# How to figure out the temperature of a lake using x for the feet or the Depth and for the degrees Celsius use (3900x+1000)/(3x^2+100) with the answer of the degrees celsius being 8.44 looking like 8.44=(3900x+1000)/(3x^2+100) i need the depth

34,877 questions, page 309
1. ## Math

Peanuts, walnuts, and cashews are mixed by volume in the ratio 5:3:2, to make a party snack. The number of cups of walnuts needed to make 12 cups of party mix are between: a) 1 and 2 b) 2 and 3 c) 3 and 4 d) 4 and 5 Math - Ms. Sue, Monday, February 20,

asked by Terrence on February 20, 2017
2. ## chemistry

Lead iodide, PbI2, has a Ksp in water of 7.1e-9 M3 at room temperature. Calculate the solubility of PbI2 in water. Express your answer in grams per liter. What is the solubility of PbI2 in 0.1 M NaI (aq)? Express your answer in grams per liter.

asked by Dick on December 21, 2013

Two objects A and B have the same mass and the same specific heat. Object A is heated from 30°C to 70°C and object B is cooled from 70°C to 30°C. How are the thermal energies of the two objects related after the temperature change has occurred? A. The

asked by Morgan on November 22, 2014
4. ## Math

I've been working on this problem for HOURS and I still can't figure it out. It's due by tomorrow. And I'm so frustrated. DX I know I have to convert ounces into gallons, but I can't find a path at all. DX Here is the question: I need to mix the gas with

asked by Kiki on November 17, 2008

1. An ionic compound solution is a(an)________ of electric current. non-conductor absorber emitter good conductor reverser ans: good conductor 2. Hydrogen bonding in water accounts for water's higher than expected boiling temperature the fact that ice

asked by Mary on February 24, 2008
6. ## Physics

A person on top of a wall of height 3.4 m stands near the edge, leans over and tosses a putty wad of mass 1.3 kg vertically into the air as shown in the figure below. The wad reaches a maximum of 4 m above the top of the wall. The wad then comes down and

asked by kelly on February 20, 2011
7. ## math

A tree that is 3 feet tall is growing at a rate of 1 ft per year. A 5 ft tree is growing at a rate of 0.75 ft per year. The ordered pair (t, h)(t, h) represents the time, t, at height, h. Which ordered pair represents the year when the trees will be the

asked by Jay on January 6, 2017
8. ## Calculus

1) A rectangular page is to contain 16 square inches of print. The page has to have a 2-inch margin on top and at the bottom and a 2-inch margin on each side. Find the dimensions of the page that minimize the amount of paper used. 2) A rectangular garden

asked by Gary on March 5, 2015
9. ## Chemistry

a 20.94-g sample of an unknown metal is heated to 99.4 degrees Celsius in a hot water bath until thermal equilibrium is reached. The metal is quickly transferred to 100 mL of water at 22.0 degrees Celsius contained in a styrofoam cup. The thermal

asked by Dalal on April 10, 2018
10. ## physics

asked by Kristie on March 29, 2012
11. ## PHYSICS HEL ME ......................JORHO........

The “Vomit Comet.” In Zero-gravity astronaut training equipment testing, NASA ﬂies a KC135A aircraft along a parabolic ﬂight path. As shown in Figure P4.47, the air-craf climbs from 24000ft to 31000ft,where it enters a parabolic path with a

asked by JORHO on January 9, 2013

Ok, I have to answer questions on these 2 poems, and I can't figure them out... The Golf Links Lie So Near The Mill by Sarah N. Cleghorn The golf links lie so near the mill That almost every day The working children can look out And see the men at play.

asked by Taryn on September 21, 2008
13. ## Biology

1. All fungi are ~photosynthetic ~heterotrophic ~autotropic ~parasitic 2. What structure is missing in the fungal hypae shown on the right side of Figure 21-5? ~cell walls ~cross walls ~nuclei ~cytoplasm 3. Which of the following is true of fungi? ~Like

asked by Becky on May 18, 2016
14. ## Biology

1. All fungi are ~photosynthetic ~heterotrophic ~autotropic ~parasitic 2. What structure is missing in the fungal hypae shown on the right side of Figure 21-5? ~cell walls ~cross walls ~nuclei ~cytoplasm 3. Which of the following is true of fungi? ~Like

asked by Harley on May 21, 2016
15. ## Check my Essay: Rock Climbing

Rock Climbing Rock Climbing can be a tough sport, indoors or outdoors, but it can also be fun and adventurous. If you do not have the proper knowledge of clothing/equipment and techniques, then maybe rock climbing isn’t for you. Rock climbing can be

asked by ilikezackalot on February 3, 2014
16. ## Physics with Calculus

The system shown in the figure is in static equilibrium. The rod of length L and mass M is held in an unpright position. The top of the rod is tied to a fixed vertical surface by a string, and a force F is applied at the midpoint of the rod. The

asked by Rico on November 8, 2014
17. ## english

What is the topic sentence? Nearly everyone is familiar with the dark silhouette of the giant saguaro, its arms thrust stiffly out. However, few people have actually seen this awe-inspiring plant in its natural habitat, since it is found only in the desert

asked by nathan on June 1, 2011
18. ## physics

NEEDS HELP PLEASE!! A 100kg shot putter is putting a shot 4kg. Just before he releases the shot, he is in the air (feet are off the ground). At this instant, the only force he exerts against the shot is an 800N horizontal force directed forward. a-what is

asked by sam on March 2, 2015
19. ## Trigonometry

When viewing Angel Falls (the world's highest waterfall) from Observation Platform A, located on the same level as the bottom of the waterfall, we calculate the angle of elevation to the top of the waterfall to be 69.30°. From Observation Platform B,

asked by Anonymous on June 16, 2012
20. ## physics

A 100kg shot putter is putting a shot 4kg. Just before he releases the shot, he is in the air (feet are off the ground). At this instant, the only force he exerts against the shot is an 800N horizontal force directed forward. a-what is his horizontal

asked by aaron on March 1, 2015
21. ## Trigonometry

When viewing Angel Falls (the world's highest waterfall) from Observation Platform A, located on the same level as the bottom of the waterfall, we calculate the angle of elevation to the top of the waterfall to be 69.30°. From Observation Platform B,

asked by Tim on June 16, 2012
22. ## math check

Would some please check these and see if I am doing them right thank you 1. Gasoline is about \$2 per gallon. You use about 1 1/2 gallons each day driving to and from work. How much should you budget for gasoline over the next month (about 20 workdays)?

asked by tara on January 5, 2007
23. ## Chemistry

The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1.000 g glucose is combusted in a bomb calorimeter. If the calorimeter contains 875 g H2O and the bomb has a heat capacity of 457 J/C, what is the temperature increase of the bomb

asked by Kyle on October 11, 2012
24. ## Chemistry

The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1.000 g glucose is combusted in a bomb calorimeter. If the calorimeter contains 875 g H2O and the bomb has a heat capacity of 457 J/C, what is the temperature increase of the bomb

asked by Kyle on October 11, 2012
25. ## Chemistry

The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1.000 g glucose is combusted in a bomb calorimeter. If the calorimeter contains 875 g H2O and the bomb has a heat capacity of 457 J/C, what is the temperature increase of the bomb

asked by Kyle on October 11, 2012
26. ## Mechanics/Physics

HW7_1B_2 : 5.0 POINTS Let's say that a cross section where you have M+max is at location x+max, and the cross section where you have M−max is at location x−max. Use the MATLAB window below to plot the profiles of stress on sections x+max and x−max,

asked by Dude on June 30, 2013
27. ## physics

Part 1 A motorist traveling at 17 m/s encounters a deer in the road 48 m ahead. If the maximum acceleration the vehicle’s brakes are capable of is −5 m/s^2, what is the maximum reaction time of the motorist that will allow her or him to avoid hitting

asked by amanda and leah on September 9, 2012
28. ## science hw

I cannot figure out this answer. It is confusing me a lot. I hate problems like this where all of the problems just switch beginnings and endings with each other. The combination of the sand and water makes for a ____________ _____________ because A)

asked by josh on February 14, 2008
29. ## AP Chemistry

The reaction of the molecules to produce ethane is C2H4(g) + H2(g) ÃƒÂ¢Ã¢â‚¬Â Ã¢â‚¬â„¢ C2H6(g). A mechanism for this reaction is shown below: (The figures show how the ethene molecule with two hydrogen molecules attached 'binds' to

asked by Sophie on April 1, 2018
30. ## physics

Calculate the tension in a vertical strand of spider web if a spider of mass 8.00Ãƒâ€”10Ã¢Ë†â€™5 kg hangs motionless on it. (b) Calculate the tension in a horizontal strand of spider web if the same spider sits motionless in the middle of

asked by Anonymous on May 21, 2017
31. ## Calculus

At the scene of an accident, there are skid marks which are 200 feet long showing where a car put on the brakes. The driver swears that he was obeying the speed limit. If we assume that the car braked with a constant deceleration of 16ft/sec^2. We can

asked by Naomi on April 4, 2017
32. ## Physics

A rocket-powered hockey puck moves on a horizontal frictionless table. The figure below shows the graphs of vx and vy, the x- and y-components of the puck’s velocity. The puck starts at the origin. The graph of the X-velocity is v=8t cm/s and the

asked by Eric on September 11, 2015
33. ## physics

A projectile of mass 0.528 kg is shot from a cannon, at height 6.7 m, as shown in the figure, with an initial velocity vi having a horizontal component of 7 m/s. The projectile rises to a maximum height of 3.8 m above the end of the cannon’s barrel and

asked by Anonymous on January 22, 2015
34. ## physics

A 37.0 g ice cube at -15.0 degreesC is placed in 224 g of water at 48.0 degreesC. Find the final temperature of the system when equilibrium is reached. Ignore the heat capacity of the container and assume this is in a calorimeter, i.e. the system is

asked by Idali on April 11, 2017
35. ## physics

A 37.0 g ice cube at -15.0 degreesC is placed in 224 g of water at 48.0 degreesC. Find the final temperature of the system when equilibrium is reached. Ignore the heat capacity of the container and assume this is in a calorimeter, i.e. the system is

asked by idali on April 6, 2017
36. ## Physics

7.7 mol of helium are in a 16 L cylinder. The pressure gauge on the cylinder reads 65psi. What are (a) the temperature of the gas in Celsius and (b) the average kinetic energy of a helium atom? p=65psi=4.481592E5 p=65psi=4.42atm n=7.7mol v=16=.016m^3 T =

asked by ana on November 22, 2009
37. ## physics

A 37.0 g ice cube at -15.0 degreesC is placed in 224 g of water at 48.0 degreesC. Find the final temperature of the system when equilibrium is reached. Ignore the heat capacity of the container and assume this is in a calorimeter, i.e. the system is

asked by Idali on April 4, 2017
38. ## FAST MATH HELP!

I can't remember the abbreviation for decimeter! Abbreviation: dm thanks hey.... the abb is dm.. 1. Factor 4m²+40m+100 2. The area of a circle is given by the equation A = ð(25x²+10x+1). Find an expression for the radius. 3. The bed of a pond can be

asked by Jenna on March 7, 2007
39. ## Math

I need help with these problems. I've gone over the material a lot, and I just don't understand! Please help fast, test is tomorrow! 1. Factor 4m²+40m+100 2. The area of a circle is given by the equation A = ð(25x²+10x+1). Find an expression for the

asked by Marie on April 12, 2007
40. ## science

h t t p: / / tinypic . co m/r/f2vw1w/3 In the link above (take out the spaces) there is supposed to be a picture representing a foodweb. 1. Which letter is the producer? Is it A? 2. I'm not sure what B and C would represent? A. producer B. primary consumer

asked by casey on August 30, 2009
41. ## physics

An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

asked by Akbar on June 13, 2012
42. ## physics need help plz

An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

asked by Akbar on June 8, 2012
43. ## physics

An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

asked by Akbar on June 7, 2012
44. ## Physics

An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

asked by Akbar on June 11, 2012
45. ## physics

An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

asked by Akbar on June 11, 2012
46. ## English

This is the title of my ESSAY paper: United States vs. Denmark: Which health system works better for the citizens of the nations? I need to put this into a title for my paper (

asked by rosa on June 6, 2011
47. ## CHEM HELP!

A car burning lead-free fuel has a catalytic converter fitted to its exhaust. On analysis its exhaust gases are shown to contain small quantities of nitrogen oxides. Which modifications would result in lower exhaust concentrations of nitrogen oxides? 1 an

asked by Ariana on September 30, 2014
48. ## Chemistry

CH4 (g)+ H2O (g) --->/

asked by Student on February 29, 2016
49. ## Chemistry

CH4 (g)+ H2O (g) --->/

asked by Student on February 29, 2016
50. ## algebra

Please can someone help me with these? factoring 2x^2+5x-3 and 3x^2-15x+12 Thanks in advance!!! well rose. you nedd to distrubte the first one or find the gcf but there anit one, the second one do the same thing. for further questions just ask. How can I

asked by Rose on May 2, 2007
51. ## Physics

Can someone please give me some insight on how to work this problem? A rotating door is made from four rectangular glass panes, as shown in the drawing. The mass of each pane is 85 kg. A person pushes on the outer edge of one pane with a force of F = 63 N

asked by Jim on March 21, 2007
52. ## 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
53. ## AP Chemistry Help!

I had to conduct an experiment to find the enthalpy of reaction for : 4Fe + 3O2 + 6H2O ----> 4Fe(OH)3 In the experiment , I started with an inital temperature of 22.3 C and edned with 36.7 C so the delta T is +14.4C. Now it's telling me to calcualte the

asked by Jessica on November 1, 2016
54. ## ecology

An air conditioner lowers the temperature of the surrounding air. water condensed from the air is most likely to run out of the bottom water hose of a automobile air condition when the air entering the air conditioner. a- contains dust and pollen b- is

55. ## physics

A skier starts from rest at the top of a frictionless incline of height 20.0 m, as shown in the figure. At the bottom of the incline, the skier encounters a horizontal surface where the coefficient of kinetic friction between skis and snow is 0.208.

asked by josef on March 6, 2015
56. ## chemistry

you wish to combine two samples, one sample contains is solid water at 0 degree celsius.The other sample contains liquid water at 100 degree celsius,you want to combine both raise the temperature to 100 but boil off only 50 ml to gas phase keep the rest as

asked by treasa on May 30, 2014
57. ## english

English III – Unit 1: The Uses and Varieties of English PROJECT: ETYMOLOGY Instructions Look up the following words. Give the etymology of each. State what kind of term, such as mathematical, scientific, political science, history, etc. Include the name

asked by OdysseyWare on September 5, 2012
58. ## physics

What is the wind speed in m/s required to keep a great white shark suspended in midair during a summer day on the California beach? Details and assumptions Model the shark as a horizontal cylinder 6 m long and 1 m in diameter. The air is at a pressure of 1

asked by nathaniel on July 23, 2013
59. ## physics

What is the wind speed in m/s required to keep a great white shark suspended in midair during a summer day on the California beach? Details and assumptions Model the shark as a horizontal cylinder 6 m long and 1 m in diameter. The air is at a pressure of 1

asked by andy on July 24, 2013
60. ## A.P Chemistry

A rigid 5.00 L cylinder contains 24.5g of N2(g) and 28.0g of O2(g). (a). Calculate the total pressure, in atm, of the gas mixture in the cylinder at 298 K (b) The temperature of the gas mixture in the cylinder is decreased to 280 K. Calculate each of the

asked by Brianna on October 22, 2006
61. ## ap chemistry :(

consider the reaction C6H14 + 9.5O2 yields 6CO2 + 7H2O at constant pressure. which response is true? 1. work may be done on or by the system as the reaction occurs, depending upon the temperature. 2. work is done on the system as the reaction occurs. 3. no

asked by sam on October 18, 2012
62. ## Algebra

The water level, w, in feet, of a river after a rainstorm is a function of the time, t, in hours, since the storm began. The table below shows the water level readings collected at different times. Hours Since Storm Began (t) Water Level (w) 1 18.7 1.5

asked by Klauus on March 8, 2019
63. ## Math/Trig

From an observation tower that overlooks a runway, the angles of depression of point A, on one side of the runway, and point B, on the opposite side of the runway are 6 degrees and 13 degrees respectively. The points and the tower are in the same vertical

asked by Renee on February 12, 2015
64. ## math

The velocity(in feet per second) of a bouncing ball was recorded every second. The table shows the velocity for each second. Time(sec):|1|2|3|4|5| Velocity(ft/sec)|-15|-6|2|10|-11| What is the average velocity of the bouncing ball over 5 seconds? What is

asked by Kai-Cin on October 28, 2013
65. ## Chemistry-

PCl5 (g) PCl3 (g) +Cl2 what is the property that might be observed in order to determine when equlibrium has been reached? The question is a little vague. Is the property visual or some other property? I don't think vision (color) will work for PCl5 is a

asked by Mike on May 2, 2007
66. ## chemistry

Here is the question: A sample of ethanol, C2H5OH, weighing 2.84g was burned in an excess of oxygen in a bomb calorimeter. THe temperature of the calorimeter rose from 24C to 33.73C. If the heat capacity of the calorimeter and contents was 9.63 kj/C. What

asked by Capacino on June 24, 2009
67. ## trig

L ii i i i i i i i i A i i i i i i i i i i 4000 miles i i i i E ii right triangle have to find side EL. The range of a lighthouse is the maximum distance at which its light is visible. In the figure, point A is the farthest point from which it is possible

asked by Taylor on October 27, 2011

A 0.386g sample of a protein was dissolved in water and made up to a volume of 60mL at 21.0°C. At this temperature the osmotic pressure of this solution was 1.24mmHg. Calculate the molecular mass of the protein 12682 g mol-1 95025 g mol-1 9627613 g mol-1

asked by lulu on October 9, 2010
69. ## trig

a building 60 feet high. from a distance at point A on the ground, the angle of elevation to the top of the building is 40 degree. from a little nearer at point B, the angle of elevation to the top of the building is 70 degree. What's the distance between

asked by Anonymous on March 18, 2016
70. ## Algebra

Juan and Anita are standing together in the schoolyard. Juan, who is 6 feet 2 inches tall, casts a shadow that is 54 inches long. At the same time, Anita casts a shadow that is 46 inches long. How tall is Anita?: a. 86.4 in. b. 5 ft 3 in. c. 5 ft 1 in. d.

asked by Mike on March 11, 2008
71. ## math

Juan and Anita are standing together in the schoolyard. Juan, who is 6 feet 2 inches tall, casts a shadow that is 54 inches long. At the same time, Anita casts a shadow that is 46 inches long. How tall is Anita?

asked by -- on September 22, 2007
72. ## HELP MS.SUE MATH 5TH GRADE

Theresa wanted to find the height of her school's flagpole in inches. Theresa is 5 feet and 2 inches tall. She estimated that the flagpole was about 10 times her height, so she created the formula below to find the flagpole's height. height = (12 x 5 + 2)

asked by Eden S. on December 15, 2013
73. ## Chemistry

What is the molar heat of reaction? When 0.732 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 119C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC.

asked by Chris on February 17, 2010
74. ## physics

2. Rod A, which is 30 cm long, expands by 0.045 cm when heated from 0°C to 100°C. Rod B, also 30 cm long expands by 0.075 cm for the same change in temperature. A third Rod C, also 30 cm long is made up of the materials of rod A and B, connected end to

asked by Anonymous on February 13, 2012
75. ## physics

What is the final equilibrium temperature when 40.0 grams of ice at 0°C is mixed with 5.00 grams of steam at 120°C? The specific heat of ice is 2.10 kJ/kg °C, the heat of fusion for ice at 0°C is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg °C,

asked by athirah on March 5, 2016
76. ## Math

The top horizontal edge of the rectangle measures 17 centimeters, the left vertical edge of the rectangle measures 22 centimeters, and the bottom horizontal edge measures 17 centimeters. The left vertical leg is on the right edge of the rectangle, with v

asked by Sliverstream on March 18, 2019
77. ## Science

To create less waste in the first place is to a. reduce (?) b. reuse (?) c. recycle d. incinerate Hi. So, for this question, i completely understand what it's asking but i can't figure out which one it would be. Incinerate means to burn waste, but that

asked by Anon on November 9, 2017

A young woman named Sassy Sue purchases a sports utility vehicle that can accelerate at the rate of 4.88m/s^2. She decides to test the car by dragging with another speedster, McSpeedy. Both start from rest, but experienced McSpeedy leaves 1.0s before Sue.

asked by Haley on September 12, 2007
79. ## math

3 MEN GO INTO A MOTEL. THE MAN BEHIND THE DESK SAID THE ROOM IS \$30, SO EACH MAN PAID \$10 AND WENT TO THE ROOM. A WHILE LATER THE MAN BEHIND THE DESK REALIZED THE ROOM WAS ONLY \$25, SO HE SENT THE BELLBOY TO THE 3 GUYS' ROOM WITH \$5. ON THE WAY, THE

asked by bo on June 7, 2007
80. ## Math

The graph represents the height y, in feet, above the ground of a golf ball x seconds after it is hit. The maximum height of the golf ball occurs at x = 2. For up to 2.5 s after the ball is hit, its height is increasing. The maximum height of the golf ball

asked by crambles on March 6, 2018
81. ## Poetry

Can you please revise my sonnet for me? Nature: When I go out into nature, what do I see? There are plenty of things on a warm summer day It might be a bird, it might be a bee Or it might be a child engaged in play. I can feel the grass on my feet, green

asked by mysterychicken on November 2, 2008
82. ## Chemistry

For the reaction NO2(g) + NO(g) = N2O3(g) If at particular temperature, K was 575 and equilibrium concentration of N2O3(g) was 2.5 M, calculate the equilibrium concentrations of NO2(g) and NO(g) if they both had the same initial concentrations. i have my

asked by Sara on September 25, 2011
83. ## Physics

A block of weight = 25.0 N sits on a frictionless inclined plane, which makes an angle = 34.0 with respect to the horizontal, as shown in the figure. A force of magnitude F= 14.0 N, applied parallel to the incline, is just sufficient to pull the block up

asked by Eden on October 17, 2010
84. ## Superhard Riddle

I need to solve a riddle but I can't figure it out. Apparently love/happiness/purpose is wrong! "Every single person that exists has had some of me and wanted some of me, but I am different for everyone. Sometimes I will never be found and sometimes I

asked by the brainbusted on February 2, 2007
85. ## Precalculus

There are 4 rectangular corrals of identical dimensions along the back wall of an existing barn using 200 ft of fencing. The diagram has 4 rectangular corrals attached together but fencing is not needed on the back wall of the barn. The barn is above the 4

asked by Cole on October 5, 2012
86. ## 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
87. ## chem

Ca(H2PO4)2 and NaHCO3 are ingredients of baking powder which react with each other to produce CO2, thereby causing dough or batter to rise: Ca(H2PO4)2 (s) + NaHCO3 (s) -----> CO2 (g) + H2O (g) + CaHPO4 (s) + Na2HPO4 (s) (unbalanced) If the baking powder

asked by fru on September 22, 2008
88. ## Physics

A sealed container of volume 0.10 m3 holds a sample of 3.0 x 10^24 atoms of helium gas in equilibrium. The distribution of speeds of helium atoms shows a peak at 1100 ms-1. Caluculate the temperature and pressure of the helium gas. (helium atom 4.0 amu)

asked by Oli on May 19, 2008
89. ## Pre-Calc

A vehicle has an engine that is connected directly to a gear box. In the highest gear, a 2 inch radius gear is turning a 14 inch diameter gear. This gear is connected to the drive shaft. The drive shaft attaches to a wheel and a tire that measures 2 and

asked by Caitlynn on September 13, 2016
90. ## Math

Help pls A number cube is rolled 450 times. The number 3 comes up 67 times. a. What is the theoretical probability of rolling a 3? Write your answer as a fraction in simplest form b. What is the experimental probability of rolling a 3? Write your answer as

asked by BlueJay-_- on May 21, 2018
91. ## physics

A square bar with a mass of 0.830 kg and 19.3cm long (l) rests on two parallel horizontal rails that are 18.0cm apart (d) and 120.0cm long (L) as shown in the figure. (By horizontal it is meant that the rails lie in a plane perpendicular to the local

asked by Trisha on February 20, 2015
92. ## science

A hot air balloon descends from a pressure of 380 mm Hg to 760 mm Hg and at the high altitude has a volume of 1,000 cubic meters. If the temperature starts at 50 degrees C and changes to 25 degrees C, the new volume will be: a. 100.0 x 50 x 760/25 x 380 b.

asked by pat on October 4, 2013
93. ## chemistry 106

Dry air near sea level has the following composition by volume: N2, 78.08 percent; O2, 20.94 percent; Ar, 0.93 percent; CO2, 0.05 percent. The atmospheric pressure is 1.00 atm. (Hint: Since volume is proportional to the number of moles present, mole

asked by Tanisha on March 1, 2010
94. ## Physics (BioPhysics)

You are bending your upper body forward, while your legs remain perfectly straight and their center of gravity remains over the back of your feet (see cartoon below). What is the maximum angle  you can lean forward by without tipping over? Assume that

asked by Phillip on February 15, 2015
95. ## math

If Swin uses tje equation S=25w+300 to figure out how much money she has in the bank, where w is the number of weeks since she opened the account. Which list shows the pattern of how muchmoney Swin could have starting from the time she opened the account?

asked by Anonymous on March 31, 2010
96. ## biology -nervous system

According to the book, "Surviving the Extremes" ch. High Altitude, explain the following: PS-its ok if you've never read it but aslong as you can answer the qeustions well. ok here there are: 1-Why is so much heat lost from, head, hands, feet? 2-Why would

asked by Sara on December 6, 2009
97. ## vocabulary

what does frustrastion mean? excuss my spelling. Frustration is the feeling that you get when you try to do something and can't. You may feel frustration when you can't figure out how to do a math problem. You may feel frustration when you're shooting

asked by sam on August 22, 2005
98. ## CHEMISTRY

One mole of H2O(g) at 1.00 atm and 100 degrees C occupies a volume of 30.6 L. When one mole of H2O(g) is condensed to one mole of H2O(l) at 1.00 atm and 100 degrees C, 40.66 kJ of heat is released. If the density of H2O(l) at this temperature and pressure

asked by Anonymous on July 14, 2010
99. ## Chemistry

A volatile liquid sample is placed in an Erlenmeyer flask that has been sealed except for a tiny hole that allows vapor to escape. Upon heating, the liquid is converted to vapor that fills the flask. Cooling the flask allows the vapor to condense back to

asked by Ceamus Angelina on May 8, 2018
100. ## economics

I really have to figure out the answers to these questions and i don't know where to start. I don't know how to draw the marginal benefit and marginal cost curves for this question. a.Sketch a marginal benefit and marginal cost diagram, with “billions of

asked by G on September 15, 2006