Bret

Newest questions and responses by Bret
  1. advanced algebra 2

    (5y^4-23y^3+24y^2-7)/(y-3)

    asked on January 21, 2018
  2. Enthalpy (chemistry 105)

    23.0mL of water density of water is 1.00 g/mL 1g = 1ml 23g of water Cs of water 4.18 J/(gC) moles= 2.40g/72.0(g/mol)= .033 mass = 23g+2.4g = 25.4g Ti= 14.5 C Tf= 25.0 C Calculate the enthalpy change, ΔH, for this reaction per mole of X. I'm getting -33.4

    asked on October 29, 2017
  3. geometry

    given: segment HI congruent to segment GJ, segment HI parallel to segment GJ prove: triangle GJH congruent to triangle IHJ

    asked on November 17, 2016
  4. geometry

    if m

    asked on August 31, 2016
  5. algebra

    what two numbers add up to 4 and multiply to 6?

    asked on May 5, 2016
  6. math

    what is another way to equal 40 and i already have 10•4•1, 20•2•1,5•4•3,40•1•1,10•2•2?

    asked on April 2, 2015
  7. math

    find the unit rate and use it to write an equation relating the two quantities? 62 dollars to rent 14 video games 62/14?

    asked on February 19, 2015
  8. Physics

    An athlete whirls a 7.36 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.07 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the length given for the chain.

    asked on January 28, 2013
  9. Physics

    How much power does a water pump exert lifting 30 kg of water at a constant velocity 20 m each second

    asked on February 19, 2012
  10. Physic

    A 89.0 kg person stands on one leg and 90% of the weight is supported by the upper leg connecting the knee and hip joint-the femur. Assuming the femur is 0.640 m long and has a radius of 1.90 cm, by how much is the bone compressed?

    asked on May 8, 2011
  11. Physic

    The spout heights in the container in the figure are 15 cm, 30 cm, 45 cm, and 60 cm. The water level is maintained at a 68 cm height by an outside supply. What is the speed of the water out of the 15 cm high hole? What is the speed of the water out of the

    asked on May 8, 2011
  12. math

    consider a state lottery that has a weekly television show. on this show, a contestant receives the opportunity to win $1 million dollars. the contestant picks from 4 hidden windows. behind each window is one of the following: $150,000, $200,000, $1

    asked on October 23, 2008
  13. chemistry

    Posted by Bret on Friday, March 16, 2007 at 10:44am. what is the oxidation number for nitrogen in the following? NH3 NO2 1- N2 NO2Cl N2H4 For Further Reading chemistry - bobpursley, Friday, March 16, 2007 at 11:26am We will be happy to critique your

    asked on March 16, 2007
  14. chemistry

    what is the oxidation number for nitrogen in the following? NH3 NO2 1- N2 NO2Cl N2H4 We will be happy to critique your thinking or work. I don't even have a clue as to how to work it out.

    asked on March 16, 2007
  15. math

    what is

    asked on December 1, 2006
  1. advanced algebra 2

    thanks

    posted on January 21, 2018
  2. Enthalpy (chemistry 105)

    Wow Pearson was messed up I was right the whole time. Thank you for replying, but your advice was missing some details. The mass of the unknown (like in my mole calculation) has to be included in the mass with the water to get the right amount of joules.

    posted on October 30, 2017
  3. math

    10%?

    posted on August 31, 2016
  4. algebra

    alright, thank you!!

    posted on May 5, 2016
  5. Science 10

    mgh=1/2mv^2 gh = 1/2v^2 9.81 x h = (0.5)(15.0 m/s)^2 9.81/9.81 x h = 56.25/9.81 h = 5.7

    posted on November 26, 2015
  6. Math

    30%, .4, 1/2

    posted on February 19, 2015