# 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?

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

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

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

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

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

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

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

9. ## Chemistry PLZ HELP!!!!!

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

10. ## Chemistry PLZ HELP!!!!!

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

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.

12. ## Chemistry PLZ HELP!!!!!

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

13. ## Chemistry PLZ HELP!!!!!

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

14. ## Chemistry PLZ HELP!!!!!

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

15. ## Chemistry PLZ HELP!!!!!

Differentiate between oxide, a peroxide, and a superoxide?

16. ## Chemistry PLZ HELP!!!!!

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

17. ## Chemistry PLZ HELP!!!!!

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

18. ## Chemistry PLZ HELP!!!!!

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

19. ## Chemistry PLZ HELP!!!!!

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

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

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

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

23. ## Chemistry PLZ HELP!!!!!

explain the difference between hydrogen bonds and dipole dipole forces.

24. ## Chemistry PLZ HELP!!!!!

how are intermolecular forces different from chemical bonds?

25. ## Chemistry PLZ HELP!!!!!

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

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?

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?

28. ## Chemistry PLZ HELP!!!!!

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

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

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

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?

32. ## Chemistry

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

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?

34. ## American Government

what are some problems with regulatory agencies?

35. ## American Government

what distinguishes the irs and osha from other regulatory agencies?

36. ## Chemistry Help!!

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

37. ## Chemistry Help!!

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

38. ## Chemistry Help!!

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

39. ## Chemistry Help!!

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

40. ## American Government

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

41. ## American Government

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

42. ## American Government

explain the importance of a president's character.

43. ## Chemistry Help!!

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

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

45. ## Chemistry Help!!

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

46. ## Chemistry Help!!

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

47. ## Chemistry Help!!

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

48. ## Chemistry Help!!

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

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

50. ## Chemistry Help!!

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

51. ## Chemistry

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

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.

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?

54. ## Chemistry

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

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?

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?

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?

58. ## Science

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

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

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 9, 2014

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 9, 2012
6. ## Chemistry PLZ HELP!!!!!

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

Thanks got it now!

posted on April 7, 2012
13. ## Chemistry PLZ HELP!!!!!

Thanks!

posted on April 7, 2012
14. ## Chemistry PLZ HELP!!!!!

Thank you again!

posted on April 7, 2012
15. ## Chemistry PLZ HELP!!!!!

Thank you so much!

posted on April 7, 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