Tuesday

May 3, 2016
Total # Posts: 1,154

**AP Chemistry**

Calculate the volume of a 36% solution of hydrochloric acid (density = 1.50g/mL, molar mass = 36 g/mol) required to prepare 9 liters of a 5 molar solution. A. 1 liter B. 2 liters C. 3 liters D. 4 liters E. 5 liters
*September 15, 2011*

**Math**

what is 1/2 or 1 over 2 multiply by 6?
*September 13, 2011*

**math**

explain how you can tell without multiplying that 700 * 60,000 and 7,000 * 6,000 have the same value.
*September 12, 2011*

**math**

the side of a square is 2 meters long. what is the area of the square? what is the perimeter of the square in centimeters?
*September 12, 2011*

**math**

researchers discovered a large group of krill that was more thatn 30,000 feet long. About how long is 30,000, measured in the number of krill? Adult Antarctic krill are about 2 inches long.
*September 12, 2011*

**math**

suppose a penguin eats about 5 pounds of krill a day. about what number of krill does the penguin eat in 100 days? (hint: 1 pound=16 ounces) 30 antarctic krill weigh about 1 ounce altoghter.
*September 12, 2011*

**math**

adult antaarctic krill are about 2 inches long.
*September 12, 2011*

**math**

Researchers discovered a large group of krib that was more than 30,000 feet long. About how long is 30,000 feet, measured in the number of krill?
*September 12, 2011*

**math**

30 antartic krill weigh about 1 ounce altogether.
*September 12, 2011*

**math**

suppose a penguin eats about 5 pounds of krill a day. about what number of krill does the penguin eat in 100 days? (hint: 1 pound =16 ounces.)
*September 12, 2011*

**Government**

d
*September 11, 2011*

**Comm 100 college**

When Keri wanted Ben to stop talking, she averted her eyes and turned her back. The function of this behavior was to ________. illustrate display emotion adapt regulate interaction
*September 9, 2011*

**math**

the function y=20x shows the amount of money in Marcy's bank account after x weeks. How much money will be in the account after 6 weeks?
*September 1, 2011*

**math**

use the ruler and the equation to make a function table. rule: multiply by 7. p times 7 = r
*September 1, 2011*

**geometry**

Stupid logic problem: At the state basketball tournament, 42 basketball games are played to determine the winner of the tournament. After each game, the loser is eliminated from the tournament. How many teams are in the tournament?
*August 31, 2011*

**math**

simplify by combining like terms. then solve. 8m+3m=55 x+2x=30
*August 30, 2011*

**math**

each variable represents one number. find the value of each variable. a+5=11 a-b=2 3xc=12 c divide d=4
*August 30, 2011*

**math**

each variable represents one number. find the value of each variable. x+4=9 3+y=x
*August 30, 2011*

**math**

use properties and mental math to find the value. (10times8)times3 8times(3times5) (36+42)+24
*August 29, 2011*

**math**

use propertise and mental math to find the value. 19+(28+21) 3 times 270 (86+27)+3
*August 29, 2011*

**math**

round 7,596,459,456 hundreds thousand
*August 24, 2011*

**math**

round 7,596,459,456 to the place named ten thousands millions hundreds thousand
*August 24, 2011*

**math**

find the range the answer will be within 6,473+3,234=9,707 and the range is 3239 do i add 6,473+3,234=9,712
*August 24, 2011*

**math**

find the range the answer will be within 6,473+3,234 32,959+15,568 79,484+8,933
*August 24, 2011*

**math**

name the place to which each number was rounded. 76,960 to 77,000 687,684 to 690,000 1,284,955 to 1,284,960
*August 24, 2011*

**math**

estimate using compatible numbers or other methods. estimate by rounding 123,786-82,004=
*August 24, 2011*

**math**

estimate using compatible numbers or other methods. 90,203+87,392=
*August 23, 2011*

**math**

front-end estimation to find and estimate for 4,381+321+6,918
*August 23, 2011*

**math**

wendi went biking 4 days last week. the longest distance she rode in one day was 7 miles, and the shortest distance she rode was 3 miles.what is a reasonable total number of miles wendi biked during the 4 days?
*August 23, 2011*

**painting**

a painting is 3 feet wide and 2 feet long. what is its area?
*August 23, 2011*

**com/155**

start me off.
*August 11, 2011*

**accounting**

Valmont, Inc. experienced the following events in 2012, in its first year of operation. 1. Received $20,000 cash from the issue of common stock. 2. Performed services on account for $50,000. 3. Paid utility expense of $12,500. 4. Collected $39,000 of the accounts receivable. 5...
*August 7, 2011*

**chemistry**

describe how one can obtain pure oxygen by fractional distillation of liquedfied air
*August 4, 2011*

**chemistry**

suppose 5.00g of sodium carbonate reacts completely with excess of hydrochloric acid. Show how to calculate the mass (g) of sodium chloride that would be formed. Na2CO3 + 2HCl = 2NaCl + CO2 + H2O What is the limiting reagent?
*July 21, 2011*

**algebra**

2. The equation relates the radius r of a drainpipe in inches to the flow rate F of water passing through it in gallons per minute. a. Find the radius of a pipe that can carry 600 gallons of water per minute. Round to the nearest tenth. (Let ) b. Solve the following equation ...
*July 11, 2011*

**government**

What was the most common religious affiliation in the 108th Congress? Protestant Jewish Roman Catholic Non-religious
*June 30, 2011*

**Health Promotion and Education Interventions in Di**

Describe the leadership principles and skills needed to develop a health promotion project.
*June 29, 2011*

**Statistics**

: For each of the following samples that were given an experimental treatment, test whether these samples represent populations that are different from the general population: (a) a sample of 10 with a mean of 44, (b) a sample of 1 with a mean of 48. The general population of ...
*June 15, 2011*

**Algebra**

What are some rational equation applications used in forensics or crime scene investigation?
*June 15, 2011*

**Organic Chemistry**

What will be the result when ketone is added with ethylene glycol and TsOH?
*June 9, 2011*

**Algebra 2/ trig**

sin theta= 7/25, 0< theta < pi/2 cos beta=8/17, 0, beta, pi/2 Find(theta+ beta)
*June 1, 2011*

**Science**

try searching on websites that is what i did
*May 21, 2011*

**medical claims and billing**

Kathy, a 33 year old established patient sees Dr. Owens in her office for what she thinks is a sinus infection. Her history and exam are both expanded problem focused with the decision of making low complexity. Her diagnosis is acute sinusitis. What is the CPT Code and ICD-9-...
*May 16, 2011*

**physics**

when i was doing it ... everything was alright until the last part... (28 = 3.5 Vbig^2 --> Vbig = 2.828 m/s <-- Q = Area big* Vbig = .00229 m^2 * 2.828 m/s = .00647 m/s = 6.047 cm/s
*May 9, 2011*

**maths**

Thanks! I've no idea, i thought my answr was too far off but I was using the wrong formula. Thanks!
*May 8, 2011*

**maths**

In the year 2000 there were 350 mobile phones users living in the small town of Phoneville. Since 2000 the number of residents using mobile phones has increased by 25% each year, that is, each year the number of mobile phones increases by a factor of 1.25 Calculate, to three ...
*May 8, 2011*

**physics**

7.5 m/s
*May 7, 2011*

**government**

Why are political parties created?
*April 28, 2011*

**music **

The form of the melody called the bar form is represented by A)AAB B)ABB C)ABA D)ABBA
*April 26, 2011*

**AP Statistics**

Viruses are infectious agents that often cause diseases in plants. Different viruses have different potency levels, and this fact can be used to detect whether a new virus is infecting plants in the field. In a potency comparison experiment, two viruses were placed on a ...
*April 24, 2011*

**Physics**

Still stuck...see post at 3:34pm. I don't think I'm understanding the instructions regarding what #'s to use for sin and cos.
*April 23, 2011*

**Physics**

The answer is supposed to be 16.5N. I can't get it. Is angle A, 100deg? I took 0.80/2.5 = .32 and then cos (.32) = .9999deg. And then in the final equation, for sin A I got sin (100deg) = 98.4. This doesn't seem right.
*April 23, 2011*

**Physics**

Q #2: (only other one I'm stuck on...) A 10-kg ladder 2.5m long rests agaist a frictionless wall with its base on the floor 80cm from the wall. How much force does the top of the ladder exert on the wall? I've found answers to similar questions on this site, but not ...
*April 23, 2011*

**Physics**

A 30-lb weight is attached to one end of a 6-ft uniform beam whose own weight is 20-lb. Where is the balance point? Thanks in advance.
*April 23, 2011*

**Physics**

A 100-kg box is suspended from two ropes; the left one makes an angle of 20degrees with the vertical, and the other makes an angle of 40degrees. What is the tension in each rope. I think I've got the basics: I have Fx=T1(x) + T2(x)= 0 to calc the first tension, and Fy= T1(...
*April 22, 2011*

**Physics**

A 30-lb weight is attached to one end of a 6-ft uniform beam whose own weight is 20-lb. Where is the balance point of the system? I know the answer is "1.2 ft from the 30-lb weight" but I can't figure out how to get there. Please help. Thanks...
*April 22, 2011*

**Algebra 1**

Thank you very much.(:
*April 21, 2011*

**Algebra 1**

Can someone please help me?!?! This is solving for x & y. And it so complicated to me.! And worst of all I have a test on it tomorrow.! D:<
*April 21, 2011*

**Algebra 1**

You drive a car that runs on ethanol and gas. You have a 20-gallon tank to fill and you can buy fuel that it is either 25 percent ethanol or 85 percent ethanol. How much of each type of fuel should you buy to fill your tank so that it is 50 percent ethanol?
*April 21, 2011*

**Music**

Von Bingen's Play of Virtues is set to which of the following types of music?
*April 20, 2011*

**music**

In plainchant, a sentence of text almost always ends with
*April 20, 2011*

**music**

A)was easily understood by the listener B)conveyed happiness C)want't monotonous D)had enjoyably rhythm
*April 20, 2011*

**music**

Landini's tendency to intersperse occasional melismas in text that was generally syllabic in nature helped to ensure that the music
*April 20, 2011*

**Science**

calculate the mass of sodium nitrate in grams in a 150 ml solution of a 5.00 M solution of sodium nitrate
*April 19, 2011*

**math/115**

evaluate -|-618| please help me, I just dont get it
*April 14, 2011*

**Chemistry**

I had to miss a lab yesterday. Do you know of a website where I can virtually prepare methyl salicylate (oil of wintergreen)? The experiment involves salicylic acid + methyl alcohol + concentrated sulfuric acid + heat....then when two layers form collect the top layer and ...
*April 13, 2011*

**physics**

"The mass density of brain matter is 1.040 g/cm^3, and of that, the mass fraction which is hydrogen, is 0.107. Find the number of hydrogen protons in a volume of 1cm^3 of brain tissue"
*April 11, 2011*

**physics**

We couldn't find "The mass density of brain matter is 1.040 g/cm^3, and of that, the mass fraction which is hydrogen, is 0.107. Find the number of hydrogen protons in a volume of 1cm^3 of brain tissue"
*April 11, 2011*

**chemistry **

how do you make 1.00g of NaC2H3O2 using: 0.400 M Na2Co3 0.300 M Pb(C2H3O2)2 NaOH solution with unknown molarity 0.500 M HC2H3O2 You dont have to use all of them
*April 6, 2011*

**freedom similes and metaphors?**

As free as the mind with imagination.
*April 3, 2011*

**science**

How many grams of oxalic acid dihydrate (H2C2O4) are needed to react with 38.56 ml of 0.2500 sodium hydorxide
*March 31, 2011*

**Chem**

Given this reaction: Pb(NO3)2 + 2 KCl --> PbCl2 + 2KNO a. How many milliliters of 2.00 M Pb(NO3)2 will react with 50.0 mL of 1.50 M KCl
*March 31, 2011*

**MATH**

If 20% of population have blue eyes, and 5 people are selected at random, what is the probability that at least 4 of them have blue eyes? HOW DO I FIND THE SOLUTION TO THIS PROBLEM?
*March 25, 2011*

**trig**

Evaluate each value as a trigonometric function of an angle in Quadrant 1. #1 cos (27pi/8)
*March 22, 2011*

**Dividing Decimals**

I dont get It neuther
*March 14, 2011*

**Dividing Decimals**

1.55
*March 14, 2011*

**PHI103:Informal Logic**

Grading Summary These are the automatically computed results of your exam. Grades for essay questions, and comments from your instructor, are in the "Details" section below. Date Taken: 8/16/2012 Time Spent: 47 min , 28 secs Points Received: 25 / 25 (100%) Question ...
*March 7, 2011*

**Biology**

The human retina has an area of about 1000 mm^2. If we have a total of 125 million rods and 6.5 million cones in each eye, show that we have about 131,500 sensory cells per square millimeter in the retina.
*March 3, 2011*

**Math**

Jim bought a pair of shoes for $50 and laces for $1. If the sales tax is 7%, how much tax must he pay?
*March 2, 2011*

**physics**

Lance threw a ball straight up into the air. The ball's gravitational potential energy at its peak height was 0.4 joules, and its speed when it hit the ground was 4 meters per second. What was the mass of the ball?
*March 2, 2011*

**Microbilogy**

Albert Kluyver "From elephant to...bacteria-it is all the same!" What did he mean?
*March 1, 2011*

**Statistics**

The probability that a football game will go into overtime is 20%. What is the probability that two of three football games will go to into overtime? A) 0.384 B) 0.2 C) 0.04 D) 0.096
*March 1, 2011*

**english**

lol, Writeacher-I missed that one myself, and usually don't! My mom taught me more than the teachers in school did about English and spelling, so I feel like a dolt for missing it!!
*February 24, 2011*

**english**

I'm no teacher or tutor, but wouldn't the word "so" work to join them?
*February 24, 2011*

**Microbiology**

People with Rhinovirus infections of the nose and throat have an 80-fold increase in kinins and no increase in histamine. What do you expect for rhinoviral symptoms? What disease is caused by rhinoviruses?
*February 24, 2011*

**Microbiology**

People with Rhinovirus infections of the nose and throat have an 80-fold increase in kinins and no increase in histamine. What do you expect for rhinoviral symptoms? What disease is caused by rhinoviruses?
*February 24, 2011*

**Chemistry**

Write an equation for the reaction that takes place when LiOH is added to water.
*February 23, 2011*

**Microbiology**

Alright then, thank you-I'll try looking for what you said and go from there. I don't need a great big answer for this-just a sentence or two.
*February 23, 2011*

**Microbiology**

Ugh, believe it or not, this is a "glossing over" of the subject-the book I have doesn't even go chapter-by chapter. It starts with chapter 1, and skips to 5! After that, it goes from 7 to 10. The whole book might be 20 chapters, but not chronological-they skip. ...
*February 23, 2011*

**Microbiology**

Thanks! would that be the anser though, to that question as well?
*February 23, 2011*

**Microbiology**

I don't know what those are-I'm just struggling to get through this little bit of Science for a college course.
*February 23, 2011*

**Microbiology**

Gram stains and acid-fast stains of pus showed gram-positive acid-fast rods. What are the possible organisms?
*February 23, 2011*

**College Algebra**

1=(X-100)/((X+100)/2)) / ((2-1)/((2+3)/2) Solve for X I know X =200, but don't understand how to reach that anwser.
*February 21, 2011*

**COM/155**

Last night I took my daughters to go see Justin Bieber, Never Say Never movie. Its about a 16-year-old pop star’s FIRST(adj) concert film. It also EXPLORES(adj) Justin’s personal journey to a sold out concert in Madison Square Garden last year. It details how Justin...
*February 20, 2011*

**COM/155**

Use at least five adverbs and five adjectives to write a brief review of a movie, sporting event, musical performance, or television show. I wrote my movie review but im really confused on which ones are adjectives and which ones are adverbs. could you please help me? Last ...
*February 20, 2011*

**english**

What can hold six gallons of water, be found in a survival kit, and be the size of my foot? (I wear a size 6 to 7.5 in shoes)
*February 17, 2011*

**Survey of the Sciences**

a typical cell in the body makes about 10 million molecules of atp per second. show that the cell breaks down about 263,258 molecules of glucose per second.
*February 15, 2011*

**math**

The house numbers on Carr Memorial Avenue follow a pattern.The first four houses on the left side of the street are numbered 8,14,20,and 26.How many more houses are on the left side of the street with numbers less than 50
*February 15, 2011*

**calculus**

no you can't find the y calues by using the equation to the tangent line because of the missing values for a, b and c. the first derivative is 2Ax+B so obviously that doesnt work out. but when we set it equal to zero, which we are supposed to do when we know all the values...
*February 10, 2011*

**calculus**

Let f(x)= Ax^2 + Bx + C. If f(x) passes through the point (-1,1) and has a relative minimum at (1,-13), find A, B, and C.
*February 10, 2011*