Maci

Newest questions and responses by Maci
  1. Early childhood education

    Why does it matter that math materials are either open-ended or self-correcting?

    asked on January 11, 2018
  2. Psychology

    While talking to Jim, Mary recalled that his birthday tomorrow. Mary wished him a happy birthday. What type of memory did Mary exhibit? A. Event   B. Implicit   C. Explicit   D. Numerical

    asked on February 4, 2017
  3. Math

    In a school survey year 6 found that for every 4 girls there were 5 boys what is the ratio of girls to boys

    asked on December 5, 2016
  4. Math

    You went to lunch with your friend and the bill is $19.00 your lunch is $3.00 more than your friends. How much was your friends lunch? f + 3 = 19; $8.00 3f + 2 = 19; $8.00 2f + 3 = 19; $8.00 2f - 3 = 19; $8.00 Mark weighs 74 pounds. together he and his

    asked on December 17, 2015
  5. English

    How do I make this more positive? Dear renter: Effective march 1, the rent for your parking space will go up $10 a month. However, our parking lot is still not the most expensive in town. Many of you have asked us to provide better snow and ice removal and

    asked on April 22, 2014
  6. College advance english

    how do varieties of informative and positive messages adapt the basic pattern?

    asked on April 3, 2014
  7. Pre-Ap English

    My teacher has assigned a project. I have to make a collage for Pip in Great Expectations. I have to use symbols that would represent what he loved or feared while he was in The Forge, London, The Forge again, then to Cairo. Do you know of any symbols I

    asked on March 24, 2013
  8. math

    My teacher never specifically told us how to do these type of problems and now i have 10 of the same type of questions for homework due when i come back to class 2 days. a^7b^6 ________ a^5b Im not asking for the answer but the steps to get to the answers

    asked on August 28, 2012
  9. Chemistry PLZ HELP!!!!!

    give equations showing the commercial methods for preparations of the halogen (F2, Cl2, Br2, I2)

    asked on April 10, 2012
  10. Chemistry PLZ HELP!!!!!

    a. describe the frasch processfor mining sulfur. b. why must the water be superheated?

    asked on April 10, 2012
  11. Chemistry PLZ HELP!!!!!

    describe what happens to sulphur as it is heated from room temperature to about 250 degrees c mention the various allotropes encountered.

    asked on April 10, 2012
  12. Chemistry PLZ HELP!!!!!

    give five uses of phosphorus either as the acid or as one of its salts.

    asked on April 10, 2012
  13. Chemistry PLZ HELP!!!!!

    what are the names of three important nitrogen fertilizers with their formulas?

    asked on April 9, 2012
  14. Chemistry PLZ HELP!!!!!

    though both nitrogen and oxygen are diatomic gases, nitrogen is far less reactive than oxygen. Why?

    asked on April 9, 2012
  15. Chemistry PLZ HELP!!!!!

    Differentiate between oxide, a peroxide, and a superoxide?

    asked on April 9, 2012
  16. Chemistry PLZ HELP!!!!!

    write balanced equations of hydrogen with the following: a. potassium b. fluorine c. sulfur

    asked on April 9, 2012
  17. Chemistry PLZ HELP!!!!!

    write balanced equations of hydrogen with the following: a. potassium b. fluorine c. sulfur

    asked on April 9, 2012
  18. Chemistry PLZ HELP!!!!!

    what types of close packed unit cells do most metals assume?

    asked on April 9, 2012
  19. Chemistry PLZ HELP!!!!!

    distinguish between aorphous and crystalline soilds and give an example of each

    asked on April 9, 2012
  20. Chemistry PLZ HELP!!!!!

    which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3

    asked on April 9, 2012
  21. Chemistry PLZ HELP!!!!!

    which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3

    asked on April 9, 2012
  22. Chemistry PLZ HELP!!!!!

    which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3

    asked on April 9, 2012
  23. Chemistry PLZ HELP!!!!!

    explain the difference between hydrogen bonds and dipole dipole forces.

    asked on April 9, 2012
  24. Chemistry PLZ HELP!!!!!

    how are intermolecular forces different from chemical bonds?

    asked on April 8, 2012
  25. Chemistry PLZ HELP!!!!!

    what conditions must exist for a polyatomic molecule to be nonpolar?

    asked on April 8, 2012
  26. Chemistry PLZ HELP!!!!!

    what shape would you expect a molecule to hove that was based on an atom with only two bonding pairs of electrons? Three bonding pairs? Four?

    asked on April 8, 2012
  27. Chemistry PLZ HELP!!!!!

    what shape would you expect a molecule to hove that was based on an atom with only two bonding pairs of electrons? Three bonding pairs? Four?

    asked on April 8, 2012
  28. Chemistry PLZ HELP!!!!!

    what do we mean when we describe a molecule as being polar?

    asked on April 8, 2012
  29. Chemistry PLZ HELP!!!!!

    Tell whether the bonds between the following atoms are polar covalent or pure covalent bonds. a. Si-Si b. H-O c. C-H d. C-O e. Cl-F f. Cl-Cl g. N-H h. O-O

    asked on April 8, 2012
  30. Chemistry PLZ HELP!!!!!

    Predict what type of bonging predominates in each of the following. a. AsCl3 b. LiBr c. CuNi d. SO2 e. XeF6 f. Fe g. MnF2 h. HCN i. Al2O3 j. KCl k. O2 l. Cr

    asked on April 8, 2012
  31. Chemistry PLZ HELP!!!!!

    if Ca and F atoms are allowed to react what will be the electron configurations and lewis structures of the resultant ions?

    asked on April 5, 2012
  32. Chemistry

    if Ca and F atoms are allowed to react what will be the electron configurations and lewis structures of the resultant ions?

    asked on April 5, 2012
  33. Physical Science

    A force of 20 Newtons gives a brick an acceleration of 5 m/s^2. What is the mass of the brick?

    asked on January 31, 2012
  34. American Government

    what are some problems with regulatory agencies?

    asked on October 31, 2011
  35. American Government

    what distinguishes the irs and osha from other regulatory agencies?

    asked on October 31, 2011
  36. Chemistry Help!!

    How are intermolecular forces different from the forces that bond atoms together into molecules? How are they similar?

    asked on October 25, 2011
  37. Chemistry Help!!

    why is it impossible to draw a distinction between natural substances and chemical substances?

    asked on October 25, 2011
  38. Chemistry Help!!

    which element do not combine readily with other elements because they already have eight electrons in their outermost shell?

    asked on October 20, 2011
  39. Chemistry Help!!

    why is it impossible to draw a distinction between natural substances and chemical substances?

    asked on October 20, 2011
  40. American Government

    what are the three ceremonial functions of the president as chief of state?

    asked on October 18, 2011
  41. American Government

    what is the foundation of the president's authority and influence?

    asked on October 18, 2011
  42. American Government

    explain the importance of a president's character.

    asked on October 18, 2011
  43. Chemistry Help!!

    Predict whether triangle s would be positive or negative for each of the following; give a reason for your answer.

    asked on October 17, 2011
  44. Chemistry Help!!

    Arrange the following systems in order of increasing randomness or disorder(bring with the most ordered system) 1 mol liquid ammonia 1 mol gaseous ammonia 1 mol solid ammonia

    asked on October 17, 2011
  45. Chemistry Help!!

    when triangle s (entropy) is positive does that mean that the disorder has increased or decreased? Explain

    asked on October 17, 2011
  46. Chemistry Help!!

    how many joules of heat are needed to vaporize 50.0 g water at 100.0 C?

    asked on October 12, 2011
  47. Chemistry Help!!

    how many joules of heat are needed to heat 900.0g water from 18.0 C to 98.0 C?

    asked on October 12, 2011
  48. Chemistry Help!!

    How many joules of heat are required to melt 60.5g of ice at 0 degrees C?

    asked on October 12, 2011
  49. Chemistry Help!!

    Propane(C3H8), the major component of LP game, is often used as heating and cooking fuels in homes. When propane is burned( reacted with oxygen), CO2(g) and H2O(g) are produced. 1) Write an equation for the reaction and calculate the enthalpy change for

    asked on October 12, 2011
  50. Chemistry Help!!

    sodium metal reacts violently with water to produce aqueous sodium hydroxide and hydrogen gas. calculate the enthalpy change for this reaction.

    asked on October 11, 2011
  51. Chemistry

    If the pressure on a balloon were quadrupled what would happen to the balloons volume?

    asked on September 28, 2011
  52. Chemistry

    A sperm whale dives from the surface to great depths the air in its lungs progessively shinks until the lungs are completely collapsed. when the whale ascends its lungs return to their former size. use boyles law to explain this phenomenon.

    asked on September 28, 2011
  53. Chemistry

    The reaction for the burning of one type of match tip is as follows: P4S3(s) + 8 O2(g)----> P4O10(g) + 3 SO2(g) What volume in L of SO2 at STP can be produced by the burning of 1.00 g P4S3 in excess O2?

    asked on September 28, 2011
  54. Chemistry

    Why is it necessary to correct the pressure of a gas that is collected over water?

    asked on September 28, 2011
  55. Chemistry

    Consider three gases: chlorine, freon-12, and radon. According to Grahams law of diffusion which gas would you expect to diffuse the fastest through a room? Which would diffuse slowest?

    asked on September 28, 2011
  56. Chemistry

    when calculating stoichiometric relationships in gas reactions using the combined gas law why is it important to convert the volumes and pressure to STP?

    asked on September 28, 2011
  57. Chemistry

    what is the partial pressure of N2 in the mixture of N2 and O2 having a total pressure of 1075 torr if the partial pressure of O2 is 720 torr?

    asked on September 28, 2011
  58. Science

    What are the different types of seeds??(mustard,apples,etc)

    asked on December 9, 2010
  59. gym question?

    we were told to pick a good exercise routine to exercise to i picked this one and i was wondering if its good cardio. if you have one please share. 30 min treadmill 30 minutes bike 30 min treadmill 30 min "swishy thing that goes circular" (dont know the

    asked on February 5, 2010
  1. Psychology

    is it B?

    posted on February 4, 2017
  2. Math

    Ok thank you so so much Damon. :)

    posted on December 17, 2015
  3. geometry help

    115=x(4+19)/2 115/11.5= 11.5x/11.5 x=10 Height= 10

    posted on April 10, 2014
  4. Math I need help Ms. Sue please answer!

    144 = 2 * 2 * 2 * 2 * 3 * 3 2 to the 4th power and 3 to the 2nd power.

    posted on September 25, 2012
  5. Chemistry PLZ HELP!!!!!

    HELP!!!

    posted on April 10, 2012
  6. Chemistry PLZ HELP!!!!!

    PLEASE HELP!!!!

    posted on April 10, 2012
  7. Chemistry PLZ HELP!!!!!

    Lauren: yes im graduating 2 years early Bob: that's the one i used!

    posted on April 9, 2012
  8. Chemistry PLZ HELP!!!!!

    I'm 16 and graduating in May. But im in advanced chemistry i don't know why but i am :) Thanks again.

    posted on April 9, 2012
  9. Chemistry PLZ HELP!!!!!

    Thanks!

    posted on April 9, 2012
  10. Chemistry PLZ HELP!!!!!

    Thanks

    posted on April 9, 2012
  11. Chemistry PLZ HELP!!!!!

    THANK YOU

    posted on April 9, 2012
  12. Chemistry PLZ HELP!!!!!

    Thanks got it now!

    posted on April 8, 2012
  13. Chemistry PLZ HELP!!!!!

    Thanks!

    posted on April 8, 2012
  14. Chemistry PLZ HELP!!!!!

    Thank you again!

    posted on April 8, 2012
  15. Chemistry PLZ HELP!!!!!

    Thank you so much!

    posted on April 8, 2012
  16. Chemistry Help!!

    never mind

    posted on October 17, 2011
  17. Chemistry Help!!

    whatever is easier!

    posted on October 12, 2011
  18. Chemistry Help!!

    i balanced the equation: 2 Na + 2 H2O = H2 + 2 NaOH. What delta Hf value am i suppose to look up?

    posted on October 12, 2011
  19. Chemistry Help!!

    is it: Na + H2O -> ???? Hf is hafnium. i don't know this stuff.

    posted on October 11, 2011
  20. Chemistry

    I still don't get how to get the answer.

    posted on October 5, 2011
  21. Chemistry

    So when the whale goes farther in the water the pressure increases and the volume of his lungs decreases. When the whale ascends, the pressure decreases and the volume of his lungs increases. Does that make sense?

    posted on September 28, 2011
  22. Chemistry

    So just any random number I can quadruple it to?

    posted on September 28, 2011
  23. Chemistry

    i don't see the example you gave me.

    posted on September 28, 2011
  24. Chemistry

    Ok but What volume in L of SO2 at STP can be produced by the burning of 1.00 g P4S3 in excess O2?

    posted on September 28, 2011
  25. Chemistry

    I don't know how to explain it tho.

    posted on September 28, 2011
  26. gym question?

    yes

    posted on February 5, 2010
  27. 7th grade science

    compare and contrast the cells found within many-celled organisms

    posted on February 23, 2008