociates as 2 H+ + SO4-2. Why does it not conduct at this low point? Why does it conduct more before

asked by Sara on July 25, 2012
40. ## chemistry

Hydrogen gas (a potential future fuel) can be formed by the reaction of methane with water according to the following equation: CH4(g)+H2O(g) = CO(g) + 3H2(g) In a particular reaction, 26.5 L of methane gas (measured at a pressure of 736 torr and a

asked by Lili on October 13, 2008

1. The vapor pressure of dichloromethane, CH2Cl2, at 0C is 134mmHg. The normal boiling point of dichloromethane is 40C. Calculate its molar heat of vaporization The answer is in kilojoules per mole. I know i use the Clausius-Clapeyron equation but i don't

asked by Saira on January 18, 2009
42. ## science

as the speed of a fluid increases the pressure decreases. as the speed of the fluid decreases, the pressure increases. what is this called?

asked by troy on April 7, 2008
43. ## PHYSICS (CHECK WORK)

Can somebody please check my work. I got part a right, but my answer for part b is wrong. (a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 25.6 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is

asked by Amy on November 8, 2012
44. ## Chemistry

a change in pressure would have the greatest effect on the solubility of a A. solid in a liquid B. gas in a liquid C.liquid in a liquid D.liquid in a solid in an aqueous solution of potassium chloride, the solute is A. Cl B. KCl C. H20 D. K B for the

asked by Kat on March 27, 2007
45. ## CHEMISTRY

When air pollution is high, ozone (O3) contents can reach 0.60 ppm (ie., .60 mol ozone per million mol air). How many molecules of ozone are present per liter of polluted air if the barometric pressure is 755 mm Hg and the temperature is 79 degrees F? I

asked by Dave on January 4, 2007
46. ## Math

In a group of 500 students, 150 are studying physics, 220 are studying biology, and 100 are studying chemistry. At least 25 students are studying more than one of these sciences. What is the greatest possible number of these students that might NOT be

asked by Anonymous on July 21, 2016
47. ## Chemistry

I need help with this chemistry flame test lab discussion question. "List the metals used in this lab in increasing order of the energy of the light emitted." We tested BaCl2, CaCl2, CuCl2, FE(NO3)3, KCl, LiCl, NaCl, & Sr(No3)2. I'm not completely sure how

asked by Elva on November 3, 2013
48. ## Chemistry

I need help with this chemistry flame test lab discussion question. "List the metals used in this lab in increasing order of the energy of the light emitted." We tested BaCl2, CaCl2, CuCl2, FE(NO3)3, KCl, LiCl, NaCl, & Sr(No3)2. I'm not completely sure how

asked by Elva on November 3, 2013
49. ## Chemistry

I need help with this chemistry flame test lab discussion question. "List the metals used in this lab in increasing order of the energy of the light emitted." We tested BaCl2, CaCl2, CuCl2, FE(NO3)3, KCl, LiCl, NaCl, & Sr(No3)2. I'm not completely sure how

asked by Elva on November 3, 2013
50. ## Chemistry

How is the chemistry of water important to chemical reactions that support life? What does cohesion and polarity have to do with the chemical reactions and chemicals necessary for life? Does the cohesion have to do with it sticking together into molecules,

asked by chemistrycat on May 4, 2018
51. ## Science

I need help with this chemistry flame test lab discussion question. "List the metals used in this lab in increasing order of the energy of the light emitted." We tested BaCl2, CaCl2, CuCl2, FE(NO3)3, KCl, LiCl, NaCl, & Sr(No3)2. I'm not completely sure how

asked by Elva on November 3, 2013
52. ## Chemistry

When burning a Magnesium Ribbon, would the color (the white dust) that it changed to be a chemical change? Or how about the spark it makes (I am just in basic chemistry, so that spark might be counted as a chemical change)? So far I got from the help for

asked by Chopsticks on January 30, 2009
53. ## Physics

A fish at a pressure of 1.1 atm has its swim bladder inflated to an initial volume of 8.16 mL. If the fish starts swimming horizontally, its temperature increases from 20.0 degrees Celsius to 22.0 degress Celcius as a result of exertion. A)Since the fish

asked by Devon on May 4, 2011
54. ## Physics

A cylinder of gas is compressed by a piston from an initial volume of 125 liters to a final volume of 90 liters. The compression occurs at constant pressure, and the work done on the gas by the piston is 104 joules. What is the gas pressure during the

asked by Johnny Black on December 4, 2015
55. ## Physics

A hydraulic ram is a device that uses the pressure created by a large amount of water falling a small distance to raise a portion of that water to a much greater height. It is suitable in valleys where springs feed a stream below, where farms needing

asked by Ravin on January 31, 2013
56. ## chemistry

solve Ka for HX => H^+ + X^- given 0.1M LiX at pH=8.9 Chemistry - DrBob222, Tuesday, March 30, 2010 at 6:32pm LiX(aq) ==> Li^+(aq) + X^-(aq) Question for DrBob222 - is the X^- value in the ICE calculations 0.1 from the initial LiX 0.1M? X^- is a base and

asked by Larry on March 30, 2010
57. ## Chemistry

Calculate how many grams of sodium azide (NaN3) are needed to inflate a 25.0 × 25.0 × 20.0 cm bag to a pressure of 1.25 atm at a temperature of 20.0°C. How much sodium azide is needed if the air bag must produce the same pressure at 10.0°C? 20.0°C:

asked by Onye on March 5, 2018
58. ## Chemistry

A chemistry student weighs out 0.123 grams of chloroacetic acid into a 250. milliliter volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.2100 moles/liter NaOH solution. Calculate the volume of NaOH solution

asked by Deborah on January 19, 2012
59. ## Bio (why no one is helpting?)

Measurements of oxygen binding by whole human blood, at 37oC, at pH 7.4, and in the presence of 40mm of CO2 and normal physiological levels of BPG (5 mmol/L of cells), give the following: PO2 (mm Hg) = 10.6, 19.5, 27.4, 37.5, 50.4, 77.3, 92.3 % saturation

asked by Gulzaman on September 29, 2007
60. ## physics

Through a pipe of diameter 16cm, water is pumped from the Colorado River up to Grand Canyon Village, on the rim of the canyon. The river is at 564m elevation and the village is at 2096m elevation. a) At what minimum pressure must the water be pumped to

asked by sam on December 29, 2010
61. ## Physics

The Mariana trench is located in the Pacific Ocean at a depth of about 11500 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the

asked by Mary on April 9, 2007
62. ## Chemistry

Expressing amounts of energy in different energy units is necessary to solve many chemistry problems. For practice, complete the following table. FILL IN THE BLANKS PLEASE. The Joule (J) is the SI unit of energy. 1 calorie (cal) = 4.184 J J cal kJ 695 ___

asked by Anonymous on July 3, 2017
63. ## CHEMISTRY

What type of reactant typify compostion reactions? You need to clarify your question for me. I haven't heard of composition rreactions. Perhaps I know it by another name. In the real world, there is no "typical" reactant in composition reactions. In the

64. ## Chemistry

What will be the vapor pressure at 25 degree C of a 30.0% (by mass) solution of glucose, C6H12O6 (a non-electrolyte-molar mass = 180 g/mol), in water? The vapor pressure of water at 25 degree C is 23.8 mm Hg. Psolvent = XsolventPosolvent. You will need to

asked by AndrewN. on February 1, 2007
65. ## Physics

Two bicycle tires are set rolling with the same initial speed of 3.00m/s along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 psi and goes a distance of 18.1m ;

asked by collegekid on May 13, 2014
66. ## heat

20 cubic inches of a gas with an absolute pressure of 5 psi is compressed untill its pressure reaches 10 psi. what is the new volume of the gas? ( assuming that there s no change in temperture) a. 5 cubic inches b. 10 cubic inces c. 40 cubic inches d. 100

asked by heather on July 11, 2006
67. ## SCIENCE

jamal's neighbor tells him that there are more bacterial cells than human cells in his body. which of these is the best reason that jamal should question his neighbors statement? a. jamal is older than his neighbor b. jamal does not like his neighbor very

asked by John Doswell on February 28, 2016
68. ## Science Help

jamal's neighbor tells him that there are more bacterial cells than human cells in his body. which of these is the best reason that jamal should question his neighbors statement? a. jamal is older than his neighbor b. jamal does not like his neighbor very

asked by John Doswell on February 28, 2016
69. ## Chemistry

If you can show me an example of one problem, I have no idea how to approach this. Calculate where the number 40.67 came from. Use the Clapeyron-Clausisus equation. Assuming that delta H vap does not change with temperature, this equation relates the

asked by Angel on February 26, 2012
70. ## Chemistry

A gas storage tank has a volume of 3.5*10^5 m^3 when the temperature is 27 degrees celcius and the pressure is 101 kPa. What is the new volume of the tank if the temperature drops to -10 degrees celcius and the pressure drops to 95 kPa?

asked by Alexandra on February 24, 2010
71. ## CHEMISTRY

At 63.5 degreesC, the vapour pressure of H2O is 23.3kPa and that of ethanol is 53.3kPa. A solution is made by mixing egual masses of H2O and C2H5OH. a. what is the mole fraction of ethanol in the solution? b. assuming ideal-solution behaviour, what is the

asked by lulu78 on October 15, 2010
72. ## General Chemistry

I have been going at part B of this problem for a few hours. I've completed an ice table and calculated the total number of moles based off pressure but am still unable to come up with the partial pressures. If someone could provide the steps for solving I

asked by Duke on January 28, 2016
73. ## Chemistry

Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a

asked by Alex on May 31, 2008
74. ## Organic Chemistry

I realize this is a general chemistry stoichiometry question, however I can not fully grasp it. I am supposed to calculate the theoretical amount (volume) of 3M sodium hydroxide (NaOH) needed to convert 1.5g of benzoic acid to its salt. I got 0.012 moles

asked by Me on January 21, 2011
75. ## Chemistry

A balloon filled with 1.35 atm of dimethyl ether gas and 5.25 atm of oxygen gas at 27 °C has an initial volume 2.00L They react according to the following reaction: C2H6O (g) + 3 O2 (g) -> 2 CO2 (g) + 3 H2O (g) The system is allowed to back cool down to

asked by T on February 19, 2015
76. ## Chemistry

A sample of gas is in a 50.0mL container at a pressure of 86 kPa and a temperature of 25°C. The entire sample is heated to a temperature of 35°C and transferred to a new container whose volume is 65.0mL. The pressure of the gas in the second container

asked by Bai on May 5, 2011
77. ## Science - Chemistry

If vapour pressure of water is 17.5 torr at 20C, what is the water vapour pressure inside a bottle of 100 proof whiskey? 100 proof = 50% ethanol Total volume = 1 L Mass of ethanol = 394.5g Mass of water = 500g Density of ethanol = 0.789g/mL Moles of

asked by Sara on December 31, 2015
78. ## Chemistry

1. Why cannot NaOH be used as primary standard for HCl? 2. Aside from carbonates, what other compounds can be analyzed using the double indicator method? What are the requirements for a sample to be analyzed using the double indicator method? 3. what is a

asked by Chin on July 6, 2007
79. ## Chemistry

Before a trip from New York to Boston, the pressure in the automobile tire is 2.1 atm at 280 K. At the end of the trip, the pressure gauge reads 1.88 atm. What is the new Celsius temperature of the air inside the tire?(Assume tires with constant volume).

asked by Linda on March 9, 2014
80. ## Chem

2. Suppose a chemistry student made 2000. mL of 6.00 M HCl. He accidently spilled half of this solution on the floor. What is the Molarity of HCL left in the beaker? Explain the answer... - for this problem, would I use the eq'N, M1V1=M2V2. 3. What is the

asked by Lina on February 1, 2017
81. ## Chemistry

Ytterbium, atomic number 70, is the first element in the Periodic table to have the first four shells full. a) State the number of electrons in the fourth shell/ level of ytterbium (1) b)How many orbitals are there in the third shell of ytterbium? (1)

asked by 0oooooooo0 on October 4, 2017
82. ## chemistry

At a given temperature, you have a mixture of benzene (vapor pressure of pure benzene = 745 torr) and toluene (vapor pressure of pure toluene = 290 torr). The mole fraction of benzene in the vapor above the solution is 0.590. Assuming ideal behavior,

asked by renee on February 22, 2012
83. ## Chemistry

i need some help with my science homework it`s the chemistry GCSE core:C2 TASK SHEET i need to design a leaflet explaining how to extract gold aluminium and iron. the words i need to include are anode,bauxite,carbon,carbon dioxide

asked by Saphire on September 27, 2010
84. ## statistics

The distribution of B.A. degrees conferred by a local college is listed below, by major. Major Frequency English 2073 Mathematics 2164 Chemistry 318 Physics 856 Liberal Arts 1358 Business 1676 Engineering 868 9313 What is the probability that a randomly

asked by Bob on April 16, 2015
85. ## Chemestry @

A 27.6ml volume of chlorine gas is collected over water at 23 C and 750 torr. The mass of the gas is 78.4mg. The vapor pressure of water is 21 torr. a)what is the pressure of the chlorine gas? b) what volume does the chlorine gas occupy? c)How many moles

86. ## chemistry

Study the reaction. 2A(?) + B(g) ⇌ A2B(g) Both B and A2B are gases. When the reaction vessel is compressed, the equilibrium position does not change. What conclusion can we draw about the state of “A” from this data? A. "A" must be a gas because, if

asked by Maddie on June 9, 2018
87. ## chem

The solubility of nitrogen in water is 8.21 E-4 mol/L at 0°C when the nitrogen pressure above water is 0.790 atm. Calculate the solubility of nitrogen in water when the partial pressure of nitrogen above water is 9.55 atm at 0°C?

asked by madd on May 8, 2013
88. ## Algebra

The question A granite cube is 10 times that of another granite cube. The pressure exerted by the larger cube on its base is how many times more the pressure exerted by the smaller cube on its base?

asked by Frank on November 26, 2011
89. ## Chemistry - Correction

I just wanted to be sure if my answers make any sense. Thank you; For the reaction of ammonia: N2(g) + 3H2(g) --> 2NH3(g) suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to the following

asked by Robert on July 3, 2012
90. ## Chemistry

I just wanted to be sure if my answers make any sense. Thank you; For the reaction of ammonia: N2(g) + 3H2(g) --> 2NH3(g) suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to the following

asked by Robert on July 2, 2012
91. ## Chemistry

Methanol, CH3OH, is produced on an industrial scale from carbon monoxide and hydrogen. At the temperatures used, gaseous methanol is formed according to the following thermochemical equation: CO(g)+ 2H2(g) CH3OH(g) £H = -90Kj 1. State Le Chateliers

asked by Adam on March 2, 2007
92. ## Physics

how are the fundamental laws and principles of physics related to the complexity that we see in nature? 2) How do the laws of physics apply to other sciences such ad biology, chemistry, and earth science? Give a specific example to show the connection - is

asked by anonymous on September 13, 2015
93. ## Chemistry

chemistry student weighs out 0.123 grams of chloroacetic acid (HCH2ClCO2) into a 250. milliliter volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1200 moles/liter NaOH solution. Calculate the volume of NaOH

asked by Deborah on January 19, 2012
94. ## Chemistry

A chemistry student weighs out 0.123 grams of chloroacetic acid (HCH2ClCO2) into a 250. milliliter volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1200 moles/liter NaOH solution. Calculate the volume of

asked by Deborah on January 19, 2012
95. ## Chemistry

Hello! I was working on my Chemistry HW about metric conversion. Can you please check to see if my answers are correct? I was having a hard time converting, and I think I finally figured it out. 1 microliter= 0.000001 liters 1 mL= 1,000 microliters 100mL=

asked by Isabella on September 8, 2015
96. ## Chemistry

A chemistry student weighs out 0.123 grams of chloroacetic acid (HCH2ClCO2) into a 250. milliliter volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1200 moles/liter NaOH solution. Calculate the volume of

asked by Deborah on January 19, 2012
97. ## Chemistry

The rate law for the reaction NO + O3 > NO2 is rate= k[NO][O3]. What will the effect on the reaction rate if the partial pressure of NO is doubled? What will the effect if the partial pressure of O2 is tripled? Just for clarification: NO will be doubled

asked by Liane on August 6, 2015
98. ## Statistics

The daily water consumption for an Ohio community is normally distributed with a mean consumption of 750,000 gallons and a standard deviation of 80,000 gallons. The community water system will experience a noticeable drop in water pressure when the daily

asked by Michael on October 11, 2011
99. ## Chemistry

Given that the vapor pressure of water is 17.54 torr at 20 C, calculate the vapor-pressure lowering of aqueous solutions that are 2.40 m in (a) sucrose, C12H22O11, and (b) aluminum chloride. Assume 100% dissociation for electrolytes. Sucrose Delta P = __

asked by David on February 19, 2012
100. ## Science

The rate law for the reaction NO + O2 > NO2 is R=k[NO][O2]. what will be the effect on the reaction rate if the partial pressure of NO is doubled? What will the effect be if the partial pressure of O2 is tripled? My answer: More NO2 would be produced if NO

asked by Anonymous on July 9, 2015