Enrique

At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g)= SO3(g) + NO(g) If all four gases had initial concentrations of 0.840 M, calculate the equilibrium concentrations of the gases.

16 years ago

hi At a particular temperature, K = 1.00 102 for the following reaction. H2(g) + I2(g)= 2 HI(g) In an experiment, 1.73 mol H2, 1.73 mol I2, and 1.73 mol HI are introduced into a 1.00 L container. Calculate the concentrations of all species when equilibriu...

16 years ago

Consider testing the hypothesis: H0:ƒÊ=100 vs. Ha:ƒÊ‚100. If the value of the test statistic is equal to 1.36, then the p-value is: A. 0.4131 B. 0.1738 C. 0.2066 D. 0.9131

14 years ago

Estimate the area under the curve f(x)=x^2 between x=0 and x=1 using 4 rectangles of equal width if a) The height is taken from the right endpoint b) The height is taken from the midpoint. I have no idea what exactly this question is asking me to do is th...

13 years ago

Solve the equation by first factoring the quadratic expression. 1. x2+4.5x=0 2. x2-9x=0 3. -x2+10x=0

12 years ago

3.29x=5.5√(x)+10,000 How in the world do I solve for x without using a calculator? I swear I've been on this for hours. I know the answer is 3133 because I estimated the answer and then began plugging in numbers until I got to the actual answer.

10 years ago

$85.00 gave to bill and gave server 20%tip whats the tip

5 years ago

4.2 decreased by the quantity 12 plus a number

4 years ago

Which of the following angles are coterminal to θ=5π/6? Select all that are True. 30∘ −11π/6 −7π/6 −330∘ 17π/6 5pi/6=150 degrees I believe it is -7pi/6 and 17pi/6 Is it

3 years ago

The angle of elevation from a point on the ground to the top of a tree is 38 degrees. The angle of elevation from a point 22.5 ft farther back to the top of the tree is 28.2 degrees. Find the height of the tree to 2 decimal places. could you help me out.....

3 years ago

The angle of inclination of a road is often expressed as percent grade, which is the vertical rise divided by the horizontal run (expressed as a percent). A 8 % grade corresponds to a road that rises 8 ft for every 100 ft along the horizontal. Find the an...

3 years ago

A surveyor standing on a hill 27 feet high looks at a building across a river. The surveyor determines that the angle of depression to the base of the building is 24∘56′ and the angle of elevation to the top of the building to be 49∘6′. Calculate the heig...

3 years ago

I said our name to myself, opening my mouth wide for the organ blast of the a, trilling my tongue for the drumroll of the r, All-vah-rrr-es! —“Names/Nombres,” Julia Alvarez Identify the influence Alvarez writes about in the passage. Provide an answer by u...

2 years ago

Which passage from "Names/Nombres" best supports the inference that Alvarez started to write at a young age? At the hotel my mother was Missus Alburest, and I was little girl, as in, "Hey, little girl, stop riding the elevator up and down. It's not a toy....

2 years ago

Diagamoslo = le's say it. Decimos el secreto? Si, digamoslo. Let's say it. In this case, LO is a direct objct pronoun. Digamoselo = let's say it to him. The "se" is the indirect object prooun "le" which becomes "se" before the direct "lo,los,la,las". Le d...

13 years ago

You should begin by calculating the original, unreacted concentrations of H2, I2, and HI. From there you can set up a Kc equation and solve for the change in concentrations, which can be easily used to find the concentrations after equilibrium is achieved...

10 years ago

What DrBob222 said: the step after that is to convert moles of CCl4 to moles of CS2. Seeing as you are still confused after being told the steps, I imagine you don't know how to do that. To convert from moles between substances, cross multiply the moles o...

10 years ago

That's hard bro... Try maybe making 2 eaquations: an even degree polynomial that goes from 0 to 650ish pretty much instantly, and then make a second equation that connects at some point to the first equation. This second equation, I recommend, should be o...

10 years ago

It didn't say solve without, I just really wanted to figure out a way to show work and to keep my self esteem intact. I did the squaring on both sides, moved everything to one side and made the other side be 0, and used quadratic equation. Thanks ^.^

10 years ago

Paula's percent error is over 1000%

10 years ago

It means I wanted to. I really like math and don't enjoy using calculator. Don't get inquisitorial about it, doesn't really matter.

10 years ago

That's wrong, Steve. You're thinking the length given is the length of the smaller side, but it's actually the length of the diagonal. So one would have to use a^2+b^2=c^2 to find the length of the sides, and from there area can be found. so it'd be a= th...

10 years ago

There are 2 answers though. It could also be 10 and 20. I saw this when I solved it by making the quotient of their ages 5 years ago be equal to Joy's age-7 in one formula. (2x-5)/(x-5)=x-7 multiply both sides by x-5, move everything to one side, and fact...

10 years ago

Don't quote me on this, but my logic in picking an answer (if you meant inverses instead of integers in your question) is that the equation's roots are a positive and a negative, thte negative having a larger absolute value. This can be seen by the fact t...

10 years ago

4. If you just move golf to the last 4 days of vacation, he only has 3 days to play croquet, and therefore 4 days can be used for tennis.

10 years ago

So in other words, how many factors of 1000000 are perfect squares?

10 years ago

I'm not sure of what you did, I got different numbers. Do expect me to be wrong though, I haven't done any chemistry since I took the AP chem test in May. The initial, unreacted concentrations I got were .506M H2, .173M I2, and since there is no HI formed...

10 years ago

Sorry, 56=[HI+2x]^2/([H2-x][I2-x])

10 years ago

El verano es uno de mis tiempos favoritos del año. Me encantan (encanta) el tiempo y todas las actividades que pueden ser hechas en el venía (verano) . En este ensayo hablaré de lo que solía hacer en el verano cuando era un niño. Entonces (Entonces, altho...

10 years ago

From experience, I can say it's negative. Most - if not all - reactions in which an adhesive, glue, cement or whatever you wanna call it hardens, it will be exothermic and entropy goes down. I also asked my chem teacher few months back about that, she sai...

10 years ago

DrBob is right and all but i just had a thought as i solved it about converting. I'd recommend converting feet to cm first since 1cm^3=1mL and that's a lot more convenient, easier to remember, and if you're in the middle of a test chances are its not gonn...

10 years ago

Don't do the string thing, it's not practical. You wanna know how to solve mathematicaly. So I'm gonna assume you know clockwise and counterclockwise, I would hope. Ask if you don't. Say you have point (1,0), and you rotate it 90° clockwise around the ori...

10 years ago

x[f]=at^2/2+v[i]t+x[i] Brackets dennote a subscript. You're given x[f], a, t,and v[i]. You can just plug in their values into the formula and solve for x[i]. The horizontal velocity is irrelevant, the height of the tower is the initial position of the arr...

10 years ago

Initial concentration of acetic acid is .8326M. The other 2 substances involves, C2H2O2- and H+ or H3O+, will be 0 initially. Since they give you equilibrium concentration of H+, you can just subtract that from the initial acetic acid concentration to fin...

10 years ago

Yes

10 years ago

Write and balance the equation first.

10 years ago

No, it's estimately 15/3

10 years ago

Well, yes. Do you not understand why that answer is so?

10 years ago

It's 30,000J

9 years ago

37.5 Square Route = 878.4 - 1782.2 = Simplify to nearest concention. = 17.5%

7 years ago

Thank you....nothing else ..correct?

3 years ago

Thank you

3 years ago

that 12 was a typo.....It was from another example that the teacher showed us... thank you

3 years ago

“Back home, my tíos and tías, and primas, Mami and Papi, and mis hermanas had a party for me with sancocho and a store-bought pudín, inscribed with Happy Graduation, Julie.” —“Names/Nombres,” Julia Alvarez Which inference would this passage best support?...

2 years ago

I got several wallets and a suitcase with my initials and a graduation charm from my godmother and money from my uncles. The biggest gift was a portable typewriter from my parents for writing my stories and poems. Someday, the family predicted, my name wo...

2 years ago

got several wallets and a suitcase with my initials and a graduation charm from my godmother and money from my uncles. The biggest gift was a portable typewriter from my parents for writing my stories and poems. Someday, the family predicted, my name woul...

2 years ago

"I got several wallets and a suitcase with my initials and a graduation charm from my godmother and money from my uncles. The biggest gift was a portable typewriter from my parents for writing my stories and poems. Someday, the family predicted, my name w...

2 years ago

Read the passage from "Names/Nombres" by Julia Alvarez. When we arrived in New York City, our names changed almost immediately. At Immigration, the officer asked my father, Mister Elbures, if he had anything to declare. My father shook his head no, and we...

2 years ago

Read the passage from "Names/Nombres" by Julia Alvarez. When we moved into our new apartment building, the super called my father Mister Alberase, and the neighbors who became mother's friends pronounced her name Jew­lee-ah instead of Hoo-lee-ah. I, her n...

2 years ago

Read the passage from "Names/Nombres" by Julia Alvarez. My Dominican heritage was never more apparent than when my extended family attended school occasions. For my graduation, they all came, the whole lot of aunts and uncles and the many little cousins w...

2 years ago

Which choice is a theme? Love triumphs over hate. A young girl meets a boy. A woman helps a beggar. Crops fail after a drought.

2 years ago

Read the passage from "Names/Nombres" by Julia Alvarez. By the time I was in high school, I was a popular kid, and it showed in my name. Friends called me Jules or Hey Jude, and once a group of troublemaking friends my mother forbade me to hang out with c...

2 years ago

The theme of a text is the same as the topic of the text. usually stated directly in the text. not one of the main ideas in the text. a message about the topic of the text.

2 years ago

The theme of a text is the same as the topic of the text. usually stated directly in the text. not one of the main ideas in the text. a message about the topic of the text.

2 years ago