# 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 692-
## dna strands/sequences

The restriction enzyme EcoR1 recognizes the DNA sequence GAATTC. Which DNA strands will be cut by EcoR1? I. TTCAGGAATTCGGAAACC AAGTCCTTAAGCCTTTGG II. TGAATCGAACCTG ACTTAGCTTGGAC III. TTAAGCGGCCGAATTCAGTCCA AATTCGCCCGCTTAAGTCAGGT IV. CAGTAGGATTTCTGTGTC

*asked by notasciencegal on October 22, 2006* -
## chemistry

To prepare the titrant fo amonia nitrogen analysis an analyst weight out 1.20 grams of concentration 98% sulfuric acid and brings to 1000 ml in lab pure water. if the molecular weight is 98 calculate the normality of the solution this analyst has prepare.

*asked by Faye on March 26, 2011* -
## Qualitative analysis

X is a solution containing both sodium chloride and sodium sulfate. Three of the following solutions will produce a white precipitate on addition of X. Which one remains clear? A) Aqueous ammonia C) Lead(ll) nitrate B) Barium chloride D) Silver nitrate

*asked by Cheezel on November 17, 2016* -
## Physics

When the rubber band in a slingshot is stretched, it obeys Hooke's law. Suppose that the "spring constant" for the rubber band is k = 53 N/m. When the rubber band is pulled back with a force of 7.3 N, how far does it stretch? F=kx solve for x.

*asked by Mary on March 29, 2007* -
## math: permutations

Hi, I need your help. I just cant figure out how to solve this problem. Question: There are two rows of chairs. The first row has two chairs and the second row has four chairs. In how many ways can six people be seated if a couple from the group must sit

*asked by Aina on July 24, 2016* -
## pre algebra

Mr Chee deposited $80 into his checking account. Then, after writing a $23 check for gas and a $90 check for his child's day care, the balance in his account was $67. How much was in his account before he made the deposit? How would you solve and check the

*asked by Amber shall on February 1, 2011* -
## World History (Ms. Sue)

Which country do you think had a stronger democracy at the end of the nineteenth century, France or England? Why? A: I think England had a stronger democracy at the end of the nineteenth century. By 1870, England, or Great Britain, had long had a working

*asked by Victoria on October 20, 2014* -
## English

1. Animals give out information and show their feelings in different ways. (What is the meaning of 'give out' here? What other expressions can we use instead of 'give out'? Is it 'distribute'?) 2. Bees dance and tell other bees where to find food. (What is

*asked by rfvv on December 17, 2009* -
## Math

Find the area of the triangle with the base 1 2/5 yards and height 5/9 yards. The area of the triangle equals half of the product base and height. The area is ____yd^2 (Type whole number or a simplified fraction) I came up with 35/108 did I do the math

*asked by Denise on August 6, 2013* -
## Math

I need help on two problems I would like if you went step by step with the problem with me and then let me figure out the answer. If, Tonya and Toya have $15.25 together and Tonya had 25 cents more than Toya, how much does each have? Second question: Bruce

*asked by hip hop chic on August 29, 2005* -
## Physics

High-speed stroboscopic photographs show that the head of a golf club of mass 231g is traveling at 59.0m/s just before it strikes a 47.1g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 44.3m/s. Calculate

*asked by zhang135 on October 13, 2014* -
## Technology

1. Which of the following is NOT an example of a objective question? A. multiple choice B. essay** C. true/false D. matching 2. Why is it important to recognize the key word in an essay question? A. It will provide the answer in an essay B. It will show

*asked by Laurie on February 9, 2016* -
## physics

High-speed stroboscopic photographs show that the head of a golf club of mass 230g is traveling at 56.1m/s just before it strikes a 44.6g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 41.4m/s. Calculate

*asked by lyn on October 24, 2017* -
## Please help me solve this - PreCalc

Use identities to find the exact value of the trigonometric expression below. 1/cos2 * π/16 - 1/cot2 * π/16 PS: in words, the problem is, one divided by cosine-squared, then beside the cosine-square (still in the denominator) is pi/16. Minus one divided

*asked by chizoba on July 25, 2016* -
## physics

High-speed stroboscopic photographs show that the head of a golf club of mass 230g is traveling at 56.1m/s just before it strikes a 44.6g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 41.4m/s. Calculate

*asked by faith on October 24, 2017* -
## math

find the constant of proportionality and unit rate for the data in the table. Then write the equation to represent the relationship between time t and distance d Time Distance 2 t 90 miles 3 hrs 135 miles 5 hrs 225 miles 6 hrs 270 miles i need to show how

*asked by Natasha on April 4, 2017* -
## physics

High-speed stroboscopic photographs show that the head of a golf club of mass 230g is traveling at 56.1m/s just before it strikes a 44.6g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 41.4m/s. Calculate

*asked by Jelaa on October 24, 2017* -
## math

i have this question and im not sure how to do it i keep getting stuck with these types of questions and i would appreciate some help (a) The rate of decay of a radioactive substance, S, is proportional to the amount remaining, x. Given that x = a at time

*asked by jemmy on December 16, 2009* -
## Physics

On a frozen pond, a 11.7 kg sled is given a kick that imparts to it an initial speed of v0 = 2.01 m/s. The coefficient of kinetic friction between sled and ice is μk = 0.111. Use the work kinetic energy theorem to find the distance the sled moves before

*asked by Anonymous on March 16, 2016* -
## physics

A black and tackle with a velocity ratio of 5 is used to raise a mass of 25kg through a vertical distance of 40cm at a steady rate.if the effort is equal to 60N, determine a. The distance moved by the effort b. The work done by the effort in lifting the

*asked by abubakar on March 7, 2015* -
## physics

A 64.9 kg skier coasts up a snow-covered hill that makes an angle of 25.4° with the horizontal. The initial speed of the skier is 8.67 m/s. After coasting a distance of 1.92 m up the slope, the speed of the skier is 4.33 m/s. Calculate the work done by

*asked by Fallon on May 11, 2010* -
## Physics

A 61.8 kg skier coasts up a snow-covered hill that makes an angle of 26.0° with the horizontal. The initial speed of the skier is 6.10 m/s. After coasting a distance of 1.86 m up the slope, the speed of the skier is 4.48 m/s. Calculate the work done by

*asked by Fallon on April 29, 2010* -
## physics

A 64.9 kg skier coasts up a snow-covered hill that makes an angle of 25.4° with the horizontal. The initial speed of the skier is 8.67 m/s. After coasting a distance of 1.92 m up the slope, the speed of the skier is 4.33 m/s. Calculate the work done by

*asked by Fallon on May 9, 2010* -
## physics

A body of mass 5.0kg slides from rest down a plane inclined at 30degrees to the horizontal. After sliding 12m down the plane it is found to have a speed of 10m/s. a) How much work has been done in overcoming friction along the plane? b) Calculate the

*asked by sand on June 13, 2012* -
## physics

A small 2g plastic ball is suspended by a 20 cm long string in a uniform electric field. If the ball is in equilibrium when the string makes a 15 degree angle with the vertical, what is the net charge on the ball? E=10^3 N/c(answer: 5.25x10^-6) Work: I

*asked by Anonymous on February 11, 2008* -
## physics

On a frozen pond, a 13.2 kg sled is given a kick that imparts to it an initial speed of v0 = 2.48 m/s. The coefficient of kinetic friction between sled and ice is μk = 0.123. Use the work kinetic energy theorem to find the distance the sled moves before

*asked by Joe on February 18, 2012* -
## Physics

1. A steam engine converts 150 kg of water completely to steam. The process involves transfer of 4 x 10^8 J as heat. If steam escaping through the safety valve does 2 x 10^8 J of work against outside atmosphere, the net change in the internal energy is: a.

*asked by Isabella on December 21, 2015* -
## physics

A father pulls his young daughter on a sled with a constant velocity on a level surface through a distance of 10 m, as illustrated below. If the total mass of the sled and the girl is 35 kg and the coefficient of kinetic friction between the sled runners

*asked by Anonymous on April 11, 2010* -
## Physics

A 60kg softball player, who is 1.75m tall, performs 12 repetitions of a 140kg squat. If there is a 1m chance from the starting position to the bottom position, how much work is accomplished during the entire set? How much potential energy is stored at the

*asked by ljp33 on August 6, 2013* -
## physics

On a frozen pond, a 13.9 kg sled is given a kick that imparts to it an initial speed of v0 = 1.81 m/s. The coefficient of kinetic friction between sled and ice is μk = 0.122. Use the work kinetic energy theorem to find the distance the sled moves before

*asked by taylor on October 6, 2016* -
## P.E

What is a tactic in basketball and how does it work ? The word "tactic" just means a plan or a strategy. http://dictionary.reference.com/search?q=tactic&x=0&y=0 So ... who comes up with plans or strategies or tactics for players to use in a game? Who

*asked by DEBoRAH on September 3, 2006* -
## Honors Chemistry

If 72.4 kJ of heat is supplied to a 752 g block of metal, the temperature of the metal increases by 9.95°C. Calculate the specific heat capacity of the metal in J/g·°C. I cannot find the information in my textbook, and I don't understand the equation

*asked by Elisheva on July 21, 2014* -
## Physics 1

A 64.9 kg skier coasts up a snow-covered hill that makes an angle of 25.4° with the horizontal. The initial speed of the skier is 8.67 m/s. After coasting a distance of 1.92 m up the slope, the speed of the skier is 4.33 m/s. Calculate the work done by

*asked by Fallon on May 5, 2010* -
## Physics (Work Problem)

A 25kg box is pulled across a frictionless floor by a rope that is inclined 30 degrees above horizontal. The tension in the rope is 50N. How much work is done by the force in moving the crate 10 meters? If the box started at rest, what is the final

*asked by James T. on November 12, 2014* -
## Math

If I were to make an equation so that the left side were a reciprocal function and the right side were an absolute value function, then the equation would be guaranteed to have at least one solution. Why?

*asked by Mikala on January 2, 2017* -
## math

The equation 1/14 (196x+17-10)=______ (20x+12x) has no solution. The equation (4x+24/122)=_____ (x+16/122) Im sure the answer for the second one is 4, (4x+24/122) = 4 (x+16/122)

*asked by Steve on May 7, 2016* -
## 5th grade math (word problems)

Stefan pours 5/8 cup of milk. He uses 2/3 of it for a bowl of cereal. What fraction of a cup of milk does he use with his cereal? solution: 5/8 * 2/3 = 10/24 = 5/6. So, is the answer 5/6?

*asked by Alex on April 7, 2013* -
## Algebra

If I were to make an equation so that the left side were reciprocal function and the right side were an absolute value function then the equation would be guaranteed to have at least one solution. Why?

*asked by Joe on January 2, 2017* -
## Chem

Determine the concentration of a dioxin solution whose percent absorbance is 0.40% This is the resulting: Absorbance Dioxin 0.64 5.5 0.76 6.3 1.0 8.0 But why can't I figure out the concentration whose percentage is .40%?

*asked by Stacey on March 31, 2010* -
## math

The equation 1/14 (196x+17-10)=______ (20x+12x) has no solution. The equation (4x+24/122)=_____ (x+16/122) Im sure the answer for the second one is 4, (4x+24/122) = 4 (x+6/122)

*asked by Steve on May 7, 2016* -
## Intermediate Algebra

Please Help!! Use the discriminant to determine whether the follow equations have solutions that are: -two different rational solutions -two different irrational solutions -exactly one rational solution or -two different imaginary solutions. 8x^2+7x+3=0

*asked by ladybug on June 13, 2012* -
## Chemistry

35.0mL of 0.050 M HCl is titrated with 0.050 M NH3 (Kb= 1.8 x 10^-5). The pH of the analyte solution after 15.0mL addition of NH3 titrant is?

*asked by Eliza on April 11, 2017* -
## Chemistry

What volume of concentrated sulfuric acid (20% weight/weight, density = 1.14) is needed to prepare 1 L of a 0.5 N solution of sulfuric acid?

*asked by Caroline on February 11, 2018* -
## science

is salad dressing - homogenous or heterogenous if it is homogenous is it solution or colloids 8th grade science " just says salad dressing"

*asked by liz on October 5, 2007* -
## Algebra

If you replace the equal sign of an equation and put an inequality sign in its place, is there ever a time when the same value will be a solution to both the equation and inequality?

*asked by Diana on May 27, 2010* -
## Biology

Write a brief description of the procedure required to make 10mL each of 2 M, 1.5 M, and 1 M NaCl solution from a 2 M Stock NaCl. Write the description.

*asked by Debbie on September 23, 2012* -
## chemistry

How can you separate Ag+, Bi3+, Ni2+ in a solution? I am suppose to make a flow chart... would i use HCL to separate Bi3+ and Ag+ from Ni2+?

*asked by Marie on November 7, 2011* -
## chemisrty

the ph of a 4.0 mol/L solution of hydrogen fluoric acid is 3.0 is this a concentrated or diluted explain I believe it is concentrated because 3.0 is higher then 0.5 mol/L but it can also be diluted

*asked by Anonymous on April 7, 2016* -
## chemistry

What concentration of the barium ion,Ba^2+ ,must be exceeded to precipitate BaF2 from a solution that is 1.00*10^-2M in the fluoride ion,F-? Ksp for barium fluoride is 2.45*10^-5.

*asked by roshan on March 16, 2011* -
## Chemistry

A lactic acid/lactate ion buffer solution contains 0.19 M HC3H5O3 and 0.78 M C3H5O3-, respectively. The Ka value of lactic acid is 1.4*10^-4. Calculate the pH of this buffer.

*asked by Lynne on June 5, 2010* -
## Algebra

Kevin ran 4 miles more than Steve ran. The sum of their distances is 26 miles. How far did Steve run? The domain of the solution is {0, 4, 11, 22}.

*asked by Jd on August 21, 2014* -
## sciecnce (hypothesis)

Am doing a experiement with a egg and trying to see if the shell dissolves hypothesis: If the solution is vinegar then the egg shell will dissolve. Is the hypothesis correct

*asked by karan on September 18, 2011* -
## chemistry

What mass of NaCl is contained in 24.88g of a 15.00% by mass solution of NaCl in water? the answer is 3.73g but i don't know how to get this answer..

*asked by Alaine on October 3, 2012* -
## Statistics

I have a problem understanding how to set this problem up and get a solution: Consider a binomial experiment with n = 10 and p = 0.10. a. Compute P(x less than or equal to 2). b. Compute P(x greater than or equal to 1).

*asked by Joseph on September 24, 2007* -
## ENGLISH

I HAVE BEEN ASKED TO WRITE AN ARTICLE ABOUT FEMALE MOSQUITO, PROBLEMS CAUSED BY FEMALE MOSQUITO, SOLUTION TO THE PROBLEMS AND CONCLUSION.

*asked by priya on June 21, 2009* -
## maths

the sides of a rectangle are given in centimeters up length 4x+3 down length x+ 6y,left width 3x+1 right width 4x-y. find x and y and area of the rectangle .solution 4x+3=x+6y . y=3x+3÷6 also 4x-y=3x+1.x=y+1

*asked by chimere on May 7, 2015* -
## CHEMISTRY

Which is NOT a solution? 1 metal alloys, 2 ice in water, 3 sugar in water, 4 vinegar in water.......the answer is ice in water correct?

*asked by Mindy on November 11, 2011* -
## honors chem

Calculate the number of moles of solute in each of the following solutions: Solution Moles of Solute 4.4 L of 1.00 M CuCl = mol? 3.2 L of 2.60 M K2S= mol?

*asked by Tif on April 29, 2013* -
## Math

-x+5 < 1/x+3 The solution manual is my book shows this -x+5 - 1/x+3 < 0 -x^2 + 2x + 14/x + 3 < 0 (x+2.873)(x-4.873)/x+3 < 0 I understand everything except how the (-) sign from the -x^2 in the -x^2 + 2x + 14/x + 3 < 0 step disappeared in the

*asked by Anonymous on January 23, 2018* -
## Bio chem

How many mL of 0.80 molar NaOH must be added to 20 ml of 0.40 of molar propionic acid, in order to produce a solution with a pH of 4.89? (PKa of propionic acid is 4.89.)

*asked by Scott on May 4, 2017* -
## Chemisty

A solution contains 20g of C^6H^12O^6 in 250g of water. What is the freezing-point depression of the solvent? What is the Freezing point of the solvent?

*asked by Veronica on March 7, 2010* -
## chemistry

The vapor pressure of pure water at 25 degrees Celsius is 23.77 mm Hg. What is the vapor pressure, in mm Hg, of water above a solution that is 1.5m glucose, C6H12O6?

*asked by Anonymous on December 11, 2011* -
## chemistry

What concentration of the lead ion, Pb^{2+} , must be exceeded to precipitate PbCl2 from a solution that is 1.00 x 10^{-2} M in the chloride ion, Cl^- ? Ksp for lead chloride is 1.17×10−5 .

*asked by Anonymous on December 6, 2012* -
## Chemistry

A certain indicator, HA, has a Ka value of 6.3 × 10-8. The protonated form of the indicator is blue and the ionized form is red. -What is the PKa of the indicator? -What is the color of the indicator in a solution with pH=5?

*asked by jjhjhhjhk on November 2, 2014* -
## chem-please help!!!!!

when a 25.0 mL sample of an unknown acid was titrated with a 0.100 M NaOH solution. Determine Ka for the unknown acid. Volume NaOH = 25 mL; pH=8.25

*asked by Rosemary on October 18, 2010* -
## MATH!

The equation 1/14 (196x+17-10)=______ (20x+12x) has no solution. The equation (4x+24/122)=_____ (x+16/122) Im sure the answer for the second one is 4, (4x+24/122) = 4 (x+6/122)

*asked by Steve on May 7, 2016* -
## CHEMISTRY

Whats the pH of the solution which can be prepared by mixing same volumes of 0.5% NH4Cl and 0.25% KOH ? (K=1.8 * 10^-5) M(NH4Cl) 53.5 g/mol M(KOH)=56g/mol

*asked by Anonymous on February 12, 2013* -
## chemistry

In a titration, 25.0 mL of KHP is titrated to the equivalence point with NaOH. The final solution volume is 45.5 mL. What was the volume of NaOH used in the titration? 25.0 mL 20.5 mL 70.5 mL 45.5 mL

*asked by yuliette on June 11, 2016* -
## Algebra

Can someone help me with this question? Use the discriminant to determine whether the following equations have solutions that are:two different rational solutions: two different irrational solutions: exactly one rational solution: or two different

*asked by dani on April 25, 2010* -
## math

Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions.8x2 + 2x + 4 = 0

*asked by carol on May 2, 2011* -
## algebra

1. Kevin ran 3 miles less than Steve ran. The sum of their distances is 21 miles. How far did Steve run? The domain of the solution is {0, 10.5, 12, 18}.

*asked by Mariah on August 30, 2014* -
## Chmeistry

A lactic acid/lactate ion buffer solution contains 0.19 M HC3H5O3 and 0.78 M C3H5O3-, respectively. The Ka value of lactic acid is 1.4*10^-4. Calculate the pH of this buffer.

*asked by Lynne on June 5, 2010* -
## math

The equation 1/14 (196x+17-10)=______ (20x+12x) has no solution. The equation (4x+24/122)=_____ (x+16/122) Im sure the answer for the second one is 4, (4x+24/122) = 4 (x+16/122)

*asked by Steve on May 7, 2016* -
## Calculus

The slope of the tangent line to a curve at any point (x, y) on the curve is x/y. What is the equation of the curve if (3, 1) is a point on the curve? A. x^2 + y^2 =8

*asked by Justin on July 8, 2019* -
## Math

If you replace the equal sign of an equation and put an inequality sign in its place, is there ever a time when the same value will be a solution to both the equation and inequality?

*asked by Sharon on September 18, 2008* -
## History

As a result of the publications of Bartolomé de Las Casas: A. Amerindian rights were recognized and respected. B. the encomienda system was established. C. Amerindians became more maltreated than before. D. the Spanish government was more attentive to the

*asked by Any on February 6, 2014* -
## Health last questions.

Physical lines of defense include A. skin, cielia, and mucous membranes *** B. hair C. nails D. teeth When a doctor feels for lymph nodes, he is checking for A. inflammation *** B. shrinking C. pain D. sensitivity Your body can get antibodies from A.

*asked by Ann on March 11, 2015* -
## business

For this assignment you are to imagine that you are part of a select marketing group. This select group has been asked to consider the Colorado City Convention and Visitors Bureau survey of 25 hotels in the local area. The survey is concerned with the

*asked by ron on August 2, 2010* -
## Chemistry--help!

Given the equilibrium: HCN(aq) + H2O(l) ←→ H3O+(aq) + CN-(aq) ΔH >0; Ka = 4.0 x10-10 What happens to the concentration of hydrogen cyanide [HCN] when the following stresses are placed on the system at equilibrium? NaCl is added ---> Stays the Same but

*asked by Val on March 9, 2010* -
## Algebra with Applications

Suppose an insurance agent offers you a policy that will provide you with a yearly income of $150,000 in 25 years. What is the comparable annual salary today, assuming an inflation rate of 4%?. (Round your answer to the nearest cent.) I think I would solve

*asked by Danielle on August 26, 2012* -
## Physics

A cylinder with a valve at the bottom is filled with an ideal gas. The valve is now opened and some of the gas escapes slowly. The valve is then closed, after which the piston is observed to be at a lower position. Assume that the system is in thermal

*asked by Thomas Samuel Adams on November 21, 2010* -
## Chemistry

1) Frank and Oswalt report a molar absorptivity of 4700 L mol^-1 cm^-1 for thiocyanatoiron(lll) ion. What absorbance would you expect for a soloution that it 1.0e-4 M in thiocyanatorion(lll) ion, if the path length is 1.00 cm? 2) At a given temperature,

*asked by Joe on February 19, 2013* -
## Physics

1. A ball is launched from a cliff with an initial velcity of 10 m/s at an angle of 40 degrees above horizontal. If the ball lands 24 m away, determine the height of the cliff. 2. if the mass A is 1 kg and the mass of B is 6.0 kg, determine the

*asked by Liz on June 26, 2014* -
## physics

Rubbing your hands together warms them by converting work into thermal energy. If a woman rubs her hands back and forth for a total of 12 rubs a distance of 7.50 cm each and with a frictional force averaging 30.0 N, what is the temperature increase? The

*asked by Eric on July 19, 2013* -
## English.. Literature... books

can u give me multiple choice questions from the "examview" on the story "A Noiseless Flash" from Hiroshima by John Hersey ... i really need to practice this selection. Plz if u can, copy and paste the questions because the link you might send me would not

*asked by tara on March 11, 2011* -
## Early Childhood

Mrs. Bates watched David work a puzzle that he had chosen from the ones she put on the table. She listened and commented when David made guesses at the correct location for the pieces. This is an example of a/an __________ activity. A. structured B.

*asked by Teresa on March 12, 2014* -
## Physics

A med tech student pushes a 30-kg carton of books across the floor of her dormitory by exerting a constant force of 185 N at an angle of 37 degrees with the horizontal. If the opposing force of friction is 70 N, how much work does he do as he moves the

*asked by Paul on February 6, 2012* -
## sociology

Why did Max Weber fear bureaucracy? He thought it would discourage the growth of capitalism. Bureaucracy dominated individuals with large, impersonal structures. Bureaucracy increased mental health conditions among office workers. Discipline and hard work

*asked by ste on October 7, 2018* -
## English

What is the main message that the poem "Africa" suggests about the experience of misplaced Africans around the world? a. They are in danger of forgetting their origins if they do not come together. b. They might be enslaved, but they are strong and moving

*asked by Anonymous on December 5, 2018* -
## Economics.

What does, "What are two strategies might you employ in order to create and maintain a high demand for stained glass windows. Be sure to consider what would work best for your targeted customer base." mean? NOTE: My targeted customers are: In their middle

*asked by Nicole on October 20, 2013* -
## Physics

A student eats a dinner containing 8.0x10 raised to power 6j of energy. He wishes to do an equivalent amount of work in a nearby gym by lifting a 60kg object. How many times must he raise the object to expand this much energy? Assume that he raises it a

*asked by Reigna on January 7, 2017* -
## physics1111

Rubbing your hands together warms them by converting work into thermal energy. If a woman rubs her hands back and forth for a total of 14 rubs a distance of 7.50 cm each and with a frictional force averaging 30.0 N, what is the temperature increase? The

*asked by danny on November 12, 2013* -
## Chemistry

One of the lines in the spectrum of a mercury vapor lamp has a wave length of 254nm. What is the energy, in kj/mol, of this electro magnetic radiation. The work I have done: (6.626 x 10^-34 x 3.0 x 10^8) all divided by (254 x 10^-9.) The answer I

*asked by Casey on July 11, 2010* -
## English

i need ajectives (5), adverbs(5), similie (1), idiom (1), metphor (1) decribing Violet Beauregarde i reli need this i don't have the movie so i cant not watch it and my some of my internet doesnt work soo i cant watch it on youtube or otha sites so can

*asked by Anonymous on April 11, 2007* -
## Algebra

Hello ^^ I'm new to this site :0 I was wondering if someone could help me with my schoolwork! I have a bit of a habit of overthinking my work, so I just need it checked by someone to make sure I actually am you know, getting it. The problem is -(5)^-1, and

*asked by Luka on January 31, 2018* -
## Advanced Algebra

Carmela works at a department store and earns $10.45 per hour. She has $33 removed from every paycheck for medical insurance. If her goal is to earn a gross income of $468.60 in one week, which equation will help Carmela determine the number of hours (h)

*asked by Steve on October 10, 2017* -
## SS CHECK

2. What is the purpose of the separation of powers? A) to keep ordinary citizens involved in politics B) to prevent any branch from dominating the government C) to distribute work between state and federal levels of government D) to ensure that every

*asked by Katie on November 2, 2016* -
## MATH SUPER URGENT!

Alfonse cuts half a rectangular lawn, 50m by 20m, by mowing strips of equal width around the perimeter. Bart cuts the small rectangle in the middle that's left. How wide a strip does Alfonse cut so that they share the work equally?

*asked by Ibrahem Safieddine on December 2, 2015* -
## Pre-calculus

A golf ball is hit with an initial velocity of 135 feet per second at an angle of 22 degrees above the horizontal. Will the ball clear a 25 foot wide sand trap whose nearest edge is 300 feet from the golfer? Will be through with all the word problems soon.

*asked by Lucy on October 19, 2008* -
## chemistry

Dr bob can you help with my last question for tonights home work please A gas mixture consists of equal parts of methane(molecular weight 16.0) and argon (atomic weight40.0). if the partial pressure of argon is 26.6 kPa what is that of methane in the same

*asked by Andy on May 11, 2010*

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