1. Chemistry

    what mass of water at 15C can be cooled 1C by heat necessary to melt 185g of ice at 0C

    asked by Brian on February 4, 2011
  2. chemistry

    how to find mass of aspirin if I used 0.2845g of the powder with 1mL of 6.0 mol/L of NaOH?

    asked by linda on April 23, 2015
  3. Chemistry

    Would the molar mass become high or low if the hole in aluminum foil was quite large?

    asked by Linda on April 6, 2011
  4. Sicience

    Calculate the density of a liquid that has a mass of 20g and a volume of 315.4ml

    asked by Cat on September 13, 2015
  5. chemistry

    Calculate the mass of carbon dioxide produced by burning 0.60kg of methane

    asked by Luc on November 7, 2011
  6. Chemistry

    What mass of carbon dioxide is formed by the complete combustion of 760 g of ethanol?

    asked by Jay on November 6, 2016
  7. chemistry

    What mass of water, in grams, would have to be decomposed to produce 28.7 L of molecular oxygen at STP?

    asked by Lisa on December 20, 2010
  8. Science

    Your thermodynamics calculation involves mass and a change in temperature. What SI base units would you use?

    asked by Gianna on September 27, 2013
  9. physics

    if an object has a mass of 615grams and a volume of 150cm3 is the density 5.86g/cm3

    asked by cassie on April 13, 2010
  10. science

    Will a plastic block that has sides that measure 9 cm and its mass is 19.2 grams float on water?

    asked by eric on January 17, 2013
  11. Chemistry

    When 13.0 grams of acetylene, C2H2, is reacted, what mass of water, H2O, is produced?

    asked by Joe on October 18, 2016
  12. physical science

    Determine the molar mass of the following elements: a. manganese, Mn c. arsenic, As b. cadmium, Cd d. strontium, Sr

    asked by Jameisha on December 4, 2008
  13. Chemistry

    What is the density, in grams per milliliter, of a salt solution if 210 mL has a mass of 234 g?

    asked by Gili on October 31, 2014
  14. physics

    two masses are in the ratio 1:2 are thrown vertically up with the same speed . what is the effect on time by the mass?

    asked by sar on September 17, 2012
  15. Physics

    The maximum kinetic energy of a mass-spring system in SHM is equal to

    asked by Spaceman on April 29, 2014
  16. science

    based on the relationship between mass and volume.... How much space would 75 grams of water occupy?

    asked by jake on January 6, 2011
  17. chemistry

    calculate the percent by mass of solute in solution that contains 3.85 g of calcium chloride in 78.5g of water

    asked by Anonymous on February 21, 2013
  18. physics

    determine the speed of a mass (1.00kg) after it has fallen a vertical distance of 12.5 meters

    asked by alex on February 22, 2011
  19. science

    Calculate net force when mass =2000kg, uniform velocity =60kg/hr

    asked by karan on November 7, 2015
  20. Physics

    Ok why would it be necessary for someone to measure oscillations from a 20 cm mark of a suspended ruler as oppose to the center of mass?

    asked by Kimora on December 15, 2008
  21. mass media

    who determines what will be printed and how access to information limited with mass production of books?

    asked by Anonymous on May 29, 2008
  22. Physics, Help!! URGENT!!!

    A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?

    asked by Grant on October 5, 2014
  23. phy113

    What mass of ice is needed to cool 60g of water from 43oC to 20oC

    asked by sam on March 26, 2014
  24. chemistry

    calculate the mass of CO2 obtained when HCL reacts with 15g CACO3.

    asked by Shiy on April 1, 2011
  25. Chemistry

    Express each quantity as a mass in grams. a) 3.70mol of H2O b) 8.43 x 10^23 molecules of PbO2

    asked by Marty on October 20, 2007
  26. science

    A atom of iron(mass 10-25 kg) travels at a speed between 20.0 and 20.1 m/s. How accurately can we determine its position?

    asked by Trent on November 9, 2009
  27. physics

    what is the effective weight of a person of mass 60kg carried vertically up in a rocket with an

    asked by pawan kumar on March 25, 2016
  28. chemistry

    How many cubic centimeters (cm3{\rm cm}^3) of olive oil have the same mass as 2.00LL of gasoline?

    asked by Keni on January 30, 2014
  29. Chemistry

    What mass, in grams, of sodium chloride is needed to prepare 15.0 ml of 10% (m/v) NaCl solution?

    asked by Irene on November 2, 2016
  30. Chemistry

    calculate the percent composition, by mass, of carbon in Na2CO3. please explain how you get the answer.

    asked by denise on January 2, 2011
  31. Physics

    What is the angular momentum (in J*s) of a mass of 1.45 kg which completes an orbit about a point 23.0 meters away every 5.30 seconds.

    asked by Steeve on November 1, 2012
  32. Chemisty

    8g of hydrogen is burnt in the presence of excess oxygen.the mass of water formed is?

    asked by Mo on September 26, 2016
  33. science

    If and iron block had a lenght of 2 cm, a width of 3 cm, and a height of 1 cm and a mass of 33 g between what two liquids would it float?

    asked by Anonymous on April 21, 2014
  34. chemistry

    if the molar mass of BaCl2 is 208.3 g/mol, how many grams are present in 0.25 moles?

    asked by sam on March 19, 2013
  35. Physics

    The body mass is 0.4kg , its hung on a spring with stiffness of 90 N/m What is the frequency of its oscillation?

    asked by Naela on June 13, 2018
  36. physics

    What is the potential energy of a bear with the mass of 200 kg in 20 meter altitude of a mountain?

    asked by Anonymous on December 5, 2012
  37. physics

    Why is it better to put ince rather than an equal mass of cold water into a drink you want to chill?

    asked by Anonymous on December 4, 2008
  38. Chemistry

    What is the solubility of X in mol/dm3 if 25cm3 of its saturated solution contains 4.0g of X (Molar mass of X=60)

    asked by Toyety on March 21, 2016
  39. CHEMISTRY

    What mass of NaCl is required to precipitate all the Ag ions from 20 mL of .100 M AgNO3 solution

    asked by CIndy on April 22, 2013
  40. chem 110

    if a 72g.ofHCL( molar mass=36g./mol) is in 200-ml what is the molarity

    asked by bianca on December 20, 2011
  41. Chemisty

    What mass of carbon dioxide is formed by the complete combustion of 885g of methanol?

    asked by Shatoya on November 9, 2014
  42. Physics

    a man having a mass of 60 kg exerts a horizontal force of 200 newton in pushing

    asked by Manahil Memon on October 25, 2018
  43. chemistry 113

    What is the molar mass of iron(II) chloride tetrahydrate? The error interval is +/- 2 g/mol.

    asked by ALEX GOLD on January 24, 2015
  44. science

    If mass M explore into three pieces two of equal to M/4 move perpendicular to each other with 3m/s 4m/s determined velocity of third

    asked by xasshi on March 22, 2016
  45. Chemistry

    How would you prepare 455 g of aqueous solution that is 6.50% sodium sulfate Na2SO4 by mass?

    asked by Lauren on February 4, 2008
  46. physics

    What is the force a rock exerts if it's mass is 36,000 kg and the acceleration due to Gravity is 9.8 m/s2

    asked by Anonymous on February 23, 2015
  47. Chemistry

    Zinc - .5 grams HCl- .2 moles Find the Mass of ZnCl2 [How would you solve this?]

    asked by Derrick on November 19, 2015
  48. tsu

    what mass of aluminum must be used to produce 42.56 g of iron? fe2o3(s) + 2al(s) → 2fe(l) + al2o3(s)

    asked by pppp on March 31, 2015
  49. physics

    What is the kinetic energy of a car of mass 1900 kg moving at a constant speed of 21 m/s

    asked by gina on September 19, 2011
  50. chemistry

    3.49g of ammonia at STP weighs 4.48litre calculate molecular mass of it.

    asked by Anonymous on November 28, 2010
  51. Chemistry

    Find the mass of carbon dioxide that can be produced from 0.01 mols of calcium carbonate

    asked by D.M.I st EUGENE UNIVERSITY on February 9, 2014
  52. physics

    Your friend of mass 80 kg can just barely float in freshwater.Calculate her approximate volume.

    asked by Kristie on March 27, 2012
  53. Chemistry

    Calculate the mass in grams of 0.0086 mol of xenon (show the steps please)

    asked by Anonymous on November 6, 2013
  54. Physics

    what is the mass of the toy truck if the force of friction holding it in place is 18.5N u= 0.2 at 30 degrees

    asked by mouzam on March 12, 2015
  55. physics

    if a bowling ball with a 22 cm diameter is half way submerged in a bucket of water, what is its mass?

    asked by alaina on July 12, 2011
  56. math

    Michael estimated his mass as 8 kilograms. Is his estimate reasonable? Justify your answer. Please help me thanks.

    asked by Mandy on November 24, 2015
  57. physical science

    compute the density in g/cm of a piece of metal that has a mass of 0.520kg and a volume of 75cm

    asked by arpa on January 24, 2008
  58. molarity

    what mass of sodium hydroxide, NaOH, must be dissolved to make 460 ml of a 1.10 M solution

    asked by erica on February 27, 2008
  59. chemistry

    What mass of natural gas CH_4 must you burn to emit 259 kJ of heat?

    asked by Mely on October 18, 2010
  60. calculus

    Find the center of mass of the region bounded by the curve y = x3 - 4x2 +3x ; the x-axis ; x = 0 ; x = 1

    asked by Trisha on December 1, 2011
  61. Chemistry stoch1

    Calculate mass of iron, which will be converted into (Fe3O4) by the action of 18g of steam on it.

    asked by Aman on September 21, 2013
  62. chemistry

    calculate the mass in kilograms of 3.99 liters of acetic acid. the density if 1.05g/ml.

    asked by Anonymous on February 20, 2012
  63. chemistry

    What mass of AgCl will be obtained by adding an excess of HCl to a solution of 0.34 g of AgNO3 ?

    asked by Joyeeta on December 18, 2014
  64. 8th Grade Physical Science

    Calculate the density of a sample of gas with a mass of 30 g and volume of 7500 cm3.

    asked by kirt on October 1, 2013
  65. Physics

    The body mass is 0.4kg , its hung on a spring with stiffness of 90 N/m What is the frequency of its oscillation?

    asked by Naela on June 13, 2018
  66. Physics

    Calculate the force acting on a body of mass 10 kg moving with a uniform velocity of 2m/s.

    asked by Abidur on April 9, 2017
  67. chemistry

    The bottle of hydrogen peroxide from the store says it is a 3% solution by mass. What is its molal concentration?

    asked by billy bob j on April 17, 2008
  68. Physics (Force)

    A power wheelbarrow has a mass of 432 kg. What force must be applied to give it an acceleration of 1.75 m/s2?

    asked by Justin on September 30, 2014
  69. Physics

    A block of mass 8.1 kg is pulled to the right by an applied force of 76.2 N. If the acceleration is 0.84 m/s^2, how much friction must be present?

    asked by Breauna on December 17, 2014
  70. math

    how doyou calculate mass The problem begs for details: Are you working with density?

    asked by tamika on August 29, 2006
  71. dulaney hi

    what is the maxium mass of chlorine that could be released in the stratosphere by 100g of ech compound

    asked by toni on March 14, 2010
  72. chemistry

    25g of NaCl is deissolved in 100g of water. what is the concentration in percentage by mass?

    asked by Riana on January 29, 2013
  73. Chemistry

    What mass of potassium nitrate would you have in order to produce 1.00dm of oxygen at rtp?

    asked by Neisha on May 14, 2017
  74. chemistry

    If 22.4 dm3 of steam react with MgO, calculate the mass of the product that will form.

    asked by Chelsea on February 18, 2013
  75. Chemistry

    I forgot to weigh the mass of filter paper and CaC2O4 before oven drying it. What do i do?

    asked by Siya on March 12, 2015
  76. physics

    --------------------------------------- A rugby player of mass 82kg is running at 6.0m/s. How much energy will be needed to stop him? ---------------------------------------

    asked by XxKineticxX on March 29, 2011
  77. Astronomy

    What is the estimated total lifetime for a star with mass 0.7 Msun ? (in billions of year)

    asked by qwerty on March 4, 2014
  78. physics

    Two masses are hanging over a frictionless, massless pulley as shown blocks_pulley_aMass m1 is 5.0 kg and mass m2 is 7.0 kg

    asked by bill on June 19, 2010
  79. science

    if the actual mass of oxide at the end of the experiment is 130g, what is percentage yield?

    asked by Mahlako on May 17, 2015
  80. chem

    calculate the mass in grams of oxygen atoms in 0.25 mol fluoroacetic acid

    asked by lisa on March 28, 2012
  81. Chemistry

    What mass of the following solution contains 0.100 mol of solute? 0.334 molality NH4NO3

    asked by Anonymous on April 24, 2011
  82. physics

    What is the speed of a transverse wave in a rope of length 1.90 m and mass 65.0 g under a tension of 465 N?

    asked by Vio on March 24, 2016
  83. science

    calculate the mass of 120 cc of nitrogen at NTP. How many number of molecules are present in it?

    asked by sandy on August 10, 2016
  84. math

    the mass of a grain of sand is 8.7*10^-8 write the nurmeral in secentence in standard form.

    asked by Winston on November 14, 2014
  85. Chemistry

    200. g of a solvent is available, how many grams of a solute should be weighed out to make a 15.0% solution by mass?

    asked by CC on February 10, 2010
  86. Chemistry

    If 15gram of potassium trioxochlorate V is heate in MnO2.What is the mass of chloride produce

    asked by Samuel Wolobah on March 6, 2013
  87. Science

    I am working with a graph and if at every 5.6 km you cut in half the atmospheric mass. So at 16.8 km wouldn't you have 12.5% of the atmosphere above and 87.5% would be below?

    asked by Cathy on February 23, 2009
  88. Chemistry

    Calculate the mass of the precipitate formed when 2.27 L of 0.0820 M Ba(OH)2 are mixed with 3.06 L of 0.0664 M Na2SO4.

    asked by David on August 13, 2016
  89. chemistry

    KCl What is the molar mass (to the nearest tenth of a gram/mole) of each of the following 39.1 g/m + 35.5 g/m = 74.6 g/mol

    asked by Shine bright shine far on February 25, 2019
  90. physics

    A hockey puck has no friction on it. It has a mass of 0.28 kg and experiences a force of 48 newtons. What is its acceleration?

    asked by Anonymous on February 1, 2012
  91. CHEMISTRYYY

    What mass of PCl3 forms in the reaction of 70.6 g P4 with 268 g Cl2 ? P4 + 6Cl2 → 4PCl3

    asked by Chelsea on February 6, 2015
  92. gpc

    Calculate the molarity of a bleach solution that is 8% by mass (m/v) or 8g/100mL sodium hypochlorite.

    asked by samry on March 3, 2014
  93. physics

    a truck moving at 100kph has a mass of 27000 kg. what force is necessary decelerate it at rate of -3 m/s²?

    asked by enjen on May 7, 2016
  94. BIOLOGY

    What is the majority of the mass of the heart composed of? a. Endocardium b. Myocardium c. Pericardium d. Endothelium

    asked by sarah on January 26, 2013
  95. science

    calculate the net force on an object that has a mass of 12kg and acceleration of 4m/sec

    asked by Veronica on March 13, 2015
  96. Chemestry

    determine the volume of a sample of plastic if the mass is 3.00g and the density is 1.24g/cm^3

    asked by Ashlee on December 2, 2014
  97. Physics

    What Net Force is necessary to give a 2.0 kg mass initially at rest an acceleration of 5.0 m/s^2? Is the answer 10. N?

    asked by Dan on March 9, 2009
  98. chemistry

    Determine the mass of copper that has the same number of atoms as there are in 15.46 mg of gold. Answer in units of mg.

    asked by Quinton on November 16, 2015
  99. Science

    if an aluminum cube has a mass of 20g and the length of each side was 2 cm, between what two liquids would it float?

    asked by Anonymous on September 27, 2012
  100. Chemistry

    What mass of NaOH is required to create 500 mL of a .4 M solution of Sodium Hydroxide(aq)?

    asked by Scott on February 13, 2014

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