Santiago

Most popular questions and responses by Santiago
  1. Chemistry

    How much heat is required to raise the temperature of 25g of aluminum from 25.0 C to 100 C? Convert this value to joules?

    asked on April 11, 2017
  2. Chemestry

    A sample of crude potassium iodide was analyzed using this reaction (not balanced): I- + SO42- I2 + H2S (acid solution) If a 4.19-g sample of crude KI produced 1.33 g of iodine, what is the percent purity of the KI?

    asked on November 23, 2014
  3. Chemestry

    What volume of 0.140 M K2Cr2O7 will be required to oxidize the Fe2+ ion in 81.5 mL of 0.176 M FeSO4 solution? Cr2O72- + Fe2+ Cr3+ + Fe3+ (acid solution)

    asked on November 22, 2014
  4. Science

    Which tool would you use to measure how long it takes a toy car to go down a ramp?

    asked on October 25, 2017
  5. ME ENG

    Hello. I need to prepare 1 liter of a buffer of 0.1M , pH=6.0. (Acid =HCl, base=Sodium tetraborate) I have in the lab: 320331 Sigma-Aldrich hydrochloric acid ACS reagent, 37% . and 221732 Sigma-Aldrich Sodium Tetraborate (Molecular Weight : 201.22 g/mol).

    asked on July 25, 2012
  6. Algebra

    which equation represents the line that passes the point (1,5) and has a slope of negative 2? a) y=2x+7 b) y=-2+11 c) y=2x-9 d) y=2x+3

    asked on January 20, 2015
  7. pH preparation

    Hello. I need to prepare 1 liter of a buffer of 0.1M , pH=6.0. (Acid =HCl, base=Sodium tetraborate) I have in the lab: 320331 Sigma-Aldrich hydrochloric acid ACS reagent, 37% . and 221732 Sigma-Aldrich Sodium Tetraborate (Molecular Weight : 201.22 g/mol).

    asked on July 25, 2012
  8. math

    What does the heart do?

    asked on March 18, 2008
  1. math

    Te amo :3

    posted on June 1, 2018
  2. Science

    I think it's C personally tho.

    posted on October 25, 2017
  3. Science

    That's my question, the answer choices are listed under my question.

    posted on October 25, 2017
  4. Science

    A: ruler. B: Scale. C: meter stick. D: stopwatch.

    posted on October 25, 2017
  5. health

    please help ms.sue i dnt get it.

    posted on March 18, 2016
  6. HEALTH

    i looked up the link and stiil don't get it Ms.Sue

    posted on March 16, 2016
  7. Algebra

    a) was suppose to be -2x+7 so the answer would be a since it the answer is 5 right? thanks so much :)

    posted on January 20, 2015
  8. math

    3/12

    posted on February 11, 2014
  9. AP PHYSICS MECH.

    a) L=Iw L=(1/3 md^2)w b) L1=L2

    posted on April 4, 2011
  10. Spanish Essay: Looking for Corrections

    I recommend the following website. Type spanishessays in google

    posted on December 4, 2007