# Ross

Popular questions and responses by Ross
1. ## Chemistry

I wanted to now what is the molecular geometry of SeBr4, because I believe is a trigonal bipyramid...but I am not sure...please help me.... I thought it was a see-saw shape. See http://www.stolaf.edu/depts/chemistry/mo/struc/explore.htm You can see SeF4,

Name the set(s) of numbers to which 1.68 belongs. a. rational numbers b. natural numbers, whole numbers, integers, rational numbers c. rational numbers, irrational numbers d. none of the above my answer a)rational numbers

3. ## physics

a modified U-tube: the right arm is shorter than the left arm. The open end of the right arm is height d = 10.0 cm above the laboratory bench. The radius throughout the tube is 1.60 cm. Water is gradually poured into the open end of the left arm until the

4. ## NSU

The Omega pharmaceutical firm has five salespersons, whom the firm wants to assign to five sales regions. Given their various previous contacts, the salespersons are able to cover the regions in different amounts of time. The amount of time (days) required

5. ## MATH

Find the word form 0.007 a. seven hundredths b. seven tenths c. seven thousand d. not given I selected a. seven hundredths

6. ## Geometry

How is constructing a perpendicular bisector similar to constructing an angle bisector? How is it different?

7. ## math

a ball tossed to a height of 4 meters rebounds 40% of its previous height. the total distance travelled by the ball by the time it comes to rest is?

8. ## chemistry

Strychnine, C21H22N2O2(aq) is a weak base but a powerful poison. Calculate the pH of a 0.001 mol/L solution of strychnine. The Kb of strychnine is 1.0 x 10^-6 My work: I called Strychnine SN SN + HOH --> SNH+ + OH- Kb = (SNH+)(OH-)/(SN) (SNH+) = x (OH-) =x

9. ## chemistry

For the titration of 20.0 mL of 0.1500 mol/L NH3(aq) with 0.1500 mol/L HI(aq)(the titrant), calculate a) the pH before any HI(aq) is added b) the pH at the equivalence point

10. ## Life orietation

Six suggestion on how to address the example of human rights violation

11. ## math

Simplify the expression. 17 – 6 × 10 ¸ 2 + 12 a. 67 b. 59 c. –1 my answer -1 ?????

12. ## chemistry

Strychnine, C21H22N2O2(aq) is a weak base but a powerful poison. Calculate the pH of a 0.001 mol/L solution of strychnine. The Kb of strychnine is 1.0 x 10^-6 My work: I called Strychnine SN SN + HOH --> SNH+ + OH- Kb = (SNH+)(OH-)/(SN) (SNH+) = x (OH-) =x

13. ## History

Why did the cost of slave labor double, even after the invention of the cotton gin? A. The demand for enslaved workers for the cotton fields was high, but the supply of workers was low due to the slave trade ban. B. Northern enslavers refused to sell their

14. ## History

How could free African Americans help their enslaved contemporaries? Select the best answer from the choices provided. A. They could participate in the Underground Railroad. B. They could support abolitionist politicians. C. They could subscribe to The

15. ## Biology

1. A long-term relationship in which both species benefit is known as parasitism. * A. True B. False*** 2. The relationship of algae living in the fur of a 3-toed sloth and helping to camouflage the sloth, is called * A. symbiosis B. mutualism C.

16. ## Physics

Hello, I really don't get something about work and I would like that someone help me, Please. .. Well I have an exercise about two objects that are connected by an ideal rope that pass through a pulley that has a moment of inertia, so my problem is: when I

17. ## Physics

The drawing shows a skateboarder moving at 5.71 m/s along a horizontal section of a track that is slanted upward by 49.8 ° above the horizontal at its end, which is 0.516 m above the ground. When she leaves the track, she follows the characteristic path

18. ## Chemistry

What volume of 0.109 M nitric acid is required to neutralise 2.50g barium hydroxide?

19. ## algebra 2

what is 7 1/5 written in radical notation

20. ## Biochem

You have prepared a 400 mL of a .210 M acetate buffer solution with a pH of 4.44. 1. Determine the concentration of both the acetate and acetic acid in the solution. 2. If you made this solution using solid sodium acetate (MW = 136 g/mol) and liquid acetic

21. ## Math

the larger of the two numbers is 8 more than twice the smaller. The sum of the numbers is 10 less than three time the larger. Find the numbers

22. ## science

what type of a drink did not floated or sank?

23. ## maths

solve 4x/3x+1 = 3?x+5

24. ## poem

i read this book named abduction and my home work is to write a poem about it but the problem is i don't know how to write poem ?

25. ## Physics

a modified U-tube: the right arm is shorter than the left arm. The open end of the right arm is height d = 10.0 cm above the laboratory bench. The radius throughout the tube is 1.60 cm. Water is gradually poured into the open end of the left arm until the

26. ## science

Which would be most appropriate to measure the mass of my pet panda in? a. kilograms b. centigrams c. Gigagrams d. milligrams its kilograms??????

27. ## science

Evaluate the following expression when r = 2 and t = 5. (2r)t - 2 a. 1022 b. 16 c. 64 d. 62

A computer manufacturer assembled 21,000 computers in October. For the month of November, they expect to double production. If a worker can assemble one computer per day, how many workers will be needed to complete the job in 28 days? a. 1,500 workers b.

29. ## math

It takes 28 minutes for a certain bacteria population to double. If there are 4,241,763 bacteria in this population at 1:00 p.m., which of the following is closest to the number of bacteria in millions at 4:30 pm on the same day?

30. ## Probability

A number cube, numbered 1 through 6, is rolled once. What is the probability of rolling an even number that is not prime? 1/6 1/3 1/2 2/3

31. ## math

7. A bag contains 2 red cubes, 3 blue cubes, and 5 green cubes. If a cube is removed and replaced in the bag and another is drawn, what is the probability that both are green? 1/4 3/8 2/5 1/2

33. ## Geometry

Planes A and B are both perpendicular to line M. What is the relationship between planes A and B?

34. ## algebra

Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets,

35. ## algebra

Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets,

how would i put these words in sentences:(PLEASE HELP ME) THANK YOU! l. general 2. inaccurate 3. interpret 4. evidence 5. demonstrate 6. relevant I start my tutoring classes in two weeks. I have been reading much more which should help me.

37. ## MATH

I THINK a. 4,000 is the answer am I right

38. ## MATH

hello- The question is round to the digit underlined Add or subtract? 7 is the underlined digit. 7,526-3,861. a. 4,000 b. 5,000 c. 3,000 d. not given

39. ## math

math ? FIND THE VALUE OF 5 - 35,791 a. five hundred b. five thousand c. five thousandths d. not given I selected - b. five thousand correct? or not?

Are there any websites that will help me with my division?

41. ## MATH

I DESPERATELY NEED TO KNOW HOW TO READ A PLACE VALUE CHART DEALING WITH DECIMALS IF ANYONE CAN GIVE ME AN EXAMPLE??

42. ## MATH

I DESPERATELY NEED TO KNOW HOW TO READ A PLACE VALUE CHART DEALING WITH DECIMALS IF ANYONE CAN GIVE ME AN EXAMPLE??

43. ## Math Quotations place value

Good evening, I am not sure if Ross wrote the questions for homework correctly however, I am a little confused as to the difference in hundreds place value vs. hundreths place value is there such a place value as HUNDRETHS? Would HUNDRETHS APPLY TO DECIMAL

44. ## math

please, does anyone know of a site I can go to online to help my son with some simple practice division? THX!!!

45. ## division

how can I learn simple division

46. ## RS

How do Christians help others?

Good evening ~ I have 2 questions. Kelsey was assigned math homework. He was given 8 word problems to solve. He estimated that it would take him 5 mins. to solve each problem (THAT WOULD TAKE 40 MINS. FOR KELSEY TO COMPLETE HIS MATH HOMEWORK) ? HOW TO

how do I write the time in three different ways for 3:50

49. ## Math

What do we call the nunmbers that cannot be arranged ito 2-row arrays

50. ## science

what is meant by an animal or plant being in the same species

51. ## chemistry

Calculate the solubility of calcium sulfate 0.010 mol/L calcium nitrate at SATP

52. ## chemistry

Calculate the pH of the following aqueous solutions: 1.00 mol/L sulfuric acid H+ = 1.00 M for the first ionization THe second one is guided by K2 K2 = (H+)(HSO4-)/(HSO4-) Plugging in K2 as follows: H+ = 1.00 + x SO4- = x HSO4= 1.00 - x Can someone please

53. ## chemistry

Please calculate the pH and [H+] of a 0.30 mol/L solution of butanoic acid,. The Ka of butanoic acid is 1.52 x 10^-5

54. ## chemistry

In a titration, how many millilitres of 0.23 mol/L NaOH(aq) must be added to 11 mL of 0.18 mol/L HI(aq) to reach the equivalence point?

55. ## chemistry

To clean a clogged drain, 26 g of sodium hydroxide is added to water to make 150 mL of solution. What are the pH and pOH values for the solution?

56. ## Algebra

3 x -x factor completely x to the third power -x

57. ## English

What is the theme of the Medusa myth?

58. ## Nature

I am researching about why water is blue. I am wondering why is the water in the Caribbean bluer that that of the North Atlantic? Thank you for using the Jiskha Homework Help Forum. This is an interesting question and here are some sites to explain it:

1. ## History

I thought this website will help me get the answer. I know what to search but Im in a hurry

posted on September 26, 2019
2. ## History

Haiti??

posted on September 26, 2019
3. ## history

@lavagirl thanks dawg but #3 is A. still got 80% 👌

posted on May 16, 2019
4. ## Math

Thanks ms sue I got 100% Guys ms sue is right B C D C

posted on March 22, 2019
5. ## Social Studies

posted on March 7, 2019
6. ## maths

posted on November 5, 2018
7. ## science

idkkk

posted on September 19, 2017
8. ## science

trovants

posted on March 30, 2017
9. ## math 214

yes because they never touch

posted on January 31, 2017
10. ## math

15*w+1.5(15)*y 15w+22.5y Week=7 days. 7(15w+22.5y) 105y+157.5y hours

posted on December 14, 2015
11. ## math

Insert parentheses to make statement true 6+7x4-2=26

posted on September 2, 2015
12. ## math

n=12 n+11=48

posted on March 15, 2015
13. ## Chemistry

Where do you substitute Kc into the expression?

posted on April 12, 2014
14. ## physics

An object is dropped onto the moon (gm = 5 ft/s2). How long does it take to fall from an elevation of 250 ft.?

posted on February 22, 2012
15. ## Year 12 can't do year 7 simple math-help

i cant tell the difference .... i cant even do it and im in year 12

posted on March 28, 2011
16. ## Math

Wpw, way to post Ross problems on here.

posted on March 25, 2011
17. ## math

p = 160/21~7.62

posted on November 4, 2010
18. ## science

Evaluate the following expression when r = 2 and t = 5. (2r)^t - 2 a. 1022 b. 16 c. 64 d. 62

posted on September 12, 2010

would like to see an example of what the plan should look like to get me started.

posted on September 10, 2010

1,500 workers

posted on September 9, 2010
21. ## Probability

posted on July 22, 2010
22. ## math

Please tell me if this is correct 1/2

posted on July 22, 2010
23. ## math

Please tell me if this is correct 7/20

posted on July 22, 2010
24. ## Probability

1/2 Please tell me if this is correct

posted on July 22, 2010
25. ## Probability

1/16 Please tell me if this is correct

posted on July 22, 2010
26. ## Algebra

that will be 5 so you are saying that my answer is 5? I though that because it was positive my answers was going to be differents. For example I had x=-1 4x^3+8x-3x-2 and after doing all the problems my answer was 13, but the x was a negative one that was

posted on April 15, 2010
27. ## physics

The way I solved the first part of the question was: Vo=? d=7.18 m Vf = 7.80m/s a = 9.81m/s^2 So find the initial Vo velocity using: Vf^2 - Vo^2 = 2ad Then once you get Vo, use the same equation to find the d, when Vf = 0, that's when the height is

posted on April 12, 2010
28. ## MATH

I THINK a. 4,000 is the answer am I right

posted on October 3, 2009
29. ## math

thanks much!!!!

posted on May 4, 2009

Just would like to know if you have any suggestions on how I would help my son tell time better. He really struggles with this. Thankks!

posted on December 2, 2008

thank you thank you thank you!!!

posted on December 2, 2008
32. ## making dot arrays

odd numbers

posted on September 6, 2008
33. ## chemistry

I am still getting the wrong answer. YOu are positive this is the answer? Perhaps my computer system is wrong?

posted on April 7, 2008
34. ## chemistry

0.003898-- this is H+? Ka = ( )(0.00398)/( ) What would be the concentration of C6H5COO- ?

posted on April 7, 2008
35. ## chemistry

Wow , thanks you are a really excellent expert! :)

posted on April 7, 2008
36. ## chemistry

Thank you! I still have to read over it but for now I beleive I got the jist of it

posted on April 6, 2008