Monday
July 6, 2015

Posts by Natalie


Total # Posts: 556

chemistry
What is the original molarity of an aqueous solution of ammonia (NH3) whose pH is 11.10 at 25 degrees C? (Kb for NH3=1.8 x 10^-5)
December 8, 2010

Chemistry
An aqueous solution of an unknown, monobasic weak base has an initial molarity of .176 M and a final[OH-] of .0000158 M. What is the Kb of the unknown base?
December 8, 2010

Chemistry
What is the original molarity of a solution of a weak acid whose Ka=3.5 x 10^-5 and whose pH is 5.28 at 25 degrees C?
December 8, 2010

Chemistry
Calculate the pH of an aqueous solution at 25 degress C that is .41 M in phenol (C6H5OH). Ka for phenol=1.3 x 10^-10.
December 8, 2010

college
part 2: take your calculated velocities, divide them, and inverse tangent
December 1, 2010

home economics
What is the "current macroeconomics situation"?
November 27, 2010

Chemistry
A mole of methane reacts with 64g of oxygen at 1 atm, 425 K. There are two ways in which methane can react with oxygen. It can either form water vapor and carbon dioxide or water vapor and carbon monoxide. After reaction the final gas density is 0.7282 g/L. What is the ...
November 18, 2010

math
how do i solve this 1/6 +4(2/5-7/10)=
November 18, 2010

chemistry
The quantum numbers: n = 1, l = 0 and ml = 0 ; can occur together to specify an orbital
November 15, 2010

chemistry
For n = 2, one of the values of l is 0
November 15, 2010

ochem
when the concentration of CHBr3 and NaOH are both .145, the rate of the reaction is .0040 M/s. What is the rate of the eaction if the concentration of CHBr3 is doubled?if the conc. is halved?if the two conc. are both increased by a factor of five? CH3Br+NaOH-->CH3OH+NaBr
November 14, 2010

ochem
when the concentration of CHBr3 and NaOH are both .145, the rate of the reaction is .0040 M/s. What is the rate of the eaction if the concentration of CHBr3 is doubled?if the conc. is halved?if the two conc. are both increased by a factor of five? CH3Br+NaOH-->CH3OH+NaBr
November 13, 2010

ochem
thank you so much
November 13, 2010

physics
A light spring with force constant 3.00 N/m is compressed by 6.00 cm as it is held between a 0.350 kg block on the left and a 0.700 kg block on the right, both resting on a horizontal surface. The spring exerts a force on each block, tending to push them apart. The blocks are ...
November 9, 2010

10th grade
why does Henry believe that compromise with the British is not a workable solution?
November 8, 2010

Education
thank you! that makes sense!
November 4, 2010

Education
what is the difference between terminating a teacher and nonrenewing a teacher's contract
November 4, 2010

physics
A car is traveling at 45.0 mi/h on a horizontal highway. (a) If the coefficient of static friction between road and tires on a rainy day is 0.100, what is the minimum distance in which the car will stop? ____ m (b) What is the stopping distance when the surface is dry and &...
November 1, 2010

Chemistry
If 10.0g of Pb at 25.0oC absorbs 1.00kJ of heat, what is it's final temperature?
November 1, 2010

Biology/DNA
When doing a DNA extraction, what advantages does a TE buffer provide to DNA that water cannot?
October 20, 2010

physics
An athlete throws a basketball upward from the ground, giving it speed 10.8 m/s at an angle of 64.0° above the horizontal. (a) What is the acceleration of the basketball at the highest point in its trajectory? (b) On its way down, the basketball hits the rim of the basket...
October 19, 2010

physics
9.8 gravity
October 19, 2010

physics
Heather in her Corvette accelerates at the rate of (3.40ihat- 2.00jhat) m/s2, while Jill in her Jaguar accelerates at (1.00ihat + 3.40jhat) m/s2. They both start from rest at the origin of an xy coordinate system. Determine the following after 5.50 s. (a) What is Heather's...
October 19, 2010

Chemistry
A solution contains .370 mol of isopropanol (C3H7OH) dissolved in 1.700 mol of water. A) What is the mole fraction of isopropanol? B) What is the mass percent of isopropanol? C)The molarity of isopropanol?
October 18, 2010

physics
a cannon fires at a castle. the walls are 9m high. if the cannon is pointed at an angle of 60 degrees and has a muzzle velocity of 35m/s will the cannon balls go over the wall or hit the wall?
October 18, 2010

physics
a golf ball is struck at a 45 degree angle and flies off at 28m/s. what is the range? using the SOH CAH TOH method and the range formula.
October 18, 2010

physics
As some molten metal splashes, one droplet flies off to the east with initial speed vi at angle θi above the horizontal, and another droplet flies off to the west with the same speed at the same angle above the horizontal, as inthe figure. In terms of vi and θi, find...
October 15, 2010

math
What is the cube root of x to the 7th power?
October 14, 2010

Chemistry
what is the answer??
October 11, 2010

library media center
On EBSCO .NOVELIST PLUS : IN Ultramarathon MAN ,who is REBECCA Sigmon ? That how is the question posted.Thank you for your help.
October 8, 2010

novelist plus/library media center
Im ultramarathon Man,who is Rebecca Sigmon?
October 8, 2010

english
How many categories are listed under Graphic Novels? can you help me please?
October 8, 2010

english
In ultramarathon man, who is Rebecca Sigmon? can you help me ?
October 8, 2010

Math
The House of Representatives has 435 members. If a committee has a prime number of members, and that number is a factor of 435, then how many members can be on the committee?
October 6, 2010

Chem/DNA
Convert 10mg/mL into micrograms/microliters
October 5, 2010

Us History
hi ms.sue i have a question that i need help .thanks for all the help that you had given me =) i really appreciate it. so i need help in this ,i dont undesrtand it . what would be the probable result of the national government sending military force against the state?
October 5, 2010

Us History
what are the three clauses of the fourteenth amendment that articulate how people are to be treated by the united states government ?who shall be entitled to the various provisions ? i read something online but i dont understand anything
October 4, 2010

calculus
Wow thank you guys all so much. I'm dreading a whole semester of calculus. (stats was so much easier) Thanks especially for explaining everything, so now I understand it.
September 28, 2010

calculus
Alright. One last question. So I'm wondering if my online homework answer is wrong, because I have x and I've plugged x back into the y = (-1/5)x + (23/10) and I've solved for y. y = 3.72 Now please tell me if I'm just making a fool of myself again and am ...
September 28, 2010

calculus
Okay. My bad. I'm sorry all, I apparently can't do basic math. Thank you everyone for helping me. I really appreciated it.
September 28, 2010

calculus
I've also just tried: -1/5 = 2x + 14 x = -.568 and plugged that into the 'parallel' equation to solve for y. y= 2.4136 but that still didn't work out.
September 28, 2010

calculus
I'm sorry. For the life of me, I just can't figure out this problem. Okay, so if the slope can't be an equation, can i solve for x by setting y' equal to zero? or do you mean 2x + 14 = (-1/5) x + (23/10) I tried both ways I just listed, and they turned out ...
September 28, 2010

calculus
Yes. Sorry. I did get it up to the derivative of y' = 2x + 14 by using the f'(x) = [f(x+h) - f(x)] / h formula. and did simplify the other equation into the slope-intercept form. but do I just plug the derivative into the 'slope-intercept' equation? because isn...
September 28, 2010

calculus
Find the point on the curve y=1 x2+14 x such that the tangent line to the curve is parallel to 2 x + 10 y = 23
September 28, 2010

Calabasas HS
Not 100% sure if this is right, but here's what I think it is. M = mol/L .568 = mol/.0462 L = .0262416 mol 1.396 = mol/.0805 L = .112378 mol (.0262416 mol + .112378 mol) / (.0462 L + .0805 L) = M M = 1.0094077348
September 28, 2010

Chemistry/physics
Calculate the final temp. of 100g of Ag at 40 C is immersed in 60.0g of water at 10.0 C. SH of Ag is 0.065 cal/g/C SH of H2O is 4.184 J/g/C I can't figure out how to put delta T in the equation when I haven't found it yet :-\
September 26, 2010

Chemistry
The Specific Gravity of kerosene is 0.786. What is the volume occupied by 7.75kg of kerosene? Is it 7.75/0.786?
September 20, 2010

Chemistry
The Specific Gravity of kerosene is 0.786. What is the volume occupied by 7.75kg of kerosene? Is it 7.75/0.786?
September 20, 2010

Chemistry
so it's 7.75/0.786?
September 20, 2010

Chemistry
The Specific Gravity of kerosene is 0.786/ What is the volume occupied by 7.75kg of kerosene?
September 20, 2010

college
Caculate percent error of 10.92 and 10.43
September 15, 2010

3rd grade
i was given a spelling words. than it say 'put the spelling words in a collage' what that mean pls help
September 2, 2010

Geometry
An equation using the numbers 2,4,6 and 8 to get the answer to be nine. You may use multiplication, division, subtraction, addition, and parenthesis. im so stumped.
August 19, 2010

8th grade
robert has a piece of twine 3/4 yards long. he needs a piece of twine that is 2/3 of this length. how long of a piee of twine does robert need?
August 17, 2010

Dressmaking
Sweetkay i took the test and your number 8 answer was wrong
July 27, 2010

Physics
Given a velocity of 4m/s[E] and a second velocity of magnitude 6m/s (this is all that is given) Find the maximum and minimum values for the final velocity.
July 11, 2010

biology
yes that is true according to my intelligence. the taiga does have a rich humus layer on top and its a deep layer of clay .
June 6, 2010

english/8
Thank you.But I didn't use the word ideas on any of these definition
May 30, 2010

english/8
so for fourth one the answer is voice am I right
May 30, 2010

english/8
and I didn't use the word (ideas) on any of the definition
May 30, 2010

english/8
please Ms Sue tell me what is the answer
May 30, 2010

english/8
I dont know because I dont have the definitions do you have anything I can look on the computer
May 30, 2010

english/8
which one please help me
May 30, 2010

english/8
So you mean all of them are write and for the first I choose organization. thank you
May 30, 2010

english/8
Writing terms. Fill in the blanks. 1-final 9-topic 2-prewiting 10-introduction 3-idea 11-homonyms 4-conclusion 12-transition 5-voice 13-rough drapht 6-conventions 14-antonyms 7-persuasive 15-synonyms 8-organization -the( )writing trait judges your ability to divide your essay ...
May 30, 2010

english
how about the first one I dont know the answer
May 30, 2010

english
Writing terms. Fill in the blanks. 1-final 9-topic 2-prewiting 10-introduction 3-idea 11-homonyms 4-conclusion 12-transition 5-voice 13-rough drapht 6-conventions 14-antonyms 7-persuasive 15-synonyms 8-organization -the( )writing trait judges your ability to divide your essay ...
May 30, 2010

English
Thank You
May 29, 2010

English
Can you please proofread this for grammar and spelling. If there is anything that needs to be changed please let me know. I was denied financial aid for college because they said that my dad made to much money but my dad has been unemployed for the last year. So this is a ...
May 29, 2010

health/8grader
What are some characteristics of teens who use alcohol and/ or drugs? Can you help me answer this question ? thank you
May 27, 2010

geography / 8 grade
what two distinct social groups setteld argentina? ani idea?
May 26, 2010

geography
Where areas are heavily populated around the world and why? can you help me please? thank you
May 25, 2010

geography / 8 grade
Recentely, Russian troops fought which rebellions ethnic group ? The soviet Union . correct?
May 25, 2010

geography / 8 grade
Where do most of the people in the countries of southasia live? village. correct? thanks..
May 24, 2010

geography
thank you
May 24, 2010

geography
Where does lake Tanganyika lie? The Eastern border of-----. Democratic Republic of the congo. is my answer right?
May 24, 2010

geography
Where does lake Tanganyika lie? The Eastern border of-----.Tanzania. is my answer right?
May 24, 2010

geography
Where does one of the hottest and driest areasof africa run along? I am not sure is it atacama desert
May 24, 2010

geography
What island country of southern africa has plants and wildlife found in no other country? Madacascar . correct?
May 24, 2010

geogrraphy
what is the second most highly populated country in north Africa? Algeria Correct?
May 24, 2010

geography / 8 grade
What two major political groups make up the caribbean countries? please help .thanks
May 23, 2010

exploration
What untaped wealth does Nicaragua have? Can you help me answer this question please? yhank you
May 20, 2010

exploration
I need one reason why the people of Panama fought for control of the Panama Canal. thank you
May 19, 2010

Health
What is the name of national surgeon general?
May 17, 2010

poem
Do we have to start a limerick poem with There was ........,or I can started with one day I ....... thank you
May 16, 2010

math
A tree casts a shadow 18 m long. At the same time, the shadow cast by a 42-cm tall statue is 64 cm long. Find the height of the tree.
May 9, 2010

math
write the value of the 7 in each number: 127 473
April 19, 2010

geometry
an isosceles trapeziod has legs that measure 24 units each. If the perimeter of the trapezoid is 150 units, what is the legth of its median?
April 15, 2010

social studies
An early board game of ancient Egypt in which players moved their counters around the squares, please answer before 9:00 am (school starts) Luv Ya Bunches -Nat
April 12, 2010

vocabulary
glue:stick::thorns:
March 23, 2010

Biology
18. D 19. B 24. C 29. A All of these are to the best of my knowledge, but I am pretty sure they are correct. Hope this helps!!
March 20, 2010

World History
Both Stalin in the Soviet Union and Hitler in Germany instituted ruthless campaigns against supposed enemies of the state. Why do you think dictators need to find scapegoats for their nation's ills?
March 17, 2010

college
Smokey the Bear celebrated his 65th birthday this year. Why has the message of the forest service that “only you can prevent forest fires” changed in recent years to allow more fires?
March 16, 2010

Chemistry
what are the 6 type of energy?
March 13, 2010

Chemistry
For the reaction, 2SO2(g) + O2(g) ¨ 2SO3(g) + heat, at equilibrium, what will be the effect on the net amount of SO3 present if the temperature of the container is increased? A) The concentration of SO3 decreases. B) The concentration of SO3 increases. C) The ...
March 12, 2010

Chemistry
How much heat is needed to melt a 25 gram ice-cube at 0 °C? The molar heat of fusion for water is 6.01 kJ/mol. A) 6.01 kJ B) 8.35 kJ C) 150.25 kJ D) 3.34 kJ E) 9.22 kJ
March 12, 2010

Math
How would you expand 2.34 x 10^7 and 1.7 x 10^-12
March 6, 2010

Maathh
Describe the method of graphing by using intercepts.
March 4, 2010

Speech Quick ?
Would this be a good informative speech topic? Impact of media on society
March 3, 2010

English
In the novel Ceremony by Leslie Marmon Silko: Was Pinkie dependable?
February 28, 2010

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