1. chemistry

    What is the molar mass of an acid if 0.422 g of the acid are neutralized by 17.5 mL of 0.268 M NaOH?

    asked by sha on November 23, 2017
  2. general chem

    How much heat is released whena mass of 125 g with a specific heat of 4.11 J/g C increases from 23.2 C to 34.9 C?

    asked by Anonymous on March 13, 2011
  3. Chem 130

    What mass of CO2 could be absorbed by 1.37 g of CaO? What volume would this CO2 occupy at STP?

    asked by michelle on May 6, 2014
  4. Chemistry

    Acetone is a common solvent and has a density of 0.7899 g/mL. What volume of acetone has a mass of 28.7g

    asked by Jackie on January 20, 2017
  5. nyenyezi chrisian academy

    Caculate the mass of zinc chloride produced from 19.2tones of zinc oxide

    asked by edna on June 19, 2015
  6. Math,Word problems(algebra)

    Kai Ling has 4m kg of flour.She bought 2 more packets of flour, each of mass m kg.How much does she has now in terms of m? Please help me

    asked by kimi on September 23, 2011
  7. Physics

    How do I find Period T(s) and Period^2 T^2 (s^2) given mass(kg) = 0.1 and Average time for ten vibrations (s) = 5.05?

    asked by Annie on April 10, 2011
  8. Physical Science

    Find the density in g/cm3 of a 800 cm3 piece of metal having a mass of 4 kg.

    asked by Alex on September 5, 2012
  9. Science

    The density of pure silver is 10.5 g/cm3. What is the mass of a sample with the volume of 10.0 cm3?

    asked by Jewel on November 2, 2015
  10. Physics check

    In a nuclear reaction where energy is released, which has more mass, the products or the reactants? The reactants?

    asked by Emily on April 25, 2008
  11. Physics

    A boy has a mass of 45 kg and is running with a velocity of 8 m/s. Find the boy's kinetic energy.

    asked by angela on October 17, 2011
  12. science

    a chunk of lead has a volume of 45cm^3 and a mass of 510g. What is the density of lead.

    asked by zane on November 19, 2015
  13. chemistry

    A saturated solution of kno3 at 70°c is cooled to 10°c. What mass of a solid of precipitate out of solution.

    asked by Riana on December 19, 2012
  14. Physic

    If the specific gravity of ice is 0.92, what is the mass of one cubic meter of ice in grams?

    asked by Ty on March 15, 2012
  15. physics

    At a temperature of 0° C, the mass and volume of a fluid are 742 kg and 1.10 m3. The coefficient of volume expansion is 1.36 10-3(° C)−1

    asked by Anonymous on November 24, 2010
  16. Science

    What is the density of a cylinder if the cylinder is 3.5 cm long and 4cm in diameter and has a mass of 120 g

    asked by Alex on January 22, 2011
  17. physics

    a copper cylinder 1.50 m long and 40.0 cm in diameter stands on one end.what is the mass of the cylinder?

    asked by ---- on January 10, 2012
  18. physics

    an object accelerates at 0.8m/s2 when a resultant force of 200n is acting on it what is the mass of the object

    asked by james on November 13, 2012
  19. science

    when brought to the surface of the moon will a mass have more or less weight than it did on the surface of earth or stay the same ?

    asked by Blaire on October 8, 2010
  20. Science

    28cm3 of a gas weighs 0.4g at STP.Calculate the molecular mass of the gas.

    asked by David on January 17, 2017
  21. chemistry

    The vapour density of a gas is 22.4 and mass is. 22.4grams.what is the volume occupied the gas at N .T .P ?

    asked by nayan das on May 9, 2014
  22. Chemistry

    A lead fishing weight cotains 0.12 mol of lead atoms. What is its mass?

    asked by Denise on October 10, 2016
  23. physics

    The car has a mass of 1200kg Calculate the kinetic of the car when it travels at a speed of 12 m/s.

    asked by Dan on February 16, 2012
  24. chemistry

    What mass of iodine would react with 48 grams of magnesium to make magnesium iodide?

    asked by juliana on October 8, 2016
  25. Physics

    A plane with a mass of 4.50 x 10^3 kg accelerates on takeoff at 10.0 m/s2. What is the net force acting on the plane?

    asked by Sarah on May 9, 2017
  26. Physics

    An elastic cord vibrates with a frequency of 2.7 Hz when a mass of 0.56 kg is hung from it. What will its frequency be if only 0.43 kg hangs from it?

    asked by Anonymous on January 27, 2010
  27. Chemistry

    A serving of Doritos has 17 g of carbohydrates. What is this mass in units of ounces? (16 ounces = 453.6 g)

    asked by Ryane on September 19, 2017
  28. chemistry

    Water has a density of 0.997 g/mL at room temperature (25 C). If you have exactly 500 mL of water, what is its mass in kg?

    asked by bobby on May 4, 2015
  29. Chemistry

    What is the mole fraction of ethanol, C2H5OH, in an aqueous solution that is 50.0% ethanol by mass?

    asked by Devon on August 22, 2016
  30. Science

    By what factor would your weight change if the earth's diameter were doubled and its mass were also doubled? Thanks :)

    asked by Catherine on May 14, 2011
  31. Chem 1510

    A urine sample has a mass of 157 g and a density of 1.030 g/mL. What is the volume of this sample?

    asked by Anonymous on January 16, 2014
  32. chemistry

    100 mL of water is already in the calorimeter. Use the density of water at 25°C (0.998 g/mL) to determine the mass

    asked by marty on June 27, 2011
  33. Chemistry

    How do I find the volume in L, of aluminum if the mass is 25.25g and the density of aluminum is 2.70g/Ml?

    asked by Patty on February 6, 2011
  34. Physics

    a soccer ball kicked with a force of 14.1 N accelerates at 6.8 m/s^2 to the right. What is the mass of the ball? in units of Kg.

    asked by Nancy on November 19, 2010
  35. Chem 1510

    A urine sample has a mass of 157 g and a density of 1.030 g/mL. What is the volume of this sample?

    asked by Anonymous on January 16, 2014
  36. Chemistry

    the density of Fe2O3 is 5.343g cc. What is the mass volume concentration of iron in Fe2O3

    asked by jay on October 16, 2013
  37. Physics

    A car that slows down uniformly from 20 m/s to 5 m/s has an impulse of 30,000 kg m/s. Determine the mass of the car

    asked by Jut on March 6, 2015
  38. chemistry121

    What mass of silver chloride can be produced from 1.25 L of a 0.264 M solution of silver nitrate?

    asked by graciela on October 19, 2011
  39. Intro to Chemistry

    How do you determine the mass of NACL needed to prepare 25.00 ml of a 1.585M NaCl Solution?

    asked by Jenny on November 19, 2012
  40. chem

    density of 20% by mass C2H6O2 solution in water is 1.03 g/mL. find the molarity of the solution.

    asked by lily on July 21, 2011
  41. Chemistry

    what's the density of a cube of an unknown substance if mass is 45.2g and the side of a cube is 3.2cm?

    asked by Nick on October 24, 2013
  42. math

    the mas of a boulder is 48,567 kilograms . what is the mass of the boulder in metric tons?

    asked by on February 5, 2019
  43. chemistry

    what will be the mass of angydrous Alum left over if one starts with 100.00 g of hydrated Alum?

    asked by Jay on October 21, 2010
  44. physics

    How far from the center of the Earth must a 90 kg astronaut be in order for them to weigh 90 N? The mass of the Earth is 6 x 1024 kg.

    asked by Anonymous on March 10, 2013
  45. physics

    if a person is pushing a cart with a force of 40 Newtons and it accelerates at 0.5 m/s2 , what is the mass of the cart ?

    asked by ariel on April 13, 2012
  46. physics

    How far from the center of the Earth must a 90 kg astronaut be in order for them to weigh 90 N? The mass of the Earth is 6 x 1024 kg.

    asked by Anonymous on March 10, 2013
  47. Physics

    A spring vibrates at 8Hz,when a mass of 0.82kg is hung from it.What is the spring constant?

    asked by Pius on April 25, 2012
  48. physical science

    If the mass of a plane is 2,500 kg and the net force on it is 14,000 N, what is the plane's acceleration?

    asked by Annabeth on May 14, 2013
  49. Physics

    1) what does the y intercept on a force vs acceleration graph represent? 2)what is the relationship of mass and acceleration?

    asked by Aly on October 30, 2013
  50. Physics 20

    A plane with a mass of 4.50 x 10^3 kg accelerates on takeoff at 10.0 m/s2. What is the net force acting on the plane?

    asked by Cassandra on May 5, 2017
  51. chemistry

    What is the molality of 67.1g of Nano3 in 2.5l of water i get the molar mass of nano3 and divide it by the 67.1g and multipy it by 2.5l

    asked by dd on December 12, 2014
  52. chemistry 2 college

    explain how to find the mass of solute in the solution: 50.0g of solvent in a 10.0% NaCl solution?

    asked by deedee on March 24, 2013
  53. Chem 1510

    A urine sample has a mass of 157 g and a density of 1.030 g/mL. What is the volume of this sample?

    asked by Anonymous on January 16, 2014
  54. Phystcs

    How does the force between two objects change when the mass of one object and distance between the two object are doubled.

    asked by Anupam khatiwara on August 1, 2012
  55. chemistry

    what is the percent by mass of NaHCO3, in a solution containing 20 g NaHCO3 dissolved in 600 mL H20

    asked by rocky on July 14, 2011
  56. urgent (physics)

    A certain planet is located 3.54 x 10^11 m from its sun. If its orbital period is 4.9 x 10^7 s, find the mass of its sun.

    asked by HELP PLEASE on April 24, 2014
  57. chemistry.

    The molecular of aspartame, the generic name of Nutrasweet, is C14H18O5. The molar mass of aspartame is?

    asked by Jimmy on September 25, 2009
  58. Physics 1

    Two small particles of mass 16 kg and 27 kg are a distance 1.4 m apart. What is the gravitational force of one of these particles on the other?_____N

    asked by John on October 3, 2012
  59. Physics

    A mass of .27 kg is attached to a spring and is set into vibration with a period of .39s.what is the spring?

    asked by Emily on March 24, 2012
  60. science

    A force of 20 n gives a ball an acceleration of 4.0 m/s3 on a lever frictionless surface. what is the mass of the ball?

    asked by Joey on June 17, 2014
  61. physics

    how much work (J) is done by friction when the mass is 150 kg and dragged for 10 m if the coefficient of sliding friction is .3?

    asked by Jamie on February 4, 2013
  62. Astronomy

    What do you need to know in order to calculate the mass of a planet from observations of a satellite in orbit around that planet?

    asked by Frances on October 2, 2011
  63. chem

    seawater contains approximately 3.5% NaCl by mass and has a density of 1.02 g/mL. What volume of seawater contains 1.0 g of sodium?

    asked by Anonymous on February 27, 2011
  64. Chemistry

    Calculate the mole fraction of Benzene in a solution containing 30% by mass of Benzene in CCl4?

    asked by Gash on March 2, 2019
  65. Chemistry

    An alloy contains 39.5 mass% silver (Ag) and has density og 7.86 g/ml What volume of alloy would be needed to contain 12.0g of pure Ag?

    asked by Chad on April 20, 2013
  66. science

    When determining the mass of an atom, the electrons are not considered. Why can scientists disregard the electrons?

    asked by me on February 4, 2009
  67. Physics that you probably know and i don't

    The tension in the above string is 89.6 N. Calculate the mass of a 4 m long piece of the steel string.

    asked by College student in need of help on March 31, 2011
  68. chemistry

    Calculate the mass of solute of hydrogen peroxide in a 35% solution if 450 ml of solution is being used

    asked by Emmee on February 22, 2012
  69. science

    Gravitational force =mass x 9.8m/s2 what is the force of a polar bear weighing 1500kg?

    asked by amanda on December 5, 2016
  70. chamistry

    how do you calculate the mole fraction of HCl in an acqueous solution that contains 33.6% HCl by mass?

    asked by franco on February 23, 2011
  71. science (physics)

    A 980 N box has a mass of 100 kg. What is the acceleration of the box due to gravity?

    asked by meme on January 24, 2013
  72. Physics

    A certain planet is located 3.54 x 10^11 m from its sun. If its orbital period is 4.9 x 10^7 s, find the mass of its sun.

    asked by stewart on April 24, 2014
  73. Scienc

    World poplation grow each year,does this mean the mass off earth increases each year? Why?

    asked by Nazharia Zehr on October 25, 2007
  74. Physics

    the sun's mass is 1.99*10^30 kg and it has a radius of 6.96*10^8 m.What is the Sun's gravitational field strength at its surface.

    asked by Anonymous on October 26, 2009
  75. Chemistry

    What mass of N2O5 will result from the reaction of 6.0 mol of NO2 if there is a 61.2% yield in the reaction?

    asked by Brya on May 27, 2013
  76. physics

    Forces of 8.85 N and 2.21 N act at right angles on a stack. What is the mass of the stack if it accelerates at a rate of 4.4 m/s^2?

    asked by i need help on October 8, 2013
  77. chemistry

    80.0 g of iodine (v) oxide reacts with 28.0 g of carbon monoxide determine the mass of iodine

    asked by Anonymous on April 12, 2010
  78. physics

    Suppose I have a spring. I add a mass (m = 1.0 kg) and it is displaced by 15 cm. What is the spring constant k in units of (N/m)?

    asked by tiffany on November 18, 2010
  79. Chemistry

    Hg + I2 -> HgI2 Whats the mass of HgI2 if you have 0.7236g mercury and 0.3264g iodine?

    asked by Anonymous on February 6, 2013
  80. chemistry

    80.0 g of iodine (v) oxide reacts with 28.0 g of carbon monoxide determine the mass of iodine

    asked by Anonymous on April 12, 2010
  81. Physics

    the sun's mass is 1.99*10^30 kg and it has a radius of 6.96*10^8 m.What is the Sun's gravitational field strength at its surface.

    asked by Anonymous on October 26, 2009
  82. chemistry

    A 2.3g sample of MgX is reacted with NaOH. The Mg(OH)2 precipitate had a mass of 1.8g. What is the % of Mg in the original sample?

    asked by corey on October 15, 2007
  83. Physics

    The acceleration due to gravity on Earth is 9.80 m/s2. If the mass of a dog is 40.0 kg, what is the weight of the dog?

    asked by Jane on April 18, 2014
  84. physics

    A spring extends 10 cm whena mass of 100g is attached to it, when is the spring constant

    asked by boikobo on July 7, 2016
  85. science

    what must be the density of an object with a mass of 5000 grams if the object is to float in water?

    asked by John on January 25, 2010
  86. Physics

    Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons.

    asked by Anonymous on January 31, 2013
  87. Physics

    A certain planet is located 3.54 x 10^11 m from its sun. If its orbital period is 4.9 x 10^7 s, find the mass of its sun.

    asked by Anonymous on April 24, 2014
  88. Physics

    Two planets of mass 7 x 10^25 kg are release from rest 2.5 x 10^12 m apart. What is the speed of the planets when they are half this distance apart?

    asked by Anonymous on August 4, 2015
  89. chemistry

    air has an average molar mass of 29.o g/mol. The density of air at 0.97 atm and 30. C is

    asked by lnkin on December 12, 2011
  90. science

    an unknown metal has a volume of 20cm^3 and a mass of 54g. Identify the metal

    asked by Matthew on April 11, 2010
  91. science

    Which has more mass and volume, a cup of popped popcorn or a cup of cooked rice?

    asked by Darion on May 5, 2009
  92. Chemistry

    2 NO + 2 SO2 → 1 N2 + 2 SO3 Determine the mass (in g) of N2 that would be produced when 5.28×10-3 g of SO2 reacts with an excess of NO.

    asked by Mackenzie on October 25, 2015
  93. physic

    The acceleration due to gravity on the moon is 1.6/se. What does a 10kg mass weigh on the moon?

    asked by monquie on February 2, 2016
  94. science

    A cube has each edge equal to 2cm.Mass of cube is 20.8 g.what is its volume and density

    asked by manminder on May 31, 2017
  95. physics

    a 0.20 kg mass is attached to the end of a spring causes it to stretch 3cm. what is the spring constant?

    asked by Anonymous on June 5, 2012
  96. Chemistry

    10.7L of a gas at 1.75 atm are expanded to 20.0L at a mass constant temperature.what the new gas pressure?

    asked by Margaret on October 8, 2013
  97. Chemistry

    10.7L of a gas at 1.75 atm are expanded to 20.0L at a mass constant temperature.what the new gas pressure?

    asked by Margaret on October 8, 2013
  98. Chemistry

    10.7L of a gas at 1.75 atm are expanded to 20.0L at a mass constant temperature.what the new gas pressure?

    asked by Margaret on October 8, 2013
  99. Chemistry conversions check

    I'm sooooooo not sure if I'm doing this right, but can someone check it please? Thanks :)) 5) Determine the mass in grams of 3.01 x 10^23 atoms of Cl (element) I got 17.5 grams...is this right?

    asked by Emily on September 10, 2009
  100. science

    how do i calculate the mols of sulfuric acid ? mols = grams/molar mass

    asked by Deon on February 7, 2007

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