# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 240
1. ## physics

a person lifts a 4.3 kg centimeter block a vertical distance of 1.10m. and then carries the block horizontally a distance of 10.0m. How much work is done by the person? How much work is done by gravity?

asked by Kalynn on January 14, 2013
2. ## hr

Decision making is a process by which several possibilities are considered and prioritized, resulting in a clear choice of one option over others. Decision making is a fact of life personally and in business. We make dozens of decisions each day. Some

asked by yvonne on June 2, 2011
3. ## AP Chemistry

Assume that 30.0 mL of a 0.10 M solution of a weak base B that accepts one proton is titrated with a 0.10 M solution of a monoprotic strong acid HX. (a) How many moles of HX have been added at the equivalence point? (b) What is the predominant form of B at

asked by Sally Perez on March 8, 2010
4. ## Physics

If we examine a ball in free fall, we find that the momentum of the ball is not constant. This is not a violation of the law of conservation of momentum because A) the force of gravity acts on the ball. B) the ball experiences an external force. C) the

asked by Crystal on November 29, 2011
5. ## Chemistry

Hello I need help with this excersise: How many moles of NH4Cl are neccesary to add to 1 liter of solution of Co2+ 0,20 M in order to prevent the precipitation when the solution is saturated with H2S (0,1M) and the pH is 7,50. It 's known that pKbNH3=4,75

asked by Mary on September 2, 2016
6. ## math

Mrs. Mask looked at another hotel. She waited a week before she decided to book nights at that hotel, and now the prices have increased. The original price was \$1195. The price for the same room and same number of nights is now \$2075. What is the percent

asked by Someone who needs help with math on November 13, 2017
7. ## algebra

1.) The volume of a rectangular box is 64 ft3. If the width is 3 times longer than the height, and the length is 9 times longer than the height, find the dimensions of the box. Define your variables then show all work using the equation editor. Write a

asked by ashley on August 10, 2016
8. ## Physics

Let us assume that the muon production happens at an altitude of about 15 kilometers above the surface of the Earth, and that the produced muons have a velocity of 0.99 c. Thus, in the Earth system, it takes the muon approx. 50500 nanoseconds to reach the

asked by Tisha on April 24, 2011

Organizing work, enterprises, or societies. Topics based in this research area centre on the way work or societies are structured. This topic may be approach may assume a “best practices” approach or may be contextualized to consider organization for

asked by jiskhayg on September 21, 2014
10. ## HCA/220

I need help with a discussion question due in week 8. You work in a training and development department of a medical facility. You are asked to develop a training manual for a new employee with no medical terminology background. The new hire will work in

asked by chrissy on October 23, 2013
11. ## financial accounting

Zumbrunn Company’s income statement contained the condensed information below. ZUMBRUNN COMPANY Income Statement For the Year Ended December 31, 2015 Service revenue \$969,400 Operating expenses, excluding depreciation \$624,480 Depreciation expense 59,260

asked by ashley on April 26, 2017
12. ## Algebra I

Scott wants to make 6 gal of a 50% sugar solution by mixing together a 60% sugar solution and pure water. How much of each solution must he use? mixture 1 @ 60% = x gallons pure water = 100% - x (??? that's my question...is that correct? or is it 0?)

asked by Cale on February 22, 2017
13. ## derivatives

Applications of derivatives A rectangle has its base on the x axis and its upper two vertices on the parabola y=12 - x^2. What is the largest area the rectangle can have, and what are its dimensions. Support your answer graphically. Thanks. Well, the

asked by Jen on November 18, 2006
14. ## Algebra 2

Two woodworkers, Tom and Carlos, bring in \$100 for making a table and \$80 for making a chair. On average, Tom must work 3 hours and Carlos 2 hours to make a chair. Tom must work 2 hours and Carlos 6 hours to make a table. If neither wishes to work more

asked by Amy on September 28, 2014
15. ## Finite with Calculus Applications

The Ball Company manufactures three types of lamps, labeled A,B,and C. Each lamp is processed in two departments, I and II. Total available work-hours per day for departments I and II are 400 and 600, respectively. No additional labor is available. Time

asked by Andre on February 27, 2012
16. ## med math

the pharmacy sends you a vial of 1.5 grams of ampicllin. The instructions state to mix the powders with 9.8ml of sterile water to make a solution of 1.5grams/ 10ml. How much solution would you draw to administer 750mg of ampicillin? Attempt: (750mg X

asked by saya on January 20, 2017
17. ## chemistry

When filling the buret with NaOH solution, you left an air bubble in the buret tip. The bubble was released durning your first KHP titration. Would the following technique error result in an erroneously high or reeoneously low calculated molarity of NaOH

asked by Diane on February 22, 2010
18. ## Chemistry

A reaction is peformed in which 50 ml of .400M silver nitrate and 75 ml of .100M hydrochloric acid are mixed together. The initial temperature of the solutionn was 25 C and the final temperature was 27.2 C. What is the enthalpy, in kj/mol, for the

asked by Lydia on November 18, 2012
19. ## Chemistry

Are these reactions Exothermic or Endothermic? How do I know? 1.) Mg(OH)2(s)Mg+2(aq) + 2OH-(aq) Saw solution lighten from medium pink to very light when heated in hot water bath. (It had phenolphthalein drop for indicator.) 2.) HSO4-(aq)+

asked by Ann on July 11, 2013
20. ## Chemistry

25cm3 Of 3g Of Hydrated Sodium Trioxocarbonate(iv) Solution (NaCO3XH2O)Per 250cm3 Was Neutralized By 13.20cm3 Of 0.16m Hydrochloric Acid Solution. Write The Equation For The Reaction. Calculate The Conc Of Base In Mol/dm3. Calculate The Molar Mass Of The

asked by Loveth on October 11, 2016
21. ## Chemistry

25cm3 Of 3g Of Hydrated Sodium Trioxocarbonate (iv) Solution (NaCO3XH2O)per 250cm3 Was Neutralized By 13.20cm3 Of 0.16m Hydrochloric Acid Solution. 1) Write The Equation For The Reaction. 2) Calculate The Conc Of The Base In Mol/dm3. 3) Calculate The Molar

asked by Loveth on October 11, 2016
22. ## physics

A golfer hits a ball from the origin with an initial speed of 35 m/s at an angle of 44 degrees above the horizontal axis. The ball is moving down when it lands on a green that is 3.00 m above the level where it was struck. Neglect air resistance. 1. How

asked by Amy on May 25, 2011
23. ## L'Hopitals Rule

5) Use the L’Hopital’s method to evaluate the following limits. In each case, indicate what type of limit it is ( 0/0, ∞/∞, or 0∙∞) lim x→2 sin(x^2−4)/(x−2) = lim x→+∞ ln(x−3)/(x−5) = lim x→pi/4 (x−pi/4)tan(2x) =

asked by Jane on December 7, 2014
24. ## Calculus

Use Newton's method to approximate a root of the equation (2 x^3 + 4 x + 4 =0) as follows. Let (x_1 = -1\) be the initial approximation. The second approximation (x_2) is ? and the third approximation (x_3) is ?

asked by Salman on November 11, 2009
25. ## Chemistry

7.5 g of a solid are added to 87.6g of water at 23.7 degrees C. When the solid has all been dissolved and thoroughly mixed with the water, the temperature of the solution is decreased by 6.2 degrees C. Calculate the heat of the solution in joules per gram

asked by Anonymous on July 15, 2008
26. ## Chemistry

A)What mass of silver chloride can be produced from 1.33 of a 0.207 solution of silver nitrate? I got this one, its 39.4 g B)The reaction described in Part A required 3.28 of potassium chloride. What is the concentration of this potassium chloride

asked by Kristi on October 14, 2011
27. ## Physics

A)What mass of silver chloride can be produced from 1.33 of a 0.207 solution of silver nitrate? I got this one, its 39.4 g B)The reaction described in Part A required 3.28 of potassium chloride. What is the concentration of this potassium chloride

asked by Kristi on October 14, 2011
28. ## science(chem)

How would I make a 5% solution of sodium bisulfite? sodium bisulfite: NaHSO3 Molar mass: 104.06 g/mol is it 5% w/w or v/v or w/v b/c if it was w/w then it would be weight percent w/w= weight solute/ weight solution* 100 I need help on this Thanks

asked by ~christina~ on November 4, 2007
29. ## Chemistry

Would you store a solution of zinc nitrate in an aluminum container? Use half-reactions to explain your answer. Al ==> Al^+3 + 3e Zn ==> Zn^+2 + 2e Look up the above half reactions and you will see that the Al will go into solution and the Zn+2 will come

asked by J.M. on January 21, 2007
30. ## chemistry

assume you had a solution that contained a mixture of a silver ions and stronium ions. come up with three different reaction plans that would allow you to precipitat either the silver ion or strontium ion, but the other ion would remain in solution

asked by Colby on December 1, 2011
31. ## chemistry

What does a buffer do? A. It resists a change in pH when H+ or OH- is added to a solution. B. It prevents an acid-base reaction from happening. C. It prevents an acid or base from being neutralized. D. It prevents a salt from forming in solution.

asked by jessie on September 12, 2016
32. ## Physics, Calculus(alot of stuff together)= HELP!!!

~it was bumped over to the next page so I recopied it and added my answer for the question and was wondering if my integration was correct since you said DrWls:I forgot t use the expression B + Cx for p, and used A + Bx instead. The method of solution is

asked by ~christina~ on September 16, 2007
33. ## Language Arts Help me!!

Think about the work you completed in your reading character role. Determine the ideas that would be most worthy to share in a literary discussion about Johnny Tremain. Provide an explanation for your choices. How did the role you selected and the work you

asked by Yes once again another emo girl! That like My chemical Romance!!!!!! </3 on January 23, 2018
34. ## Chemistry - Le Chatelier's principle(help)

Le Chatelier's principle states that " a dynamic equilibrium tends to respond as to relieve the effect of any change in the conditions that affect the equilibrium." I understand the above, now i am trying to predict the response of the system and i am

asked by Babelii on March 22, 2011
35. ## That darn physics again

Hi! i need some help with this ASAP! a body is projected upwards from a point on level ground with a velocity of 45 m/s at an elevation of 30 degrees. Working from the expression for uniformly accelerated motion in a straight line, determine 1) the time of

asked by sean on October 8, 2006
36. ## algebra/geometry

The Binary Ice Cream Shoppe sells two flavors, vanilla and chocolate. On Friday, the ratio of vanilla cones sold to chocolate sold was 2:3. if the store had sold 4 more vanilla cones, the ratio of the vanilla cones sold to chocolate cones sold would have

asked by abby on April 15, 2008
37. ## English

Can you check if there's grammar mistakes in this monologue, if there is, can you correct it for me. Hi, I'm William Shakespeare. I had disappeared from the records for seven years. Many rumors flew around, including that I liked to poach. They say I had

asked by Tommy on February 17, 2014
38. ## english

write whether the words in parentheses show compound subject(CS), compound verb(CV),or independent clauses (IC). 1)Latisha (called me after school)IC ,and (asked for help with her project) IC. 2)(I met her at the library), IC and (we went over the

asked by joseph on April 23, 2012
39. ## science

Question: what do you think will happen to the rate of reaction if the concentration of enzyme is increased to five drops?Predict what thte rate would be for 5 drops. Answer:Roughly, the rate doubles when the concentration of enzyme doubles. Since the data

asked by sammi on October 3, 2009
40. ## Math

How do I solve this? tan^2x= 2tanxsinx My work so far: tan^2x - 2tanxsinx=0 tanx(tanx - 2sinx)=0 Then the solutions are: TanX=0 and sinX/cosX = 2 sin X Divide through by sinX: we have to check this later to see if allowed (ie sinX is not zero) cosX=1/2

asked by Chris on January 7, 2007
41. ## Chemistry

A 0.1873 g sample of a pure, solid acid, H2X was dissolved in water and titrated with 0.1052 M NaOH solution. The balanced equation for the neutralization reaction occurring is H2X(aq) + 2NaOH(aq) ¨ Na2X(aq) + 2H2O(l) If the molar mass of H2X is 85.00

asked by Lauren on May 11, 2011
42. ## Chemistry

Mean titre of 0.2M sodium thiosulphate = 32.2 ml 1) Calculate number of moles of S2O32- which react in the titration 2)Calculate how many moles of I2 react with this amount of S2O3 3)How many Cu2+ ions are needed to liberate this amount of I2? Use this

asked by Chirag on January 5, 2017
43. ## algebra1

I will be happy to critique your thinking. can u use one of them and show me how to solve it and i'll do the rest? like i don't know how to do these and i need to know how. assume that Q varied directly as x and inversely as y. 1) if x is tripled and y is

asked by bobpursley on May 23, 2007
44. ## chemistry

A nitric acid solution containing 71.0% by mass of the acid has a density of 1.42g/ml how many grams of nitric acid are present in 1.0L of this solution

asked by cheryl on May 3, 2013
45. ## Science

Rubbing alcohol is a solution of 70 percent alcohol and 30 percent water. In the alcohol solution, which is the solute and which is the solvent? Explain.

asked by Amber-NEED HELP!!! on May 7, 2008
46. ## chem

1 molar solution of Pb(NO3)2 you want 3mL of 0.5 Molar Pb(NO3)2 how much of the one molar solution do you mix with H2O to reach your goal

asked by bob on May 27, 2010
47. ## MATH

Suppose that you have a supply of a 25% solution of alcohol and a 75% solution of alcohol. How many quarts of each should be mixed to produce 100 quarts that is 30% alcohol?

asked by JOE on September 11, 2010
48. ## Heath

1. Which digestive organ is the last organ food passes through before reaching your stomach? (1 point) pharynx epiglottis esophagus mouth 2. Starches and sugars belong to which class of nutrients? (1 point) carbohydrates fats proteins enzymes 3. A method

asked by Help on November 11, 2016
49. ## chemistry

how to balance this equation by using electron ion method 1. C2O4(-2 charge)+ MnO4(- charge) + H(+)-----> CO2 +Mn(+2 charge)

asked by humaira on April 17, 2009
50. ## Calculus - Integrals

I have 3 questions, and I cannot find method that actually solves them. 1) Integral [(4s+4)/([s^2+1]*([S-1]^3))] 2) Integral [ 2*sqrt[(1+cosx)/2]] 3) Integral [ 20*(sec(x))^4 Thanks in advance.

asked by David on March 24, 2008
51. ## math

Find the amount of interest on a loan of \$10,500, at 9% interest, for 124 days using the exact interest method.

asked by Brenda on December 13, 2015
52. ## calculus

Use Newton's method to approximate a root of the equation 3sin(x)=x as follows. Let x1=1 be the initial approximation. The second approximation x2 is and the third approximation x3 is for x2 I got -1.454 which is right but I can't get x3

asked by HELLLLLPPPPP on September 8, 2010
53. ## Math

Find the amount of the principal on a loan at 6% interest for 274 days if the interest was \$68.50, using the ordinary interest method.

asked by Krystle on June 23, 2013
54. ## calculus

Use Newton's method to approximate a root of the equation 3sin(x)=x as follows. Let x1=1 be the initial approximation. The second approximation x2 is and the third approximation x3 is I got x2=-1.454 but can't get x3 :(

asked by HELLLLLPPPPPPP on September 8, 2010
55. ## Calculus - Integrals

I have 3 questions, and I cannot find method that actually solves them. 1) Integral [(4s+4)/([s^2+1]*([S-1]^3))] 2) Integral [ 2*sqrt[(1+cosx)/2]] 3) Integral [ 20*(sec(x))^4 Thanks in advance.

asked by David on March 23, 2008
56. ## Math

Hello. I have a math question that I truly need some help on please. Why do many of the graphs of real-world proportional relationships (such as distance to time) show the first quadrant but omit the other three quadrants? I have to do a fill in the blank

asked by Patrick on September 12, 2018
57. ## CHEMISTRY

Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br- and C9H7N is quinoline, an organic base with pKb = 6.24 at 298 K. If you like, you may

58. ## CHEMISTRY

1. Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br− and C9H7N is quinoline, an organic base with pKb = 6.24 at 298 K. If you like, you may

59. ## CHEMISTRY

Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br- and C9H7N is quinoline, an organic base with pKb = 6.24 at 298 K. If you like, you may

60. ## CHEMISTRY

1. Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br− and C9H7N is quinoline, an organic base with pKb = 6.24 at 298 K. If you like, you may

asked by sabrina: who can help? on November 28, 2012
61. ## Physics

Two 30kg children in a 20 kg cart are stationary at the top of a hill. They start rolling down the 80m tall hill and they are traveling at 30 km h-1 when they reach the bottom. (The cart had brakes!) How much work was done on the cart by friction during

asked by Ellie on September 21, 2012
62. ## Math

Hey guys this is a precalculus honors question and im stuck, appreciate it if i could get your help. Lauri is a sea level and uses surveying equipment to sight the top of Mount Tam. The angle of elevation to the top is 22 degrees 10 minutes. She moves 1000

asked by Henry on September 9, 2012

solve the following for x. 1)e^x^2-x=e^2 x^2-x = 2 I am not sure what to do now 2) e^-5x * e^4 = e -5x + 4 = 1 x= 3/5 3) Suppose that the price p (in dollars) and the demand in x(thousands) of a commodity satisfy the demand equation 6p + x + xp =94. How

asked by Hannah on May 1, 2011
64. ## chem

(b) (4 pts.) Suppose it is a hot summer day (40.0 degrees C = 104.0 degrees F), and you have left a can of hairspray outside so the gas within it is now at the same temperature of its surroundings. As part of your chemistry lab class, you have to build a

asked by Anonymous on March 23, 2013
65. ## chemsitry

Consider the diprotic acid H2A with K1 1*10^-3 and K2= 1*10^-9 . Find pH, [H2A], [HA], and [A2-] for a .2000M solution of H2A b)Find pH, [H2A], [HA], and [A2-] for a .200M solution of HA- c) Find pH, [H2A], [HA], and [A2-] for a .200M solution of A-

asked by Jessica on April 7, 2013
66. ## mathematics for accounting

the question is the formula use in calculating depreciation that is reducing balance method which is (1-n√s/c)×100/1 now we were asked to now make each of n,s,and c in the formula the subject of the formula

asked by david on May 4, 2016
67. ## writing

I need a sentance with the word malign MALIGN is a parsimony-based alignment method for sequences. Don't malign me with more of your vicious rumors.

asked by yitty on December 3, 2006
68. ## 3rd math

The flower shop just received a shipment of 432 roses. They need to fill an order for 273 roses. Use any method to how many roses they will have left.

asked by morgan on September 20, 2012
69. ## math

Can you bisect a acute angle, right angle, or obtuse angle using each method: paper folding, a transparent mirror, and a compass and ruler? why or why not?

asked by vanessa on May 18, 2010
70. ## statistics

draw a simple random sample of 15 students from your class,and calculate sample mean and sample variance of their heights(use lottery method)

asked by sireesha on June 2, 2011
71. ## math

the question is the formula use in calculating depreciation that is reducing balance method which is (1-n√s/c)×100/1 now we were asked to now make each of n,s,and c in the formula the subject of the formula please help me

asked by Anonymous on May 4, 2016
72. ## physics help

A 1100 kg automobile is at rest at a traffic signal. At the instant the light turns green, the automobile starts to move with a constant acceleration of 3.0 m/s2. At the same instant a 2800 kg truck, traveling at a constant speed of 8.0 m/s, overtakes and

asked by beav on March 26, 2010
73. ## AP Chemistry

(a) When 300.0 milliliters of a solution of 0.200 molar AgNO3 is mixed with 100.0 milliliters of a 0.0500 molar CaCl2 solution, what is the concentration of silver ion after the reaction has gone to completion? (b)Write the net cell reaction for a cell

asked by Jessica on April 5, 2010
74. ## Chemistry

So my chem experiment asks us: What is the molarity of a 6.0 ppm solution (it's a 6.0 ppm chlorophyll solution, hexane is the solvent) Now, I've found a few ways to solve for it but they both give me different values. If it's possible, could you just tell

asked by Just One Stranger on December 6, 2012
75. ## History

I am home schooled and I am suppose to ask people their ideas on how to solve the Social Security problem. It says in my book the population of working Americans is not growing quickly enough to fund continued increases in Social Security spending. At some

asked by Meghan on September 11, 2014
76. ## Math-Algebra

(Engineering) The current / varies as the electromotive force E and inversely as the resistance R. If in a system, a current of 20A flows through a resistance of 20 ohms with an electromotive force of 100V, find the currect that 150V will send throu+gh the

asked by McKenna Louise on December 18, 2013
77. ## Epidemiology

Which of the following six study design types most appropriately characterizes the studies described below (#1-6)? DESIGN TYPES a. Cross-sectional b. Case-control c. Prospective cohort d. Retrospective (historical) cohort e. Clinical trial f. Community

asked by DANIELLE on April 6, 2008
78. ## Solving inequality Test 29 questions

1. Which number is a solution of the inequality G > 6.4 2. Which number is a solution of the inequality y+2>8 3. which number is A solution of the inequality 6>z(10-z) 4. Choose the correct solution and graph for the inequality y-5≤-8 5. Choose the

asked by Jason Roberj1 on December 8, 2016
79. ## Chemistry

A base has a Kb of 2.5 x 10–11. Which of the following statements is true? A.This is a concentrated base. B.This base ionizes slightly in aqueous solution. C.This is a strong base. D.An aqueous solution of this base would be acidic. My answer is D...?

asked by Cassie on February 12, 2013
80. ## Economics

Women are less likely to be member of labor unions because: A. Fewer women work in blue collar unionized industries. B. Women are less likely to pay union dues. C. More women work in agency shop situations. D. Women earn about 60 percent of what men earn

asked by Dianara on April 29, 2009
81. ## Trigonometry

Solve for x to the nearest hundreth and can you explain how you get your answer I don't understand 3^x = 1.295 Your question has nothing to do with trigonometry. You can solve for x by taking the logarithm (to any base) of both sides of the equation. Then

asked by Linda on June 10, 2007
82. ## Algebra: Help Please

For the given function, compute the missing values in the following table. f(x) = 8x i got the negatives wrong, but I know how to solve for it. Is there a reason it is wrong? -3: -1/512 -2: -1/64 -1: -1/8 (^These were wrong, but I don't know how to solve

asked by Ann on February 23, 2012
83. ## MATHS

Solve the following equations if 0

asked by T_om on April 11, 2007
84. ## Chemistry

A rock is 5.0% by mass fayolite(Fe2SiO4), 7.0% by mass forsterite(Mg2SiO4) and the remainder silicon dioxide. What is the mass percent of each element in the rock? I have the answers but i don't know how to solve the problem. How would you in steps solve

asked by ALISON on August 31, 2011
85. ## Algebra II

Solve the following word problem. The length and width of a rectangle are (x + 4) cm and x cm. Respectively, a square has the same perimeter as this rectangle. If you add the areas of the rectangle and the square, the result is 94cm^2. Solve for x. Note:

asked by Anonymous on December 8, 2016
86. ## CHEMISTRY:))))

A rock is 5.0% by mass fayolite(Fe2SiO4), 7.0% by mass forsterite(Mg2SiO4) and the remainder silicon dioxide. What is the mass percent of each element in the rock? I have the answers but i don't know how to solve the problem. How would you in steps solve

asked by ALISON on September 1, 2011
87. ## Love Vs. Infatuation Essay please proofread

Please check my essay and could you please give me a letter grade. I am in 9th grade and we are supposed to write 4 paragraphs on similarites and differences between love and infatuation. Love Vs. Infatuation "Infatuation might lead you to do things you

asked by Terrie on April 7, 2009
88. ## chemistry

a) What is fellesioneffekten?   Veronal is a barbiturate (structure see above). Barbiturates is a substance class which occur in a variety of drug classes, including sleep medications (hypnotikasedativa), in painkillers (anesthetics) and anticonvulsants.

asked by Maria on September 9, 2016
89. ## Chemistry lab

A 1.340gram sample of an unknown acid, H3A, was placed in a 250.0 mL volumetric flask and diluted to volume with water. A 45.35 mL sample of this acid solution was titrated with 37.77 mL of a 0.1006M NaOH solution. A) Using one set - up dimensional

asked by Stacy on March 22, 2016
90. ## Chemistry 3

How is it possible for me to tell which of these solutes will produce an acidic solution when dissolved in water? LiOH CH3CO2K H2SO3 KOH NaOH NH4NO3 NaOH NaOH can't be the only one... Molecules that produce OH^- when dissolved in water will be basic.

asked by Lindsay on May 24, 2007
91. ## Algebra

A chemist has two solutions of sulfuric acid. The first is one half sulfuric acid and half water. The second is three-fourths sulfuric acid and one fourths water. He wishes to make 10 liters of a solution which is two-thirds sulfuric acid and one-thirds

asked by Jane on November 10, 2013
92. ## physics

The current indoor world record time in the 200-m race is 19.92 s, held by Frank Fredericks of Namibia (1996), while the indoor record time in the one-mile race is 228.5 s, held by Hicham El Guerrouj of Morroco (1997). (a) Find the mean speed in meters per

asked by Darcie on March 11, 2012
93. ## MATH

The Captain of a freighter 8km fromthe nearer of two unloading docks on the shore finds that the angle between the lines of sight to the docks is 35 degrees. if the docks are 10km apart, how far is the tanker from the farther dock? The Captain of a

asked by T on May 24, 2008
94. ## Math

The Captain of a freighter 8km fromthe nearer of two unloading docks on the shore finds that the angle between the lines of sight to the docks is 35 degrees. if the docks are 10km apart, how far is the tanker from the farther dock? The Captain of a

asked by Tareena-- check my answer please on May 24, 2008
95. ## Algebra

1. A two digit number is three less than seven times the sum of its digits. if the digits are reversed, the new number is 18 less than the original number. what is the new number? 2. The numerator a fraction is 3 less than the denominator. If 5 is added to

asked by Ashley Kate on January 9, 2014
96. ## English

This is a chemistry lab report, but I was wondering if someone could edit the grammar and look at the sentence structure, etc. I know it's really long and boring, but even if you just look over a bit of it, I would really appreciate it. And I'm assuming

asked by a Canadian on February 21, 2013
97. ## Pre-Calculus

Not sure what to solve... I tried to solve it but i ended up proving that it worked. a. Find the equations of the tangents at C (-2,1) and D (1,2) on the circle x^2+y^2=5 b. Find the point of intersection of the tangents. ~What I did was find the slope and

asked by Anonymous on October 4, 2015
98. ## ALGEBRA

Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s). The length of a rectangle is 3 times the width. The difference between the length and the width is

asked by ALISON15 on July 5, 2012
99. ## physics

1) What average power is required for a runner with a mass of 85 kg to reach a speed of 8 m/s from a stationary start during a time of 2 s? 2) A 1000 kg car travels east at 30 m/s and collides with a 3400 kg truck travelling south at 20 m/s. After the

asked by k on March 29, 2015