Saturday

May 30, 2015

May 30, 2015

Total # Posts: 2,629

**Chemistry**

Calculate the total quantity of heat required to convert 25.0 g of liquid CCl4(l) from 25.0°C to gaseous CCl4 at 76.8°C (the normal boiling point for CCl4)? The specific heat of CCl4(l) is its heat of fusion is and its heat of vaporization is
*April 13, 2010*

**Science**

When 260. mL of 1.50 x 10-4 M hydrochloric acid is added to 125 mL of 1.75 x 10-4 M Mg(OH)2, the resulting solution will be
*April 13, 2010*

**chemistry**

We want to make 100. mL of 1.0 M NaA solution by dissolving solid NaA in water. What mass of solid NaA is needed?
*April 12, 2010*

**9th grade geometry**

take 360 divided by how many slices it was cut into for the arc of each. divide 360 by that number, multiply it by pi, than multiply it by the radius. that'll give you the area of one slice, so all you have to do now is multiply the area of one slice by 3 for all 3 slices...
*April 12, 2010*

**math riddle algebra pizzaz**

living in x aisle
*April 12, 2010*

**geometry**

i have only a measuremment for one side of a triangle need to find the other to to find area how do i do this
*April 12, 2010*

**Calculus**

How did you guys get those formulas I have the same question and I have no idea how to start it
*April 10, 2010*

**phisics**

676
*April 7, 2010*

**chemistry**

Strontium-90 has half-life of 28 years. if a 1.00-mg sample was stored for 112 years. what mass of Sr-90 would remain?
*April 6, 2010*

**MATH**

IS 8 FL OZ ONE CUP
*April 6, 2010*

**2nd grade**

100 millon
*April 5, 2010*

**accounting**

I am attempting to study for an exam for tomorrow and cannot figure out the equity method entries up to 2006 for this problem, can someone please help! Parent Corporation owns 80% of Subsidiary Corporationâ€™s outstanding common stock that was purchased at book...
*April 5, 2010*

**chem lab (webwork)**

the answer is NOT d!!...i just did it and got it wrong -__-
*April 5, 2010*

**elementary math**

when finding the factors for 841 what is the largest factor you would have to test?
*April 2, 2010*

**algebra**

6 over x to the 10th times x to the 17th over 15
*April 1, 2010*

**algebra**

6 over x to the 10th times x to the 17th over 51
*April 1, 2010*

**science**

The ______ of a transverse wave is the distance between 2 crests or 2 troughs.
*March 31, 2010*

**Geography**

32. Bucharest, Romania 33. Budapest, Hungary
*March 30, 2010*

**Statistics**

How do you calculate the value of z* and t* on the TI-84 and TI-89 (the number used in confidence intervals)?
*March 30, 2010*

**Math**

I know that's the first thing that comes to mind, but my teach said that it can be done. He said that the answer is $0.05, so if someone can work backwards somehow and explain to me how he arrived at that answer I would appreciate it. :)
*March 28, 2010*

**Math**

If a bottle and a stopper cost $1.10. How much does the stopper cost?
*March 28, 2010*

**math**

X= 1
*March 28, 2010*

**reiny**

Where did you get .55? I don't need the slope I don't think. This is a pretty straightforward Q, I don't need to graph it.
*March 28, 2010*

**another word problem!**

iN 1993, THE LIFE EXPECTANCY of males was 68.6 years. In 2000, it was 71.1 years. Let E represent the life expectancy in year t and t represent the number of years since 1993. The linear function E(t) that fits this data is: E(t)=_t + _ (round to the nearest tenth) Use the ...
*March 28, 2010*

**please help! Examples in book are different!**

train A and b are traveling in the same direction on parallel tracks. Train A is traveling at 40 mph, and B is at 60 mph. Train A passes the station at 12:25 am, and train b passes the station at 12:40 am, what time will train b catch up to train A?
*March 28, 2010*

**word problem**

train A and b are traveling in the same direction on parallel tracks. Train A is traveling at 40 mph, and B is at 60 mph. Train A passes the station at 12:25 am, and train b passes the station at 12:40 am, what time will train b catch up to train A?
*March 28, 2010*

**math**

I need help! Solve by hte elimination method: 7r-9s=-12 9r+7s=96 When I do this, I get a crazy fraction, and I know the answer is a point. (r,s) But what I'm getting is ridiculous. I got -564/130=s! That has to be totally wrong!
*March 28, 2010*

**math**

how do I solve this? I know it's common math, but I cannot remember how! -4x> 1/11 I think I multiply both sides by 11, but..... I can't remember how!
*March 28, 2010*

**math**

Help! These are fractions, so bear with me: -5/8 x= -9/10 Solve with the multiplicaation principle. How do I do this? The fractions throw me off every time!!!
*March 28, 2010*

**math substitution method**

I know this! Put it in for x. So 7(28-6y) +5y=-26 use that to get y, then plug your answer for y into one of the equations to get x
*March 28, 2010*

**math**

Help! These are fractions, so bear with me: -5/8 x= -9/10 Solve with the multiplicaation principle. How do I do this? The fractions throw me off every time!!!
*March 28, 2010*

**algebra/common math**

how do I solve this? I know it's common math, but I cannot remember how! -4x> 1/11 I think I multiply both sides by 11, but..... I can't remember how!
*March 28, 2010*

**algebra**

I need help! Solve by hte elimination method: 7r-9s=-12 9r+7s=96 When I do this, I get a crazy fraction, and I know the answer is a point. (r,s) But what I'm getting is ridiculous. I got -564/130=s! That has to be totally wrong!
*March 28, 2010*

**3rd grade**

Unscramble cioponam
*March 23, 2010*

**physics**

10.2
*March 23, 2010*

**6th grade - English**

what is the antonym for ndrvr
*March 22, 2010*

**MATH - Can someone please help!**

What is the solution of the interval notion? x less than 6 and x greater than -3
*March 21, 2010*

**algebra**

How do I solve this with the elimination method? 5x-10y=4 5x-10y=5 I need x=, and y= to get an ordered pair, but every time I mult. by a neg, everything goes away instead of just one variable! please help!
*March 21, 2010*

**chemistry**

At 300.K and 1.00 atm, assume that 25 mL of NO gas reacts with 22 mL of oxygen gas and excess water to produce nitric acid according to the following equation: O (g) H O(l) 2 HNO (g) 2 2NO(g) 3 + 2 + 2 ⎯⎯→ 3 . If all of the nitric acid produced by this ...
*March 21, 2010*

**Math**

What is the solution of the interval notion? x less than 6 and x greater than -3
*March 21, 2010*

**algebra**

how do I break this down? 4x-7 <-4 over 6 the 4x-7 is all over 6 (like a fraction) I thought I just multiply by 6 to get rid of the fraction?
*March 20, 2010*

**algebra**

YOU ARE RETART JEWBU
*March 17, 2010*

**6th grade math**

answear is x>54(11)+ 20 what is x,=81
*March 16, 2010*

**chemistry**

What are the probably products of... a) an aqueous solution of two ionic compounds b) a single compound c) two elements d) oxygen and a compound of carbon and hydrogen ?
*March 16, 2010*

**Environmental Science**

very helpful :)
*March 15, 2010*

**math**

How do I solve the equations using the elimination method: .3x-.2y=4 and .4x +.3y= 49/23 Normally I would multiply the decimals by 10 to make them whole numbers, but that fraction is really throwing me off. What do I multiply to eliminate that fraction? Please help!
*March 14, 2010*

**Auditing**

1. Which of the following matters would an auditor most likely consider to be a significant deficiency to be communicated to the audit committee? A. Management's failure to renegotiate unfavorable long-term purchase commitments. B. Recurring operating losses that may ...
*March 11, 2010*

**Math 208**

3....
*March 8, 2010*

**Math 208**

3....
*March 8, 2010*

**Math 208**

;...
*March 8, 2010*

**Math 208**

3.14159265358979323
*March 8, 2010*

**Math 208**

My mom
*March 8, 2010*

**Math 208**

Hee hee
*March 8, 2010*

**Business**

Looks right to me
*March 5, 2010*

**algebra 1**

Itwantedtobethenightmare
*March 2, 2010*

**Calculus**

Where did you get the (L-5) and the (W-4)?
*March 1, 2010*

**math**

When a lady faints, what number do you need to bring her?
*February 28, 2010*

**Chem**

A gas at a pressure of 1 atm, a volume of 1 , and a temperature of 25 C. What would happen to the pressure if the volume were reduced to 0.5 and the temperature increased to 250 C ?
*February 27, 2010*

**chemistry **

Diacetyl, a substance contributing to the characteristic flavor and aroma of butter, consists of 55.8% C, 7.03% H, and 37.17% O. In the gaseous state at 100 degrees celsius and 747 torr, a 0.30 gram sample occupies a volume of 111 ml. What is the molecular formula of diacetyl?
*February 23, 2010*

**Chemistry**

A mixture of gasses at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2, is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?
*February 22, 2010*

**Chemistry **

A gas storage tank has a volume of 350,000 when the temperature is 27 degrees celcius and the pressure is 101 kPa. what is the new volume of the tank if the temperature drops -10 degrees celcius and the pressure drops to 95 kPa? please show work.
*February 22, 2010*

**Physics**

u r wight and ask ur teacher if u are confused it is the best way...
*February 22, 2010*

**Science**

You are 100% correct...I think...
*February 22, 2010*

**Chemistry**

A gas occupies a volume of 140 mL at 35 degrees celsius and 97 kPa. What is the volume of the gas at STP?
*February 22, 2010*

**Chemistry **

A 10 gram of mass of krypton occupies 15.0 L at a pressure of 210 kPa. What is the volume of the krypton when the pressure is increased to 790 kPa?
*February 22, 2010*

**College physIcs**

"You don't seem to be willing to take step one in answering these problems yourself. " What good is just knowing a formula?
*February 19, 2010*

**ethics 125**

· Consider the following statements: (a) Asian Americans and Pacific Islanders are a model minority, and (b) Asian Americans and Pacific Islanders belong to a single “Asian American” culture. If someone said one of these statements to you, how would you ...
*February 18, 2010*

**4th grade math**

I think Erik meant to say that Judy had 15, not 12. Then, it solves that 27+ (27-12)=42, right? My SIL just called asking us this same question...must be at the same place in the book!
*February 17, 2010*

**Chemistry**

4.76 kg
*February 17, 2010*

**spanish**

Choose the correct command form. No __________ uds.esos zapatos sucios en la casa! (llevar) A. llevan B. lleven C. lleve D. lleva
*February 17, 2010*

**chemistry **

If 2500 ml container is filled with 175 grams of argon at -48 degrees celsius, what is the pressure?
*February 16, 2010*

**chemistry 2**

Then your answer is B
*February 16, 2010*

**chemistry 2**

im confused i cant set this problem up correctly? I need a lot of help
*February 16, 2010*

**chemistry 2**

(2.0/0.5)=4
*February 16, 2010*

**chemistry 2**

A gas diffuses only 0.5 times as fast as an oxygen molecule at the same temperature. What is the molecular weight of the gas?
*February 16, 2010*

**Chemistry **

How do you convert from mass percentage to molality? I get 0.084 m but that is incorrect.
*February 15, 2010*

**chemistry**

how many grams of propane are in a 35L container at 40 degrees and 900 torr?
*February 14, 2010*

**chemistry**

how many grams of propane are in a 35L container at 40 degrees and 900 torr?
*February 14, 2010*

**physics**

fdfadf
*February 13, 2010*

**Physics **

a^2 + b^2 = c^2
*February 8, 2010*

**trig**

2sin(3x-3.14)-1 find the inverse form of this equation
*February 8, 2010*

**Algebra**

Can I simplify this further SQRT( 2 - SQRT(2) )
*February 8, 2010*

**math**

need help with this problem 9-10x2 divided by 5+7
*February 7, 2010*

**algebra**

what percent of 180 is 27?
*February 7, 2010*

**science**

two common ways in which a glacier can cause ersion?
*January 28, 2010*

**math**

The percentage of working mothers y can be modeled by the equation y=0.0102x + 0.644 where x is the number of years since 1990. In what year will 90% of mothers be in the labor force?
*January 28, 2010*

**3rd grade**

when i am rounded to the nearest ten, i am 30. The sum of my two digits is 5. What number am I?
*January 25, 2010*

**calculus**

I tried the integral from 1 to e of 1-lnx^2 but that doesn't work.
*January 25, 2010*

**calculus**

Find the volume if the area between the curve y=lnx, x=1, and y=1 is rotated about the x-axis.
*January 25, 2010*

**fifth frade fractions**

Two numbers have a product of 3 1/5 and a sum of 3 3/5. one of the numbers is a whole number. What are the numbers?
*January 25, 2010*

**algebra**

a)using intercepts, graph the three lines 4x + y - 8=0, 2x - y - 4=0, x + 2y - 16 = 0
*January 24, 2010*

**math**

Extremely large numbers, number of sand particles on the world, distance to the nearest star in KM's etc.
*January 21, 2010*

**Chemistry**

A 71.0 L cylinder containing CH2O at a pressure of 0.550 atm is connected by a valve to 1.50 L cylinder containing N2 at 266.0 torr pressure. Calculate the partial pressure (atm) of N2 when the valve is opened.
*January 20, 2010*

**AED 204**

i just want to know what to do? do u awnser it personally? Appendix D Educational Implications of Socioeconomic Status Matrix Directions: Based on your personal experiences and on the readings for this course, answer the questions in the green section of the matrix as they ...
*January 18, 2010*

**AED 204**

Who is most likely to be a part of this socioeconomic class? How do teacher expectations positively or negatively impact this socioeconomic class? How does tracking positively or negatively impact this socioeconomic class? How is financial support for schools serving this ...
*January 18, 2010*