1. CHEMISTRY

    At 285mmHg +25 degrees celsius,a gas sample has a volume of 2270ml. what is the final pressure in mmHg at a volume of 1250ml and a temperature od 175 degrees celsius?

    asked by TERI on August 20, 2011
  2. Physics

    The density of a solid is 130gcm^-3 at the temperature of 25 degree Centrigate.Find the Density at 150 degree Celcius if the linear expansion of the solid is 2.0*10^(-5)K^-1. I got the answer to be 129.03.

    asked by Sirneij on April 14, 2015
  3. Physics

    The density of a solid is 130gcm^-3 at the temperature of 25 degree Centrigate.Find the Density at 150 degree Celcius if the linear expansion of the solid is 2.0*10^(-5)K^-1. I got the answer to be 129.03.

    asked by Sirneij on April 14, 2015
  4. Chemistry

    calculate the final temperature (once the ice has melted) of a mixture made up of initially of 75.0mL liquid water at 29 degrees Celsius and 7.0 g of ice at 0.0 degrees Celsius

    asked by Celine on February 23, 2010
  5. chemistry

    a balloon is filled with 15 L of an ideal gas of 20C. at this temperature the pressure of the gas is 1520 mm Hg. Suppose that the volume of the gas is reduced to 5 L at 290 K. what is the new pressure of the gas in atmospheres?

    asked by Katrina on December 4, 2014
  6. Science

    Which one of the following is incorrect at room temperature? a.Water is liquid at 1 atmosphere b.ozone is gas at 1 Atmosphere c.O4 EXISTS AT VERY HIGH PRESSURE d.CH4 IS LIQUID AT LOW PRESSURE

    asked by Ajai on November 3, 2012
  7. Chemistry

    a gas occupies 2 m3 at 100k and exerts a pressure of 100kpa. What volume will the gas occupy if the temperature is increased to 400.0k and the pressure is increased to 200.0kPa?

    asked by Tony on May 4, 2015
  8. chemistry

    SO2 and O2 are placed in a 2.00 L container at a temperature of 786 °C and a pressure of 6.99 atm. During the reaction, SO3 forms and the pressure falls to 1.89 atm. Determine how many moles of SO3 are generated.

    asked by leo on September 12, 2017
  9. Chemistry

    A sample gas has a volume of 200 cm^3 at 25 degrees celsius and 700 mmHg. If the pressure is reduced to 280 mmHg, what volume would the gas occupy at the same temperature?

    asked by B on April 4, 2011
  10. Chemistry

    What is the final temperature when 2.50 x 10^5 J are added to 0.950 kg of ice at 0.0 degrees C? The specific heat capacity of water is 4186 J/(kg·degrees C) and the latent heat of fusion for ice is 3.35×10^3 J/kg.

    asked by A on March 15, 2018
  11. Electrical Circuits

    A length of copper telephone line has a resistance of 24Ω at 20 degree Celsius. What it its resistance on a hot summer day when its temperature rises to 36 degree Celsius.

    asked by Anonymous on December 8, 2016
  12. statistics

    Assume that body temperatures of healthy adults are normally distributed with a mean of 98.2°F and a standard deviation of 0.62°F. Suppose we take a sample of eight healthy adults. What is the probability that their mean body temperature will be greater

    asked by ali awan on May 8, 2013
  13. chem

    A balloon occupies a volume of 352 cm3 at 615 Torr and 19 oC. If the pressure is changed to 410 Torr, what temperature must the gas in the balloon have to occupy the same volume?

    asked by mia on March 5, 2013
  14. chemistry

    Aluminum has a specific heat capacity of 0.903J/g degree celsius. What mass of aluminum in g would require 500j of heat to raise its temperature by 12.5 degrees celsius

    asked by mary on March 22, 2011
  15. Chemistry

    When 31 g of a metal at 88 ◦C is added to 46 g of water at 27 ◦C, the temperature of the water rises to 34 ◦C. What is the specific heat capacity of the metal? Assume no heat was lost to the surroundings. Answer in units of J / g ·◦C.

    asked by Amy on January 3, 2016
  16. Physics

    An aluminum spoon at 84 C is placed in a Styrofoam cup containing 0.180 kg of water at 12 C. If the final equilibrium temperature is 21 C and no heat is lost to the cup itself or the environment, what is the mass of the aluminum spoon?

    asked by Amy on May 7, 2011
  17. chemistry

    7750 Joules of energy is added to a 325 grams stone at 24.0 degrees centigrade. The temperature increases by 75.0 degrees centigrade. What is the specific heat of the stone?

    asked by basil on March 10, 2013
  18. chem

    At a certain temperature, the reaction CO(g) + 2H2(g) CH3OH(g) has Kc = 0.500. If a reaction mixture at equilibrium contains 0.00436 M CH3OH and 0.220 M H2, what is the equilibrium concentration of CO? The answer is 0.280 M. I don't know how to get it.

    asked by chris on April 27, 2011
  19. chemistry

    The temperature of a substance ____ as its heat of fusion is added to melt the substance A. increases B. decreases C. remains constant D. fluctuates from rapid increases and decreases

    asked by Emiko on September 14, 2014
  20. Physics

    A 5000-Hz car horn is blasted while the car is moving at 35.0 m/s toward a dazed physics student (stationary). What is the frequency of the horn heard by the student. Assume the temperature is 0°C

    asked by Sneha on March 13, 2016
  21. chemistry

    A high-altitude balloon contains 97.5 L of helium gas at 95.8 kPa. What is the volume when the balloon rises to an altitude where the pressure is only 21.5 kPa? (Assume that the temperature remains constant.)

    asked by lisa on March 2, 2011
  22. Science

    A reversible heat engine operates with an efficiency of 50%. If during each cycle it rejects 150 cal to a reservoir of heat at 30°C, then what is the temperature of the other reservoir and how much work does it carry out per cycle?

    asked by KK on January 5, 2019
  23. physics

    A 49-g bullet traveling at 290m/s penetrates a block of ice at 0∘C and comes to rest within the ice.Assuming that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the collision? The heat of fusion of water

    asked by Anonymous on June 4, 2014
  24. Chemistry

    At –11.0 °C (a common temperature for household freezers), what is the maximum mass of aspartame (C14H18N2O5) you can add to 1.50 kg of pure water and still have the solution freeze? Assume that aspartame is a molecular solid and does not ionize when it

    asked by Anon on January 29, 2013
  25. Science

    Table salt has a solubility of 36g of salt in 100g of water at 40 degrees celcius. If 15g of salt is added to 50g of water at the same room temperature, is the resulting solution saturated of unsaterated? Explain your answer.

    asked by Tornado_Demon on May 30, 2017
  26. physics

    A down jacket has a surface area of 0.82 m2 and is filled with a 3.8 cm thick layer of down, which has a thermal conductivity of 6.0 10-6 kcal/(s · m · C°). The coat is worn by a person whose skin temperature is maintained at 27° C. The outer surface

    asked by JOHN on April 9, 2012
  27. Chemistry

    Calculate the molar heat of neutralization in kJ/mol of the reaction between HA and BOH given the following information: The temperature change equals 8C, 50 mL of 1 M concentration of Acid 50 mL of 1 M concentration of Base Heat capacity of the

    asked by Melissa on November 20, 2011
  28. Physics

    An object of mass 7.0 kg falls through a height of 47.0 meters and, by means of a mechanical linkage, rotates a paddle wheel that stirs 0.670 kg of water. The water is initially at 5.5 deg C, What is the maximun possible temperature of the water? (Answer

    asked by Josh G, on March 21, 2008
  29. chemistry

    Calculate the molar heat of neutralization in kJ/mol of the reaction between HA and BOH given the following information: The temperature change equals 7C, 50 mL of 1 M concentration of Acid 50 mL of 1 M concentration of Base Heat capacity of the

    asked by Aaron on March 28, 2010
  30. College Chem

    If equal masses of O2 and N2 are placed in identical containers at the same temperature, which of the following statements is (are) true? a. both flasks contain the same number of molefules b. the pressure in the N2 flask is greater than in the other

    asked by Donna on March 28, 2010
  31. Physics

    You design an engine that takes in 1.5 x 10^4 J of heat at 650 K in each cycle and rejects heat at a temperature of 350 K. The engine completes 240 cycles in 1 minute. What is the theoretical maximum power output of your engine? can you please also show

    asked by Brianna on July 18, 2010
  32. Pys. Science

    Help......A 1.0kg metal head of a geology hammer stikes a solid rock withy a velocity of 5.0m/s. Assuming all the energy is retained by the hammer head, how much will its temperature increase? (C head= 0.11kcal/kgCdegrees) I don't comprehend any of this!

    asked by Staci on November 8, 2010
  33. physics

    An electric heater used to boil small amounts of water consists of a 25-Ω coil that is immersed directly in the water. It operates from a 60-V socket. How much time is required for this heater to raise the temperature of 0.50 kg of water from 29° C to

    asked by Dee on January 27, 2014
  34. Chemistry

    The normal boiling point of ethanol is 78.4°C. When 9.16 g of a soluble nonelectrolyte was dissolved in 100. g of ethanol, the vapor pressure of the solution at that temperature was 7.40 102 Torr. (a) What are the mole fractions of ethanol and solute? (b)

    asked by Daiyo on December 10, 2010
  35. Science

    Carla applied a force of 35 N to a wheelbarrow full of bricks and moved it 2.5 m. Which of the following can be determined from this information? The wheelbarrow supplied 87.5 J of work. The wheelbarrow has a mechanical advantage of 14. The wheelbarrow is

    asked by Science question, please don't give direct answer. on December 14, 2016
  36. Chemistry

    The ΔH per mole of CaCl2 is -81.0 kJ. Calculate the final temperature of an aqueous solution if 30 g of CaCl2 are added to 100 g of water at 23oC. Assume that the specific heat of the solution is the same as that of water

    asked by Felicia on October 7, 2010
  37. science

    If air at seal level with a temperature of 27C is forced up a mountain slope and the air's dew point at the condensation level is 14C at what elevation will condensation begin?

    asked by kayleigh on September 11, 2015
  38. Chemistry

    An aqueous CaCl_2 solution has a vapor pressure of 82.1mmHg at 50C. The vapor pressure of pure water at this temperature is 92.6mmHg. What is the concentration of CaCl_2 in mass percent?

    asked by melissa on January 20, 2010
  39. Chemistry

    Calculate the final temperature when 20.0 g at 60 *C iron is put into 50.0 ml of 20 *C water. The specific heat of iron is 0.449 J/g*C and that of water is 4.184*C. (Assume no heat is lost to the container or the surrounndings.)

    asked by Stacy on November 29, 2010
  40. chemistry

    350 calories of heat is added to a sample of nitrogen gas and the temperature is increased by 89 degrees Celsius. What is the mass of the nitrogen sample in cal/gram Celsius?

    asked by justmarla on August 30, 2012
  41. Lauren

    The specific heat of water is at 4.184J/g * degree C. How much heat is evolved, or absorbed, when the temperature of 9.00 mol of liquid water cools from 38 degrees C to 28 degrees C? How do I start this problem

    asked by Chemistry on November 16, 2007
  42. Math

    The basketball team scored 38,48,42, and 38 points in four games. What was the average points scored 41 Find the median of the data set 59 64 42 51 55 55 The noon temperature for last four days were 62 58 70 and 66. What was the range and mean range is 12

    asked by Jerald on April 2, 2013
  43. Physical Science

    A 144 kg park bench made of iron sits in the sun and its temperature increases from 25 degrees celsius to 35 degrees celsius. How many kilojoules of energy does the bench absorb?

    asked by Travis on September 14, 2015
  44. Chemistry

    A "neon" sign contains 2.4¡Ñ10^2mL of argon. Assuming that the gas is at standard temperature and pressure, there is 1.00 moles of gas per 22.4 L of volume. How many argon atoms are present in this sign?

    asked by Anonymous on June 5, 2013
  45. Chemistry

    Dicyclopentadiene was cracked by distillation to form cyclopentadiene. This is because cyclopentadiene is very reactive, so it can react with itself at room temperature in a Diels-alder reaction and reforms dicyclopentadiene (reversible reaction). is this

    asked by help on March 4, 2018
  46. CHEMISTRY 1C

    An equilibrium constant ... A. is small when the products are favored in the reaction. B. is calculated by dividing the concentration of the reactants by the concentration of the products. C. is the same, regardless of the initial concentrations of

    asked by WENDY on January 19, 2009
  47. Chemistry

    A gas-filled balloon having a volume of 3.50 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are −23°C and 3.00 10−3 atm, respectively. Calculate the final

    asked by Heath on March 12, 2010
  48. science

    A man throws over a cliff and hears it strike at the bottom in 8 second. The temperature is 25 C. what are the two times ; the time that the stone travels and the time that sound travels ? what is the height of the cliff in meters?

    asked by mohamed on November 25, 2015
  49. Chemistry

    A 1.55-g sample of propane, C3H8, was burned in a bomb calorimeter whose total heat capacity is 12.3 kJ/°C. The temperature of the calorimeter plus its contents increased from 21.36°C to 27.69°C. What is the heat of combustion per gram of propane?

    asked by Nisah on September 17, 2012
  50. science

    calculate the number of kilojoule necessary to raise the temperature of 60 gram of aluminium from 35 degree Celsius to 55 degree Celsius.Molar capacity of aluminium is 24 joule per mole per Kelvin?

    asked by Kausar on November 17, 2016
  51. chemistry

    how do u calculate the specific heat of a metallic element if 314 joules of heat energy are needed to raise the temperature of 50.0g sample from 25.0 degrees Celsius to 50.0 degrees Celsius?

    asked by gg on December 17, 2009
  52. Gem=neral Chemistry 106

    A gas occupying a volume of 806 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?

    asked by Reese on February 28, 2011
  53. Physics

    A 669 g sample of water at 83 degrees celsius is mixed with 486 g of water at 23 degrees celsius. What is the final temperature of the mixture? Assume no heat loss to the surroundings.

    asked by Maria on May 8, 2011
  54. chemistry

    A balloon has a volume of 2.75 liters at 25 degree celcus. What would the balloons volume be if the temperature is raised to 95 degree celcus and the pressure remains constant? please provide steps to get to answer

    asked by Tim on February 28, 2010
  55. chemistry

    An equilibrium constant ... A. is the same, regardless of the initial concentrations of reactants. B. is small when the products are favored in the reaction. C. is calculated by dividing the concentration of the reactants by the concentration of the

    asked by Wayland on April 10, 2008
  56. Physics

    Thermal energy question A 40.0kg sample of concrete has 10% zinc impurity (by mass). If 6.0x10^4J of thermal energy is added to the sample, determine the change in temperature.

    asked by Sandara on January 2, 2014
  57. science

    53.94 g of a substance of molecular mass 182 is dissolved in 1000g of water at this temperature.the vapour presser of water is 17.5 mmhg .calculate the vapour presser of this dilute solution

    asked by calculate the vapour presser of dilute solution on December 14, 2016
  58. Oceanography

    A 15.75-g piece of unknown metal absorbs 60 cal of heat energy, and its temperature changes form 25 degrees C to 175 degrees C. Calculate the specific heat capacity of this metal.

    asked by bj on September 28, 2011
  59. physics

    A 15.0-gal container is filled with gasoline. Neglect the change in volume of the container and find how many gallons are lost if the temperature increases by 31.9°F. The volume expansion coefficient of gasoline is 9.60·10-4°C-1

    asked by mustafa on November 3, 2014
  60. Chemistry

    A gas occupying a volume of 664 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?

    asked by Logan on May 7, 2013
  61. Physical chemistry

    At a certain temperature 0.1moles of hydrogen gas and 0.1 moles of iodine gas were placed in 1 litre flask. It was found that the concentration of iodine decreased to 0.02moles per litre. Calculate the value of the Kc for the reaction

    asked by Ashley on October 13, 2017
  62. Chemistry

    A gas occupying a volume of 664 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?

    asked by Logan on May 7, 2013
  63. physics

    A hot-water heater is operated by solar power. If the solar collector has an area of 5.8 m2 and the power delivered by sunlight is 550 W/m2, how long will it take to increase the temperature of 1.0 m3 of water from 24°C to 59°C?

    asked by halley on February 22, 2012
  64. chemistry

    a sample of water under study was found to boil at 102 degree Celsius at normal temperature and pressure. is the water pure ? will it freeze at 0 degree Celsius? comment ....

    asked by Anonymous on August 23, 2011
  65. chemistry

    Consider 4.00L of a gas at 365mmHg and 20*C. If the container is compressed to 2.80L and the temperature is increased to 35*C, what is the new pressure,P2 , inside the container? Assume no change in the amount of gas inside the cylinder

    asked by unknown on November 18, 2011
  66. science

    If air at sea level with a temperature of 27degrees C is forced up a mountain slope and the air's dew point at the condensation level is 14degrees C, at what elevation will condensation begin?

    asked by Jill on June 6, 2009
  67. physics

    The speed of a sound in a container of hydrogen at 201K is 1220m/s. What would be the speed of sound if the temperature were raised to 405K? Assume that hydrogen behaves like an ideal gas. Please guide me to do it. Thanks!

    asked by Bosco on March 3, 2008
  68. Algebra

    Write and solve an equation to find how much warmer Montana's average 3 month temperature is than Minnesotas. Montana weather is -0.7 degrees celsius and Minnesota is -2.5 degrees celsius

    asked by Gavin on September 22, 2015
  69. chemistry

    A 22.0 g piece of alloy at 264.8°C is dropped into a simple calorimeter that contains 175.0 g of water. The temperature of the calorimeter water increased from 20.4°C to 23.1°C. Calculate the specific heat capacity of the alloy.

    asked by Tyler on October 6, 2014
  70. Chemistry

    A candy sample is completely combusted in a bomb calorimeter. The calorimeter contains 982 g of water, and the measured temperature increase is 2.62°C. What is the fuel value of the candy sample in nutritional Calories?

    asked by Chemistry Chick on November 17, 2011
  71. Chemistry

    Two vessels are labeled A and B. Vessel A contains NH3 gas at 70°C, and vessel B contains Ne gas at the same temperature. If the average kinetic energy of NH3 is 7.1 10-21 J/molecule, calculate the mean-square speed of Ne atoms in m2/s2.

    asked by Niki on October 13, 2008
  72. Chemistry..

    Why does increasing the airflow over your face make you cooler? Why does getting your finger wet and then increasing the airflow result in an even cooler sensation? Why doesn’t the pen/pencil change temperature at all?

    asked by Anonymous on December 5, 2012
  73. Chemistry Honors

    At a particular temperature, 12.0 mol of NH3 is introduced into a 2.0 container, and the NH3 partially dissociates by the reaction: 2NH3 N2 + 3H2 At equilibrium, 6.0 mol of H2 gas are present. Calculate the K for this reaction.

    asked by Marie Genvieve on July 20, 2013
  74. Chem

    The price of gold is $625 per troy ounce at this writing. How much heat (in J) is needed to raise the temperature of $5000.00 worth of gold from 29.5 oC to 70.5 oC? (1 troy oz = 31.10 g and the specific heat of Au is 25.42 J/(moloC).) Please help!

    asked by Anonymous on October 17, 2012
  75. Chemistry

    25cm^3 of a gas containing only nitrogen and oxygen decomposed to form 25cm^3 of nitrogen and 50cm^3 of oxygen. All the volumes were measured at the same temperature and pressure. Write an equation for the reaction.

    asked by Cindy on October 13, 2013
  76. Chemistry

    The specific heat of water is 4.184J/gc and that of aluminum is 0.897J/gc which substance will show a larger increase in temperature upon the addition of 100J of heat to 100g the aluminum or the water

    asked by Kishwar on September 19, 2018
  77. chemistry

    A gas sample occupying a volume of 88.7 mL at a pressure of O.917 atm is allowed to expand at constant temperature until its pressure reaches 0.335 atm. what is its final volume?

    asked by Amanda on June 18, 2010
  78. Chemistry

    A sample of oxygen gas at 295 kPa takes up 456 L of space at standard temperature (the “T” in STP). What is the new volume when the pressure is lowered to standard pressure (the “P” in STP)?

    asked by Bianca on February 26, 2014
  79. chem

    i need help on this question: Equal masses of gaseous N2 and Ar are placed in separate flasks of equal volume at the same temperature. Tell whether each of the following statements is true or false. a) There are more molecules of N2 are present than atoms

    asked by hannah on February 10, 2011
  80. College Chemistry

    A 2.80 -g sample of an unknown chlorofluorocarbon is decomposed and produces 557mL of chlorine gas at a pressure of 750mm Hg and a temperature of 298K . What is the percent chlorine (by mass) in the unknown chlorofluorocarbon?

    asked by James on October 16, 2008
  81. chemistry..

    Why does increasing the airflow over your face make you cooler? Why does getting your finger wet and then increasing the airflow result in an even cooler sensation? Why doesn’t the pen/pencil change temperature at all? NEED HELP!

    asked by Anonymous on December 5, 2012
  82. physics

    Bottled water costs $0.55 for a 0.5 liter bottle. What would it cost to fill a bathtub with bottled water. The bathtub holds 7.13 cubic feet of water. (Recall that 1.00 inch = 2.54 cm, and that a liter is exactly 1000 cm3).

    asked by tyler on August 21, 2012
  83. Math

    You are buying a fence to enclose a garden that has an area of 360 square feet. x + 9 The bottom of garden x side of garden a) What is the width of the area to be enclosed? Answer in units of ft b) How much fencing do you need? Answer in units of ft

    asked by Shelby on January 28, 2015
  84. Physics

    A ball is dropped from 27.0 feet above the ground. Using energy considerations only, what is the velocity of the ball prior to it hitting the ground? If the ball is thrown back up to a ledge 15m above the groud, what would be the velocity as it reaches the

    asked by Hannah on February 25, 2012
  85. Math

    1. -24 • 5 =? A.-100*** B.-120 C.120 D.90 2. What is the product of -8 and -7? A.56 B.-56*** C.63 D.-63 3.Which of the following has a product of -40? A.(2)(20) B.(-4)(-10)*** C.(8)(-5) D.(-7)(60) 4.Which integer represents the total change in altitude

    asked by Connexus Academy can’t catch me! on September 26, 2018
  86. calculus

    Wiley jumps straight up in the air from the edge of a cliff so that when he comes down he falls off the cliff. The cliff is 40 feet off the ground. His height t seconds after he jumps is s= -16t2 + 12t + 40.What is the maximum height? What is his maximum

    asked by Martha on November 12, 2012
  87. calculus optimization problem

    A farmer has 460 feet of fencing with which to enclose a rectangular grazing pen next to a barn. The farmer will use the barn as one side of the pen, and will use the fencing for the other three sides. find the dimension of the pen with the maximum area?

    asked by lori on March 30, 2013
  88. Spanish

    Read the situation below, then fill in the blanks with the correct TENER expressions. 1. I was so busy I never had time for lunch. Yo___________________. 2. We won the lottery. Nosotros_________________.3.The air conditioning is broken and it 100F.

    asked by Phyllis on May 22, 2016
  89. Chemistry

    we burn 12.50L of ammonia in 20.00L of oxygen at 500 degrees celsius. What volume of nitric oxide, NO, gas can form? what volume of steam, H2O (g) is formed? Assume that all gases are at the same temperature and pressure, and that the limiting reactant is

    asked by Juan on May 6, 2013
  90. Science/Physics

    HOPE THIS IS BETTER John Loads A Collapsed Inflatable Boat Into A Two-wheel "grocery Type" Handcart and wheels it down the lake. (A) while the cart is being wheeled it is tipped at about a 45-degree angle (in other words, about halfway between horizontal

    asked by Jenny on March 4, 2009
  91. Science

    Two identical masses are moving down a slope. One mass is traveling twice as fast as the other mass. How does the kinetic energy of one mass compare to the other? (1 point) The faster object has the same kinetic energy as the slower object. The faster

    asked by Type Unknown on December 4, 2018
  92. Science

    PLEASE HELP!Two identical masses are moving down a slope. One mass is traveling twice as fast as the other mass. How does the kinetic energy of one mass compare to the other? (1 point) The faster object has the same kinetic energy as the slower object. The

    asked by alex on January 9, 2019
  93. MATH-HELP ASAP

    Joline collects hockey cards. She needs 5 cards to complete a set. This is 20 percent of the set. How many cards are in the set? and how do you figure this out ? please help:(

    asked by caitlin on June 15, 2010
  94. math --- check my work!

    1.Find the surface area for a sphere with a radius of 10 feet. Round to nearest whole number. 1,256 ft2*** 4,189 ft2 1,089 ft2 1,568 ft2 2.Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number. 1,257 ft3 4,187 ft3*** 1,089

    asked by TTR+S<3 on March 19, 2014
  95. Math

    The figure below are similar (their rectangles) find The value of x. Skinny rectangle has 2 on the top, and it has 4 on the side. Bigger rectangle it's side ways, it has 8 on the top and x on the side

    asked by Erica on April 4, 2016
  96. Chemistry

    If you have the q cal of a reaction, then obviously you can convert to q chem by negating your q cal. But what if you need to get to q rxn (q of the reaction)? Also, my textbook is claiming that the q rxn = -(q sol + q cal). How does that figure into this?

    asked by Fred on April 1, 2010
  97. math

    How does finding the square root [√] of a number compare to finding the cube root [little 3 on top √] of a number? Use the number 64 in your explanation. Please help me figure this out. I don't know what to do.

    asked by blue on October 21, 2014
  98. math

    Find the area of the following plane figure. An ellipse has a major axis of 14 cm and a minor axis of 10 cm. Find its area. Area (to the nearest tenth) =

    asked by C on July 5, 2016
  99. math

    Mary's birthday is between June 13 and June 23. The date of her birthday is not an even number. The sum of the digits is 3. When is Mary's birthday? explain how you figure the problem

    asked by Shonda on August 26, 2009
  100. physics

    have homework due soon, need help thanks. Two point charges are placed on the x axis.(Figure 1) The first charge, q1 = 8.00nC , is placed a distance 16.0m from the origin along the positive x axis; the second charge, q2 = 6.00nC , is placed a distance

    asked by jrfannin on February 4, 2014