Thursday

December 18, 2014

December 18, 2014

Total # Posts: 37

**Chemistry - University **

Pentane (C5H12) and hexane (C6H14) form an ideal solution. The vapour pressure of pentane at 25oC is 511 mmHg and that for hexane is 150 mmHg. A solution is prepared by mixing pentane (density = 0.63 g/mL) and hexane (density = 0.66 g/mL). The mole fraction of hexane in the ...
*December 9, 2014*

**chemistry**

A mixture of 0.100 mol NO, 0.200 mol H2 and 0.0800 mol N2 were placed in a 2.00L reaction vessel, heated, and allowed to come to equilibrium conditions. At equilibrium, the molar concentration of N2 was 0.0500 mol/L. Calculate Kc for this reaction. 2NO + 2H2 <---> N2 + ...
*July 18, 2014*

**Math**

Kurt cut pizzas into wedges measuring 40 degrees. If each person eats one piece of the pizza, how many people could he feed with with two whole pizzas?
*April 24, 2014*

**math**

"It takes Juwan exactly 35 minutes by car to get to his grandmother's. The nearest parking area is 4 minute walk from her apartment. One week he visited more often. He realized that he spent 5 hours and 12 minutes traveling to her apartment and then back home. How ...
*December 5, 2013*

**Algebra 2**

One bottle contains 2 1/2 times as much water as another bottle. The larger bottle contains 15 ounces. How much does the smaller bottle contain?
*September 12, 2012*

**algebra 2**

A company wants to make ball bearings that have a standard diameter, d, of 24.000 mm. Acceptable ball bearings measure within ± 0.025 mm of this standard. Determine the solution set for the diameter of these ball bearings
*July 23, 2012*

**algebra 2**

The MePhone, a new smartphone, is being introduced in the Louisville area. The manufacturer plans to sell 30,000 phones during the first week and expects sales to increase by 8% each week after that find the equation, determine if its aritmetic or geometric, wk 0 is 30,000 wk ...
*July 23, 2012*

**algebra 2**

1)In how many different ways can you roll doubles in a monopoly game when you use two die 2)caterer offers a choice of five desserts from a list of eight for the dessert bar at the prom. How many different groups of desserts could be served?
*July 21, 2012*

**algebra 1 **

The bag contains three red marbles, two blue marbles, and seven yellow marbles. Two marbles are randomly drawn from the bag. What is the probability of drawing a blue marble, replacing it, and then drawing a yellow marble
*July 21, 2012*

**algebra 2**

The red spinner has six equal sectors labeled with numbers 1 through 6. The blue spinner has four equal sectors labeled with letters A, B, C, and D. Find the probability of spinning the two spinners and getting a number less than three with a B or D.
*July 21, 2012*

**geometry**

Rectangles A and B are congruent. The base of rectangle A is 5 inches more than its height. The height of rectangle B is 12 inches. What is the base of rectangle A?
*February 16, 2012*

**math third grade**

There are 40 people at a picnic. There are 4 more children than adults. How many of each are there?
*December 13, 2010*

**fractions**

um....... lol
*December 12, 2010*

**10th grade Chemistry**

What is the hydroxide ion concentration in a solution with [H3O+] = 7.67*10^-9 M?
*December 8, 2010*

**calculus**

The treatment of a certain viral disease requires a combination dose of drugs D1 and D2. Each unit of D1 contains 1 milligram of factor X and 2 milligrams of factor Y, and each unit of D2 contains 2 milligrams of factor X and 3 milligrams of factor Y. If the most effective ...
*June 25, 2010*

**ap enviro**

okay are you sure its correct though?
*November 29, 2009*

**ap enviro**

how does nutrition suitability affect a plant's being eaten by animals ......is it more likely to be eaten or less likely and why? in my opinion i think its less likely to be eaten because if its low in nutrition then animals wont be as drawn to it
*November 29, 2009*

**spanish**

how is the dog
*November 16, 2009*

**ap enviromental**

for a very long time, prokaryotes were the only living creatures on earth. how long a period? i would appreciate a straight answer please!!!
*November 12, 2009*

**pre calculus**

were doing sum and difference identities tan (225 degrees+60 degrees) i got to the part where its 1+radical 3/1-radical 3 ..now what?
*November 12, 2009*

**social studies**

What causes wild fires?
*September 21, 2009*

**Geography**

Sorry those words didnt help! I need simple ones! Again I need a geography term that starts with the letter Y that is not a place or river.
*September 1, 2009*

**Geography**

What is a geography term that starts with the letter Y that is not a place or river?
*September 1, 2009*

**eng vocab: attitude**

i need an example of attitude in literature
*August 30, 2009*

**pre calc**

thank you!
*August 30, 2009*

**pre calc**

okay but dont you have to multiply the (1250+6400) by pi and 2 then divide that by 90? i got 534.07 as an answer
*August 30, 2009*

**pre calc**

an earth satellite in circular orbit 1250 kilometers high makes one complete revolution evry 90 min. What is it linear speed? use 6400 kilometers for the radius of the earth.
*August 30, 2009*

**trig**

oh btw the last part is to to find if they are inverse functions
*April 22, 2009*

**trig**

verify that f(x)= -2x+4 and g(x)= -1/2x+2 .....HELP! i totally blanked on this one :(
*April 22, 2009*

**kings speech from birmingham jail**

can i have a stright answer plzzzz i dnt get this at all
*March 3, 2009*

**kings speech from birmingham jail**

Does king consider himself an :outsider" by staging a civil rights protet in Birmingham? List three resons he gives in response to this criticism.
*March 3, 2009*

**eng-a modest proposal**

no it didnt really help but thnx anyway :)
*February 16, 2009*

**eng-a modest proposal**

um okay i need help plz can u just give me a straight answer? ive had like 10 of these questions 1 Beneath his irony what is swift's argument? and 2 Comment on the statement "I can think of no one objection that will possibly be raised against this proposal" (...
*February 16, 2009*

**english-kite runner book**

1. The relationship between amir and hassan is, in some ways, intended to highliht the contrast between the shiite sunni sects. Describe four elements of social contrast between these two groups. 2.hosseini used irony in comparing life in california to that in afghanistan. ...
*March 25, 2008*

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