# What happened if you put the Elodea leaf cells in a solution of 0.5% NaCl,1.8% NaCl and 0.9%NaCl?

36,754 questions, page 150
1. ## MATH HELP QUICK

1. 2(x – 3) = 2x one solution no solutions infinitely many solutions 2. 3(y – 3) = 2y – 9 + y one solution no solutions infinitely many solutions 3. 10x – 2 – 6x = 3x – 2 + x one solution no solutions infinitely many solutions 4. 4(x + 3) + 2x

Can you check please: 1. Joe has used 75 sheets of a pack of notebook paper, which is 5/8 of the entire pack. The equation 5/8 s = 75 can be used to find the number of sheets "s" in a full pack. Determine the solution of the equation, and tell what the

asked by Alex on November 21, 2013
3. ## novel help

Hello, I need to write a short review on the novel Girl Interrupted while I have read the book twice I can't find how the disorder that Susanna Kaysen has affected her family members, does it say in the book, also I need to put what treatment she received

asked by chris on October 12, 2008
4. ## Physics - Kinematics

While driving a car, you see an obstruction in the road. It takes you 0.80 seconds to react and put your foot on the brake. The car is travelling at 25 m/s. If, when the brakes are applied, the acceleration is 9.3 m/s^2 [backwards], what is the total

asked by Azure on February 25, 2019
5. ## Consumer math

When Greg was born, his grandmother put \$5000 in a savings account for his college expenses. It was compounded at 2.5 percent semiannually, and left in the account 18 years. How much was in the account? Round to the nearest dollar.

asked by Cosumer math on April 9, 2012
6. ## Geometry

TV screens are measured on the diagonal. If we have a TV-cabinet that is 72 inches long and 64 inches high, how large a TV could we put in the space (leave 2-inches on all sides for the edging of the TV)? Round your answer to the nearest tenth.

asked by Rachel on June 2, 2017
7. ## Physics

Suppose the coefficient of static friction between the road and the tires on a car is 0.60 and the car has no negative lift. What speed will put the car on the verge of sliding as it rounds a level curve of 29.3 m radius?

asked by Andrew on February 18, 2010
8. ## algebra

I've seen the exclamation point (!) put after numbers (ex. 3!), but I don't know what they mean. Can somebody tell me the steps on solving a problem like this? Thanks!! ! means factorial. 5! means 5*4*3*2*1 5!/3! means (5*4*3*2*1)/(3*2*1) which is equal to

asked by Emily on April 24, 2007
9. ## Math

Hector baked a cake for his moms birthday. It is in the shape of a rectangle 16 inches long and 12 inches wide. He plans to put a candle at each corner and spaced 4 inches apart along each side. How many candles will he need?

asked by Shaye on November 9, 2016
10. ## Chemistry re-post

I took a look at this question to see if I copied it correctly, and it does NOT say how much of the solution was used. It does use mols as the unit. Dr. Bob, I am not sure what you mean by "decays into Argon." I realize that the 38 CL decays to Argon, but

asked by Nancy on July 23, 2013

Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in the figure

asked by Anonymous on December 4, 2012
12. ## equation of the normal

An equation of the normal to the graph of f(x) = x / (2x-3) at (1,f(1)) is ........ find f' Then, the slope of the normal will be -1/f' Make the equation g(x)= -1/f' + b put in the point 1, f(1), and solve for b, and you have it.

asked by Jen on December 9, 2006
13. ## Practice Sentences for French

Can someone give me practice sentences for direct and indirect objects? I want to see if I am able to do them. Also can you give me some sentences to put in the passe compose? thanks!

asked by Bryce on September 27, 2012
14. ## mat115

A rectangular picture window is 6 ft by 4 ft. Polly wants to put a trim molding around the window. How many feet of molding should she buy?

asked by wayne on June 20, 2009
15. ## science

A 6.2 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.41 m above the counter?

asked by ashley on September 3, 2010
16. ## Physics conceptual questions

You have a drink that you want to cool off? You could put in 100 g of ice or 100 g of water, both at 0 degree C. Which one would be more effective in cooling your drink? Why?

asked by Bill on January 14, 2013
17. ## physics

A 4.6 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.45 m above the counter?

asked by kim on September 17, 2016
18. ## science

A 5.8 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.57 m above the counter?

asked by vanessa on February 4, 2012
19. ## math

If a ramp has a slope of 1/8, and I need to put a support post 11 feet from the low point on the ramp, how long should the post be?

asked by Hannah on April 29, 2013
20. ## math

If my principal is 232 and my interest is 3% and I put the 232 dollars in the bank for 2 years ,how much money will I have at the end of the 2 years

asked by Anonymous on February 5, 2012
21. ## Math

Frank wants to put up a fence around a rectangular garden. The garden measures 12 feet by 10 feet. How much fencing material does he need?

asked by Roxxy on February 8, 2017
22. ## Math

A satellite dish has a diameter of 32 inches and is 6 inches deep. If the antenna needs to be put at the focus of the parabola, where would the parabola be placed?

asked by Harry on November 17, 2016
23. ## Chemisty

The compound potassium carbonate is a strong electrolyte. Write the reaction when potassium carbonate is put into water

asked by ben on January 22, 2012
24. ## physics

A 4.5 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.55 m above the counter?

asked by kaira on September 17, 2011
25. ## English/Grammar

I have a comma question! When using the phrase "as well as" do i put the comma before, after, or before AND after the phrase. An example sentince is: At the store i bought milk as well as bread.

asked by Abby on November 8, 2008
26. ## Chemisty

The compound copper(II) nitrate is a strong electrolyte. Write the reaction when copper(II) nitrate is put into water

asked by love on January 22, 2012
27. ## Math

room size i s 10ft x 15ft. i want to put tile down and the tile size is 3 inches in all sides. How many tiles do I need?

asked by Corrin on February 9, 2012
28. ## Math: graphing check

for this x < 3 would I put a dot on 3 (on the y-axis) and it would be a dotted line just through 3 vertical. and which side would be shaded the right side where the x-axis is negatives.

asked by Amy~ on August 31, 2010
29. ## Math

Rose has a square garden with an area of 49 square feet. She wants to put a fence around her garden. How much fencing does she need to purchase?

30. ## Physical science

A 6.2 "kil" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.31 m. above the counter?

asked by Liz on September 9, 2012
31. ## Dr.Bob

I was wondering if I'm synthesizing a product in the end. I shouldn't put the end product of each reaction on the front page as well right?

asked by ~christina~ on April 8, 2008
32. ## physics

A 4.6 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.45 m above the counter

asked by kim on September 18, 2016
33. ## Math

A triangle has sides 3x + 7, 4x – 9, and 5x + 6. Find the equation that represents its perimeter I believe you put each equation which represents a side in parenthesis: (3x + 7) + (4x – 9) + (5x + 6)

asked by Aimee on February 22, 2007
34. ## Science/Math

You put 50 mL of water in a graduated cylinder, then you place an object in the water. The level rises to 55 mL. What is the volume of the object?

asked by Mary on October 16, 2016
35. ## Pre-cal

Please determine the following limit if they exist. If the limit doe not exist put DNE. lim 2x^3 / x^2 + 10x - 12 x->infinity. Thanks.

asked by Randy on May 10, 2010
36. ## geometry

it cost \$350 to carpet an 8ft. by 10 ft room. at this rate, how many dollars would it cost to put the same carpeting in a 24 ft. by 30 ft. room?

asked by cate on March 29, 2012
37. ## work/science

A 6.2 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.41 m above the counter?

asked by ashley on September 3, 2010
38. ## MATH

How do I put these into equations? Five times the difference of a number and two is seven more than that number. Twice a number decreased by two is equivalent to than number increased by five. I am so lost

asked by Anesha on March 26, 2019
39. ## science

A 4.3 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.43 m above the counter?

asked by Anna on September 24, 2011
40. ## physical science

A 6.2 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.41 m above the counter

asked by ashley on September 4, 2010
41. ## chemistry

What can we use to put out a fire that involves sodium or any alkali metals. I know we can't use water as sodium reacts violently with water, then what else can we use?

asked by Javal on November 20, 2010
42. ## Math

How do you order these fractions least to the greatest, 4/7, 1/2, 3/5, 2/3? can you put this number in least to greatest: 5/12,13/36,7/18,5/6 It doesn't help when someone else does your work for you. Please let us know what YOU think the order is, and

asked by Judyth on May 17, 2007
43. ## science

A 6.2 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.41 m above the counter?

asked by ashley on September 3, 2010
44. ## Organic chemistry

What is the IUPAC name for--- phenyl(group)-c=o-o-ch2-ch2-ch3 ???? I put phenyl propanoate as my answer, but that was incorrect.

asked by Alphaa on October 12, 2011
45. ## Physics

Which of the following are the correct units for mass? Tons, u, g, slugs, dyn, lb, oz, kg I put g, slugs, and kg but got it wrong. What part do I have wrong?

asked by Sandra on September 28, 2014
46. ## dt -

it is for dt food .sorry i should have put it was food technology

asked by louise on September 30, 2008
47. ## math

(y-2)(y+2)(y^2+4) Should I put the answer as y^4-16 or (y^2+4)(y^2-4)? (x^3m-t^5n)^2 Answer: x^6m-t^10n

asked by anonymous on August 21, 2008
48. ## Anatomy Check Asap !

1) If a person has neither of the two blood antigens, what is his or her blood type? A B O AB (i chose o) 4) Testosterone is produced in the? testes bulbourethral glands prostate glands seminal vesticles (i chose seminal vesticles) 6. What type of cell is

asked by OMG on December 3, 2014
49. ## CHEM HELPP!!!

Imagine that you are in chemistry lab and need to make 1.00 of a solution with a pH of 2.50. You have in front of you 100 of 7.00×10−2 , HCL 100 of 5.00×10−2 , and NaOH plenty of distilled water. You start to add HCL to a beaker of water when someone

asked by Ashley on March 10, 2009
50. ## Chemistry

If the percent (mass/mass) for a solute is 6% and the mass of the solution is 300 g., what is the mass of solute in solution?

asked by Lori on March 14, 2016
51. ## Honors Chemistry

If the percent (mass/mass) for a solute is 20% and the mass of the solution is 300 g, what is the mass of the solute in solution?

asked by Emily on May 25, 2010
52. ## calculus help

Farmer Brown wants to fence in a rectangular plot in a large field, using a straight rock wall that is already there as the north boundary. The fencing for the east and west sides of the plot will cost \$3 a yard, but she needs to use special fencing, which

asked by Chris on April 25, 2014
53. ## critical thinking

identify and classify the different fallacReprinted from "Animals Hold the Key to Saving Human Lives," Los Angeles Times, February 5, 1996, by permission of the author. Dr. Joseph E. Murray, a Nobel laureate, performed the first human kidney transplant in

asked by barbara on January 27, 2010
54. ## Chemistry

Magnesium sulfate is often used it first aid hot-packs giving off heat when dissolved in water. When 2.00 g of MgSO4 dissolves in 15.0 mL of water (d= 1.00g/mL) at 25.0ºC, 1.51 kJ of heat is evolved. A) Write the balanced equation for this reaction. I

asked by Chris on January 28, 2007
55. ## chem

A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid, but because of security concerns, the actual chemical

asked by help! on February 16, 2009
56. ## AP CHEMISTRY HELP

a) A student fails to wash the weighing paper when transferring the KHP sample into the beaker. What effect does this error have on the calculated molarity of the NAOH solution? Mathematically justify your answer. b) A student failed to notice an air

asked by Amber on December 20, 2012
57. ## Chemistry

A sample of the compound prepared in this experiment, weighing .1021g, is dissolved in HNO3 and diluted to a volume of 100mL. A 10mL aliquot of that solution is mixed with 10mL 6 M NH3. The [Cu(NH3)4 2+] in the resulting solution is 5.16x10^-3 M. How many

asked by annie on October 23, 2012
58. ## Chemistry

IN the polystyrene beaker, mix 20mL of 0.1 M Acetic acid and 25mL of 0.1M Sodium Acetate and immediately measure the pH. Remove the electrode and add 5ml of 0.1 M HCl to this buffer. Stir the solution and measure the pH. _______________ INFO: concentration

asked by Saira on March 28, 2010

Why does a clear, saturated solution of PbI2 form a yellow precipitate when a small amount of KI is added to the solution? A. KI is insoluble in PbI2. B. PbI2 is always insoluble in water. C. Adding KI is like adding I-, which drives the reaction toward

asked by Laura on September 19, 2016
60. ## chem 2

solution is made by adding 0.100 mole of ethyl ether to 0.350 mole of ethyl alcohol. If the vapor pressure of ethyl ether and ethyl alcohol at 20°C are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20°C (assuming ideal

asked by Anonymous on September 16, 2014
61. ## English

I forgot to include the following sentences. I really hope you can have a look at them. 1)He asks his pupils for her name and she replies her name is Sissy Jupe. In his opinion that isn't a name. 2) He objects first to her name, which must really be

asked by Franco on January 31, 2011
62. ## biology (confused)

Hi Will someone please check my answers. I went to biology-forums(dot)com and registered but i really don't know how to post my questions and i really need help (with the questions). Thanks in advance. 1. Which process involves both passive and active

asked by Angela on February 9, 2013
63. ## bill of rights

im having trouble with these questions...i need to know what ammendment fits the statement... 1. A united states representative prohibited a local newspaper from printing an editorial that was critical of her record. 2. Congress told the state of Montana

asked by logan on March 2, 2007
64. ## Writing Skills

Which of the following groups of words is a sentence fragment? A. when we stopped by the garden. B. Stop by the garden. C. We stopped; she didn't. D. stopping by the garden, we saw that the flowers were in bloom A sentence fragment doesn't express a

asked by Karin on August 29, 2005
65. ## Chemistry

An unknown compound contains only carbon, hydrogen, and oxygen. Combustion analysis of the compound gives mass percents of 31.57% Carbon and 5.30% H. The molar mass is determined by measuring the freezing-point depression of an aqueous solution. A freezing

asked by James on February 24, 2015
66. ## chemistry

Calculate the change in pH when 6.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). Calculate the change in pH when 6.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution.

asked by Katie on February 5, 2012
67. ## chemistry

Calculate the change in pH when 6.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). Calculate the change in pH when 6.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution.

asked by Katie on February 4, 2012
68. ## chemistry

Calculate the change in pH when 9.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). Calculate the change in pH when 9.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution.

asked by james on March 9, 2016
69. ## CHEMISTRY

a) Calculate the change in pH when 4.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). b) Calculate the change in pH when 4.00 mL of 0.100 M NaOH(aq) is added to the original buffer

asked by Jematormal91 on March 27, 2012
70. ## Biology

bio 1003 lab notes baruch Experimental setup 1 contains live, germinating pea seeds. Experimental setup 2 contains germinated then boiled pea seeds. Experimental setup 3 contains dry pea seeds that have not begun to germinate. Experimental setup 4 is a

asked by Melissa on September 7, 2009
71. ## pre algebra

1. Solve the equation. –9v – 5 = –95 (1 point) 17 11 10 –10 2. Solve the equation. x over four – 5 = –8 (1 point) –27 –12 –7 12 3. Solve the equation. p over five + 6 = 10 (1 point) 44 30 20 –20 4. Solve the equation. –2(m – 30) =

72. ## Algebra 2

The dimensions in inches of a shipping box can be expressed as width x, length x + 1, and height x - 4. The volume is 84 ft^3. Find the dimensions of the box in feet. 1, 1, 4 2, 2, 21 2, 6, 7 3, 4, 7 Please help? If somebody can help put this into an

Solar System Project: I would like to know if the moon is between earth and mars. I am making a shoe box model of the solar system. I have to put the planets in order. That's all I need to know. Thanks a bunch!!!

asked by Miranda on January 18, 2010
74. ## math

Luis put \$800 in his saving account whichs pays 6% annual interest How much will he have in his account in a year if the interest is compounded quarterly? what is the first quarter principle?

asked by carolyn on December 9, 2010
75. ## Math Arc Length

Find the arc length corresponding to an angle of a degrees on a circle radius of 4.9 Enter the exact answer. I put the arc length was 4.9api/180 got it wrong. Any help?

asked by Taylor on October 31, 2014
76. ## composition and communication1

Can somebody please help me write 150 words on feedback from writpoint I"ve got this so far I think the feedback from writpoint was very helpful to me because it explains to me what i did wrong and how to fix my mistakes. It also tells where to put correct

asked by carrie on June 27, 2011
77. ## Chemistry

Put in order from strongest to weakest: London Dispersion Forces, Hydrogen Bonds, Dipole-dipole interactions, ionic bonding, and covalent bonding.

asked by Lelia on February 8, 2010
78. ## calculus

Find the equation of the tangent line to the curve y=sqrt(x) at x = c. Put the answer in slope intercept form y=mx+b. Use the definition of the slope of the tangent with no short cuts.

asked by jon on January 31, 2012
79. ## math

Helga's summer job put her in charge of the local soccer and basketball programs. To get ready, she ordered 50 balls, making sure there were 10 more soccer balls than basketballs.

asked by isabella on September 7, 2016
80. ## Algebra II

Sierra planted a 12ft. by 10ft. flower garden in her backyard. She put a gravel walkway of uniform width around it. How wide was the walkway if she used 168ft^2 of gravel?

asked by Logan on October 31, 2017
81. ## Physics

A train slows from 25m/s to 14m/s in 5.0s. Calculate the work done on the train....so I calculted the displacement and the force and put them together to get an answer of 5.0 x 10^7J, but my textbook says it should be 1.1 x 10^7J? Am I right, or is the

asked by Alexis on October 14, 2007
82. ## Math, Algebra I

A Parent sets up a bank account with \$4000. The bank pays 8% interest. The Parent will put in \$3000 every year till the child turns 18. I need the equation.

asked by Yun on January 27, 2012

I need help on how to write a mixed number as a fraction 4 9/17 77/17 multiply 17 times 4 + 9. then put the # u get on top and keep the bottom # Thanks Mike 4 9/17 is the same as (17*4 + 9 )/17 where * means times. thanks erny 11 9+4=13 so 17 13 ---- 221

asked by Lyberty on November 15, 2006
84. ## CALCULUS

Use a graphing calculator to solve the equation -3 cos t = 1 in the interval from 0 ≤ θ ≤ 2π Round to the nearest hundredth. so i put it in a graphing calculator online and now i understand what i am supposed to write or do can someone please help

asked by hello :) on February 4, 2019
85. ## Math

The directions For lemonade say to put 2 cups of the liquid concentrate into 1 gallon of water if Olivia only wants to make 1 pint of lemonade how many fluid ounces of concentrate would she use explain

asked by Anonymous on February 1, 2017
86. ## math

Given: ∆ABC is isosceles m∠ACB = 120° m∠BMC = 60° CM = 12 Find: AB M is on line segment AB I saw that someone has already post this question, but I didn't find the answer so I reposted it to c if someone could put the answer

asked by Serina on March 19, 2017
87. ## personal finance

in this problem: if you wanted to put aside \$2,000 a year for 10 years ginven a 10% rate of return (compounded monthly) Here, is it the 10 % every month, or the 10% is divided by 12 months of the year and then every month the % is 0.83%?

asked by susie on March 17, 2010
88. ## math

it takes 3weeks to build a large garage.if it takes 2/3 of a week to construct the frame and 5/4 of a week to put the roof on.how much time is spent on the rest of the construction?

asked by sarah on July 20, 2013
89. ## algebra

If you cut a piece of paper to form a triangle shape, and tear off the three corners of the triangle and then put the three corners together what will you see? Please describe. What mathematical truth does this activity illustrate?

asked by Lucy needs help now on February 12, 2012
90. ## Math

Which of these numbers is greater than 6 but less than 7? Let me try to figure it out and I'll post my anwser.= ) oops didn't put the options in... the square root of each of these numbers a. 6.5 b. 67 c. 45 d.76 Would it be easier to find the number which

asked by Holly = ) on March 15, 2007
91. ## English

If a writer wanted to put emphasis on the person doing an action, which of these statements would be the best choice? A) active voice B) passive voice C) subjunctive mood D) interrogative mood A?

asked by Maya on February 21, 2017
92. ## Physics

When you put water in a kitchen blender, it begins to travel in a 6-cm-radius circle at a speed of 2 m/s. How hard must the sides of the blender push inward on 0.004 kg of the spinning water?

asked by on April 15, 2013
93. ## Math

Suppose a quantity is halvd every 18 years. use the approximate half-life formula to estimate its decay rate. is the half life equation y= 1/2^t1/2 2^1/2t= 1/y t 1/2= log2 (1/y) Where do I put 18 at?

asked by Randi on December 4, 2009
94. ## Math(Urgent)

Compute the maximum product for two positive numbers x and y with the property that the sum of the first plus five times the second is 5000. 1) Indicate the objective equation 2) Indicate the constraint equation I put x+5y=5000. Is this correct.

asked by Hannah on February 27, 2011
95. ## math

The directions for lemonade say to put 2 cups of the liquid concentrate into 1 gallon of water. If Olivia only wants to make 1 pint of lemonade, how many fluid ounces of concentrate should she use? Explain.

asked by Phillip on March 4, 2015
96. ## calculus

I was doing calc hw and I am stuck on a part of a question. =(1/10)-(x/15sqrt(x^2-9)) I am supposed to put this equation equal to 0 and solve for x. The answer is 9/sqrt(5) but I don't understand how the answer comes out to be 9/sqrt(5). Please help. Thank

asked by cj on February 25, 2012
97. ## algebra

3x-5(3x-7)= 2(x+9) + 45 You won't learn unless you try these yourself. Multiply out the term in parentheses, combine the x terms together and the constants together, and then put all the x terms on one side of the = and the constants on the other. Show

asked by Anonymous on April 24, 2007
98. ## Spanish

Which theory was developed based on observations made on the Galapagos Islands? a. big bang b. natural selection*** c. relativity d. planetary motion Where is the best place to put the adjective "perezoso" in the following sentence? Diego(1) es(2) un(3)

asked by Kaai97 on October 9, 2015
99. ## English - Ms. Sue

Ms. Sue having loads of trouble here could you please help me? Actually Mohammad and I just went on the site Animoto and it won't let us put full sentences. Maximum letter count is 30. Exactly how do I shorten this sentence? Jake draws himself away from

asked by Aaron on February 21, 2012
100. ## chem equations

could someone tell me how i could solve this chem equation CH4 + NH3 +O2...> HCN +H20 AND USE THE LOWEST WHOLE NUMBER COEFFICIENT i WOULD BE GRATEFUL FOR ANY POINTERS Try these coefficients. 2,2,3==>2,6 Hi bex heres a little more help for you. Answer is

asked by bex on May 6, 2007