# Posts by DiANA

Total # Posts: 924

chemistry
Someone can help me please? A gas sample weighing 0.528 g is collected in a flask having a volume of 126 mL. At 75 degrees celcius the pressure of the gas is 750 torr. The molecular mass of the gas is closest to which one of the following? PV=nRT Thanks, DrBob222

chemistry
Someone can help me please? A gas sample weighing 0.528 g is collected in a flask having a volume of 126 mL. At 75 degrees celcius the pressure of the gas is 75 torr. The molecular mass of the gas is closest to which one of the following?

chemistry 1
it should be 2C4HO + 8O2 - > 8CO2 + H20

CHEMiSTRY
THANK YOU ! ( :

CHEMiSTRY
what is the relationship between the pressure of a gas and the absolute temperature when the volume is kept constant ?

math
3 + 13 = 16

math
pentagon * A pentagon has five sides .

chemistryy
thanks .

chemistryy
what is the relationship between the pressure of a gas and the absolute temperature when the volume is kept constant ?

history
What was the cause of the Panic of 1837? It means the same as too many people buying too much land with too little collateral.

American Government
if there is collision between the president and congress,can congress restain the president in foreign policy making?

math
do i have to multiply or divide?

math
sin 190 over 20 equals sin 47 over x.

CHEMISTRY
TO WHAT SPEED MUST AN ELECTRON BE ACCELERATED FOR IT TO HAVE A WAVELENGTH OF 3.0CM?

Physics

Acne is an example of a(n) A. papule. B. nodule. C. ulcer. D. vesicle. WOULD IT BE PAPULE?

algebra

algebra
thanks bob, for all your help

algebra
the width of a rectangle is 1 ft less than the length, the area is 6 ft^2, what is the length and width? thank you

math
2X3

algebra
x^2-7x+3=0 1) exact solutions x=? 2) approx to 3 decimal places x=?

Yes to get that i did: (5^x)^2 - 4(5^x) =12 5^x(1-4) = 12 -3(5^x)= 12 log(5^x) = log(-4) If you could show me the correct way to do it, that would be great! thanks!

Could someone help me with this question? 5^(2x) - 4^(5^x) = 12 I got up to log (5^x)= log(-4) but it isnt correct since it can't be negative.

Finance
anthony bought a boat 3 years ago, and at that time he put a down payment of \$25000 cash. today he made the second and final payment of \$28 300, which includes the interest on the balance owing. anthony financed his purchase at 6.35%/a, compounded quarterly. determine the ...

algebra
write a quadratic equation having the given numbers as solutions. -4 and -1 thank you

what is your view on health care

Math
Solve the equation for x in the interval 0<x<2pi 1/ 1+tan^2x = -cos x How would i do this? im thinking of maybe changing the 1+tan to sec^2x?

Math-gr12
how would i do that?

Math-gr12
How would I solve this equation for x in the interval 0<x<2pi tan^2x sinx - sinx/3 = 0 Please explain it step by step..ive been stuck on this question for far too long..sigh

Trigonometry
You use the double angle formulas.

algebra
write equivalent expression using radical notation (a^2b^2)^1/3

government
was ronald reagan considered strong or weak on foreign policy?

DECIMALS
write the appropriate numbers 1. add 15 parts of 0.01 2. add 9 parts of 0.01

decimals

finance
How much will Pauline pay in interest if she takes out a simple interest loan with a principal of \$3,900 at 7.2% for three years?

Math
My cousin Robert was pushed into a pool. The pool was 6 feet Wide and 10 feet deep. The pool had soft walls. How did my Cousin Robert Emerge from the pool? Ans__________ Hint- We do not know if it's filled with water or not. It is a round pool. It is a ground pool.It has ...

american
Why do you think it was written in 1863(after two years of fighting in the Civil War)?

antonyms
lvht- love/ hate

Algebra
collect like terms 17a +6b-11a-9b= thanks

Algebra
translate to an algebraic expression, the product of 11% of some number

Algebra
find the indicated outputs f(x)=2x^2-3x f(0)=? f(-1)=? f(2)=? help?

Algebra
I need someone to refresh my brain on collecting like terms.. 17a + 6b - 11a - 9b= thank you

history
can you check this question Why did Napoleon invade Russia Napoleon invaded Russia because he wanted to complete his mastery of Europe.

world history
could you help me with this question Why did being a sea power help britain to survive an attack by the French?

Algebra
describe what the graph of interval [-4,10] looks like. thank you

French
Could you please check these Thanks you!!! Directions: Complétez Part 1 1. Au bord de la mer, on va à la ----------------. Answer: plage 2. Il faut mettre de la ---------- quand on prend un bain de soleil. Answer: créme solaire 3. Laure apprend à ...

Algebra

algebra
The second angle of a triangle is three times as large as the first. The third angle is 20 degrees larger than the sum of the first two. What are the measures of the angles?

Math
There are no parenetheses

Math
im lost evaluate 30 divided by 5*3-2 all over/2-2divided by 3 Math - jim, Tuesday, October 20, 2009 at 5:39pm You 'll have to clarify that. Do you mean: 30 / (5*3-2)/ (2-2/3) ? Math - Diana, Tuesday, October 20, 2009 at 7:40pm no Ill try to write it out thirty divided by 5...

Math
thank you so much!

Math
I guess its a fraction sorry about typing these are the answers to chose from A)=0, B)= 2 1/4 C) undefined, D) -4 1/2 problem (-3)^3-9 then there is a line and under the line is 6/2*3-1

Math
(-3)^3-9 then there is a line and under the line is 6/2*3-1 please help a, 0, b2 1/4 cunndefined,d -4 1/2

Math
Which of the numbers 37,39,41,and 43, are prime numbers =37,41,43 Write 4/7 as a percent= 57.1%

Math
30 divided by 5 multiply by 3 subtract 2 then there is a line and under the is 2minus2divided by 3 any better?

Math
no Ill try to write it out thirty divided by 5 times 3 minus 2 all of this is over 2 minus 2 divided by three any better?

Math
im lost evaluate 30 divided by 5*3-2 all over/2-2divided by 3

Algebra
how to plot the equation and find the y intersect of y + x = -10 thank you

AMERiCAN
(1) What is a compromise? (2) How did the Great Compromise satisfy both small states and large states? (3) Describe the Three- Fifths Compromise? (4) In your opinion, which was more important in 1787, maintaining slavery or creating national unity?

AMERiCAN
Describe why Thomas Paine believes that it is “common sense” to declare independence?

Math
The first three elements of a number sequence are 1, 2, 3. ( As you can see, the middle number is one less than the product of its neighbors. This is true for the rest of the elements of this sequence. Now add the elements of the sequence up to a certain element. Could this ...

math
stumped on rounding to the nearest tenth. Decimals 1758.2 thank you

Quotes
Thank you so much. Now I get it!

Quotes
In the early years of confideration, they had a scope build on some beliefs and good intentions.

Quotes
Confederation George Washington said this

Quotes
I've read and tried to find information on what this quote means, but I still don't understand it. What does this quote mean? "We have had too good an opinion of human nature in forming our confederation."

GEOMETRYY
Two of the vertices of triangle ABC are A (1,2) and B(9,6). the slope of AC is 1 and the slope of BC is - 1/3. what are the coordinated of B? is theree a formulaa?

math
(7x8)-6x2+7 56-6x2+7 56-12+7 44+7 51

Algebra
Solving inequalities with both multiplication and addition 4(x-3)-2< 3-5(x+7) Can someone take me through this step by step? I do want to solve it on my own. Thank you

science
I say keep the same pet change the food and treats.

What carries secretions for export from cell? organelles What buds off lysosomes? Golgi complex

science
cell

20_140

algebra
4+100

algebra
solve, using addition 5.4= x-1.3 write an integer or a decimal

MATH
Show that if the equation of the line can be written as x/a + y/b = 1, then the line intersects the x-axis at (a, 0) and the y- axis at (0,b). i`m lostt.

math
a person with no more than \$15,000 to invest plans to place the money in two investments. one investment is high risk, high yield: thfe other is low risk, low yield. at least \$2,000 is to be plaaced in the high-risk investment. furthermore, thfe amount invested at low risk ...

math
find the midpoint of the line segment having the given endpoints. (8, -4) and (-7,8)

math
yes, there is a straight line

math
find the distance between the two points. 8,0 and 0,6. round to the nearest hundredth. please help

math
decide if the given number is a solution to the given equation. x/4 = 5;20

math
thank you, the site you recommended was the only thing i could find too. thank you for trying

math
can someone explain what vertex arrangements are? And how to find them.

math
what is the z-score for the given raw score, mean and standard deviation, assume a normal probability dist. raw score=66,u=60, and 0=6 u and o are those wierd symbols is the answer 1, 10, 6, or 66

math
Decide which variables described is likely to have a normal or near normal distribution a. the number of courses remaining until graduation for the students in a small liveral arts college b. the SAT math scores for students in an advanced placement math class i think the ...

math

math
two cards are drawn without replacement from a 52 deck of cards. what ae the odds against drawing a club and a diamond? can you walk me through this? thank you

math
how many batting lineups of the nine players can be made for a baseball team if the cathcher bats first, the shortstop second and the pitcher last?

math
how many 4 character license plates are possible with 2 letters of the alphabet followed by 2 digits, it repetitions are allowed? if repetitions are not allowed?

math
on a tv game show, the contestant is asked to select a door and then is rewrded with the prize behind the door selected. if the doors can be selected with equal probability, what is the expected value of the selection if the three doors have behind them a 40 thousand dollar ...

Chemistry
I am trying to study for my final exam. I am just trying to do my review packet and i just want to see if i am getting them correct. but what i got was 1) 3,3 2) 2 3) 120 4) idk how to do that one.

Chemistry
#1) The Lewis structure of PF3 shows that central phosphorus atom has ___ nonbonding and ___ bonding electron pairs. #2) How many equivalent resonance forms can be drawn for CO3^-2? (carbon is the central atom) #3) The bond angle in NF3 is slightly less than ___? #4) Sample of...

chemistry
The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 30.0C, the total pressure is 980 mm Hg.The vapor pressure of ethanol at the new temperature ...

geometry
how do u do statements and reasons

CRT 205
100 words per question in the future, how will thinking critically influence the ways that you read? Write?, Process Information?

social studies
I am trying to unsramble a city the word is i tall tacks ye. Thanks

algebra
I need help with this problem (7,7);4x+5y=9

College Accounting
Re: Homework Text: College Accounting, 19th Edition Page 227-229 Can you provide me with the trail blances for May: Comprehensive Problem 2 - The General's Favoriate Fishng Hole. I am really having a problem with this assignment and I would greatly appreciate your help. ...

College Accounting
Re: Homework Can you provide me with the trail blance for May: Comprehensive Problem 2 - The General's Favoriate Fishng Hole. I am really having a problem with this assignment and I would greatly appreciate your help. Thank you Diana Couturier

On March 5, 2009, Andy, a local MP3 supplier, calls Betty, a local electronics chain retailer, offering to supply her with 1000 red IPODS, 1000 black IPODS, 1000 white IPODS and 1000 green IPODS at \$ 200 per IPOD which Betty agrees to. After hanging up the phone, Andy ...

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