1. Chem Problem

    I need help solving this question, I have no idea what I'm supposed to do. What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium

    asked by Student on March 2, 2013
  2. Chem Problem

    I need help solving this question, I have no idea what I'm supposed to do. What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium

    asked by Student on March 2, 2013
  3. Math

    1. Two angles whose sides are opposite rays are called _____ angles. Two coplanar angles with a common side, a common vertex, and no common interior points are called ____ angles. A. Adjacent; vertical B. adjacent; complementary C. vertical; adjacent D.

    asked by tim on September 18, 2015
  4. physic

    The composite bar BCD in the figure is composed of an inner aluminum cylindrical core of length 2l=2m and radius R=1cm and a sleeve of steel of length L=1m and thickness R=1cm surrounding the aluminum core in the CD section of the bar. The Young’s moduli

    asked by asas on May 1, 2013
  5. thermodynamic

    Energy is added to a piston-cylinder arrangement. The piston is withdrawn in such a way that the temperature remains constant. The initial pressure and volume are 200 KPa and 2m^3, respectively. If the final pressure is 100 KPa, determine the work done by

    asked by chris on January 9, 2011
  6. statistics

    Which of the following statements are correct? a. A normal distribution is any distribution that is not unusual. b. The graph of a normal distribution is bell-shaped. c. If a population has normal ditribution, the mean and the median are not equal. d. The

    asked by Michelle on May 8, 2010
  7. statistics

    which of the following statements are correct? a. a normal distribuiton is any distribution that is not unusual. b. the graph of a normal distribution is bell-shaped. c. if a population has a normal distribution, the mean and the median are not equal. d.

    asked by jeff on August 16, 2010
  8. Algebra

    A jet plane traveling at 550 mph overtakes a propeller plane traveling at 150 mph that had a 22​-hour head start. How far from the starting point are the​ planes? The planes are ____ miles from the starting point.

    asked by Alison on September 17, 2017
  9. Science

    A sample of gas under a pressure of 622 kPa has a volume of 233 mL. The pressure is increased to 988 kPa, while the temperature remains constant. What volume will the gas occupy at this pressure?

    asked by Yasmen on June 1, 2013
  10. Physics

    The pressure of a gas in a cylinder with a movable piston is increased from 45 kPa to 90 kPa. If the temperature is held constant, and the initial volume of the gas in the cylinder is 0.5 m3, what is the final volume of the gas? a. 2 m3 b. 1 m3 c. 0.5 m3

    asked by Tommy on January 23, 2013
  11. Physics

    The pressure of a gas in a cylinder with a movable piston is increased from 45 kPa to 90 kPa. If the temperature is held constant, and the initial volume of the gas in the cylinder is 0.5 m3, what is the final volume of the gas? a. 2 m3 b. 1 m3 c. 0.5 m3

    asked by Tommy on January 23, 2013
  12. math

    Ang and Meryl have a total of 2 model airplanes in their collection. Meryl has 6 moreplanes than Ang. Which equation could be solved to find a, the number of planes Ang has? a+6=24, a+6a=24, a-6=24, or a+a+6=24

    asked by laura on January 24, 2012
  13. Chemistry

    Some hydrogen is collected over water at 10 degrees C and 105.5 kPa pressure. The total volume of the sample was 1.93 L. Calculate the volume of the hydrogen or reacted to STP.

    asked by Charlie on March 2, 2016
  14. Physics

    In Larry Niven’s science fiction novel Ringworld, a ring of material of radius 1.54 × 1011 m rotates about a star with a ro- tational speed of 1.38 × 106 m/s. The inhab- itants of this ring world experience a normal contact force ~n. Acting alone, this

    asked by helpplz on November 17, 2012
  15. Calc.

    Determine the interaction of the line of intersection of the planes x + y - z = 1 and 3x + y + z = 3 with the line of intersection of the planes 2x - y + 2z = 4 and 2x + 2y + z = 1.

    asked by Derek on July 10, 2008
  16. Physics

    1.Three forces in the x-y plane act on a 2.9 kg mass: 11.1 N directed at 20, 14.2 N directed at 131 , and 12.2 N directed at 201 . All angles are measured from the positive x-axis, with positive angles in the Counter-Clockwise direction. Calculate

    asked by Rams on September 28, 2008
  17. Physics

    A chain composed of four identical links is suspended by a rope and does not move. How many force vectors would be drawn on the free body diagram of each link and which direction would they point? My answer: ---------- FIRST LINK (top): Upward force from

    asked by Stanley on September 21, 2010
  18. Physics

    Two men lifted a total mass of 653.2 kg approximately 4 in. off the ground a total of 24 times. Estimate the total mechanical work done by the two men in lifting the boat 24 times, assuming they applied the same force to the boat during each lift. (Neglect

    asked by Sandhya on October 5, 2008
  19. CHEMISTRY

    WHAT FACTORS ARE CONSIDERED TO BE STRESSES ON AN EQUILIBRIUM SYSTEM

    asked by ANDREW on March 26, 2010
  20. solid mechanics

    describe in brief MOHR's circle for biaxial stresses.

    asked by Anonymous on February 1, 2014
  21. Finance

    Equipment cost $625,000, salvage value $50,000 at end of 10 yrs. Probability .15 Cash Flow $60,000, .25 $85,000, .45 110,000, .15 130,000 What is expect cash flow, How do I stretch out for 10 years do I multiply about out get that total and get PV from

    asked by Ron on October 6, 2011
  22. Physics

    Laser light with a wavelength = 665 illuminates a pair of slits at normal incidence. What slit separation will produce first-order maxima (i.e. m=1) at angles of 8 from the incident (or straight through) direction? Remember, 1 nm = m. Express your answer

    asked by Barry on March 17, 2012
  23. chemistry

    a balloon has the volume of 90 L at a pressure of 45 kPa. What will the volume be if the pressure increases 135 kPa.

    asked by ? on November 4, 2010
  24. Physics

    A 39.0 kg box initially at rest is pushed 4.50 m along a rough, horizontal floor with a constant applied horizontal force of 135 N. If the coefficient of friction between box and floor is 0.300, find the following. (a) the work done by the applied force J

    asked by Vince on April 28, 2013
  25. physics

    A 33.0 kg box initially at rest is pushed 5.95 m along a rough, horizontal floor with a constant applied horizontal force of 145 N. If the coefficient of friction between box and floor is 0.300. find: the work done by the applied force the increase in

    asked by gene on October 14, 2011
  26. physics

    Water flows at 0.830 m/s from a hot water heater, through a 450-kPa pressure regulator. The pressure in the pipe supplying an upstairs bathtub 3.70 m above the heater is 414-kPa. 1. What's the flow speed in this pipe?

    asked by josh on June 27, 2018
  27. physics

    Water flows at 0.860m/s from a hot water heater, through a 450-kPa pressure regulator. The pressure in the pipe supplying an upstairs bathtub 3.70 m above the heater is 414-kPa. What's the flow speed in this pipe?

    asked by sandra on November 19, 2013
  28. Physics

    A gas cylinder of volume 26 liters contains an ideal gas at temperature 27 degrees C and pressure 1920 kPa. Some of the gas leaks until the pressure falls to 1500 kPa. How many moles of gas leaked, assuming that the temperature remains constant during this

    asked by Riley on January 17, 2014
  29. Math

    Determine whether the following statements are always,sometime, or never true.Explain 1.Three points determine a plane. 2.The intersection of two planes can be a point. 1.Never true, the three points must be noncollinear. 2.Never true, the intersection of

    asked by Shadow on October 7, 2010
  30. Math

    The sum of the degrees of the interior angles of a triangle is _____ degrees What is the sum of the interior angles of a parallelogram ? What is the sum of the interior angles of a rhombus? What is the sum of the interior angles of a kite? What is the sum

    asked by Mackenzie on June 5, 2014
  31. maths

    Two planes take off from the same airport at the same time. One plane travels on a bearing S 12degreeW at 400 miles per hour. The other plane travels on a bearing N 75degreeE at 300 miles per hour. How far are the planes from each other 3 hours after

    asked by ritu on November 17, 2011
  32. maths

    Draw a right -handed rectangular reference frame with axes ranges x = -5 to +5, y = -5 to +10 , z = -5 to +5. Sketch the following planes on your reference frame. X-y plane passing through z =5, y-z plane passing through x = -2, z-x plane passing through y

    asked by gale gale on February 9, 2015
  33. AP Chemistry

    Nitroglycerin is a shock-sensitive liquid that detonates by the reaction 4C3H5(NO3)3(`) −! 6N2(g) + 10H2O(g) + 12CO2(g) + O2(g) Calculate the total volume of product gases at 205 kPa and 263C from the detonation of 2.9 lb (1315.4 g) of nitroglycerin.

    asked by Anonymous on October 15, 2013
  34. physices

      The light beam shown in the figure on the right makes an angle of 20.0° with the normal line NN’ in the linseed oil. Determine the angles θ and θ’. (Note: The index of refraction of linseed oil is 1.48.)  

    asked by Anonymous on February 4, 2013
  35. Chemistry

    you reacted magnesium with a hydrochloric acid aqueous solution and hydrogen gas was produced. Let's say that you collected the gas given off by the reaction and measured it's pressure as 102.1 kPa. If the vapor pressure of water is 16.2 kPa at this

    asked by Milo on November 29, 2017
  36. Science

    you reacted magnesium with a hydrochloric acid aqueous solution and hydrogen gas was produced. Let's say that you collected the gas given off by the reaction and measured it's pressure as 102.1 kPa. If the vapor pressure of water is 16.2 kPa at this

    asked by Mi on November 29, 2017
  37. circles

    a. To find X, you will need to add the arc measures together and set this expression equal to the total degrees of a circle and then solve for X. Must show all work. b. Here are the steps to take (show all work) 1. Plug your x-value from a into each of the

    asked by lilman on May 23, 2012
  38. Materials Science

    In this problem, you will construct the 2D Mohr's circle for two plane stress states defined in terms of the Cartesian components of the stress tensor in the x,y reference frame: [ σx,σy,τxy]. For each of these stress states, you must construct and use

    asked by qwerty on October 10, 2014
  39. socology

    10. What type of sociologist stresses a commitment to positively impacting society through sociology? Academic Applied Public Scientific 9. What are the five key social institutions that impact society? Economy, government, religion, education, and public

    asked by mace on May 8, 2013
  40. physics

    Two hundred liters of gas at zero degrees Celsius are kept under a pressure of 150 kPa. The temperature of the gas is raised to 273 degrees Celsius and the pressure is increased to 600 kPa. What is the new volume?

    asked by Anonymous on April 1, 2011
  41. physics

    A typical baseball has mass of 150 grams. Suppose a batter hits a fastball pitched to him at 92 mph (which is about 40.89 m/s). After contact, the ball's speed is measured as 104 mph (which is about 46.22 m/s) directly back at the pitcher (who is able to

    asked by Anonymous on May 12, 2013
  42. Math

    an air traffic controller spots two planes at the same altitude flying towards one another. their flight paths form a right angle at point p. One plane is 150 miles from point p and is moving 450mph. the other plane is moving at 450mph but is 200 miles

    asked by David on September 9, 2012
  43. Math

    an air traffic controller spots two planes at the same altitude flying towards one another. their flight paths form a right angle at point p. One plane is 150 miles from point p and is moving 450mph. the other plane is moving at 450mph but is 200 miles

    asked by Ryan on September 9, 2012
  44. Precalculus

    an air traffic controller spots two planes at the same altitude flying towards one another. their flight paths form a right angle at point p. One plane is 150 miles from point p and is moving 450mph. the other plane is moving at 450mph but is 200 miles

    asked by David on September 9, 2012
  45. 11th grade-Math!

    an air traffic controller spots two planes at the same altitude flying towards one another. their flight paths form a right angle at point p. One plane is 150 miles from point p and is moving 450mph. the other plane is moving at 450mph but is 200 miles

    asked by Amy on November 9, 2008
  46. physics

    A 110 g ball has a kinetic energy 39.8 J. What's the magnitude of its momentum? Use your answer to find its speed. K=p^2/2m 39.8=p^2/(2*110) 8756=p^2 p=93.5735 kg*m/s ^this is wrong though. where did I go wrong?

    asked by lizbeth on February 18, 2016
  47. Phyics

    Could you please check my work, I am not too sure what do. An airplane that flies at 100 km/h with a 10 km/h tailwind travels at 110 km/h relative to the ground. If it instead flies into a 10 km/h headwind, its groundspeed is : 110 km/h /2= 55 km/h

    asked by Soly on August 30, 2007
  48. geometry

    Please respond to the following essay question: Draw and label 2 parallel lines as line m and line n. Add a transversal to your drawing and label it line p. Label all of the angles formed as #1-8. Use your drawing to respond to the following: a) Name four

    asked by nariah on November 23, 2015
  49. math please explian

    an invoice for office supplies is shown below. Based on the informstion in the invoice calculate the invoice total Note: Shipping charges are $ 110.10 Stock number quantity unit merchandise description unite price 24795 150 ea calculator $10.63 32678 150

    asked by Lucy on May 18, 2008
  50. Math(geometry)

    I need to know how to find the meausure of a triangle using vertical angles, and also how to measure a triangle using linear pairs... Oh, I hope I'm not too late with an answer for you... To measure a triangle using linear pairs, you have to use the

    asked by Dani on October 3, 2006
  51. Chemistry

    Oxygen can be produced in the laboratory by the reaction 2 KClO3(s) → 2 KCl(s) + 3 O2(g) . How much potassium chlorate is needed to produce 2.75 L of oxygen, collected over water at 37◦C and 94.9 kPa? The vapor pressure of water at 37◦C is 6.28 kPa.

    asked by Caitlin on November 20, 2012
  52. geometry

    if a polygon has 53 sides, what will the total number of degrees (i,e. the total number of interior angles) in this polygon

    asked by zyan on February 2, 2011
  53. math

    in the problem -10+6g=110 would you plus or minus the -10 from the 110?

    asked by jill on January 5, 2012
  54. Geoometry Help: Find EF

    ABC~DEF AB = 36, BC = 24, DE = 48 m

    asked by Michelle on March 29, 2013
  55. math

    Thank you for you help. The pie chart below shows how the total annual income for a certain family is spent. If the total annual income is 110,000 , what amount is budgeted for Savings, Housing, and Auto combined? Saving is 18%, housing is 21% and auto is

    asked by mary ann on January 24, 2015
  56. Physical Science

    During a storm, the wind exerts a 150-N force on a window that measures 1.00 m by 0.50 m. The outside air pressure is 101 kPa. What pressure, in pascals, does the wind exert on the window? a. 75 Pa b. 150 Pa c. 1.5 x 10^3 Pa d. 3.0 x 10^2 Pa e. 3.0 x 10^5

    asked by Ariel on March 21, 2012
  57. Chemistry

    PLEASE HELP!! On a clear day at sea level, with a temperature of 25 °C, the partial pressure of N2 in air is 79 kPa and the concentration of nitrogen in water is 5.3 x 10-4 M. When the partial pressure of N2 is ________ kPa, the concentration in water is

    asked by Henry on May 25, 2012
  58. Chemistry

    What is the vapor pressure of a solution composed of 3.0 moles benzene (vapor pressure 12.1 kPa) & 1 mole chloroform (vapor pressure 25.2 kPa)

    asked by Anonymous on January 16, 2008
  59. MATH

    Travel Time A company president flew 680 miles one way in the corporate jet but returned in a smaller plane that could fly only half as fast. If the total travel time was 6 hours, find the speeds of the planes. how would I set up this problem?

    asked by jennifer on September 25, 2008
  60. physics

    a 65kg oak trunk is placed on a board, inclined at an angle of 30 with the horizontal. What is the weight? The Normal Force of the trunk? The Applied force down the ramp?

    asked by Liam on November 18, 2012
  61. chemistry

    An automobile tire contains air at a pressure of 200. kPa and 25°C. The tire and its air heat up during traveling. If the pressure increases to 250. kPa but the volume remains the same, what is the temperature of the air inside the tire?

    asked by hi on April 10, 2013
  62. Physics (dynamics)

    While standing on a horizontal frictionless surface, a 50 kg student pushes against a wall with an average force of 125 N east for 0.110 s. Calculate the velocity of this student at 0.110 s

    asked by Anonymous on March 29, 2011
  63. Math - Please Check My Answer

    Please help me with the following: Which of the following statements most accurately describes the difference between 3x^0 and (3x)^0, if a difference exists? A. There is no mathematical difference between 3x^0 and (3x)^0. The two are equivalent

    asked by Brady on October 2, 2014
  64. Statistics

    1. Which of the following statements are correct? a. A normal distribution is any distribution that is not unusual. b. The graph of a normal distribution is bell-shaped. c. If a population has a normal distribution, the mean and the median are not equal.

    asked by Jackie on April 19, 2010
  65. Statistics

    Which of the following statements are correct? 1.A normal distribution is any distribution that is not unusual. 2.The graph of a normal distribution is bell-shaped. 3.If a population has a normal distribution, the mean and the median are not equal. 4.The

    asked by Christy on July 14, 2010
  66. statistics

    Which of the following statements are correct? a. a normal distribution is any distribution that is not unusual b. the graph of a normal distribution is bell-shaped c. if a population has a normal distribution, the mean and the median are not equal d. the

    asked by Christine on May 11, 2010
  67. statistic

    1. Which of the following statements are correct? a. A normal distribution is any distribution that is not unusual. b. The graph of a normal distribution is bell-shaped. c. If a population has a normal distribution, the mean and the median are not equal.

    asked by Sonia on August 24, 2011
  68. physics

    Let the radius oh a circular segment be 110 m, the mass of the car 1508 kg, and the coefficient of the static friction between the road and tire 0.9. Find the magnitude of the normal force N which the road evers on the car at the optional speed (the

    asked by Kyra on October 12, 2011
  69. Calculus III

    Consider a room ten units long in the x, y, and z directions. Speci cally, the walls of the room are the four planes, x = 0, x = 10, y = 0, and y = 10, and the floor and ceiling are z = 0 and z = 10,respectively. A flat triangular mirror is mounted in one

    asked by Sarah on September 8, 2010
  70. Physics

    Two boxes on a horizontal surface, as shown in the figure above, are moving together under the influence of a horizontal force, F. The coefficient of kinetic friction between the boxes and the surface is 0.40. Use g = 10 m/s2. In case (a), a horizontal

    asked by Jeanne on October 10, 2011
  71. Chemistry

    Methanol ---> Normal BP: 64.6°C --> dHvap: 35.3kJ/mol iso-Propanol ---> Normal BP: 82.3°C --> dHvap: 45.4kJ/mol Cyclohexane ---> Normal BP: 80.7°C --> dHvap: 33.1kJ/mol Question: Ethanol has a normal BP of 78.3°C. Why is the normal BP higher than

    asked by May on February 13, 2015
  72. Physics

    The lenses used in a compound microscope have powers of + 110 D and + 60 D . If a total magnification of -150 × is desired, what should be the distance between the two lenses?

    asked by Kim on March 19, 2017
  73. Physics (2)

    I have this number where they give me the coordinates of 3 particles and the mass of each one of them. Afterwards, there's a force applied on 2 of those particles and they ask me to calculate the systems total moment of inertia. But then they ask me this:

    asked by Raf on February 21, 2012
  74. Physics

    At one end of the Venturi Tube the pressure and speed of flowing water is 21 kPa and 0.05m/s respectively. At another point the pressure is 5 kPa. Find the speed of the water at the second point. Answer in m/s

    asked by Anonymous on May 30, 2016
  75. science

    At a pressure 43 kPa, the gas in a cylinder has a volume of 11 liters. Assuming temperature remains the same, if the volume of the gas is decreased to 5 liters, what is the new pressure? kPa Im guessing it 58 or 77x10^3

    asked by heather on August 18, 2017
  76. ap chemistry

    Nitroglycerin is a shock-sensitive liquid that detonates by the reaction 4C3H5(NO3)3(`) −! 6N2(g) + 10H2O(g) + 12CO2(g) + O2(g) Calculate the total volume of product gases at 210 kPa and 296C from the detonation of 2.7 lb (1224.7 g) of nitroglycerin.

    asked by cheri on February 10, 2013
  77. math

    A city planning engineer in Cleveland must check the 10 angles that make up the three intersections on the map of downtown. If any of the angles formed by the intersections of the streets is greater than 135°, different road signs have to be used due to a

    asked by pihhy on April 28, 2018
  78. economics

    The hand made snuffbox industry is composed of 100 identical firms, each having short-run total costs given by STC=0.5q^2+10q+5 and short-run marginal costs by SMC=q+10 where q is the output of snuffboxes per day. a. What is the short-run supply curve for

    asked by jennifer on November 3, 2007
  79. Mathematics

    Are the figures below similar? Why or why not?(Use the link below. You cannot directly copy then paste it to another tab, you need to delete the spaces in the link then enter into the website showing the picture to answer this question.) gyazo . com /

    asked by Derpy Hooves on November 21, 2012
  80. physics

    two forces of 62N and 95N are acting on an object at an angle of30 degree and 60 degree from horizontal in opposite direction . find out total force experienced by the object in horizontal and vertical planes?

    asked by anupriya on May 22, 2012
  81. psychology

    A developmental psychologist who stresses the importance of the social clock would be likely to agree that:

    asked by godfrey on August 7, 2014
  82. Physics

    An engineer is designing a runway for an airport. Several planes will use the runway and the engineer must design it so that it is long enough for the largest planes to become airborne before the runway ends. The largest plane accelerates at 3.30 m/s2 and

    asked by grace on October 24, 2010
  83. Science

    A pressure of 2 KPa is acting on a gas with a volume of 60 liters. If the pressure decreases to 1 kPa, what volume will the gas occupy?

    asked by Danielle on May 5, 2011
  84. Physics Dynamics

    A sled of mass m = 70.0 kg is being pulled horizontally on a frictionless floor by a force F = 420 N that makes an angle 20.0o above the horizontal. What is the magnitude of the normal force applied by the ground on the sled?

    asked by Anonymous on February 13, 2015
  85. Physics - Question

    I have this number where they give me the coordinates of 3 particles and the mass of each one of them. Afterwards, there's a force applied on 2 of those particles and they ask me to calculate the systems total moment of inertia. But then they ask me this:

    asked by Raf on February 22, 2012
  86. English

    Which statement most accurately contrasts the ideas of different literary periods? A. Anglo-Saxon literature focuses on free will, whereas Renaissance literature suggests that human beings are controlled by fate. B. Literature of the Middle Ages focuses on

    asked by Emi on March 11, 2015
  87. math

    Hello I v got 4 question with answers .. Could somebody check that for me,please. 1.If two angles of a triangle add up to 110^what is the size of the third angle? I think is 55 2.Three children shared £6 Bred received 1/4 Lynsey was given 1/3 and James

    asked by DAMIAN on January 29, 2014
  88. Math(Calculus)

    Ok I have a bunch of questions, please bare with me and i'd appreciate it VERY much if you could help me with these! 1. Assume that you are given the equations of three planes. Without solving the system, describe a "test" with rationale, that you could

    asked by rick on August 12, 2010
  89. chemistry

    A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressu of the three gases in the tank are 5 atm of O2, 900 mm Hg of N2, and 1.4 kPa of He what total pressure inside of the tank?

    asked by karen on February 1, 2016
  90. Chemisrty

    Temp c KBr 20 65 40 80 60 90 80 100 100 110 At 100 C, 10.5 g KBr/10gH2O = 105 g/100 g (just multiply the top and the bottom by 10 to give you 100 g H2O) B) Since the solubility at 100C is actually 110, no, it isn't saturated (105 is less that 110). C) Yes,

    asked by Monster on May 18, 2011
  91. Math

    What is the difference of applied, basic and pure research? So my thoughts is applied research is done to determine something happens and applied research is the application of knowledge. Can you give an example of a question that would guide applied

    asked by Tameika on April 18, 2013
  92. Physical Science

    What is the total number of electrons in a normal atom of hydrogen?

    asked by casey on February 19, 2008
  93. Math

    Select all that are true With which information can you construct more than one triangle? The measurements of two angles The measurements of two angles and the length of the included side The measurement of all angles The lengths of two sides and the

    asked by Anonymous on June 22, 2017
  94. math

    A broken clover has 2 leaves, a normal clover has 3 leaves, and a luckey clover has leaves. Ia a bunch of these clovers, there are twice as many normal clovers as broken clovers and 5 times as many normal clovers as lucky clovers. the bunch has a total of

    asked by Dharma on March 9, 2011
  95. Chemistry

    Mg + 2HCl -> MgCl2 + H2 Over an interval of 1.00s, the mass of Mg changes by -0.011g What is the corresponding rate of consumption of HCl (in mol/s)? I got 9.0E-4 mol/s and that's the right answer. But I'm having problems with the next question. Calculate

    asked by a Canadian on February 24, 2013
  96. Math Question

    Which one of the following pairs of triangle must be similar? a) two isosceles triangles with congruent vertex angles b) two right triangles c) two scalene triangles with congruent bases d) two obtuse triangles a) if the two vertex angles are the same then

    asked by Becky on March 4, 2007
  97. Algebra

    Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 5 liters, the pressure is 158 kPa (kilopascals). What is the volume when the pressure is 395 kPa?

    asked by Anonymous on March 8, 2016
  98. phsyics

    please I really need help with these 1. A man pulls a 300 N object across a horizontal surface using a 100 N force applied at a 35° angle. What is the normal force? If the object is pulled at constant speed, what is the coefficient of friction?

    asked by physics LSU on October 13, 2010
  99. physics

    1. A man pulls a 300 N object across a horizontal surface using a 100 N force applied at a 35° angle. What is the normal force? If the object is pulled at constant speed, what is the coefficient of friction

    asked by devin boutte on October 13, 2010
  100. Physics

    A 23 kg suitcase is being pulled with a constant speed by a handle that is at an angle of 25° above the horizontal. If the normal force exerted on the suitcase is 155 N, what is the force F applied to the handle? and.. A paleontologists estimate that if a

    asked by amy on January 13, 2010