Monday

May 30, 2016
Total # Posts: 1,254

**Chemistry 12**

do your own homework.
*May 22, 2011*

**chemistry**

i reallly need help with combining the gas laws. here are a few questions i am struggling with if anyone could please help! 1. A steel container holds 750.L of O2 gas at STP. a) how many moles of O2 does the container hold? b)how many grams of O2 does the container hold? c) if...
*May 22, 2011*

**chemistry**

thank you very much! if you could help me with this as well i would be very appreciative! A steel container holds 750.L of O2 gas at STP. a) how many moles of O2 does the container hold? b)how many grams of O2 does the container hold? c) if the pressure were reduced by ...
*May 21, 2011*

**chemistry**

i have two questions. 1. generally speaking, if the pressure of a gas is tripled, what will happen to its volume? 2. If I take 2000L of gas at STP and squish it into a gas 15.0L gas cylinder, what will be the pressure inside the cylinder, assuming the temperature is kept ...
*May 21, 2011*

**chemistry**

I need walked through this question, please. In testing for the efficacy of an antacid compound, 5.0g of hydrochloric acid is mixed with 24.0g of magnesium hydroxide. Is this enough base to react with all the acid?
*May 17, 2011*

**chemistry**

how do you know what the actual yield will be?!
*May 14, 2011*

**chemistry**

if unlimited iron is available to react with 34.0g of copper (II) chloride, how many g of copper metal would be produced?
*May 14, 2011*

**spanish**

ur mum
*May 9, 2011*

**math**

1) The vocabulary is confusing 2) You are stupid 3) 3 + 3.5 + 7 = 13.5
*May 9, 2011*

**math **

9 apples/ 14 students a ratio or a rate ?
*May 8, 2011*

**math**

28
*May 8, 2011*

**geometry 2**

32 × 32 28 × 28 24 × 24 20 × 20 16 × 16 12 × 12 8 × 8
*May 4, 2011*

**geometry 2**

Xenia is ordering a cake for her friend’s wedding. She knows that there will be 110 guests at the wedding, and she is trying to decide how large a cake to order. She has been told that each guest should get a piece of cake that is 4 inches by 4 inches. She would like to ...
*May 4, 2011*

**Program planning and evaluation**

Please respond to the following questions either by writing the design name or by describing the design using standard notation (X = program, O=observation, R= random assignment). For each design, please discuss all threats to internal validity. 1. a. Design: Single group ...
*May 1, 2011*

**physics**

Noob
*April 30, 2011*

**physics ---- really dnt get this at all**

noob
*April 30, 2011*

**physics**

noooob
*April 30, 2011*

**math probability**

12/15
*April 19, 2011*

**chemistry**

how many mL of 0.50 M ammonia would be needed to react with 1.0 L of 0.75 M HClO4
*April 18, 2011*

**xbis/219**

Ms. Sue, then don't answer the question. If you want to know then ask.
*April 1, 2011*

**Physics...help please!**

i dont know
*April 1, 2011*

**math/geometry**

Two boxes must be wrapped. Both boxes are right rectangular prisms. The smaller box has a length of 12 inches. The larger box is similar to the first and has a length of 48 inches. Find the ratio of the amount of paper needed to wrap the large box to the amount of paper needed...
*March 24, 2011*

**music appreciation**

The overture for A Midsummer's Night Dream is a one-movement work ________? a.in sonata form . b. famous for interplay of piano,violin and cello. c.known for massive sound of the orchestra. d. that presents the same musical idea in each strophe of the text. thank you
*March 18, 2011*

**PHYSICS**

You have to convert km to m
*March 15, 2011*

**geometry**

Suppose line AB is parallel to line MN.Name all angles congruent to angle 8. In the figure at the right, x is parallel to y.List all angles that are congruent to angle 1. If the measure of angle 5 is 45 degrees, what are the measures of the other angles. This is on page 472 in...
*March 8, 2011*

**math**

a rectangle has a perimetr of 30m, if the length is at least twice the width,find the range of possible values of the width of the rectangle.
*March 6, 2011*

**social studies**

fdgdfgghfhg
*March 5, 2011*

**music appreciation**

The Baroque period began around the year ___?
*March 4, 2011*

**english**

How long did the journey to Virginia actually take Smith and the colonists?
*March 2, 2011*

**AP Physics**

I don't know the answer
*February 26, 2011*

**math**

i dont get this explain please. k
*February 23, 2011*

**Physics/ electricity**

Isn't it just suppose to be 9.3nc instead of 29.3nC?
*February 22, 2011*

**Physics/ electricity**

Consider a square of side length a = 9.7 cm with charged particles at each of the corners. Three of the particles carry +9.3 nC of charge while the fourth particle carries -9.3 nC. In volts, what is the electric potential at the center of the square? Hint: Choose the potential...
*February 22, 2011*

**math**

solve by elimination 5x+3y+5z=-16 2x+5y-z=-26 x-4y+2z=10
*February 19, 2011*

**English**

hah, i agree with kat. its something to do with chocolate thats all im gonna say...
*February 18, 2011*

**English**

*high fives kat*
*February 18, 2011*

**english**

On Monday April 23, 2012 at approximately 6:15 pm I Officer John Doe received a radio call to 1630 Featherstone Ave, Auburn Hills, Michigan 48326 in reference to a domestic violence call. Upon my arrival at the call location I was met at the door by the caller Rose Smith who ...
*February 15, 2011*

**Accounting 280**

E15 1
*February 14, 2011*

**chemistry**

As you saw in Part B, the vapor above the cyclohexane-acetone solution is composed of both cyclohexane vapor and acetone vapor. What mole fraction of the vapor above the solution, X(cy) vapor), is cyclohexane?
*February 8, 2011*

**chemistry**

A 20mg sample of a compound is dissolved in 5.0 mL of water and extracted with 2.5 mL of heptane. After seperation of the layers, the heptane layer is found to contain 15 mg of the compound. What is the partition cofficient of the compound, K(hept/water)
*February 7, 2011*

**chemistry**

A 20mg sample of a compound is dissolved in 5.0 mL of water and extracted with 2.5 mL of heptane. After seperation of the layers, the heptane layer is found to contain 15 mg of the compound. What is the partition cofficient of the compound, K(hept/water)
*February 7, 2011*

**Physics**

Hello, I have e problems with dis question A harmonic wave on a string moves along the x-axis according to: (x,t) =5.0 (cm) sin[ (2.5m^-1) x - (63s^-1) t ] At x = 1.0 m when t = 2.2 s the speed of the oscilations on the string is closest to ... me thought that you can just ...
*January 26, 2011*

**Chemistry**

If an Alka-Seltzer tablet has a mass of 4.953 g, and an Erlenmeyer flask containing an HCl and water solution weighs 160.351 g, what is the percent by mass of NaHCO3,in the tablet if the Erlenmeyer flask and its contents weigh 164.027 g after reaction? Please include the ...
*January 25, 2011*

**math**

In 2001, Windsor, Ontario received its maximum amount of sunlight, 15.28 hrs, on June 21, and its least amount of sunlight, 9.08 hrs on December 21. a. Due to the earth’s revolution about the sun, the hours of daylight function is periodic. Determine an equation that can ...
*January 23, 2011*

**Math**

State domain, range, period, vertical asymptotes, zeros, symmetry and y-intercept of y = -2tan(3x + 180) + 3
*January 22, 2011*

**Math**

Describe how the graph of y + 3 = 2sin(3x + 90) compares to the graph of y = sin(x)
*January 22, 2011*

**Organic Chemistry**

Thanks! and you do mean that it is 0.0123 moles, therefore I would plug in 3 for M, and 0.0123 for moles so that implies 3 x L = 0.0123 --> 0.0123/3 = L = .0041 L ~ 4.0mL ?
*January 20, 2011*

**Organic Chemistry**

I realize this is a general chemistry stoichiometry question, however I can not fully grasp it. I am supposed to calculate the theoretical amount (volume) of 3M sodium hydroxide (NaOH) needed to convert 1.5g of benzoic acid to its salt. I got 0.012 moles of bezoic acid present...
*January 20, 2011*

**Chemistry**

The format came out wrong - the double bond of oxygen to carbon occurs at the first apex.
*January 20, 2011*

**Chemistry**

Hi I hope you can understand this...the Na ion is attached to the oxygen using ionic bonding. The \/ are meant to symbolize the hydrocarbon chain. The || is a double bond that bonds oxgen to carbon. O || Na O/\/\/\/\/\/ + CaCl2 -> ? + NaCl To give you some background, it ...
*January 20, 2011*

**pre-algebra**

can you please help me find the common denominater to this problem? n+2/3=1/9
*January 13, 2011*

**math**

help find common denominator
*January 13, 2011*

**math**

n+2/3=1/9
*January 13, 2011*

**math**

are you there?
*January 13, 2011*

**math**

how do you find the common denominator
*January 13, 2011*

**math**

n+2/3=1/9
*January 13, 2011*

**math**

4=4/9+y
*January 13, 2011*

**math**

Solve Equation by Adding or Subtract fraction using Addition property of Equality or Subtraction property of equality. x-5/6 = 1/10
*January 13, 2011*

**dressmaking**

Mrs. Shotto was once one of your regular customers, but she hasn't asked to have any garments made in approximately one year. You note she has lost weight. She would like you to make her a special silk blouse to replace a favorite blouse that has worn out. The blouse has ...
*January 12, 2011*

**Business finance**

10.38
*January 10, 2011*

**Iron and Sulphur reaction**

I don't know
*January 10, 2011*

**chemistry**

what volume will 5.00g of dinitrogen oxide gas occupy at 50.0 degrees celcious and 12.0 atmosphere
*January 10, 2011*

**chemistry**

what is the mass of 250.0 ml gas at 25 degrees celcious at 0.359 atmosphere
*January 10, 2011*

**chemistry**

what is the density of methyl gas at 25 degrees celcious and 1.50 atmosphere.
*January 10, 2011*

**calc**

forget it :) i figured it out! thanks!!!!
*December 29, 2010*

**calc**

i just looked at it and tried to figure it out but i just don't get it. in the example you gave me there was already a rate that the air was being pumped, but in mine there is none. it's asking for the rate. I just don't get it
*December 29, 2010*

**calc**

im so confused :( Willie Makit blows up a spherical balloon. He recalls that the volume is V=4/3Pi*r^3. In order for the radius to increase at 2cm/sec, how fast must Willie blow air into the balloon when the radius is 3 cm?
*December 29, 2010*

**organic chemistry**

Ferrocene cannot be nitrated using the conventional HNO3-H2SO4 mixed acid conditions, even through nitration is an electrophilic aromatic substitution reaction. EXplain.
*December 29, 2010*

**organic chemistry**

In the formation of diacetylferrocene, the product is always the one in which each ring is monoacetylated. Why is no diacetylferrocene produced in whcih both acetyl group are on the same aromatic ring?
*December 29, 2010*

**organis chemsitry**

what is the main structural feature of the azo dyes that causes them to be colored compounds.
*December 29, 2010*

**Organic chemistry**

1. In in experiment, sodium bisulfite solution is added at the end in order to destroy the unreacted bromime. What reaction is occuring here? Is HSO3- acting as an oxiding or reducing agent? Write a balanced equation as part of your answer.
*December 29, 2010*

**Organic Chemistry**

If 3-bromo-1-propanol is treated with NaOH, a compound of molecular formula C3H6O is formed. suggest a structure for this product.
*December 29, 2010*

**physics**

Please help me to solve this problem about electic potential : An electric car accelerates for 7.0 s by drawing energy from its 290-V battery pack. During this time, 1200 C of charge pass through the battery pack . Find the minimum horsepower rating of the car.
*December 19, 2010*

**physics**

Please help me to solve this problem about electic potential : An electric car accelerates for 7.0 s by drawing energy from its 290-V battery pack. During this time, 1200 C of charge pass through the battery pack . Find the minimum horsepower rating of the car.
*December 19, 2010*

**physics**

A car starts from rest accelerates with a constant acceleration of 1.5 m/s squared. HOw far does the car move in 4 seconds?
*December 10, 2010*

**math**

What does a snowflake have to do with math?
*December 1, 2010*

**statistics**

A newspaper survey found that 65% of readers found online tutorials useful. If a random sample of 9 readers is selected, compute the standard deviation of the probability distribution.
*December 1, 2010*

**sewing**

What is a wood clap used for in sewing ? thank you
*November 30, 2010*

**Math**

$102,400
*November 23, 2010*

**PLEASE HELP. physics**

For A- m1v1 = m2v2 (.015kg + .25kg)V = .015kg + 200m/s v = 11.3m/s (1/2)mv^2 = mgh so h=(1/2)(v^2)/g h = 6.5m
*November 21, 2010*

**sociology**

How can the three sociological perspectives (e.g., social functionalism, social conflict, and symbolic interaction) be used to conceptually understand social deviance?
*November 20, 2010*

**Physics**

2T=(2*pi*massproton)/(chargeproton*B) So a) B=(pi*1.67*10^-27)/(1.6*10^-19*155*10^-9) b) Doubling the kinetic energy changes the velocity. Period T does not depend on velocity so the answer is 155 ns.
*November 17, 2010*

**Physics**

lift.
*November 14, 2010*

**chemistry**

SCl2= sp3 SCl6= sp3d2 SCl4= sp3d
*November 6, 2010*

**math pleaseee help!!!!!!!!!!!!**

what is the best parking space/shortest that would take the from store 1 to store 2 and back to the car?use the following information: -the distance between store 1 to store 2 is 25 yds wide. -driveway between the sidewalk and parking lot is 10 yds this all they give me please...
*November 4, 2010*

**college**

be used to conceptually understand multiculturalism?
*November 3, 2010*

**calculus**

Let A be the bounded region enclosed by the graphs of f(x) = x , g(x) = x3 . Find the volume of the solid obtained by rotating the region A about the line x + 2 = 0.
*October 31, 2010*

**math**

how long was the dolphin show? the number of minutes is between 40 and 60. the tens digit is one less than the ones digit. the number has 4 tens. what is the answer
*October 31, 2010*

**HCR/230**

Thank you so much..but have already checked those and they did not help..
*October 28, 2010*

**HCR/230**

I do not understand it...and my book does not help. I have looked thru my book on more then one occasion and can not figure out how to answer them. So could u ever be so kind to help me in the right direction.
*October 28, 2010*

**HCR/230**

What are the basic elements of an effective medical office financial policy? In what ways do medical office procedures support financial policies? What are the consequences when office procedures do not support the financial policy? What recommendations, strategies or tools ...
*October 28, 2010*

**math**

i need help thats why im on this sight because im trying to find the answer! urghh
*October 27, 2010*

**9th grade math**

suppose u invested some money at 8% simple interest for five years. if u received $500 in interest, how much money did u invest?
*October 26, 2010*

**9th grade math**

suppose you invested $1200 for four years. you earned $312 in simple interest. what is the interest rate?
*October 26, 2010*

**9th grade math**

you invest $1500 for three years.find the amount you earn at an annual rate of 8.25%
*October 26, 2010*

**math**

at a local grocery store, the bananas they receive are transported through three stages: from the farmer to the market, from the market to the wholesaler, and from the wholesaler to the grocery store. at each stage, the price of the bananas increases by 20% of the previous ...
*October 25, 2010*

**Maths**

Divide $4000 to Kimand Dan in the ratio 3:5 How much money will each have?
*October 21, 2010*

**Math**

ok so you have 23 = 1-d If you are looking for d than you have to get d by itself. To do this you can do it one of two ways. you can add D to both sides to get rid of the negative d (b/c you are looking for positive d). this would leave you with 23+d=1 then to get d by itself ...
*October 19, 2010*

**Math**

if you are solving for d then all you have to do is subtract both sides by one and then divide by a negative d= -22 or add d to both sides and subtract 23 either way works
*October 19, 2010*