Thursday
April 24, 2014

Posts by maci


Total # Posts: 80

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 to post signs saying...

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

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 could use that would re...

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.

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 to these type of prob...

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

Chemistry PLZ HELP!!!!!
HELP!!!

Chemistry PLZ HELP!!!!!
a. describe the frasch processfor mining sulfur. b. why must the water be superheated?

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.

Chemistry PLZ HELP!!!!!
give five uses of phosphorus either as the acid or as one of its salts.

Chemistry PLZ HELP!!!!!
PLEASE HELP!!!!

Chemistry PLZ HELP!!!!!
what are the names of three important nitrogen fertilizers with their formulas?

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

Chemistry PLZ HELP!!!!!
Lauren: yes im graduating 2 years early Bob: thats the one i used!

Chemistry PLZ HELP!!!!!
I'm 16 and graduating in May. But im in advanced chemistry i dont know why but i am :) Thanks again.

Chemistry PLZ HELP!!!!!
Thanks!

Chemistry PLZ HELP!!!!!
Differentiate between oxide, a peroxide, and a superoxide?

Chemistry PLZ HELP!!!!!
Thanks

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

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

Chemistry PLZ HELP!!!!!
what types of close packed unit cells do most metals assume?

Chemistry PLZ HELP!!!!!
distinguish between aorphous and crystalline soilds and give an example of each

Chemistry PLZ HELP!!!!!
THANK YOU

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

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

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

Chemistry PLZ HELP!!!!!
explain the difference between hydrogen bonds and dipole dipole forces.

Chemistry PLZ HELP!!!!!
how are intermolecular forces different from chemical bonds?

Chemistry PLZ HELP!!!!!
what conditions must exist for a polyatomic molecule to be nonpolar?

Chemistry PLZ HELP!!!!!
Thanks got it now!

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?

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?

Chemistry PLZ HELP!!!!!
Thanks!

Chemistry PLZ HELP!!!!!
what do we mean when we describe a molecule as being polar?

Chemistry PLZ HELP!!!!!
Thank you again!

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

Chemistry PLZ HELP!!!!!
Thank you so much!

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

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?

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

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

American Government
what are some problems with regulatory agencies?

American Government
what distinguishes the irs and osha from other regulatory agencies?

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

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

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

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

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

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

American Government
explain the importance of a president's character.

Chemistry Help!!
never mind

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

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

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

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

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

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

Chemistry Help!!
whatever is easier!

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 the combustion of propa...

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

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

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

Chemistry
So just any random number I can quadruple it to?

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

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?

Chemistry
I don't know how to explain it tho.

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.

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

Chemistry
i dont see the example you gave me.

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?

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?

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

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?

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?

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?

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

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

gym question?
yes

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 name) 30 minu...

7th grade science
compare and contrast the cells found within many-celled organisms

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