# Posts by Sydney

Total # Posts: 506

**Chemistry**

14.5 mol O2 x 2 mol Al2O3 / 3 mol O2 = 9.67 moles. Correct?

**Chemistry **

Aluminum reacts with oxygen gas to produce aluminum oxide. How many moles of aluminum oxide would you expect to produce if you reacted 14.5 moles of oxygen gas with excess aluminum? 4Al +3O2 --> 2Al2O3 14.5 mol O2 x 4 mol Al / 3 mol O2 = 19.3 moles

**Chemistry **

Consider this reaction: Fe3O4(s)+4CO(g) --> 4CO2(g)+3Fe(s). If you begin with 0.03820 moles of iron oxide and 0.120 moles of carbon monoxide, how many grams of iron can be formed? Indicate which reactant is the limiting reactant. 0.03820 x 3/1= 0.1146 moles x 55.8 g 0.120 x...

**mtti ,mathematics **

Find the equation of a straight line through point k(3,-4)which is perpendicular to the line 3x-2y=3 in the form ax+by+c=0

**mtti**

A triangle has vertices a(0,2),b(3,7)and c(0,6)give that abcd is parallelogram find the area of parallelogram abcd

**pre calc**

why would it not be sin (46°) why is it sin(43°)

**pre calc **

A ship is tied to two anchors on the shoreline. The anchor line on the left forms a 46 degree angle with the shoreline and is 350 feet long. The anchor line on the right forms a 63 degree angle with theshoreline and is 283 feet long. Find the exact distance (in feet) between ...

**Math**

Use the addition property? and/or the multiplication properties to find a and b. If -4<x<5 then a<4x+5<b .

**Math**

A utility company charges $67.65 plus $1.1917 per therm for gas usage in excess of 50 therms. Last? winter, one? homeowner's bill ranged from a low of $196.35 to a high of $214.23. Over what range did gas usage vary? (in therms)?

**Physics**

If the trampoline can be considered as a spring with a spring constant of 4.5 x 10^5 N/m, what is the maximum depression of the trampoline? I started with this knowledge: E=1/2mv^2+mgy+1/2kx^2 This being the total of energies. I have done a similar problem in an example ...

**Math/Algebra**

The function T(x)=0.25(x-4400)+440 represents the tax bill T of a single person whose adjusted gross income is x dollars for income between ?$4400 and ?$17,600 inclusive. ?(a) What is the implied domain of the linear? function? ?(b) What is a single? filer's tax bill if ...

**Algebra**

The scale on a map is approximately 3/4 inch to 9 miles. If the distance from city A to city B measures 7.5 inches on the? map, how far apart are the two? cities?

**BIO HELP!!!!**

what type of evidence might paleontologist find that would allow them to see the big picture of a species evolutionary past?

**Algebra**

Sally can paint a room in 4 hours while it takes Steve 7 hours to paint the same room. How long would it take them to paint the room if they worked? together?

**Algebra**

If $4 can be exchanged for $113.72 in Russian Rubles, how many Russian Rubles can be obtained for $1100 ?

**Alg/Trig**

If h= -16t^2 + 112t represents the height of a? rocket, in? feet, t seconds after it was? fired, when will the rocket hit the? ground? (Hint: The rocket is on the ground when h equals=?0).

**Social Studies**

Okay, thank you again.

**Social Studies**

Thank you Ms. Sue. I meant to put B as my answer.

**Social Studies**

1. Early Greeks lived by a. fishing b. trade c. herding goats and sheep d. all of the above **** 2. Who could be citizens of Greek city-states? a. native born men and women **** b. free, native born, land-owning men c. land-owning women d. foreign-born men (Thank you for ...

**English**

I believe the answer is 4. (I know I'm not Ms. Sue but wanted to help) I might be wrong but I think I've done this before.

**Language Arts**

I agree with Writeacher, I think it's A.

**Algebra**

a small plane can fly 1575 miles in 7 hrs in a tailwind. On the return in a headwind, the same trip takes 9 hrs. find the speed in still air (no wind). Then the speed in wind.

**Algebra**

Kris had 2 burgers & 1 soda = 770 cal. jack had 3 burgers & 2 sodas = 1260 calories. use 2h+s=770, 3h+s-1260. how many cals are in a burger? soda?

**Algebra**

The longest side is 2 inches longer than the middle side. The shortest side is 14 inches shorter than the middle side. If the perimeter of the piece is 60 inches, what is the length of each side?

**Math <:•**

Trenton has to two hats and six T-shirt his hats are blue and red T-shirts are white green black yellow purple and orange how many ways can he wear the hats and shirts together

**Algebra**

In a basketball game, Sam scored 34 pts, consisting only of 3 point shots and 2 point shots. He made a total of 15 shots. How many shots of each type did he make?

**books**

I think its still relevant because its supports how our society is reading less and less (spark notes enotes wikipedia) leading up to a society like f451 it shows us how new technology has affected the communication between people as well as time to read and think It's ...

**books**

It is still relevant , but I meant to say How is Fahrenheit 451 still relevant to our culture today ?

**books**

is Fahrenheit 451 still relevant to our culture today

**poetry**

what's the significance of the poet's structure and style choice in the poem Dover Beach?

**english books**

Who was the first to challenge the book The Awakening.

**Math**

Dori claims that 3.52 is not a rational number because it is not written as a ratio of integers. Is she correct? Explain why or why not.

**language arts**

what is the simple predicate or verb of the sentence many stories relate the adventures of Paule Bunyan/

**math**

Mr. Rozario bought some numbers of apples and oranges in a ratio of 2:3. He gave away 2/3 of the apes to his sister and 23 oranges to his brother. The ratio of the number of apples to the number of oranges that he has now is 3:2. How many apple did he buy?

**Economics**

Match the following statements to the proper terms. 1. fiscal policies that favor increasing government spending rather than adjusting taxes 2. fiscal policies that favor cutting taxes rather than increasing government spending 3.A monetary policy designed to increase activity...

**Math**

An airplane is flying 100 km north and 185 km west of an airport. It is flying at a height of 7 km A) what is the straight long distance to the airport? B) what is the angle of elevation of the airplane, from the point of view of the airport?

**Chemistry**

An aqueous solution that 2.00 M in AgNO3 is slowly added from a buret to an aqueous solution that is 1.00×10−2 M in Cl− and 0.260 M in I−. When the second ion begins to precipitate, what is the remaining concentration of the first ion? I know that the ...

**Math-SineLaw**

Fire lookout towers are used to locate fires so they can be put out as soon as possible. These towers often work in networks and if two towers can see a fire at the same time, they can determine the location of the fire vey accurately. A.) Two forest rangers in towers see a ...

**Algebra**

your friend spends 6+5x minutes lifting weights and 9x+8 minutes running on a treadmill. write a polynomial that represents how much more time is spent running on the treadmill than lifting weights.

**Language Arts HELP!!!**

My guess is B, am i right?

**Language Arts HELP!!!**

What is the most likely reason that more of the characters in the giver do not act heroically? A. children are taught at an early age that heroes are not welcome in their community. B. IN a community where everything is the same, there is no need for a change or courage C. The...

**History**

B

**Social Studies**

I'm almost positive its D because most of the battles took place in the South.

**Language Arts**

On all of them?

**Language Arts**

My answers are D C A D D, am I right?

**Language Arts**

Could you please help me with these answers, I'm having serious trouble with this. What is the prepositional phrase in this sentence? Late last night there was a loud knock at the door. A. Late last night B. there was C. a loud knock D. at the door What is the participial ...

**English**

I know I'm a tad late but here are the answers (if I know which practice test your talking about) 1. D 2. A and C 3. C and D 4. B 5. D and A 6. C 7. A 8. A 9. C 10. A 11. D 12. C 13. D 14. A

**Genetics**

Suppose a dominant gene for a particular disease is found on the X chromosome and is denoted as X^D. The mother is X^D X^D and the father is XY. What percent of the couple's children will show the disease? I understand how it works if the X^D gene was recessive, but ...

**Art HELP PLEASE!! part 2**

My guess is that the answers are C and B, am I right?

**Art HELP PLEASE!! part 2**

Artists make shapes in the backgroud smaller than shapes in the foreground to communicate their distances from the viewer. How else might a landscape artist show shapes in the background to depict their distances from the viewer? A. show shapes with brighter colors B. show ...

**Math**

My guess here is 5 3/4

**Math HELP PLEASE QUICK!**

A radio signal travels at 3 x 10^8 meters per second. How many seconds will it take for a radio signal to travel from a satellite to the surface of Earth if the satellite is orbiting at a height of 3.54 x 10^7?

**science (URGENT!! CORRECT PLEASE))**

Did you get the answers right?

**science (URGENT!! CORRECT PLEASE))**

My guess is that the answers are: D B C

**Math**

bobpursely is right or its 2/4

**algebra 2**

A new development has 105 houses, all same size. if Evan can paint a house in 4 days and Joel can paint a house in 3 days, how many weeks will it take them working together to paint all 105? A normal work week is 5 days.

**To Sydney - stressed syllables**

Thank you for your help :)

**Health**

I think you're right with the first one and I think the second one is B.

**Language Arts**

Thank you Ms. Sue!

**Language Arts**

Is it B?

**Language Arts**

I still don't think I understand it :(

**Language Arts**

Identify the indirect object in the following sentence. Mom needs to give us money before we leave. A. mom B. us C. we D. leave I think it' C, am I right?

**Language Arts**

I honestly don't understand it

**Language Arts**

Ok, I think it's B

**Language Arts**

My guess is C, am I right?

**Language Arts**

what is the meter of line 27? "one by one towns pass by" A. stressed, unstressed, stressed, unstressed, stressed, unstressed, stressed b. unstressed, stressed, unstressed, stressed, unstressed, stressed, unstressed c. unstressed, unstressed, stressed, unstressed, ...

**math**

My guess is 30.

**Language Arts**

I just submitted it and the correct answer was D.

**Language Arts**

Which pronoun is used incorrect?

**Language Arts**

In which sentence is a pronoun used as a direct object? A. The stars of the play were Pablo and me. B. My dad gave me his old watch. C. Nan invited my sister and I to her party. D. Ask me no more questions, please

**Math**

The answer is A. 7.5 inches

**physics**

A 10.7 g mass is attached to a horizontal spring with a spring constant of 12.6 N/m and released from rest with an amplitude of 37.8 cm. What is the speed of the mass when it is halfway to the equilibrium position if the surface is frictionless?

**precal**

She doesn't know the exact route to her friends house. She knows that the route is 3 blocks to the first turn, 2 blocks to the second turn and then 1 block further. She can walk east, west or north when she leaves school and the blocks are 1/8 mile long. What is the ...

**lang art**

Osama bin laden? are you really serious? People these days are just RETARDED!

**Math**

13/3

**algebra/precal**

If a minute hand traveled at an average of 1 mph at the tip... how long in get would the minute hand have to be?

**maths**

6m is equal to 600cm divided by 20 cm= 30 boxes

**algebra**

wow your a genius! yeah I have no idea either... one more question :) how would you solve backwards to find length of the minute hand if the average speed was 1 mph?

**algebra**

A clock has a minute hand that is 14 feet long and an hour hand that is 9 feet long. What is the average speed (in mph) of the tip of the minute hand no idea how to solve this... please help :)

**chemistry**

Total Pressure= PressureA + PressureB..... when you add .150 mol you have to find pressure using PV=nrT sooooo.... P(7.30)=(.150)(.08206)(318) for P=.536 where n is moles, r is a constant and T is in kelvin... now add up all the Pressures Ptotal= .410+.620+.536= 1.566

**Ap US History**

Why would former slaves and Radical Republicans describe the state of affairs following the Compromise of 1877 as “worse than slavery”? Support, refute, or modify this claim using historical evidence. i just need help starting this paper and i also don't know ...

**APUSH**

Hi this is my essay prompt for APUSH. I am a little confused about this prompt. I don't really know where to start. Also I'm not sure what my 3 body paragraphs should be about. If you could help me with this it would be great. Thank you Sydney Why would former slaves ...

**Math**

20 + 25 = m

**physics**

A 2kg rock is thrown downward from a height of 3 meters with an initial velocity of 4 m/s. Just before it hits the ground its speed is _____.

**Chemistry: gas law**

Can you give me the answer so I can try and work backwards. I'm really lost. you don't need to show the steps now that i have the process, I'll get there i just want to know if i get the answer right

**Chemistry: gas law**

@Steve Moles of CO2 and H? once I find the moles do I use PV=nRT --> V=nRT/P?

**Chemistry: gas law**

I'm here at a study group with Aaron and while he's stuck on that question, I'm stuck on this one... I think we're gonna take a break but I'd love if someone could help break this down for me. Carbon monoxide, CO, and hydrogen, H , react according to the ...

**AP US History**

Hey mrs sue this link is not working

**AP US History**

Adams was an accomplished patriot who was instrumental in establishing the United States and its government. However, many people believed that the Adams administration was a setback, and that his presidency did more harm than good to the new nation. Was this an accurate ...

**Math**

Aba +bab ______ Ccc All posible values for a b and c

**ap history**

I got E again is that correct

**ap history**

36. Which of the following statements about Virginia is correct? [a The indentured servants’ chances of upward social mobility improved in the second half of the 1600s. [B] By 1640 the great majority of its plantation laborers were African slaves. [C] It was dominated by ...

**AP History**

I got C is that correct

**AP History**

Which of the following statements about the slave trade that developed from the fifteenth century onward is correct? AThose sold into slavery by African kings were primarily undesirables such as lawbreakers or persons accused of witchcraft. [B] Slavery already existed in West ...

**science**

I had objects that I had to find the source energy then what it was converted to. Please check my answers: battery Powered Drill chemical--> mechanical and thermal Lava Lamp Electrical--> thermal and nuclear

**reading**

No because intention is the base word. So there is no prefix.

**Science Energy**

My assignment was to give drawn examples of the 7 forms of energy. I am having trouble with Chemical and Nuclear. My science teacher used a plant as an example for chemical energy but I don't know what she meant. Also I can't think of an example for nuclear. Would a ...

**Math (Ratios)**

Ok thanks,

**Math (Ratios)**

Ok, I already know how to work ratios, but I'm confused on this question: Jessica had 3 pairs of tennis shoes and 3 pairs of sandals, What is the ratio of tennis shoes to sandals Jessica owned? Pair means 2 right? So would it mean 6 tennis shoes to 6 sandals? Or 3 tennis ...

**chemistry**

Will you please help me write this equation in net ionic form. I2(s)+Na2S2O3(aq)-->Na2S2O4(aq) +NaI(aq)