# Hana

Popular questions and responses by Hana
1. ## math

The letters in the word MATHEMATICS are arranged randomly. What is the probability that the first letter is E? What is the probability that the first letter is M?

2. ## math

How many 6-letter words can be made from the letters WASTEFUL if repetition of letters is allowed?

3. ## Chemistry

Ba(OH)2 is a strong electrolyte. Determine the concentration of each of the individual ions in a 0.700 M Ba(OH)2 solution. I know that Ba(OH)2 -> Ba + 2OH But how do I determine the concentrations? I feel like I am making this more complicated than need be

4. ## physics

a person pushes a box across a horizontal surface at a constant speed of .5 meter per second. the box has a mass of 40 kg and the coefficient of sliding friction is .25. The power supplied to the boxx by the person is... please Explain!!

5. ## math

You own 19 CDs. You want to randomly arrange 9 of them in a CD rack. What is the probability that the rack ends up in alphabetical order? The probability that the CDs are in alphabetical order is ?

6. ## math

A computer password is required to be 5 characters long. How many passwords are possible if the password requires 1 letter(s) and 4 digits (numbers 0-9), where no repetition of any letter or digit is allowed?

7. ## math help

Model 28% on a 5 x 5 grid. a. a 5 x 5 grid with 4 blocks filled in. b. a 5 x 5 grid with 5 blocks filled in. c. a 5 x 5 grid with 7 blocks filled in. d. a 5 x 5 grid with 20 blocks filled in. I don't know what to do, can someone give me a step-by-step

8. ## Physics

How do I solve this problem? The answers were given. Two point charges are separated by 25.0 cm. Find the net electric field these charges produce at: (a) point A (Ans: 8740 N/C, to the right) (b) point B (Ans: 6540 N/C, to the right) (c) What would be the

9. ## Physics

A 10-ft,25lb seesaw is balanced by a little girl with a weight of 50lbs and her father with a weight of 200lbs at opposite ends. How far from the seesaw's center of mass must the fulcrum be placed?

10. ## statistics

state whether the quantity described is a parameter or a statistic and give the correct notation. Correlation between height and weight for players on the 2010 Brazil World Cup team, using data from all 23 players on the roster. thanks

11. ## Chem

Which of the following will be more soluble in an acidic solution than in pure water? SrSO4 CsClO4 CuCN Ni(OH)2 AgCl Please help explain why! I've tried submitting the ones that are insoluble in water and it was wrong. I know it has something to do with

12. ## chemstiry

titration of 25ml of Na2CO3 with 0.352mol/l HCl of 15.2ml what is the molar concetraion of sodium carbonate

13. ## dara

the volume of a cube increases at average of 24cm^3 /min while it's length increases 2 cm/min

14. ## game design

What ancient game was used to settle disputes between rival cities in Mexico? the Olympics Chaturanga the Royal Game of Ur the Mesoamerican Ballgame

15. ## math

If you randomly select a card from a well-shuffled standard deck of 52 cards, what is the probability that the card you select is a diamond or club? (Your answer must be in the form of a reduced fraction.)

16. ## MATH!

the 2000 population of Jacksonville,Florida was 736,000 and was increasing at the rate of 1.94% each year. At that rate, when will the population be 1 million?

17. ## CHEMISTRYYY

A hydrated aluminium sulphate A12(SO4)3.xH2O, contains 8.10% of aluminium by mass. Find the value of x

18. ## pH

9. The pH of food entering the duodenum is changed from acidic to alkaline by A. gastric juices B. bile pigments C. intestinal enzymes D. pancreatic secretions I am unsure I think It is d YEP YOU ARE CORRECT!!!! Nope. Use the online dictionary to look up

19. ## Math

A girl is sitting on a sled. She is pushed by a spring that was compressed 0.8m. The spring constant is 2500 N/m. After moving 2.5 m across a surface that applies 60 n of friction, the girl and the sled slid up a frictionless hill. How high do the girl and

20. ## chemistry

Determine the ionic strength of the solution formed by combining the following two aqueous solutions: Potassium iodide (aq), KI: 70.0 mL, 0.203 M Ammonium sulphate (aq), (NH4)2SO4: 35.0 mL, 0.246 M

21. ## Maths

The product of two positive integers plus their sum is 95. The integers are relatively prime, and each is less than 20. What is the sum of the two integers?

22. ## Math

Matthew and Christopher set up their Teenage Mutant Ninja Turtles in a big circle, spacing each turtle equal distance from its neighbors. They then begin counting them in order around the circle, but they lost track of where they started before they finish

23. ## Math

A length of metal pipe has a circumference of 2.5 inches. the pipe is 1/16 inches thick. a gas fitter needs to know the inside diameter of the pipe to calculate the gas pressure. What is the total diameter of pipe including metal? how much of the diameter

24. ## statistics

Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4

25. ## science

Jan calculations of the talantola found that the spider able to cover 20 cm. in 5 seconds.What was the speed of the spider?

26. ## geometry

The volume of the rectangular prism is 280 cubic cm. Its base has the area of 40 sq. cm. What is the volume of the pyramid inside the prism?

27. ## geometry

The volume of the rectangular prism is 280 cubic cm. Its base has the area of 40 sq. cm. What is the volume of the pyramid inside the prism???

28. ## physics

A heat engine has a hot reservoir of 680°C and a cold reservoir of 220°C. What is the efficiency of the engine?

29. ## Child day care management

A2006 survey stated that youngsters ages 12-17 who were left home three or more days

30. ## Child day care management

One can encourage children to engage in sociodramatic play by

31. ## Child day care management

I need to check my answers for exams number 00385300 working with school-age children

32. ## Child day care management

To determine liability one must figure out who is legally

33. ## marketing

How to make segmentation for a healthy food restaurant ?

34. ## physics!

A truck driver travels a distance of 100 miles due East. He then turns at an angle of 35 degrees S of E and travels a distance of 50 miles. What is the resultant displacement? What is the direction?

35. ## english(easy!) my mind cant decide :(

what is the setting for Disney's Snow White and the Seven Dwarf?

36. ## math

the population of Smallville in the year 1890 was 6250.assume the population increased at a rate of 2.75% per year. predict when the population reached 50,000 I'm not suppose to use logs to find the answer :(

37. ## math

Describe how to transform the graph of f into the graph of g. f(x)=2^x and g(x)=2^x-3 I don't know how to do this step by step :(

38. ## MATH

Describe how to transform the graph of f into the graph of g. f(x)=2^x and g(x)=2^x-3

39. ## physics

A girl goes 4 avenues east{.8 miles), then 24 streets south(1.2 miles), the n 1 avenue west(.2 miles), and finally 8 streets north(.4 miles). -what distance did she travel? -what is her resultant displacement?

40. ## math

Find the surface area of a rectangular prism with a length of 10 cm, a width of 4 1/2 cm, and a height 8 3/4 cm. Round your answer to the nearest hundredth.

41. ## Environmental Science

How can I relate the Fourth Principle of Ecosystem Sustainability to: d. medicine:

42. ## Environmental Science

How can I relate the Fourth Principle of Ecosystem Sustainability to: c. biotechnology:

43. ## Environmental Science

Relate the Fourth Principle of Ecosystem Sustainability to: d. medicine:

44. ## Environmental Science

Relate the Fourth Principle of Ecosystem Sustainability to: c. biotechnology:

45. ## Environmental Science

Relate the Fourth Principle of Ecosystem Sustainability to: a. endangered species

47. ## Environmental Science

Relate the Fourth Principle of Ecosystem Sustainability to: a. endangered species:, b. agriculture:, c. biotechnology:, d. medicine:

48. ## Science

why can't you use Carbon to extract Aluminium? and How do you extract Aluminium using elecrolysis?

49. ## french

on regarde le match? -------------------- on marche sur la corniche? ------------------------ on parten voiture? ---------------- on va aila tour du caire? ---------------------- je fais une excursion au fayoum? -------------------------------- nous

50. ## physics

A stone is thrown vertically upward with a speed of 11.5 m/s from the edge of a cliff 95.0 m high. (a) How much later does it reach the bottom of the cliff? (b) What is its speed just before hitting? (c) What total distance did it travel? For (c), the

51. ## physics

A stone is thrown vertically upward with a speed of 11.5 m/s from the edge of a cliff 95.0 m high. (a) How much later does it reach the bottom of the cliff? (b) What is its speed just before hitting? (c) What total distance did it travel? For (c), the

52. ## physics

A stone is thrown vertically upward with a speed of 11.5 m/s from the edge of a cliff 95.0 m high. (a) How much later does it reach the bottom of the cliff? (b) What is its speed just before hitting? (c) What total distance did it travel? For (c), the

53. ## physics

A bag of sand dropped by a would-be assassin from the roof of a building just misses Tough Tony, a gangster 2-m tall. The missile traverses the height of Tough Tony in 0.22 s, landing with a thud at his feet. How high was the building? Ignore friction.

54. ## world history

explain the reason of the early roman republic were dissatisfied whith aptricians rule and how the patricians placated them

55. ## science,

why look for black precipitate in the butt instead of on the surface of an h2s test?

56. ## Science

Impact of California Water Wars on the Owens Valley?

57. ## english

I need help with this question and would really apprecitae it the help What are three feutures of a lyric poem? Explain how "Song Concerning Dream of the thunderbirds" uses these features

58. ## biology

How does the interaction between a carrier protein and the substance it transports resemble the interaction between an enzyme and its substrate?

59. ## biology

How does the interaction between a carrier protein and the substance it transports resemble the interaction between an enzyme and its substrate?

60. ## organic chemistry

The solubility of a compound is 59g per 100mL in boiling methanol and 30g per 100mL in cold methanol, whereas its solubility in water is 7.2g per at 95 degrees Celsius and 0.22g per 100mL at 2 degrees Celsius. Which solvent would be better for

61. ## organic chemistry

if you were not told which solvent to use in the recrystallization experiment, how would you determine a suitable recrystallization solvent ?

62. ## english

why do teenager got an unwanted pregnancy an early marriage?

63. ## chemistry

predict how many sodium ions would combine with: (a) a chlorine ion. (b) a carbonate ion. (c) a phosphate ion.

1. ## physics

E=100g×450J/kg×60° E=2,700,000J

posted on June 3, 2020
2. ## main ideas

The sun’s heat can easing leak away out into space.

posted on May 26, 2020
3. ## chemistry

im not seeming to get the right ans. i used .5(CiZi) but still not working

posted on April 8, 2020
4. ## Geometry

IDK man

posted on March 25, 2020
5. ## physics

Q is 34

posted on October 20, 2019
6. ## Algebra

Algebras hard. DIFFICULT

posted on October 16, 2019
7. ## physics

50

posted on May 13, 2019
8. ## math

i think it is 1.

posted on March 12, 2018
9. ## CDA

the name and contact information (phone number,web site, etc) of translation service for families whose home language is other than English, as well as service that provides American Sign Language translation.

posted on October 24, 2017
10. ## physical geography

i thibnk anartica

posted on September 6, 2017
11. ## chemistry

density H3PO4 = 1.689g/L density = mass/volume mass = 1.689 x 1000 = 1689g H3PO4 in 1000ml solution 1)85 wt% 1689g x 85/100 = 1435.65g H3PO4 (in 1000ml solution) if you want to prepare 100ml of solution 1000ml = 1435.65g 100ml = A A = 100/1000 x 1435.65g =

posted on August 24, 2017
12. ## chemistry

2.4 g

posted on September 26, 2016
13. ## john

posted on February 21, 2016
14. ## statistics

thanks

posted on February 21, 2016

81 The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?

posted on February 7, 2016
16. ## math help

Yay! Thanks!

posted on February 3, 2016
17. ## math help

So, is it c?

posted on February 3, 2016
18. ## math

3 hundred 40 tens there is the answer that help you a lot im only in 1st grade true i did very well on a math test and this question was on the test

posted on October 26, 2015
19. ## math help

2 1/2

posted on September 29, 2013
20. ## physics

Q=mHf =0.25x3.34x10^5=83500J

posted on May 29, 2013
21. ## english(easy!) my mind cant decide :(

didn't she stay in with the Queen in the beginning?

posted on January 14, 2013
22. ## math

thank you

posted on January 14, 2013
23. ## Physics

how

posted on November 6, 2012

yes

posted on June 17, 2012
25. ## chemistry

Calculate the Calorimeter Constant if 25 g of water at 51C was added to 25 g of water at 25C with a resulting temperature of 35C?

posted on November 2, 2011
26. ## Statistics

What Z value corresponds to the lowest 20% under a normal curve

posted on July 16, 2011
27. ## WRITING

Writing is fun

posted on May 8, 2011
28. ## WRITING

Well

posted on May 8, 2011
29. ## spanish

regreso - singular yo form desayunamos - plural form for 'we'

posted on October 11, 2010
30. ## math

posted on January 20, 2010
31. ## 14 line 10 syllable poem

i am not sure, do you know where to find other sonnets though?

posted on May 26, 2009
32. ## HELP ME pLEASE. DUE TOMORROW D:

if everyone of them had a different opinion then each one will have 3 argument which will add to 12 this is how i see it.

posted on March 1, 2009