Tuesday
October 21, 2014

Posts by Blair


Total # Posts: 120

Chemistry
A mixture of nitrogen gas and hydrogen gas reacts in a closed container to form ammonia gas. The reaction ceases before either reactant is completely consumed. At this stage the container has 3.0 mol each of all three gases; nitrogen, hydrogen and ammonia. How many moles of ...
June 29, 2013

MATH- Algebra 2
x^2-6>-5x 6x^2-5x+1<0 Solve (using any method), write your answer in interval notation and graph the solution set.
February 17, 2013

MATH- Algebra 2
Solve each quadratic in form equation. 1. 4y^4+9=13y^2 2. x-3x^1/2+2=0 3. (x-5)^2+2(x-5)-35=0 4. (x-2)^2-3x-2)+2=0 5. 2(x^2-5)^2-13(x^2-5)+20=0 6. 2x^2/3+5x^1/3-6=0 7. 6x^2/3-5x^1/3-6=0 8. x^-2+4x^-1=12 9. x^4-8x^2+7=0 10. x^4-2x^2-35=0 can someone please help?
February 17, 2013

MATH- Algebra 2
Solve the Given Equations 1. 5/2y+6+1/y-2=3/y+3 2. 5/a-5-1=a/a-5 3. 2/x^2+x-12-6/x+4=2/x-3 4. 65-n/n=4+5/n 5. a/a-2+2/3=2/a-2 6. x-1/3+x+2/4=1/6 7. 5/3x-1/9=1/x 8. 3/3x-2=4/2x+1 9. 3/x+3-1/x-2=5/2x+6
February 17, 2013

Math
Solve each quadratic in form equation. 1. 4y^4+9=13y^2 2. x-3x^1/22=0 3. (x-5)^2+2(x-5)-35=0 4. (x-2)^2-3x-2)+2=0 5. 2(x^2-5)^2-13(x^2-5)+20=0 6. 2x^2/3+5x^1/3-6=0 7. 6x^2/3-5x^1/3-6=0 8. x^-2+4x^-1=12 9. x^4-8x^2+7=0 10. x^4-2x^2-35=0
February 15, 2013

chemistry
A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 5.908×10−10 m. Determine the frequency (in hz) of the interacting photon.
January 12, 2013

to ms.sue
ok.thankyou soooooo much
August 21, 2012

to ms.sue
can you give me ideas. not websites
August 21, 2012

pleeeeeeeeeese
im writing a speech about hoola hooping can you help me and give me 5 ideas. and if u want give me more.
August 21, 2012

english
THANK U SOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO MUCH FOR THE INFORMATION MS.SUE
June 3, 2012

english
i am writing a speach . and i need your help to give me 15 ideas .the speach is if i ruled the world . (tell me your ideas)
June 3, 2012

Religion
yes
May 28, 2012

english
how many musicians in a quartet?(5, 6,or 7)
May 28, 2012

life oriantation
plant trees.smoke free. instead of using a car u could use bikes or scooters.
May 28, 2012

english
i need help finding jokes for my talent show
April 23, 2012

english
is their any such things as a sklekion bird that talks.
April 21, 2012

URGENT!! Chemistry HELP!!
Use standard enthalpies to calculate Triangle H for: 2C2H5OH (I) + O2 (g) -> 2CH3CHO (g) + 2H2O (I)
April 19, 2012

chemistry
mols HCl= molsNaOH?
March 21, 2012

chemistry
how do you determine the L NaOH?
March 21, 2012

chemistry
72.33 mL of 0.137 M HCl was added to an Erlenmeyer flask and is titrated with 0.165 M NaOH. Calculate the pH when 5mL of NaOH is added after the equivalence point has been reached.
March 21, 2012

chemistry
A 3.555 g sample of a monoprotic acid was dissolved in water. It took 23.32 mL of a 0.875 M NaOH to neutralize the acid. Calculate the molar mass of the acid.
March 21, 2012

chemistry
it doesn't say. That's all that is asked.
March 21, 2012

chemistry
Calculate the pH when 75.20 mL of 0.114 M HCl is titrated with 0 ml of 0.108 M NaOH
March 21, 2012

chemistry
Calculate the pH when 75.20 mL of 0.114 M HCl is titrated with 0 ml of 0.108 M NaOH
March 21, 2012

chemistry
A 3.555 g sample of a monoprotic acid was dissolved in water. It took 23.32 mL of a 0.875 M NaOH to neutralize the acid. Calculate the molar mass of the acid.
March 21, 2012

chemistry
72.33 mL of 0.137 M HCl was added to an Erlenmeyer flask and is titrated with 0.165 M NaOH. Calculate the pH when 5mL of NaOH is added after the equivalence point has been reached.
March 21, 2012

social studies - 2nd grade
i have a test tomorow . so can you help me ? thank you.
January 31, 2012

social studies - 2nd grade
how do people change the environment? How do people change my community? i have a project on this can you please help me? thank you
January 28, 2012

Trigonometry
tan^2(x)=-3/2sec(x)
December 11, 2011

Trigonometry
When I solved this out I got x=-32/12 and x=1/4. Is this right?
December 11, 2011

Trigonometry
4+29sin=12cos^2 How do you determine this
December 11, 2011

Physics
When the dried up seed pod of a scotch broom plant bursts open, it shoots out a seed with an initial velocity of 2.2 m/s at an angle of 60.0° above the horizontal. If the seed pod is 0.8 m above the ground, how long does it take for the seed to land? (Neglect air ...
July 5, 2011

chemistry
First of all, the density makes no sense without units. Secondly, you should only specify the amount of something present in one way. The questions gives two: (1) a molarity and a volume. (2) a percentage (by volume or by mass?) and a density. So you can't solve such a ...
March 23, 2011

US History
Hello! I have an assignment where I have to rewrite the Bill of Rights in modern english. I've been able to do most of them, but I'm stumped on the 9th amendment. "The enumeration in the Constitution of certain rights shall not be construed to deny or disparage ...
March 17, 2011

Chemistry
the initial pressure of phosgene gas (COCl2), was 1.31 atm. it was heated, and at equilibrium the pressure of CO was found to be .547 atm. what are the equilibrium pressures of Cl2 and COCl2? CO +Cl2=COCl2 i've done it twice and keep getting the wrong answer
November 4, 2010

physics
A 0.25 kg ball is thrown straight up into the air with an initial speed of 20 m/s. Find the momentum of the ball at the following locations.
November 2, 2010

physics
An 8.00 g bullet is fired into a 160 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet remains in the block, and after the impact the block lands d = 2.1 m from the bottom of the table. Determine the initial speed of the bullet.
November 2, 2010

Chemistry
how to determine the change in the number of moles of gas in the reaction 2H2 g + O2 g= 2H2Ol i thought it was 2 because the product is a liquid but that isn't correct
November 1, 2010

physics
A beam of microwaves with = 0.7 mm is incident upon a 12 cm slit. At a distance of 2 m from the slit, what is the approximate width of the slit's image?
October 31, 2010

Chemistry
How many moles of solute particles are present in 1 L of aqueous 0.08 M ethanol (C2H5OH)?
October 18, 2010

physics
While exploring a cave, a spelunker starts at the entrance and moves the following distances: 75.0 m north, 245 m east, 210 m at an angle 30.0° north of east, and 150 m south. Find the resultant displacement from the cave entrance.
September 27, 2010

Maths
almudena has cut three quarters of a rope to 3 m in length and daniel has cut 3 / 5 of another of 4 m. ? which of the two pieces are longer
September 9, 2010

Economics
What types of resources do you believe would be inelastic within the construction industry? Explain. Would you consider the elasticity of demand for oil to be elastic or inelastic?
August 10, 2010

math
evaluate the expression (-7)-8
June 8, 2010

language
sorry Ms. Sue, i couldn't find my glasses. living room and knicknacks, i'm not sure about this one. vacuumed /verb dusted / verb piano . noun?
May 13, 2010

language
thank you Ms. Sue, my new sentence is Leanna, vacuumed the living room and dusted the knicknaks on the piano. Please diagram the adjective modifiers. Thank you.
May 13, 2010

6th grade language
please help.diagram the adjective modifier in this sentence. The red tuplis and yellow daffodils are pretty. thanks
May 13, 2010

math
no, actually I'm wrong
April 2, 2010

math
31.275lb
April 2, 2010

Social Studies
Individuals elected by the people to represent them.
April 2, 2010

Social Studies
Did Rome start as a city on the Italian Peninsula?
April 2, 2010

Social Studies
What is one freedom that American democracy has today that was clearly not recognized in the Roman Empire?
April 2, 2010

Social Studies
Why do you suppose some of Rome's citizens wanted absolute rulers instead of elected senators?
April 2, 2010

Math
Kalvin wants to eat Coco blast but his mom doesn't want him to because it's to sugary.So, Kalvin decides to flip a penny. Every time he gets a head he eats coco blast, and every time he gets tails he doesn't. Later on he found out it did not help b/c it was a 50% ...
March 31, 2010

correct punctuation
One thing that happened over the summer, I grew. Grim takes a look at me one day and he goes, "all that walking you do, it must be stretching your legs, and carrying poor Kevin around that seems to be putting real muscle on you." He's not that heavy, and anyhow ...
March 7, 2010

grammar
One thing happened over the summer, I grew even more. Grim takes a look at me one day and he goes, "all that walking you do, it must be stretching out your legs, and carrying poor Kevin around that seems to be putting real muscle on you. He's not that heavy, and ...
March 7, 2010

grammar
punctuation of passage. one thing that happened over the summer i grew even more grim takes a look at me one day and he goes all that walking you do it must be stetching out your legs and carrying poor kevin around that seems to be putting real muscle on you
March 7, 2010

physics
A 2.00 kg aluminum block and a 5.20 kg copper block are connected by a light string over a frictionless pulley. They sit on a steel surface, where θ = 28.0°. Determine the sum of the magnitudes of the forces of friction acting on the blocks....
October 24, 2009

physics
A 1.30 kg toaster is not plugged in. The coefficient of static friction between the toaster and a horizontal countertop is 0.400. To make the toaster start moving you carelessly pull on its electric cord. (a) For the cord tension to be as small as possible, you should pull at ...
October 24, 2009

Biology
Which is the most common complex carbohydrate on earth? A. Starch B. Glycogen C. Cellulose D. Hemicellulose E. Chitin
October 24, 2009

Biology
Which monosaccharide requires the most steps to proceed through glycolysis? A. Glucose B. Galactose C. Fructose
October 24, 2009

Biology
Anaerobic fermentation in yeast produces (include all of the final products). A. Lactic acid, NAD and CO2 B. Lactic acid and NADH C. Lactic acid, NADH and CO2 D. Lactic acid and NAD E. Ethanol and CO2 F. Ethanol, NADH and CO2 G. Ethanol, NAD and CO2 H. Acetaldehyde and NADH
October 24, 2009

physics
In an Atwood machine m1 = 2.00 kg and m2 = 6.50 kg. The masses of the pulley and string are negligible by comparison. The pulley turns without friction and the string does not stretch. The lighter object is released with a sharp push that sets it into motion at vi = 2.20 m/s ...
October 21, 2009

physics
A block is given an initial velocity of 1.00 m/s up a frictionless 25.0° incline. How far up the incline does the block slide before coming (momentarily) to rest? Please help! Thanks!
October 21, 2009

Biology
The reason you might see fewer colonies on your LB/Amp/Arabinose + plate (compared to the number of colonies..? The reason you might see fewer colonies on your LB/Amp/Arabinose + plate (compared to the number of colonies that you see on your LB/Amp + plate) is because? a. UV ...
October 18, 2009

physics
Vroom-vroom! As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 8.40 mi/h·s. In the adjoining bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant acceleration of 11.5 mi/h·s. Each ...
October 9, 2009

physics
A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.8 m/s at ground level. Its engines then fire and it accelerates upward at 3.90 m/s2 until it reaches an altitude of 920 m. At that point its engines fail, and the rocket goes into ...
October 8, 2009

physics
1st car =8.6/2.05 m/s =4.195m/s 2nd car = 8.6/1.73 m/s =4.971 m/s 4.971-4.195= 0.776m/s a= delta V /delta T (0.776m/s ) /0.32s= 2.44 m/(s^2) That answer isn't correct. This is what I did initially and I'm stumped on this question. Please let me know if there's ...
October 8, 2009

physics
Liz rushes down onto a subway platform to find her train already departing. She stops and watches the cars go by. Each car is 8.60 m long. The first moves past her in 2.05 s and the second in 1.73 s. Find the constant acceleration of the train. _____m/(s^2) Please explain this...
October 8, 2009

physics
A student throws a set of keys vertically upward to her sorority sister, who is in a window 4.30 m above. The keys are caught 1.30 s later by the sister's outstretched hand. (a) With what initial velocity were the keys thrown? _____________ m/s upward (b) What was the ...
October 8, 2009

Organic Chemistry
What is the name of the product made from acetone and 4-methylbenzaldehyde in an aldol condensation?
July 10, 2009

biology
What is the role of Frc-2,6 bis phosphate in Glycolysis and Gluconeogenesis?
February 27, 2009

biology
What is the role of Frc-2,6 bis phosphate in Glycolysis and Gluconeogenesis?
February 27, 2009

Organic Chemistry
What product is expected from the reactino of fumaric acid (trans-2-butenedioic acid) with 1,3-butadiene?
February 27, 2009

Organic Chemistry
Benzene is often produced as a by-product during the synthesis of phenylmagnesium bromide. how can its formation be explained? Write a balanced chemical equation for the formation of benzene.
February 27, 2009

organic chemistry
If, by mistake, a chemist used 100% ethanol rather than diethyl ether as the reaction solvent, would the Grignard synthesis still proceed as expected?
February 27, 2009

Organic Chemistry
Write an equation for the reaction that occurs in the gas trap between SO2 and NaOH.
February 20, 2009

Organic Chemistry
List the following compouns from highest to lowest frequency. Cyclohexanone, 2-cyclohexenone, cyclohexanecarbaldehyde
February 20, 2009

Organic Chemistry
The reaction of (Z)-butenedioic acid with 1,3-cyclopentadiene gives only one product. Why?
February 20, 2009

Organic Chemistry
How could you distinguish between cyclohexane and cyclohexene using Infrared Spectroscopy only? How could you distinguish between 1-hexene and 1-hexyne using IR only?
February 11, 2009

Chemistry!! Please Help!
THANKS! I know what I was doing wrong! I didn't find the pOH I just did 10^-9.65 trying to find x! I understand now! Thanks so much! -B
February 6, 2009

Chemistry!! Please Help!
A 0.285 M solution of the sodium salt, NaA, of the weak monoprotic acid, HA, has a pH of 9.65. Calculate Ka for the acid HA. I think I am having issues with the equation and then the math part. I figured out what 'x' was from the pH, which I believe is 2.2x10^-10, but ...
February 6, 2009

Ochemistry
Suggest an appropriate reducing reagent for the following substrates and predict the product of the reactions : (a) 2-hexanone (b) ethyl 4-nitrobenzoate (reduction of the nitro group) (c) hexanal Would NaBH4 work for all of them ? Please help !
February 5, 2009

Ochemistry
4-chlorophenol is insoluble in water. Explain why 4-chlorophenol dissolves in 2.5M aqueous NaOH solution. -Besides NaOH being a strong base and a great nucleophile is there any other reason ?
January 13, 2009

chemistry-help
Why does an organic mixture being distilled using steam distillation never rise above 100 degrees Celsius?
November 12, 2008

chemistry
Oh it is, but same idea.
November 10, 2008

chemistry
An optical rotation study gives result of +140 degrees. Suggest a dilution experiment to test whether the results is indeed +140 degrees, not-200 degrees. THANK YOU!
November 10, 2008

chemistry HELP PLEASE !
Thank you!
November 5, 2008

chemistry HELP PLEASE !
A solution consisting of isobutyl bromide and isobutyl chloride is found to have a refractive index of 1.3931 at 20oC. The refractive indices at 20oC of isobutyl bromide and isobutyl chloride are 1.4368 and 1.3785, respectively. Determine the molar composition (in percent) of ...
November 5, 2008

Humatn Resource
Does "Pay for performance" fall under the category of "Compensation and Benefits"?
October 13, 2008

Human Resources
I asked this question before, I asked what are some good "Compensation and Benefits" discussion topics? And people gave me a lot of ideas: Higher wages Flexible hours Work at home Increased health care benefits Benefits for same-sex partners Benefits for opposite-sex...
October 13, 2008

Human Resource
What are some good "Compensation and Benefits" (from a HR point of view) discussion topics? It doesn't have to be a broad topic, it could be a specific one. Thank you in advance!
October 3, 2008

chem
In the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water, the oxidizing agent is____. Is it hydrogen peroxide?
August 11, 2008

Chemistry
The standard solution of FeSCN2 (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.550. If a trial's absorbance is measured to be 0.350 and its initial concentration of SCN– was 0.0010 M, the equilibrium concentration...
August 8, 2008

Chemistry
The solubility of borax is directly proportional to temperature. Therefore, the sign of H is A. negative B. positive
August 8, 2008

chemistry
lol webwork.
August 8, 2008

Chemistry
Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. dependent on the mass of solute present. C. independent of the chemical ...
August 8, 2008

Chemistry
The molarity and the molality of a solution prepared by dissolving 2.00 g of ethanol C2H5OH with 99.0 g of water to give a final volume 101 mL are ______Molarity and _______molality. How do I do this?
August 4, 2008

Chemistry- HWK CHECK
1. A solution in which no more solid can be dissoved is referred to as ____. Answer: saturated 2.At constant pressure, heat can be referred to as (entropy, enthalpy, or free energy). Answer: enthalpy The measure of disorder or randomness of a system is(entropy, enthalpy, or ...
August 4, 2008

Chemistry
The freezing point of a solution is A. lower than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstructon by solute particles.. B. lower than the freezing point of the solvent alone ...
August 4, 2008

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