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Posts by Dani

Total # Posts: 368

Chemistry
Use the data in the table to calculate the equilibrium constant for the following reaction. HCOOH(aq)+ OH ?(aq) equilibrium reaction arrow HCOO?(aq)+ H2O(l) HCOO is 5.9e-11 (Kb) HCOOH is 1.7e-4 (Ka) Not sure how to find the equilibrium constant given this information

Math
Awesome thanks! For some reason when I tried to Google it wouldn't load but that link did! Thanks Ms. Sue! Have a nice rest of your day! ~Dani

Math
Hi! I quickly just need to know what is an irrational number? Thanks! ~Dani

ed tech HELP PLS
c a d I got 100%

Science
It is winter where Jenna lives. It’s been snowing all day, but now the snow has changed to sleet and then to freezing rain. What is happening to cause these changes? In your answer, explain how snow, sleet, and freezing rain form.

English
Which type of context clue can be used to determine the meaning of the capitalized word? As the winning team rushed onto the court to celebrate their last-second victory, the losing team headed to the locker room in DEJECTION. Comparison Example Restatement Description

science
Seriously, are they correct?

Math
I have 3 1-6 cubes looking for different ways to roll the sum of 12, How many ways will it be?

Alegrebra 2
It doesnt give thoughs things this is all the question says

Alegrebra 2
What is an equation of a parabola with the giveb focus Focus:(-2,0)

General
Interesting

Government
Its american government

Government
The president is the author of the nation's public policies in his or her role of A commander in chief B chief legislator C chief of party D chief citizen

Algebra 2
What is the sum of the arithmetic series 5 (sigma sign) n-1 (3n-2)?

math
Hi we have to the same name!

math
How far from the wall must you place a ladder of length 12m. if the ladder is to touch a point 10m above the ground?

Math
21.3

Math-Check my answer
Cool, thanks

Math-Check my answer
Solve the inequality. Explain all steps and identify the properties used. 3a-4 less than or equal to 5 My answer: First, you add 4 to both sides: 3a - 4 + 4 <= 5 + 4. Then you get this 3a <= 9. Next I divide both sides by 3: 3a/3 <= 9/3 a <= 3 Tell me if this makes...

Mathematics
I see. Thanks!

Mathematics
Hi! I don't understand this Math problem and I was wondering if I could have some help? It would be greatly appreciated! Thanks! C = 5/9(F - 32) The equation above gives the Celsius temperature, C, corresponding to the Fahrenheit temperature, F. Find the Celsius ...

Government
How do party whips influence legislation?? Please help!!

chemistry
Hi! It appears we both have the same name! I always use this name and now someone else has too!

chemistry
Calculate the work done (in joules) when 5.0 mole of water is frozen at 0°C and 1.0 atm. The volumes of five moles of water and ice at 0°C are 0.0900 L and 0.0980 L, respectively.

chemistry
Calculate the heat of decomposition for this process at constant pressure and 25°C. (Look up the standard enthalpy of formation of the reactant and products in the table; ΔH°f(BaCO3(s)) = -1218.8 kJ/mol, ΔH°f (BaO(s)) = -558.2 kJ/mol and ΔH°f (...

chemistry
Calculate the heats of combustion for the following reactions from the standard enthalpies of formation listed in Appendix 2. (ΔH°f (HgO(s)) = -90.7 kJ/mol and ΔH°f (FeO(s)) = -272 kJ/mol.) (a) 2 Fe(s) + O2(g) 2 FeO(s) kJ (b) 2 CH3OH(l) + 3 O2(g) 2 CO2(g) + 4...

chemistry
Ethanol (C2H5OH) and gasoline (assumed to be all octane, C8H18) are both used as automobile fuel. If gasoline is selling for $1.45/gal, what would the price of ethanol have to be in order to provide the same amount of heat per dollar? The density and ΔH°f of octane ...

Language Arts
Cool, thanks! And they were right!

Language Arts
Hi. I need to check my answers and I would hate to get them wrong because of one little mistake. Thanks! 1. An argumentative essay should present a clear thesis statement, provide strong evidence to support the thesis, and _____. a. Address counterarguments b. Repeat main ...

Social Studies
1. Correct 2. Correct 3. Correct

English
I went with A, it was correct!

English
In 'first confession' Gran is described as a ? A. Flat character < B. Round character C. Stock character D. Antagonist < I think it's either A or D... not sure which one

chemistry
A 45-kg person drinks 390. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 17% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? [Hint: The work done in ascending is...

chemistry
A 77.40 kg piece of copper metal is heated from 19.6°C to 337.3°C. Calculate the heat absorbed (in kJ) by the metal.

chemistry
A sheet of gold weighing 11.4 g and at a temperature of 15.6°C is placed flat on a sheet of iron weighing 24.2 g and at a temperature of 54.9°C. What is the final temperature of the combined metals? Assume that no heat is lost to the surroundings. - (11.4)(0.129)(Tf &#...

chemistry
q = (271)(1)(1.126)+(1769)(1.126) = 2297.04 q/.1219 = 18,843.64 J/g = 18.8436 kJ/g this isnt right

chemistry
A 0.1219-g sample of solid magnesium is burned in a bomb calorimeter that has a heat capacity of 1769 J/°C. The calorimeter contains exactly 271 g of water, and the temperature increases by 1.126°C. Calculate the heat given off by the burning Mg, in kJ/g and in kJ/mol.

L.A.-Check Answer
Cool thanks!

L.A.-Check Answer
According to "Life Without Gravity" why can astronauts' muscles become weak? a. Without gravity, the blood is rerouted from the legs to the head. b. Without gravity, the body "grows" as much as several inches. c. Without gravity, eating is difficult, so...

English L.A.
Yay! I got it right!

English L.A.
Thanks again Ms. Sue! ^_^ ;-)

English L.A.
Which of the following best describes an expository essay? a. An essay that uses casual, conversational language. b. An essay that tells a story about a real-life experience. c. An essay that explains an idea by breaking it down. d. An essay that uses humor to achieve the ...

English
Were those the correct answers Angel?

English
✓ supernatural gods or animals ✓ fantastic settings ✘ humorous elements that entertain the reader ✓ an attempt to explain the origin of the universe ✘ characters found in everyday life ✓ conflicts between worlds, beings, self, or ...

L.A.
Would't it be rising action?

L.A.
What is the part of the story in which the conflict eases?

Math
Awesome, thanks!

Math
1/2 divided by 1/2=1?

M.A.T.H.
Yes, an example would be... -7/9x3/5=-7/15

history
I think Chesapeake Affair

Math
Thanks Steve

Math
Could someone please help me if they know what the answer is?

Math
The city highway department bought 3/4 tons of salt to put on the road when it snows. They have used 2/7 of salt. How many tons has the city highway department used?

Math
Thanks

Math
And #5 should be (-2 1/5) not (2 1/5). Sorry about that :-/

Math
Sorry about #2, it should be -3 1/5+(-6 1/2)=_____

Math
What is... -1/2+1/3=_____ -1 1/5+-(-6 1/2)=_____ 5/8-(-2/8)=_____ -9/10-2/5=_____ 6 3/5-(2 1/5)=_____

math
Is the question how much they would cost together? Just clarifying. :-) If so... $0.18x14=$2.52 and... $0.69x11=$7.59 Then add... $2.52+$7.59=$10.11 Overall, the total is $10.11

chemistry
One isotope of a nonmetallic element has mass number 16 and 7 neutrons in the nucleus. The anion derived from the isotope has 10 electrons. Write the symbol for this anion. I thought the answer was O^2- but this isnt correct

chemistry
The diameter of a neutral neon atom is about 1.4 ✕ 10^2 pm. Suppose that we could line up neon atoms side by side in contact with one another. Approximately how many neon atoms would it take to make the distance from end to end 1 cm? I did 1.4 x 10^2 pm x (1 m/10^9 pm) ...

English
Wow! I'm surprised people are still commenting on this. And yes, this is actually the same person who posted this, and I'm not kidding it is!

English
Could you help me with an answer? What characteristic of the narrator in "The Night the Bed Fell" ends up being key element in the story?

English
My answer is C. too

Math
Thanks, that was helpful

Math
Anybody there?

Math
Quick question: What is 9 squared written in standard form? It should be 81 correct?

S.S.
If anybody could correct my answers, that would be great!

S.S.
1. For centuries, Arab Muslims had generally welcomed Christian pilgrims to the Holy Land. Which group later took control of the Holy Land, attacked pilgrims, and led Pope Urban to call for the crusades? a. Mongols b. Byzantines c. Seljuk Turks** d. North Africans 2. The ...

Math, Calc
Use implicit differentiation to find an equation of the tangent line to the curve at the given point x^2+2xy+4y^2=12. Point (2,1). (Eclipse)

math
Thank you.

math
How do I write 0.8% as a fraction in lowest terms? I thought I put .8 over 10 and then multiplied by 10/10 to get rid of the decimal. So then I would have 80/100 and then reduce from there which would be 4/5, but my teacher says the answer is 1/125. Thank you.

chemistry
The compete oxidation of 2g of an aldehyde A by acidified potassium chromate produces 2.1g of carboxylic acid B which is dissolved in 50 ml of distilled water . The obtained solution reacts with exactly 1.05 g of solid lime to form salt C a) Write the equation of the reaction ...

physics
An isolated capacitor of unknown capacitance has been charged to a potential difference of 100 V. When the charged capacitor is then connected in parallel to an un- charged 10.0 μF capacitor, the potential difference across the combination is 30.0 V. Calculate the unknown...

physics
A diffraction grating having 180 lines/mm is illuminated with a light signal containing two wavelengths, λ1 = 400 nm and λ2 = 500 nm. The signal is incident perpendicularly on the grating. What is the smallest angle at which two of the resulting maxima are ...

physics
A metal rod is forced to move with constant velocity along two parallel metal rails, connected with a strip of metal at one end. A magnetic field of magnitude B = 0:350 T points out of the page. a) If the rails are separated by L = 25.0 cm and the speed of the rod is 55 cm/s, ...

physics
A wire has a resistance of R. What will the wire's resistance be if it is stretched to four times its original length without changing the volume of the wire? (Express in terms of R.) R=V/I; 4R=V/I; R=V/(I/4) I think this is right? help please.

physics
When 115 V is applied across a wire that is 10 m long, the magnitude of the current density is 1.4*10^4 A/m2. Find the resistivity of the wire. R=V/I; R=pL/A => V/I=pL/A => A(x)V/I(x)L=p :(π(5^2))(115)/(1.4*10^4)(10) Is this right? Do I just plug and chug now?

itt-tech
weight=mass(x)force of gravity W=(7,000)(9.8) w=?

physics
A convex spherical mirror has a radius of curvature of 50 cm. Determine the position and magni cation of the image of an object located 35 cm in front of the mirror. i only know how to do concave mirrors. i have the equations as 1/f=1/d0+1/di for position and m=hi/h0=-di/d0 ...

Math10-3
A 2 by 6 is 1 1/2 in thick. how high would a stack of 2 by 6 boards be if the stack is 10 boards high? Express your answer in feet and inches

English help (check answers)
C B B B A THOSE ARE 100% RIGHT

Math patterns and rules unit test
Hi. No offense amanda but I think your answers are wrong! I think you typed up random answers because either I have all of the answers wrong or you did them randomly. Please don't hate on me so bye.

math
the temperature at 8 a.m. was 65 degrees. By 11 a.m. the temperature had increased 17 degrees. What was the temperature at 11 a.m. ?

math
Let f(x)=2x^2−7x+5 a IS A SQUARE

math
Let f(x)=2x2−7x+5 and g(x)=x2+9. Find f⋅g, and f/g i don't understand how to do this.

Technology
Haha. I believe they meant that.

Technology
Yay!

Technology
100%!

Science
it is b.

Language
1.D. 2.A. 3.C. Also, @Anyonymous @xKpopx are you both the same person or is it just a coincidence that you both posted on the same date,day, and time?

physics
Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. Speaker B is 12 m to the right of speaker A. The frequency of the waves emitted by each speaker is 686 Hz. Sound velocity is 343 m/s. You are standing between the speakers, along ...

Language Arts
Of course!

Language Arts
Hi everyone! For you people looking to check your answers, here they are! I got 100% with these. Trust me, they are right. Although, make sure your on the same lesson or else they'll most likely be wrong. Good luck! And early Merry Christmas! Also, happy early New Year! If...

general physics
wouldn't time be 2.3 times 11/25 then? thank you

general physics
a person horizontally pushes a 25 kg couch. Applied force is 18N and average resistive force is 7N. its pushed from rest to a final speed of 2.3 what is the distance pushed the time taken and the power delivered to push couch

Physics
A boy swings a yo-yo around his head with a force of 50N what is the gravitational force of the yo-yos mass and distance is doubled

metreology
0 degrees Fahrenheit

U.S Hisotry. Please check my answers.
Why is the United States often referred to as the melting pot? -Various cultures from many countries have "melted" together to create what America is and how American culture is defined today** -Most American citizens' native customs and traditions will "...

english
what is the summary of - who’s the killer? popular justice and human rights in a south african squatter camp , by nancy schemer hughes

math
@Melissa bowers Hope your dad's okay. @Derpy Pegasus @Damon Thanks

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