Friday

August 28, 2015
Total # Posts: 171

**college chemistry**

When a solution containing 8.00 g NaOH in 50.0 g of water at 25 °C is added to a solution of 8.00 g of HCl in 250.0 g of water at 25 °C in a calorimeter, the temperature of the solution increases to 33.5 °C. Assuming that the specific heat heat of the solution is ...
*June 23, 2015*

**Algebra **

in what form is the following linear equation written? 3x-2y=4 A.rise-run B.standard C.slope-intercept D.point-slope
*June 16, 2015*

**math**

The greatest integer function ,shows below, is defined to be greatest________less than or equal to x. f(x)=[[x]]
*June 15, 2015*

**algebra 2**

f(x)={2x,x<1} {5,x=1} {x^2,x>1} Given the piecewise functions shown below, select all of the statements that are true. A.f(5)=1 B.f(2)=4 C.f(-2)=4 D.f(1)=5
*June 15, 2015*

**algebra2**

is f(x)= x^3-x^2-9x+9 a one to one function
*June 15, 2015*

**algebra2**

hoe many solutions are there to the equations below? 8x+47=8(x+5)
*June 10, 2015*

**algebra2**

how many solution are there to the equation below? 3x-10(x+2)=13-7x A.1 B.0 C.Infinitely many
*June 10, 2015*

**algebra2**

How many solutions are there to the equation below? 220=2x-12x a.1 b. Infinitely many c.2
*June 10, 2015*

**algebra2**

how many solutions are there to the equation below? 6x+30+4x=10(x+3) I want to know how to do this problems Please and Thank you
*June 10, 2015*

**algebra2**

How many solutions are there to the equation below? 145=10x-8x
*June 10, 2015*

**Algebra 2**

What is the solution to this equation? 4(x-8)+10=-10
*June 10, 2015*

**Math**

There eight girls competing in an ice=skating competition. In how many ways can they finish in first, second and third place? 366 1,680 2,016 40,320 I think it is 2,016
*May 17, 2015*

**psychology**

please help it's due today.!
*May 14, 2015*

**psychology**

PLEASE HELP LAST QUESTION.??? Among William James's contributions to the science of psychology is that he A. he wrote the first American text in psychology b.. developed a psychodynamic treatment for mental illness. c.experimented with classical conditioning d. developed ...
*May 14, 2015*

**Science**

What kind of substance has properties that reflects light very well, warms up in my hand, flattens out when it hits with a hammer and conducts electricity?
*March 16, 2015*

**Chemistry - Solubility**

Ok, thanks for your help!
*March 16, 2015*

**Chemistry - Solubility**

Thanks! Just to clarify, is CuS considered a solid and not included in the calculation of k? I made an ice table and got the following equation: x^2/(0.150-4x)^4 = 2.66 x 10^-7 Is this the right process? Thanks.
*March 16, 2015*

**Chemistry - Solubility**

Calculate the solubility of copper(II) sulfide in a solution that is 0.150 mol L^-1 in NaCN. I am very confused on what to do. Since there are no common ions, I know that this is not the common ion effect. Also I do not believe this is a pH effect question. Is this a complex-...
*March 16, 2015*

**Trigonometry**

Can you please help me verify these? >sin7x-sin5x= tanx(cos7x-cos5x) >(1-cosx)cot(1/2x) = sinx >1+tanx tan(x/2) = secx Its very confusing because of all the double-half angle formulas >_<
*February 3, 2015*

**chemistry**

A solution contains 3.10 g of solute in 10.4 g of solvent. What is the mass percent of the solute in the solution?
*November 29, 2014*

**math**

Suppose you take out a loan for 180 days in the amount of $13,500 at 11% ordinary interest. After 50 days, you make a partial payment of $1,000. What is the final amount due on the loan?
*October 23, 2014*

**math**

198/18=11
*October 23, 2014*

**Math**

A bus is traveling at 79.7 kilometers Er hour east, how far does the bus travel 1.45 hours?
*October 10, 2014*

**Math: Finance**

Need help solving these finance questions? PV = C/r PV= C/r-g P= D/r-g 1st: Tom is 30 years old today. His salary next year will be $20,000. He forecasts salary growth of 5%/year and plans to retire at 60. 1) If the discount rate is 8%, what is the PV of his future salary ...
*October 8, 2014*

**geonetry**

What is the area of sector CED when DE = 15 yd?
*July 3, 2014*

**math homework**

What is the perimeter of a triangle whose sides measure 21cm, 16cm, and 19cm?
*April 17, 2014*

**chemistry**

how many moles of H2O are produced when 5.00 mols of oxygen gas are used
*March 25, 2014*

**math**

Finney & Company purchased $1,800 of merchandise on 5/6. The terms were 2/15 EOM. The sneakers were received on 5/20, sent FOB Shipping Point. Freight charges amounted to $45. What payment must be made by that date to take advantage of the discount?
*March 16, 2014*

**math**

Bert wants to make a larger version of a drawing he saw in a magazine. The drawing fits into a square with each side measuring 7 cm. If Bert makes his copy twice the size of the square measured in the original drawing, how much space will it cover on the paper he uses?
*February 17, 2014*

**Algebra**

t=56
*January 26, 2014*

**math 5th**

in the following addition problem, each letter stands for a different digit. Find the value of X, Y, and Z XYZ + ZYX _______ YYZY
*October 10, 2013*

**physics**

f a police car is traveling along at 40 mi/hr and speeds up to 90 mi/hr to catch a speeder and it takes a total time of 1hr to finally catch the speeder. what was the police car's acceleration?
*September 9, 2013*

**Math**

Cepheid variables are vital for measuring the distances of relatively nearby galaxies. What is the probability of finding a cepheid variable star? State ALL your assumptions
*April 30, 2013*

**Chemistry**

If 45g of a 2.2% NaHCo3 solution is to be prepared how many grams of NaHCo3 are needed
*April 16, 2013*

**math**

ms.joliet gave a math quiz to see how her small group was doing. what score would make the median 90, the mode 85, and the range 20 if she had the numbers listed below 85,85,90,?,100,85,80,100,90
*February 8, 2013*

**Spanish please translate from spanish to english**

1.) What is the higher premium? 2.) What is the lower premium? 3.) Is May 12. It is August 20. It's the first of December. Is December 1. 4.) Is twelve years old. 're Twelve. I have twelve.
*February 8, 2013*

**Please translate from spanish to english**

The Gutierrez family has two children. Ramon is 15. It is the oldest son. His birthday is August 20. Roger is 13. It is the youngest son. Roger's birthday is on December 1. Ramon and Roger have two cousins. They are called Lydia and Silvia. Lydia is 14 and is...
*February 8, 2013*

**Math**

Sally bought 3 tickets to the observation deck at the top of a skyscraper. She paid with a five-dollar bill and got 50 cents change. What was the cost of each ticket?
*January 28, 2013*

**English**

What public health issue starts the escalation of misery in "top of the food chain"?
*December 26, 2012*

**Macroeconomics**

Consider the following data: The money supply in $1 trillion, the price level equals 2, and real GDP is $5 trillion in base-year dollars. What is the income velocity of money?
*December 2, 2012*

**Business math/Finite**

Find the amount accumulated in the sinking fund it $450 is deposited monthly for 20 years at 9% per year? (assume end_of_period deposits and compounding at the same intervals as deposits. Round your answer to the nearest cent.)
*November 28, 2012*

**Business math/Finite**

How long to the nearest year, will it take an investment to double if it is continuously compounded at 4% per year
*November 28, 2012*

**World Geography**

When attacking Russia in 1941,Germany...
*October 25, 2012*

**physics**

How many significant figures are in 24.010
*October 22, 2012*

**chemistry**

Thank You!!!
*October 12, 2012*

**chemistry**

In a 1.0x10^-4 M solution of HClO(aq), identify the relative molar amounts of these species:HClO, OH-, H3O+, OCl-, H2O
*October 12, 2012*

**physics**

a car skids to a halt at a rate of -9.4 m/s2. the skid marks measure 34 m. what speed was the car going when it slammed on the brakes?
*September 17, 2012*

**algebra 2**

how do i find the are of the region defined by |x|+|y| less than or equal to 5 and |x|+|y| greater than or equal to?
*September 11, 2012*

**algebra 2**

how do i find the are of the region defined by |x|+|y| less than or equal to 5 and |x|+|y| greater than or equal to?
*September 11, 2012*

**math**

i believe its 1.9
*September 11, 2012*

**PHYSICAL SCIENCE**

An object has a length of 5.0 cm, a height of 3.0 cm and a width of 15.0 cm. It has a mass of 24 grams. What is its density?
*September 11, 2012*

**Physics**

Large boxes of pumpkins are set on a ramp to be unloaded out of a truck. The 300.0 lb boxes are set on the ramp which has an incline of 35 degrees. They must then be pushed to get started down the plane towards the bottom. If the coefficient of the static friction between the ...
*September 4, 2012*

**College Physics**

Large boxes of pumpkins are set on a ramp to be unloaded out of a truck. The 300.0 lb boxes are set on the ramp which has an incline of 35 degrees. They must then be pushed to get started down the plane towards the bottom. If the coefficient of the static friction between the ...
*August 30, 2012*

**Physics**

Assume a block on unknown weight rests on an incline of 25 degrees and is initially not moving. What push (P) is required to start moving the block if the coefficient of static friction is 0.7?
*August 30, 2012*

**Physics**

Assume a block on unknown weight rests on an incline of 25 degrees and is initially not moving. What push (P) is required to start moving the block if the coefficient of static friction is 0.7?
*August 30, 2012*

**science**

the patient reports numbness and tingling in the left lumbar area and pain in the contralateral femoral region
*August 28, 2012*

**science**

the patient reports numbness and tingling in the left lumbar area and pain in the contralateral femoral region
*August 28, 2012*

**math **

A new car comes in 5 exterior colors and 3 interior colors. How many different-looking cars are possible?
*August 19, 2012*

**math**

If Christopher wants to have the same number of hot dogs and buns, what is the minimum number of hot dogs he will have to buy?
*July 30, 2012*

**chemistry**

25mL of tap-water is titrated with .00500 M EDTA. 7.95mL of EDTA is required for complete reaction, Whatis the molarity of that total water hardness in the 25mL sample
*May 1, 2012*

**economics**

What do brokerage firms charge fees on
*April 17, 2012*

**Math**

I'm having a hard time with this problem. The book tells you the answer is 5, but I don't know how they got there. log(x+25)= 1+ log(2x-7)
*April 9, 2012*

**ap world history**

Can you compare North American racial ideologies and their effects on society with Latin American/Caribbean racial ideologies and their effects on society in 1500-1830?
*March 21, 2012*

**4th grade math**

mia gave1\3 of her 24 marbles to david how many david get
*March 12, 2012*

**Business Finance**

Assume a bank loan requires a interest payment of $85 per year and a principal payment of $1,000 at the end of the loan's eight-year life. a) How much could this loan be sold for to another bank if loans of similar quality carried a 8.5 percent interest rate?
*March 1, 2012*

**physics**

What is the length of a box in which the difference between an electron's first and second allowed energies is 1.30×10−19 ?
*February 28, 2012*

**math**

if the drama club would want 120 to people see them act and want to fill up 10 rows how many people are in each row
*February 8, 2012*

**math**

how do i show my work for, 5+10/(1*(8+6)-4=6 ya i know the answer but i wanna know how to show my work.
*January 9, 2012*

**english**

Phil
*November 7, 2011*

**Physics**

Thanks!
*September 25, 2011*

**Physics**

During a lawnmower race, a rider starts from rest and accelerates at 1 m/s/s for 10 seconds. The rider then maintains a constant velocity for the remainder of the race, which takes an additional 20 seconds. A) How far was the race? B) What was the lawnmower's average ...
*September 25, 2011*

**Physics**

Does he get what back?
*September 11, 2011*

**English**

This is about The perfect Picture- byJames Thom What purpose does Thom's introduction serve and how did it affect you? How would the meaning of Thom's essay change if his essay started with paragraph 2 instead?
*September 11, 2011*

**English**

This is about Sound and Fury- Dan Greenburg Where is Greenburg's point stated in his essay and what is his point? How would the meaning be different if Greenburg had ended his essay with paragraph 29?
*September 11, 2011*

**History Project Suggestions**

I suggest LBJ I mean lol *
*September 11, 2011*

**History Project Suggestions**

I can choose two ! I really wish Reagan was here :(
*September 11, 2011*

**Chemistry**

of 1.79 M CuSO4(aq).
*September 5, 2011*

**Maths**

Hey :) I was wondering if someone could tell me if this answer and working is correct or not... Cos theta =-0.25 Cos inverse -0.25 = -14 therefore theta equals: 180--14=194or/and 180+-14=166 Any help would be much appreciated :) Thanks!
*August 29, 2011*

**Chemistry**

At standard temperature a gas has a volume of 275ml if the temperature is increased to 130C buit the pressure is held constant what is the new volume?
*April 19, 2011*

**statistics**

John drives to work each morning and the trip takes an average of = 38 minutes. The distribution of driving times is approximately normal with a standard deviation of = 5 minutes. For a randomly selected morning, what is the probability that John's drive ...
*April 17, 2011*

**Chm General 2**

if a student doing an experiment failed to dry the KHP before using it to standarize the NaOH solution. A) Would her calculated molarity of the NaOH solution probably be too hight or too Low?
*March 23, 2011*

**statistics**

using the 98-95-99.7 rule, find the percentage of scores within 20 points of the mean of 50.
*March 21, 2011*

**science **

how to tell if a solution is saturated
*February 16, 2011*

**College history**

I'm still not sure on how to answer this
*February 10, 2011*

**College history**

Explain the meetings that resulted in the Japanese seeing "Rolls-Royce,Rolls-Royce,Ford" and how was this part of Americans "clamoring for the outlawry of war? I need help with this question because I don't understand the question and what exactly it is ...
*February 10, 2011*

**algebra 2 and trigonometry**

What the solution of the equation: y^2-3y=9 ?
*January 18, 2011*

**algebra 2 and trigonometry**

What the solution of the equation: y^2-3y=9 ?
*January 18, 2011*

**Literature**

According to the map,Tony' farm is just ahead. Is this an adverb phrase
*January 10, 2011*

**Global **

How did the Scramble for africa impact people living back then & living today?
*January 1, 2011*

**algebra**

6x-7x=20 what is the value of x-
*November 30, 2010*

**physics**

in a vessel of 40 cm3 of water at 4 ° C is introduced aluminum over 80g to 8 º C. neglecting the effect of the vessel, calculate final temperature
*November 24, 2010*

**chemistry**

in a recipient of 40 cm^3 of water at 4°C is introduced aluminum over 80g to 8ºC. neglecting the effect of the recipient, calculate final temperature
*November 24, 2010*

**math**

two vectors are defined as a=2i+xj and b=i-4j. find value of x if a) the vectors are parallel b) the vectors are perpendicular
*November 21, 2010*

**math**

two vectors are defined as a=2i+xj and b=i-4j. find value of x if a) the vectors are parallel b) the vectors are perpendicular
*November 21, 2010*

**Global **

The tombstone proclaims that all france lies beneath the guillotine. What revolutionary event does it depict?
*November 11, 2010*

**Global History **

what about this one how has the idea of freedom of thoughts and expression by the philosopher voltaire altered the way governments manage societies
*November 2, 2010*

**Global History **

okay thanks you
*November 2, 2010*

**Global History **

well i have to write a paragraph explain how the scientific method impacted our understanding of the world and the way we study it?
*November 2, 2010*

**Global History **

How has the scientific method impact our understanding of the world and the way we study it?
*November 2, 2010*

**chemistry**

Calculate the pH during the titration of 20.00 mL of 0.1000 M CH3CH2CH2COOH with 0.1000 M NaOH after 26.5 mL of the base have been added. Ka of butanoic acid = 1.54 x 10-5.
*October 31, 2010*