Friday

February 24, 2017
Total # Posts: 304

**Chemistry - Equilibrium**

You have an unknown concentration of ammonia. When you add 15.0mL of a 0.400 M HCl solution to 50.0mL of the ammonia solution, the pH of the solution becomes 8.75. What is the concentration of the original ammonia solution? [Kb (NH3) = 1.8 x 10^-5]

*April 25, 2012*

**math**

only 5% of the carbon-14 in a small wooden bowl remains , how old is the bowl? Hint, half-life for carbon –14 us 5730 years

*April 4, 2012*

**math 125**

solve the system 2x-3y-z=-8 x-y--z=-2 -4x+3y+z=6

*March 24, 2012*

**physics**

A certain spring stretches 5.0cm when a load of 40N is suspended from it. How much will the spring stretch if 46N is suspended from it(and it doesn't reach its elastic limit)?

*March 22, 2012*

**math**

how would you solve: (t-2)(3t-1)(4t+3)-(2-t)(2-t)(t+5)

*February 26, 2012*

**biology**

Can someone please explain to be the concept of - Rate of exchange is proportional to a cells surface area and ... the amount of exchange material is proportional to a cell's volume. (the topic we are learning is called "Animal form and function")

*February 14, 2012*

**Languages**

How do you say the word "love" and "kind" is many languages. (the language doesnt matter, a list would be great)

*February 12, 2012*

**algebra**

2w -4 = l 2w +2l = 172 plug in for l and find w. then plug in w to find l then a=lw

*February 4, 2012*

**Pre-Algrebra**

1. first distribute 2(m+3) = 2m + 6 then add like terms together 3m + 6 = 78 then sub. 6 3m= 72 last divide by 3 m=24

*February 4, 2012*

**History- spanish**

thanks

*February 4, 2012*

**History- spanish**

i already searched that under google and most of the sites only showed and described a certain painting of his. And no i couldn't find it. It doesnt say this birthname was anything different than Jose antonio Velazquez so is that it??

*February 4, 2012*

**History- spanish**

What was Jose Antonio Velazquez's birth name? I do not know if that is his birth name

*February 4, 2012*

**science**

I have a test tomorrow and i need to be able to say what type of bacteria something is in their agar colonies. I am having a hard time diffirentiating between bacillus cereus and bacillus subtilis. does anyone have any good websites that would help? or know any tricks?

*January 31, 2012*

**science**

what does oxytetracycline contain that would destroy bacillus cereus

*January 29, 2012*

**Physics**

The Victoria Falls is the tallest waterfall on Earth measuring 108 meters at its highest point. How long will it take for a single drop of water to fall over its edge into the chasm below? Please check answer, if I am doing it incorrectly help me set it up. the last person who...

*January 28, 2012*

**PHYSICS**

The Victoria Falls is the tallest waterfall on Earth measuring 108 meters at its highest point. How long will it take for a single drop of water to fall over its edge into the chasm below?

*January 27, 2012*

**english**

I have a four page paper I have written for a scholarship. It is still in its rough draft. Would anyone be willing to proof read it?

*January 26, 2012*

**Misc.**

is there a site online that i can find it?

*January 25, 2012*

**Misc.**

How do you know what township you are in?

*January 25, 2012*

**chemistry**

treatment of a 0.3203g sample of impure soduim chloride with an excess of AgNo3 resulted in the formation of 0.7331g of AgCl. how many grams of sodium chloride were in the sample? What is the weight percentage of NaCl in the sample?

*January 24, 2012*

**chemistry**

treatment of a 0.3203g sample of impure soduim chloride with an excess of AgNo3 resulted in the formation of 0.7331g of AgCl. how many grams of sodium chloride were in the sample? What is the weight percentage of NaCl in the sample?

*January 24, 2012*

**chemistry**

treatment of a 0.3203g sample of impure soduim chloride with an excess of AgNo3 resulted in the formation of 0.7331g of AgCl. how many grams of sodium chloride were in the sample? What is the weight percentage of NaCl in the sample?

*January 24, 2012*

**Literacy**

Which Boolean operator limits your search so that each term input must be in the same document

*January 21, 2012*

**Math**

At the school store, colored pencils are reduced from $2.40 a box to $2.00 a box. What is the percent of decrease?

*January 6, 2012*

**bio**

thanks the peptidoglycan is pretty clear. but, do you think you could explain the difference between an exon and intron?? in more simple terms

*January 5, 2012*

**bio**

What are introns and exons? also what is a peptidoglycan( i hope i spelled that right)

*January 5, 2012*

**science**

hello! I need good sites that can help me with my physics class! do you have any ideas??

*January 4, 2012*

**Physics**

An airplane flies due north at 220 km/h with respect to the air. There is a wind blowing at 65 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?

*November 9, 2011*

**economics**

Market demand is given as QD = 200 â€“ 3P. Market supply is given as QS = 2P + 100. Each identical firm has MC = 0.5Q and ATC = 0.25Q. What is each firmâ€™s profit?

*November 3, 2011*

**economics**

A monopolist faces market demand given by P = 200 â€“ Q. For this market, MR = 200 â€“ 2Q and MC = 3Q. What quantity of output will the monopolist produce in order to maximize profits?

*November 3, 2011*

**geometry**

what is the value of x , if one lenght is 16, and the other one is 23

*October 17, 2011*

**Chemistry**

How much energy (in kcal) is needed to convert 53.2 g of water at 55.0 C to steam at 100.0 C

*October 4, 2011*

**Physics**

Two teams are having a rope pulling contest. Team A is pulling with a force of 2400 N at 135 and team B is 1550 N at 315. What is the resultant force?

*September 26, 2011*

**help please:)**

the answer is c

*September 25, 2011*

**Algebra**

Thanks! That's what I thought

*September 18, 2011*

**Algebra**

Hello, I have been trying a few ways to do this problem and am not having success. The sum of four consecutive odd integers is -212. Write an expression for the second, third and fourth odd integers. Use these expressions to write, and solve an equation to find the four ...

*September 18, 2011*

**professional communication**

explain the importance of five sentence starters that you can use in a professional presentation?

*August 24, 2011*

**physics**

A car moves at a constant speed of 24m/s. How long (in minutes) will it take to travel 15.0 km?

*August 10, 2011*

**physics**

a ball is released from rest and rolls down a slope. It covers 7.5m in 12.4s. Find the average speed of the ball in m/s and km/hr.

*August 10, 2011*

**physics**

A distance runner moves at a constant pace of 4.1m/s. how far (in m) does he move in 30 minutes?

*August 9, 2011*

**statistic**

solve the problem :score a test are normally distributed with a mean of 68.2 and a standard deviation of 10.4 estimate the probablility that among 75 randomly selected students, at least 20 of them score greater than 78

*July 21, 2011*

**College chemistry**

is dispersion force the strongest IM for Cl2

*July 1, 2011*

**Math**

Part of 26000 invested at 4% interest and the rest at 2% interest yields 680.00

*June 20, 2011*

**grammar**

Although the abscess was incised and drained in the emergency room and cultures were obtained, which grew coag-positive staphylococcus.

*June 15, 2011*

**grammar**

5.After lengthy discussion, it was decided the patient would continue to be treated in the hospital. Is there any conjuction in this sentence.

*June 15, 2011*

**life orientation**

i dnt knw dat is y im asking plz help

*May 13, 2011*

**Life orientation**

Dnt knw them,i have choosen the topic of pollution.can u plz give me those answer

*May 2, 2011*

**English Honors - Tale of Two Cities**

Hello, I can't figure out the significance of the quote in Tale of Two Cities: "Drive him fast to his tomb". I know it signifies the beginning of the revolution but I'm not sure why.

*April 3, 2011*

**physics**

Two charged spheres are 8.00 apart. They are moved, and the force on each of them is found to have been tripled

*March 4, 2011*

**Physics**

A certain coiled wire with uneven windings has the property that to stretch it an amount s from its relaxed length requires a force that is given by , so its behavior is different from a normal spring. You suspend this device vertically, and its unstretched length is 19.0 cm. ...

*February 25, 2011*

**Advance Accounting**

How do I prepare a consolidated elimination worksheet when the parent purchases all of subsidiary's bonds on open market?

*February 20, 2011*

**Math**

Solve for X. X^3=27 x = 3 because 3 * 3 = 9 and 9 * 3 = 27. Correct? -------------------------------------- [x]= 16 X = 4^3 because 4 * 2 = 8 and 8 * 2 = 16. Correct? -------------------------------------- (x-2)^4=16 I need help on this one!

*February 14, 2011*

**Basic math**

Compute. 3/2 - 4 1/3 The answer I got was 4 2/1.

*February 11, 2011*

**theory of dressmaking**

what is disposal of fullness

*February 7, 2011*

**Math**

You have 48 yellow blocks and 40 green blocks. What is the greatest number of identical towers that you can build using all 88 blocks?

*February 6, 2011*

**math**

show how 30/56 is smaller than 5/7 and 6/8

*January 22, 2011*

**9th grade Math**

i need help with my homework

*January 22, 2011*

**Math**

Place the digits 2, 4, 5, 6, and 8 in the boxes to obtain (a) the greatest difference (b) the greatest product I came up with A. 865 - 24 B. 865 * 42

*January 19, 2011*

**Math**

E89QEH

*December 17, 2010*

**Math**

Six cards numbered 1 through 6 are placed in a hat. One card is taken from the hat. The unit's digit of the sum of the numbers on the remaining cards are 9. What was the number on the card taken from the hat?

*December 1, 2010*

**Family day care regualtions educational levels**

Put this in order from begining to last associates degree 40 hour training bachelors degree cda degree or FCCPC associates thanks

*November 28, 2010*

**Math**

Using the digits 0, 2,3 ,4 5, 6 make the largest 4 digit in terms of value that you can.

*November 21, 2010*

**ALGEBRA2**

COULD YOU PLEASE CLARIFY "EXPANDED VERTICALLY BY A FACTOR OF 3"? THANK YOU SO MUCH.

*November 12, 2010*

**social studies**

I THINK THEY WISH TO CONVERT ALL PEOPLE TO THEIR RELIGION, BUT PLEASE NOTE I AM NOT 100% POSITIVE ON THIS AND I DON'T WANT TO SPREAD ANY FALSE RUMORS! I SINCERELY WISH YOU THE BEST OF LUCK IN YOUR HOMEWORK ENDEAVOR!

*November 12, 2010*

**LIMIT(CALCULUS)**

YOU MIGHT WANT TO TRY PLUGGING IN THE TWO, AND THEN OF COURSE THE REST OF THE SOLUTIONS WILL BE GREATER THAN THE ONE YOU PUT THE TWO INTO. I SINCERELY HOPE THAT HELPS! *PLEASE NOTE I'M NOT 100% POSITIVE ON THIS! THIS IS JUST A SUGGESTION! I WISH YOU THE BEST OF HOPE!

*November 12, 2010*

**college physics**

Find the height from which you would have to drop a ball so that it would have a speed of 8.4 m/s just before it hits the ground.

*October 28, 2010*

**statistics/probability**

describe the sample space for a spinner with four equal sections of blue, red, green and yellow.

*October 23, 2010*

**chem 121**

We did a lab separating out the components of a mixture. One of the lab questions is "The weight of naphthalene was obtained by weighing the collected solid. Was this an accurate weight of the naphthalene present in the original sample?" I don't know how to ...

*October 17, 2010*

**Science**

A boy walks a total distance of 210 km due North. His starting position is at 20 km and his final position is 34 km. If it takes him 3 hours and 20 minutes to make this trip, what is his total velocity? What is his speed?

*October 6, 2010*

**math**

if $1747.56 is including HST, what is that price without the HST?

*October 3, 2010*

**History**

Describe Sumerian religious practices

*September 29, 2010*

**civics**

who are some good citizens? for example terry fox or mother teresa. i need people other than them

*September 9, 2010*

**science**

2.64*10^-5

*September 9, 2010*

**science**

A 0.513 M solution of a weak base has a pH of 11.4. What is the Kb of the base?

*September 9, 2010*

**chemistry**

A 0.010 M solution of aspirin, a weak monoprotic acid, has a pH of 3.3. What is the Ka of aspirin?

*September 9, 2010*

**math**

what precent of 3.5 is 7.2? show your work please.

*August 24, 2010*

**us history**

is there any one out there to help me

*June 20, 2010*

**us history**

a time line tracking the major themes/paradigm shifts in American History from the Columbus's voyages through the Mexican-American War (1846-1848).

*June 20, 2010*

**Finance**

I am very lost with this assignment can someone please help me. I just need one sample thank you. The Lanford Corporation had 2008 sales of $110 million. The other pertinent financial data for 2008 is as follows: 2008 Sales $110,000,000 Dividend Payout Rate 55% Balance in ...

*May 11, 2010*

**Math**

I remember that math question from Axia... MAT 115 final. That was an easy A.

*May 5, 2010*

**general**

why did you came up with 11.49% when the calculator gives 0.115310 and so on?

*May 4, 2010*

**general**

Can you please tell me what is the Percentage of 250,800.00/2,175,000 I have 11.53% is this correct.

*May 4, 2010*

**Business communication**

How do you write a positive message for a business that is going to have less work days and shorter hours?

*April 30, 2010*

**english**

thanks:)

*April 18, 2010*

**english**

oh ok thank you:)

*April 18, 2010*

**english**

It's about the personality differneces between two characters in a novel

*April 18, 2010*

**english**

um yes it could be a sentence or a few but it comes before the thesis statement too.

*April 18, 2010*

**english**

well no one else seems to know so i guess its just my english teacher. thanks anyway though

*April 18, 2010*

**english**

i don't get how to write a motivator for an expository essay?

*April 18, 2010*

**3rd grade**

r=red g=green r=g-5

*April 18, 2010*

**math**

how do you solve (and show your work for): 5-2x=7

*April 15, 2010*

**Math**

1 out of 6

*April 15, 2010*

**english**

thank you!:)

*April 13, 2010*

**english**

a sniper is someone in a war who has to shoot people from really far distances. and i have already done this and handed it in and then my teacher gave it back and told me to give it a better title and edit some other things and i have already done that

*April 13, 2010*

**english**

i need to write an expository paragraph about characterisitcs of a sniper. any good ides for a title???

*April 13, 2010*

**Algebra**

When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -10t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height in meters...

*February 19, 2010*

**physics**

A charge of 4.10 is placed at each corner of a square 0.100 on a side. Determine the magnitude of the force on each charge. Determine the direction of the force on each charge. Assume that the positive x-axis is directed to the right.

*February 16, 2010*

**Math**

How do you solve this. The answer is suppose to be 8x+5 and when I do the problem my answer is nowhere near the correct answer. 5{x-(3-x)+4}-2x

*February 10, 2010*

**math**

how do you convert a fraction into a decimal? and vice versa?

*February 2, 2010*

**math**

i just started this semester of math and i don't remember that if your adding mixed fractions are you supposed to chage it into an improper fraction to add it?

*February 2, 2010*