Friday

November 21, 2014

November 21, 2014

Total # Posts: 522

**Chemistry**

Consider the following reaction: 4NH3(g) +5O2(g) -->4NO(g) +6H2O(g) Suppose we have two flasks connected by a stopcock. In one flask, we have 2.0L of NH3(g) at a pressure of .500 atm. In the other flask, we have 1.00L of O2(g) at a pressure of 1.5atm. When the stopcock is ...
*October 29, 2014*

**Math**

A) P is approximately (0.883, 0.469), is a point on the unit circle with angle 28 degrees estimate the following. Sin 152 degrees = Cos 152 degrees = please help me step by step
*October 24, 2014*

**chemistry**

When 2016 J of heat energy is added to 49.5 g of ethanol, C2H6O, the temperature increases by 16.6 °C. Calculate the molar heat capacity of C2H6O. 49.5g = 2.98mols C=q/n*temperature change in Celsius 2016/2.98*16.6
*October 19, 2014*

**mathematic**

The local skateboard company reports that when they produce and sell n skateboards in a week, the cost is represented by the modelc=850+76n . The revenue is represented by the model r=150n. If both C and R are in dollars, write an equation for the profit from producing and ...
*September 30, 2014*

**physics**

A spacecraft is in orbit close to the moon's surface. The centripetal acceleration is 1.6 m/s^2. If the radius of the moon is about 1.7 x 10^6 m, determine: a)the orbital speed b)the period of the orbit
*September 27, 2014*

**science**

does kidney transplant always succesful
*July 24, 2014*

**Physics**

A 42.0 kg swimmer with an initial speed of 1.50 m/s decides to coast until she comes to rest. If she slows with constant acceleration and stops after coasting 2.00 m, what was the magnitude of the force exerted on her by the water?
*July 2, 2014*

**physics please help!!**

find the temperature of the hot reservoir of a carnot engine that has QH=1575j that does work on a 200kg crate, caussing it to go from rest to a velocity of 2.35m/s along the horizontal frictionless surface. Tc=100K
*June 26, 2014*

**math please help**

Limit as x approaches zero of (sinx-(x^3/6)/x^5)
*June 18, 2014*

**Maths**

For a) you just need to divide that amount of space each girl has by 100 and times it by the total area of the house they are renting. then you times the percentage you get by that cost of rent. eg: Laura = 20/100x50 = 40% = 40/100*900 = $360 For b) you calculate their food ...
*May 29, 2014*

**Maths**

Alison, Caitlin and Laura are sharing three bedroom two bathroom house at $900 rent per fortnight. Their weekly food bill is $210 per week and they save $50 per week for electricity and water. They share the rent based on the size of their bedroom and bathroom and share other ...
*May 29, 2014*

**ALGEBRA! URGENT. Check Answers!**

Thank you!
*May 27, 2014*

**ALGEBRA! URGENT. Check Answers!**

So number 1 and 2 are correct? and Number 3 would be changed to -2x^2 - 2x + 5
*May 27, 2014*

**ALGEBRA! URGENT. Check Answers!**

1. 18x^2 + 6 + 4x - 15x^2 - 4 + 13x Answer: 3x^2 + 17x + 2 2. 3x^2 + 6 - 2x + 5x - 4x^2 + 9 Answer: -x^2 + 3x + 15 3. 3x^2 + 5x - 7x + 3 - 5x^2 + 2 Answer: -2x^2 + 2x + 5 4. In the expression -7x - 3x^2 + 5. What is the coefficient of x? Answer: I think it's 7 or -7 Thanks!
*May 27, 2014*

**Math**

Thank you. I forgot the brackets
*May 9, 2014*

**Math**

What's the answer to 1^2-(2-x)^2=2^2-x^2 The answer said x =7/4 But no matter how I tried. I couldn't get that
*May 9, 2014*

**Paper Writing**

I've looked through that, but it doesn't say the proper way to differentiate between each lecture. I was thinking maybe the date or the title of the lecture, but I'm not sure and I didn't see it specifically stated.
*April 18, 2014*

**Paper Writing**

MLA
*April 18, 2014*

**Paper Writing**

I am writing a paper where I cite multiple lectures by the same professor. How do I format the intext citations?
*April 18, 2014*

**Math**

I mean t -336x^3+ 288x
*February 13, 2014*

**Math**

How do you factor out the GCF from each polynomial in this kind of problems -336x3 + 288x
*February 13, 2014*

**Math**

A simple calculation will reveal that 72 has 12 factors including 1 and 72. How many natural numbers less than 100 have 12 such factors
*February 8, 2014*

**Math**

A simple calculation will reveal that 72 has 12 factors including 1 and 72. How many natural numbers less than 100 have 12 such factors
*February 7, 2014*

**Math**

Peter notices that the teenage students who are members of the math club have ages whose product is 611520. How many members does the club have? Extensions: Is it true that whatever number replaces 611520 that this problem has a unique solution? Suppose the club included 12 ...
*February 7, 2014*

**Precalculus**

Let f(x)=e^x. Compute the average rate of change over the interval [ln3, ln4].
*January 27, 2014*

**chemistry**

Question: Consider this molecular-level representation of a gas. There are: 5 orange gas particles 6 blue gas particles 3 green molecules of gas (two particles attached together) If the partial pressure of the diatomic gas is 0.510 atm, what is the total pressure? I have tried...
*December 8, 2013*

**English (phrasal modals)**

So I am correct on the first one because "could be" is not a phrasal modal. "Could" is just a single-word modal.
*November 19, 2013*

**English (phrasal modals)**

Zach used to work at an independent record label. Negotiating could be exciting, but he was supposed to slant everything in the label’s favor. Some reps used questionable tactics. He couldn’t look at himself in the mirror if he treated people like that. First ...
*November 19, 2013*

**chemistry**

1. A website promoting the use of alternative energy vehicles and hybrid technologies claims that, \"A typical automobile in the USA uses about 40 gallons of gasoline every month, producing about 750 lbs of carbon dioxide.\" To determine the truth of this statement, ...
*November 17, 2013*

**Calculus Antiderivative Problem**

An object moves along a coordinate line with acceleration a(t)=(t+2)^3 units per second per second. a). The initial velocity is 9 units per second. The velocity function is v(t) = b).The initial position is 2 units to the right of the origin. The position function is x(t) =
*November 8, 2013*

**Calculus Antiderivative Problem**

A car traveling at 46 mph decelerates at 21 feet per second per second. a). How long does it take for the car to come to a complete stop? b). What distance is required to bring the car to a complete stop? An
*November 8, 2013*

**English**

I just can't think of anything to write about from all of those words I don't know how to start it
*October 8, 2013*

**English**

Make a story with these words : climb,explode,sing,bounce,fly,cereal,bouncing castle,bomb,rainbow,hippy,ameriican farmer,superhero,mentally unstable man
*October 8, 2013*

**History**

Thank you ever so much ms.sue xxx mwahhh
*October 8, 2013*

**History **

Give me a paragraph on patricians villas from Rome
*October 8, 2013*

**History**

Describe a patrician villa
*October 8, 2013*

**Check my answer plz!!**

It's all right well done :)
*October 8, 2013*

**Anthropology**

What are some examples of careers for Prehistoric Archaeologists?
*August 21, 2013*

**Maths**

At 7pm the outdoor temperature was -12degrees celsius. By 11pm the temperature in degrees celsius had dropped x degrees celsius. Which expression represents the temperature reading at 11pm. a -12-x b -12+x c-12 d -12x e 12 a is my answer A total of m players came to soccer ...
*August 14, 2013*

**math**

There is a jar of 16 marbles. 4 red, 7 blue and 5 green. 1) What is the probability of selecting a red marble, REPLACING it, and then selecting a blue marble. 2) What is the probability of selecting a red marble, then SETTING IT ASIDEm then selecting a blue marble?
*May 24, 2013*

**College Chemistry 104 **

Students are attempting to construct a battery in the laboratory that will light up a light bulb. Compare the following lists prepared by students and determine which student will not be able to successfully build a "battery" that will light up the bulb. Student 1 ...
*May 10, 2013*

**MATH Calculus Homework PLEASE HELP!**

Let T be the triangle 1≤x≤2, 0≤y≤3x-3. Find the volume that results by rotating the triangle T around the line x=-1.
*May 9, 2013*

**MATH Calculus Homework #2**

Let T be the triangle 1\le x\le 2, 0\le y\le 3x-3. Find the volume that results by rotating the triangle T around the line x=-1.
*May 9, 2013*

**MATH Calculus Homework**

Oh I forgot about the ± sign. THANK YOU!!
*May 9, 2013*

**MATH Calculus Homework**

Why is g(x)=-sqrt(4x)?
*May 9, 2013*

**MATH Calculus Homework**

I sorry but I don't undestand. What would be f(x) and g(x)?
*May 9, 2013*

**MATH Calculus Homework**

Find the area of the region between the curve y^2=4x and the line x=3.
*May 9, 2013*

**MATH Calculus Homework**

First off, thank you answering my question. I just have one question. So does it matter which method we use? I am just trying to find a better way of understanding this problem from a visual perspective.
*May 9, 2013*

**MATH Calculus Homework**

Let R be the region between the graph of y=x3 and the x-axis, and between x=0 and x=1. Compute the volume of the region obtained by revolving R around the y-axis
*May 9, 2013*

**Meteorology**

What weather word has the letters pedtidnw
*April 18, 2013*

**Probability**

It's the floor function of(n+1)p . (n+1)p = 2.6 and the floor is therefore 2.
*March 31, 2013*

**Probability**

Let X be the number of successes in 25 independent trials with probability 1/10 of success in each trial. Let m be the most likely value of S. Find m.
*March 31, 2013*

**American History**

What principles of American foreign policy did the Berlin airlift put into action? What do you think might have happened if the U.S. and Britain had not tried the airlift or if the airlift had failed?
*March 17, 2013*

**Morphemes**

My professor gave an example: cats - /cat/s /(2 morphemes). And said the s is another morpheme. Is sitting - sit/ting ? Is runners - run/ner/s?
*March 12, 2013*

**Morphemes**

Please check these morphemes' divisions. 1)mice -/mice/ (1) 2)sitting - /sitting/ (1) 3) punches - punch/es (2) 4)runners - /runner/s/ (2) 5)firefighters - fire/fight/ers (3) 6) Automobile - auto/mobile (2) 7)Chart - /chart/ (1) 8)horseshoe - horse/shoe (2) 9)sees - /sees...
*March 12, 2013*

**Phonemes**

I'm not sure what's wrong with them. Is it because I just typed one t instead of 2?
*March 12, 2013*

**Phonemes**

I just wanted check my phonemes' division cow -c/ow (2 phonemes) tree- t/r/E (3) shopping - sh/o/p/i/ng (5) matter - m/a/t/e/r/ (5) gutters- g/u/t/e/r/s (6) horse h/o/r/se (4) car- c/a/r (3) chart /ch/a/r/t (4) see - s/e (2) saw- s/aw (2) sawing- s/aw/i/ng (4) savings- s/a...
*March 12, 2013*

**American History**

Thank you!!
*March 10, 2013*

**American History**

What was the political goal of the Soviet Union following the end of WWII?
*March 10, 2013*

**Spelling**

ok, thank you.
*March 3, 2013*

**Spelling**

Here are the words that I have to unscramble to form a sentence. It seems like it might be missing a word. disease contagious could not he doctor his conceal from... I can only come up with a sentence if I add an extra "his". The rules do not say to add an extra word...
*March 3, 2013*

**Math**

How much interest will I pay on a £115000 mortgage over 22 years at 4.83% Your kind cooperation would be much appreciated
*March 1, 2013*

**chemistry**

Just kidding. I'm stupid. I converted psi to mmHg and not atm to mmHg instead.
*February 20, 2013*

**chemistry**

questions**
*February 20, 2013*

**chemistry**

What is the pressure in millimeters of mercury of 0.0115mol of helium gas with a volume of 211ml at a temperature of 25 degrees celsius? Ok so I've come up with many different answers but none are right. You convert the mL to L and the temperature to Kelvin by adding 273 ...
*February 20, 2013*

**Chemistry**

Ok thank you so much!
*February 20, 2013*

**Chemistry**

How many moles of gas must be forced into a 4.8L tire to give it a gauge pressure of 30.8psi at 30 degrees celsius? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.5L so that the total pressure in the tire is 45.3psi. What formula...
*February 20, 2013*

**Physical Science**

How many CH4 molecules are contained in a 50gram sample of CH4 gas?
*February 12, 2013*

**Algebra**

What is the fourth root of 4^4^4? A long wire is cut into three smaller pieces in the ratio 7:3:2. If the shortest piece is 16 cm, what is the area of the largest rectangle that can be created using the longest piece? Find the value of x in the equation 2013^2013 - 2013^2012= ...
*February 7, 2013*

**algebra**

UCLA
*January 30, 2013*

**math**

there are two numbers that are 3 times as far from 19 as they are from 11. the sum of the two numbers is?
*January 24, 2013*

**American History**

Okay thanks so much Ms. Sue!
*January 9, 2013*

**American History**

Did the Soviet Union gain or lose land as a result of the Versailles treaty? or was Germany the only country involved?
*January 9, 2013*

**math**

2 boats left the harbour at the same time. One travelled at 10km/h on a course of 47 degrees. from the north. the other travelled 8km/h on a course of 79 degrees. how far apart were the boats after 45 minutes to th nearest tenth of a kilometre.
*December 8, 2012*

**math**

calculate the area of a triangle with side lengths 83.75, 110.65, and 90
*December 8, 2012*

**math**

factor, 4x^2-8xy-5y^2
*November 30, 2012*

**math**

factor 9-900f^2
*November 30, 2012*

**math**

factor 9-900f^2
*November 30, 2012*

**math**

A rectangle has an area about 225m^2. the width is about 40m less than the length. Find the approximate dimensions of the playing surface. use factoring.
*November 30, 2012*

**math**

for the line segment DE one edpoint is D(3,1) and the midpoint is M (0,-4). find the coordinates of endpoint E.
*November 30, 2012*

**Chemistry**

So I'm not exactly sure how to answer this problem. NaC2H3O2 is soluble Express your answers as ions separated by a comma. If the compound is not soluble, enter noreaction
*November 13, 2012*

**EnglishIII**

Would this be an o.k. sentence to use in my essay? This would still be the closest I had ever been to someone with their name used in the same sentence as the word “famous.” Or should I just say, "This would still be the closest I had ever been to someone famous...
*November 5, 2012*

**EnglishIII**

Ah Yay! Thank you (:
*November 4, 2012*

**EnglishIII**

I'm sorry to bother again but would this work? Despite my eagerness for the day to end, I was excited about the “surprise” guest the school had booked to make this day special for our graduating class.
*November 4, 2012*

**EnglishIII**

Ok, thanks so much Ms. Sue!
*November 4, 2012*

**EnglishIII**

I'm writing an essay and was wondering if this part was okay. I was eager for this day to end and summer begin. Despite my eagerness, I was excited about the “surprise” guest the school had booked to make this day special for our graduating class. Should I just ...
*November 4, 2012*

**Narrative Essay**

Could someone give me some good tips in writing a narrative essay about a certain memory or experience? Tips like, how to realize when there's too much detail and what are common faults in a highschooler's narrative?
*November 4, 2012*

**geology**

585 1843 3660
*October 27, 2012*

**Chemistry**

For 2 SO2(g) + O2(g) 2 SO3(g), Kp = 3.0 104 at 700 K. In a 2.00-L vessel the equilibrium mixture contains 1.58 g of SO3 and 0.136 g of O2. How many grams of SO2 are in the vessel?
*October 20, 2012*

**real-life step function**

So if I wanted to do a step-function graph for gas prices, how would that work? I'm a little confused. Could someone give me examples please? That would be so helpful (: Thanks!
*October 16, 2012*

**chemistry**

Please be specific! Briefly explain whether each if the following procedural errors would result in a high, low, or an unchanged calculated mass of Ca2+ in the analyzed tablet. a)a student had difficulty decanting the supernatant solution from the test tubes in step 9, causing...
*October 15, 2012*

**English III Archetype**

what is the archetype in the story of Ishmael? Here's my summary. Abram and Sarai were unable to have children. Sarai was barren. In order to build a family, she allowed her slave Hagar to become Abram’s wife. Abram slept with Hagar and she became pregnant. This led ...
*October 3, 2012*

**chemistry**

**1.4 grams of protons
*September 30, 2012*

**chemistry**

What mass of electrons would be required to just neutralize the charge of 1.4 of protons?
*September 30, 2012*

**English III**

I'm a weirdo.
*September 28, 2012*

**English III**

how would you use the allusion "Manna" in a sentence?
*September 28, 2012*

**Honors chemistry**

You need to boil 307 g of water (specific heat = 4.184) so you can make a cup of your favorite drink. If room temperature is 20.15 oC, how much heat is needed to boil the water?
*September 23, 2012*

**Algebra**

Thank You!! i see what i did wrong now... i wanted to find out what the percentage for 64 was so i divided it by 100 so i got a really diffrent and wrong number! Thanks for clearing this up for me! ;)
*September 20, 2012*

**Algebra**

I'm totally confused help please?!? In 1990, 253 million people visited theme parks in the United States. In 2000, the number of visitors increased to 317 million people. What was the percent of increase?
*September 20, 2012*

**Physics**

A car goes around a curve on a road that is banked at an angle of 33.5 degrees. Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 22.7 m/s. What is the radius of the curve?
*September 19, 2012*

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