Friday

February 27, 2015

February 27, 2015

Total # Posts: 496

**chemistry**

If 6.20 mol of calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2), a gas used in welding, will be produced? CaC2(s) + 2 H2O(l) Ca(OH)2(aq) + C2H2(g)
*February 11, 2015*

**math**

maria finds penny monday morning. she finds 2 tuesday morning. she finds 4 wednesday morning. on wednesday she has a total of 7 cents. on thursday, friday, saturday and sunday she finds double the amount of money she found the day before. how much money does maria have on sunday?
*January 22, 2015*

**Pre-Calc**

A.) Horizontal Asymptote- y=0, you can never have more than 1 (100%) or less than 0 (0%) of the chemical in the bloodstream B.) 46% is the maximum after 4.5 hours
*January 20, 2015*

**Physics**

The same amount of heat entering identical masses of different substances produces different temperature changes. Calculate the final temperature when 1.50 kcal of heat enters 1.25 kg of the following, originally at 22.5°C.
*November 26, 2014*

**English**

I am a little confused with this question. Base Details If I were fierce, and bald, and short of breath, I'd live with scarlet Majors at the Base, And speed glum heroes up the line to death. You'd see me with my puffy petulant face, Guzzling and gulping in the best ...
*November 13, 2014*

**English**

I need some help with looking over my answers... thanks for the help... Base Details If I were fierce, and bald, and short of breath, I'd live with scarlet Majors at the Base, And speed glum heroes up the line to death. You'd see me with my puffy petulant face, ...
*November 13, 2014*

**English**

thank you
*November 13, 2014*

**English**

I have two questions about this poem that I don't understand. Base Details If I were fierce, and bald, and short of breath, I'd live with scarlet Majors at the Base, And speed glum heroes up the line to death. You'd see me with my puffy petulant face, Guzzling and ...
*November 13, 2014*

**Exam week 4**

The relativist would agree with which statement about stem cell research?
*November 4, 2014*

**Physics**

(a) A small mail bag is released from a helicopter that is descending steadily at 2.13 m/s. After 4.38 s, what is the speed of the mail- bag? The acceleration of gravity is 9.8 m/s2 . (b) After the mailbag is dropped, the helicopter continues descending for 1 s but then stops...
*October 26, 2014*

**math**

each rabbit costume needs one and one half yards of white fur fabric,a yard of blue striped fabric,and a quarter of a yard of pink felt for the ears.
*October 16, 2014*

**English**

Write the vocabulary word that goes with each idea. Glared - legendary - muttered - gaped -flinched- fluke - snickering - stunned. 1/.............stared at angrily. Answer: glared 2/..........something so great that stories are told about it. Answer:legendary 3/..........said ...
*October 15, 2014*

**Grammar**

Form Questions: 1/ I went to london last year. When.............? Answer: when did go I to london? 2/ She bought a new car. What.............? Answer: what did she buy? 3/ he visited his uncle . Who.............. ? Answer: who did he visit? 4/ I did my homework an hour ago. ...
*October 12, 2014*

**english**

so u'r not gonna tell me what i need to improve on
*October 12, 2014*

**english-thesis**

hey can u help me make my thesis better! topic is fear of being judged by society. thesis statement:the labels that society puts on each other are what isolate one another from the rest i think i have to change the wordings to make it sound more better , i need help !
*October 12, 2014*

**english**

oh thanks !! and it's ok , but i wish there was
*October 12, 2014*

**english**

so what are smokers labeled as in society other than outcasts (for example smokers are known to be failures) by the way , is it possible to have a live one on one tutor chat here ?!
*October 12, 2014*

**english**

what does society think of smokers in comparison to non smokers
*October 12, 2014*

**equation**

its julia i found out
*October 11, 2014*

**equation**

lia each take a bicycle trip. Anna rides 20 km 1 1/3 hours. Julia rides 100 meters in 10 minutes. Which rider has the slower unit rate?
*October 11, 2014*

**Math check**

-28-33?
*October 9, 2014*

**Math check**

Subtract -28 - (-33)= -61
*October 9, 2014*

**statistics**

how to identify the 5 W's in the problem of the student averages in a High School college algebra class for the last semester. the teacher wanted to see how well the class did and constructed the Distribution from the grade book. who- Students what- average when last ...
*October 4, 2014*

**college algebra**

y = 1 − (x − 2)^2
*September 29, 2014*

**math/help please**

Question: a fertilizer covers 5/8 square foot in 1/4 hour. This is the last unit rates question. Please explain how you got the answer so I can understand this lesson.
*September 28, 2014*

**math/help please**

Question: a garden snail moves 1/6 foot in 1/3 hour. This is unit rates. Please help, I don't get this lesson!
*September 28, 2014*

**math/help please**

Question: Kenny reads 5/8 page in 2/3 minutes. This is unit rates. Please help!
*September 28, 2014*

**Math**

How can I explain that 1 15/16 is closest to 2 than 17/8 and 63/32
*September 17, 2014*

**Math**

I wrote question you have not dissolved
*September 13, 2014*

**Math**

Please solve the Q look ( nina, math)
*September 13, 2014*

**Math**

Analyze Greg saw these numbers on a license plate while driving: 2,4,5,3 and 9 . Write one possible number that could be on the license plate. Help me,,
*September 13, 2014*

**CHM**

rank the following items in order of accuracy when they are used for their intended purpose: volumetric pipet, beaker,erlenmeyer flask,mohr pipet,graduated cylinder,volumetric flask,buret my answer MOHR PIPETTE 1 VOLUMETRIC PIPETTE 2 BURET 3 VOLUMETRIC FLASK 4 GRAD CYLINDER 5 ...
*September 7, 2014*

**Chemistry**

Thank you but i'm not understanding how you got .002 for x
*August 3, 2014*

**Chemistry **

A chemist wants to prepare phosgene, COCl2, by the following reaction: CO(g) + Cl2(g) COCl2(g) He places 2.60 g of chlorine, Cl2, and an equal molar amount of carbon monoxide, CO, into a 10.00 L reaction vessel at 395 °C. After the reaction comes to equilibrium, he adds ...
*August 3, 2014*

**chemistry**

a) Calculate the percent ionization of 0.125M lactic acid (Ka=1.4x10^-4) b) Calculate the percent ionization of 0.125M lactic acid in a solution containing 0.00075 M sodium lactate.
*July 31, 2014*

**Statistics**

In hypothesis testing, as the a level gets smaller, the level of confidence increases. True or False? And why or why not?
*July 30, 2014*

**Statistics**

Express the confidence interval (0.033,0.099) in the form of P-E<p<P+E
*July 27, 2014*

**Statistics**

Express the confidence interval (0.033,0.099) in the form of P-E<p<P+E
*July 27, 2014*

**Writing**

Was it b? Did you get it right?
*May 21, 2014*

**Math Word Problem %**

if lisa spends 3 hours driving to and from work each day ,what percent of her day does,she spend driving to and from work each work day
*May 8, 2014*

**Math 221**

Thank You Steve I will note that thanks again !
*April 17, 2014*

**Math 221**

y-y1 =m(x-x1) y=5=-3x-*(x-1) y-5=-3x-3 y-5+3=-2+1= y=-3 I don't know if this is correct
*April 17, 2014*

**Math 221**

the equation of a line parallel to the given line but passing through the given point. I can't figure out. y=-3x-6;(-1, 5)
*April 17, 2014*

**chemistry**

a wet gas collected over water has a volume of 900 mL at50 degrees Celsius and a pressure of 84.6 kPa. The partial pressure of water at this temperature is 12.3 kPa. What is the volume of the dry gas at 120 kPa?
*April 6, 2014*

**ADVANCED WORD PROCESSING**

Sally will clear and set tabs in the Tabs dialog box. Desi will set and clear tabs on the Horizontal Ruler. Who is correctly setting and clearing tabs?
*April 4, 2014*

**Math**

What is the perimeter of a regular hexagon with sides measuring 3 1/2 feet
*April 1, 2014*

**Math **

A builder replaces the original 3 1/4 foot counter tops with one that are 2 1/2 feet high. What percent of the original height is the height of the replacement counter tops? Round your answer to the nearest whole percent
*March 31, 2014*

**Math help**

What is 27% of 90. estimate How do you solve
*March 31, 2014*

**MATH HELP!!**

3c-7d=-3 2c+6d=-34
*March 23, 2014*

**Chemistry [back-titration] - please check my sol'n**

I get it now. I didn't think about the reaction of Fe^2 and Cr2O7^2-. I thought they would produce FeCr2O7, so I thought they're in 1:1 ratio. Yes, I got 159.6 g/mol as weight of TeO2 (as what I've typed above). :) Yes, I've seen the post about the nuclear chem...
*March 19, 2014*

**Chemistry [back-titration] - please check my sol'n**

A 7.00 gram sample containing the mineral tellurite was dissolved then treated with 70.0 mL of 0.03114 M K2CrO7. 3 TeO2 + Cr2O7 ^2- + 8 H+ -> 3 H2TeO4 + 2 Cr3+ + H2O When reaction is complete, the excess Cr2O7 2- required a 14.05 mL back titration with 0.1135 M Fe2+. ...
*March 19, 2014*

**Economics**

Which of the following is not a factor of production? A. Capital B. Goods and Services C. Labor D. Land
*March 19, 2014*

**American Goverment**

I think it's C
*March 18, 2014*

**American Goverment**

Which is an important function of county government? A. taxing imports B. overseeing tribal governments C. running elections D. hosting foreign leaders
*March 18, 2014*

**Math**

George says that if you subtract 185 degrees from an angle that measures 360 degrees, the new angle is an obtuse angle. Is this true
*March 16, 2014*

**To Nina**

Oh my, thank you so much for your help...! :)
*March 16, 2014*

**Chemistry (titrations)**

Thank you! I understand it now. :)
*March 15, 2014*

**Chemistry (titrations)**

15.00 mL of 0.01200 M EDTA were used to titrate 50 mL aliquot solution containing iron (II). How much iron (II) is present in the solution? The answer in the book is 201 ppm. I tried getting the moles of EDTA (n,EDTA = 1.8 x 10^-4 mol). I think they're in 1:1 ratio, or I ...
*March 15, 2014*

**Chemistry**

Calculate the amount of energy released per gram of nuclei when 2 protium nuclei react to form deuterium nucleus (protium = 1.00782 amu, deuterium = 2.01410 amu). The answer in the book is -2.0 x 10^10 J, but I don't have any idea on how to do this. Please help, and thank ...
*March 15, 2014*

**Personal Finance**

The maximum tax rate on estates and gifts: A. is gradually declining. B. is gradually increasing. D. has increased sharply
*March 10, 2014*

**Math Analysis 2 **

assume that x=x(t) and y=y(t). Let y= (x^3)+4 and dx/dt=5 when x=2. dy/dt when x=2
*March 3, 2014*

**math**

Find the GCF and LCM of 15 and 50
*February 16, 2014*

**LANGUAGE ARTS UGRENT!!! (Check Answers)**

How about now Ms. Sue? 2: A 3: D
*February 12, 2014*

**LANGUAGE ARTS UGRENT!!! (Check Answers)**

Both are wrong?
*February 12, 2014*

**LANGUAGE ARTS UGRENT!!! (Check Answers)**

Oh okay. Are they right now? 2: The person that would buy the coat. 3: Anne has come to consider Mrs. Van Daan a member of her family because of the kindness she has shown.
*February 12, 2014*

**LANGUAGE ARTS UGRENT!!! (Check Answers)**

1. I was disgruntled by what you said, but I didn’t want to show my (1 point) happiness. **anger. jealousy. 2. When Peter tells everyone that Mr. Van Daan is going to sell Mrs. Van Daan’s coat, a stage direction reveals that Peter’s sympathy is with (1 point) ...
*February 12, 2014*

**Physics - please help me..**

A 1.35 kg mass is suspended from a spring with a spring constant of 189.0 N/m. The spring is attached to a rod which oscillates vertically at a frequency f. For what value of the frequency f will the system resonate?
*February 12, 2014*

**Damon**

I know that w=squ(k/m) and T=(2*pai)/w but its wrong and I dont know what to do.. can you help me?
*February 12, 2014*

**please help me.. physics**

A 1.30 kg mass is suspended from a spring, with a spring constant of 135.0 N/m. Find the driving frequency which would cause resonance.
*February 12, 2014*

**math **

Put into order from least to greatest 3/4, .85, 5/7, .62 My answer 3/4, 5/7, .62, .85
*February 11, 2014*

**math **

Put into order from least to greatest 3/4, .85, 5/7, .62 My answer 3/4, 5/7, .62, .85
*February 10, 2014*

**PHI103 WEEK 3**

This is the name for the reasons that one presents to support a conclusion. (Points : 1) Proposals Premises Deductions Inductions None of the above
*February 8, 2014*

**Physics**

A 3.00 gram lead bullet travels at a speed of 240 m/s and hits a wooden post. If half the heat energy generated remain with the bullet, what is the increase in temperature of the embedded bullet? (clead = 128 J/kg C)
*February 5, 2014*

**Earth Science**

Thx Richard and Ms. Sue i think i might get this.
*January 9, 2014*

**Earth Science**

The Rocky Mountains are more jagged than the Appalachian Mountains. This suggests that • erosion has worn down the Appalachian Mountains more than the Rocky Mountains. • the Rocky Mountains are older. • the Appalachian Mountains are more likely to experience ...
*January 9, 2014*

**trig**

Two Airplanes leave an airport at the same time on different runways. One flies on a bearing of N66degreesW at 325 miles per hour. The other airplane flies on a bearing öf S26degreesW at 300 miles per hour. How far apart will the airplanes be after 2 hours?
*January 6, 2014*

**trigonometry**

From a point 150 ft from the base of a building the top and the base of a flagpole on a roof edge have angles of elevation of 27degrees49' and 21degrees42' respectively. Find the height of the pole.
*January 6, 2014*

**trigonometry**

A ship is sighted directly east of a lighthouse. Another ship, which is 20m away from the first ship, is observed at a bearing of N25degreesE from the lighthouse. If the first ship is 4.1 km away from the lighthouse, what is the distance of the second ship from the lighthouse?
*January 6, 2014*

**Math**

The length of a football pitch is 100m and the width of the pitch is 80 m calculate the length of a diagonal of the pitch give your answer to the nearest metre
*January 1, 2014*

**Math**

A plane flies due east for 120 km from airport a to airport b it then flies due north for 280 km to airport c finally it flies directly back to airport a calculate the direct distance from airport to airport a give your answer to the nearest kilometre
*January 1, 2014*

**English (grammar)**

Hi. I just want to ask if the statement below is grammatically correct: " I'll keep up what I can do for other people. " I think the thought of the statement can be understood, but I'm not sure if the grammar is correct (or the words are like jumbled). Help ...
*January 1, 2014*

**PHI 103**

If P is true, and Q is false, the truth-value of "P v Q" is (Points : 1) false. true. Cannot be determined All of the above
*December 17, 2013*

**Math**

emma has a small garden. Emma's garden is 1/5beans 1/8 piece & 1/2 corn. the rest is planted with flowers. what fraction of Emma's garden is planted with vegetables
*December 17, 2013*

**Math**

emma has a small garden. Emma's garden is 1/5beans 1/8 piece & 1/2 corn. the rest is planted with flowers. what fraction of Emma's garden is planted with vegetables
*December 16, 2013*

**PLEASE HELP!!!!**

((cotx+cscx)/(sinx+tanx))=cotxcscx Please prove left side equal to right side, only doing doing work on the left.
*December 16, 2013*

**Math**

emma has a small garden. Emma's garden is 1/5beans 1/8 piece & 1/2 corn. the rest is planted with flowers. what fraction of Emma's garden is planted with vegetables
*December 16, 2013*

**math**

thank you :)
*December 12, 2013*

**math**

What integer would represent "twenty-two hundred feet above sea level"?
*December 12, 2013*

**PHI 103**

If an argument does not commit a fallacy, it is A.necessarily valid. B.necessarily sound. C.Not enough information to determine D.Both A and B
*December 8, 2013*

**PHI 103**

A person who is shown his or her argument commits a fallacy should A. run screaming from the room. B. argue louder. C. add another fallacy. D. revise the argument.
*December 8, 2013*

**English (grammar)**

Thank you very much for your help. :)
*November 29, 2013*

**English (grammar)**

Thank you for your reply. :) By the way, how about if it's in the past (contributes -> contributed)? Can the phrase still be 'to your becoming'?
*November 29, 2013*

**English (grammar)**

Is this statement correct? "Helping other people contributes to your being a great leader." I'm not really sure with the phrase 'to your being'. It sounds incorrect but I'm not really sure. If it's incorrect, how do I rephrase the sentence?
*November 29, 2013*

**PreCal**

Logarithm of a negative number is imaginary. If you try plotting y = log x, you'll see that the x values are all positive and infinitely approaches zero.
*November 29, 2013*

**math check**

what unit of measure would you use to describe the distance from your house to school? D. Meters a.grams b. kilometers c. liters d. meters
*November 17, 2013*

**ELA? Check answers!!**

1. Which of the following places would need to be sterile? A: park B: classroom C: A hospital operating room 2.Which of the following example of a question you might ask yourself to monitor comprehension? A: How can thrid-degree burns be treated at home? B: How is a third-...
*November 13, 2013*

**Math Help! Someone please help?:)**

1. The sides of a square are increased by a scale of 6. The perimeter of the small square is 10ft. What is the perimeter of the larger sqaure? 2.5 ft, 10 ft, 60 ft, 120 ft 2. A map of Utah has a scale of 1 cm:30 mi. The boarder of Utah and Wyoming measures about 3.7 cm. How ...
*November 5, 2013*

**Math help**

Solve this equation and check answer Fraction→n/56=8
*October 27, 2013*

**Math help**

Solve this equation and check answer Fraction→n/56=8
*October 24, 2013*

**Physics**

A 5 kg ball rolls down a 10meter long slope. Ignoring friction, how fast will the ball be rolling when it reaches the bottom?
*October 21, 2013*

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