Tuesday

July 29, 2014

July 29, 2014

Total # Posts: 1,694

**chemistry**

HCl + Mg2 ---> H2 + MgCl2 4HCl + Mg2 = 2H2 + 2MgCl2 4mol 2mol 2.31gr ?gr HCl mole = 2.31/(1.008+35.45)=0.06 mol 4HCl/1H2 0.06mol HCl x (1molH2/4molHCl)= 0.015mol H2 mass of H2 = 0.015 x (2*1.0008) =0.03gram H2 i think that's how it works.. plz check your answer

**SOCIAL STUDIES/ GOVERNMENT**

Please be specific.

**Chemistry**

reaction balanced equation. Al2C3 + O2 ----> CO2 + Al3 therefore 3Al2C3 + 9O2 = 9CO2 + 2Al3 so try to find the mass of CO2 from the equation, then n= m/M

**chemistry**

CO + 2H2 = CH3OH 2mol 1mol ?gr 45gr 45 x 2 = 90 grams hope i got it right for you

**Math**

seem right to me.

**Numerical & Proportional Reasoning**

first: $300US = 300x0.821774= 246.53euro. she spent 100euro, so she had 146.53 euro left going to Japan. then you can change 146.53 euro back to US dollar. 146.53 euro = (146.53/0.821774)=178.31US dollar then change US dollar to Yen, therefore 173.31 US= 173.31 x (110.565)= 19...

**algebraic reasoning**

have your grap on the y-axis represents the height, and the x-axis represents the time. when she goes down, draw a line going down according to the time and the elevation, and the line will go up when she goes up with the time given. for the total time will be 5min down, 5 min...

**Algebra**

-8x + 4y = -12 +8x +8x --- ---- 0 +4y = -12 + 8x divide both sides by 4 (4y)/4 = (-12)/4 +(8x)/4 y = -3 + 2x or y= 2x -3 good luck

**math**

y=mx + 2 means 2 is the y-intercept when x=0, m is the slope, if m>0, the line will go up to the right, (/) if m<0, the line will go down to the right(\) good luck

**Math**

porabola..i think

**Math**

why a (-)x(-)=(+) (-)x(+)= (-)

**physics**

I know that I should find an equation, but which one?

**physics**

A Goodyear blimp typically contains 5400m^3 of helium (He) at an absolute pressure of 1.1*10^5Pa. The temperature of the helium is 280K. What is the mass (in kg)of the helium in the blimp? PLEASE GIVE ME SOME IDEAS TO DO IT!!!THANKS A LOT!!!

**Chemistry**

Can someone help me balance this equation ZnCl2 + (NH4)2S ------- NH4Cl + ZnS

**Math**

1. Explain the advantages and disadvantages of both the substitution method and the elimination method for solving a system. Help please. The only reasons I can think of is because in substitution it might be more difficult cause there's a possibility of working with fract...

**Geometry**

geometric concept is modeled by the beam of a flashlight

**Harding**

Why was harding's administration so scandal ridden? Consider both Harding's personal qualities and the postwar climate. What was the long-term impact on his reputation, the republican party, and American national interests.

**us history**

the explosion of the USS Maine was the main cause for this sentiment. Yellow journalists took the explosion (which was caused by a fire on board) and blamed the spanish.

**Prohibition**

what are some specific consequences of prohibition

**Pre Algebra**

every bay

**chemistry**

a radioactive fission product of nuclear explosions and sccidents is often iodine 131 which becomes distributed in the atmosphere. this falls upon the ground and is absorbed by plants. explain how this radiation could eventually beome concentrated in the human body and cause g...

**chemistry**

im sorry.. i dont even know how to ask. maybe if i knew what i was doing i could ask. but we did a lab about halide ions. we used NaF, CaCl, NaBr, and NaI. we used reagents Ca(NO3)2, AgNO3, NH3(aq), Na2S2O3, and starch + NaOCl. we had to tell if a precipitate formed and the co...

**chemistry**

how do you know which halide salts confirms a presence of F- ions, Cl- ions, Br- ions, and I- ions?

**Algebra 2**

Approximate to the nearest tenth the positive real zeroes of f(x)=x^2+1. I got .6 Solve over the set of complex numbers. x^4-13x^2+36=0 i got -3,-2,2,3 but i don't know if i even did it right. Solve x^2+4x9=0 by completing the square. I don't even know where to begin o...

**Math**

is 3/2 a rational number?

**geography**

What is some Italian cultures?

**chem**

a radioactive fission product of nuclear explosions and sccidents is often iodine 131 which becomes distributed in the atmosphere. this falls upon the ground and is absorbed by plants. explain how this radiation could eventually beome concentrated in the human body and cause g...

**chem**

how do you know which halide salts confirms a presence of F- ions, Cl- ions, Br- ions, and I- ions?

**chemistry lab**

Could someone help me with this? i am tired of it. here is my data from lab: Buffer1: HPO4- weight 3.412g; original pH Buffer 2: HEPES wt: 1.090g original pH 10.08 buffer1: pH of 0.1M: 7.5; pH of 0.01: 7.72; pH of 0.001M: 7.87 buffer2: PH of 0.1M: 7.5 ph of 0.01 M: 7.42 pH of ...

**Social Studies**

Name the documents from which the Framers of the Constitution used ideas.

**AP US History**

I have and essay on why muckrakers were better than roosevelt thought. i have examples of muckrakers. i just need to find out what legislation or action their works promoted. Here is the list of muckrakers... Lincoln Steffens Ida Tarbell Ray Bakers John Spargo Samuel Hopkins A...

**AP US History**

I was thinking New Nationalism as well. This is not a DBQ. It is just a regular essay so my sources are my book and the internet. My book has a paragraph on each one. I have used that to compare and contrast the two but i am having trouble applying the information to the quest...

**AP US History**

Between New Nationlism and New Freedom which is the most realistic response to industrialization? Why?

**AP US History Essay**

Do you think that Teddy Roosevelt's claim that Taft had abandoned his policies was entirely fair? Why or why not? I know it is an opinion question but i need help finding info. Thanks

**Immigration**

Where did French immigrants to america go in the late 1800s

**biology: the study of life**

lmfao, i was looking for the same thinggg, i have the same bio book as you,, it sucks doesnt it?

**grammar**

Can someone please check my work. The teacher said there were 4 sentences with more than 1 adverb, but I can only find 3. Thank you. Identify each adverb and tell the word it modifies. 1. The nation of Brazil actually covers almost half of the continent of South America. actua...

**Immigration**

Why would a French person immigrate in the late nineteenth century?

**Food and Nutrition**

Hi, can you possibly tell me if there is anything that I can make that is kinda like a gingerbread house? My teacher wants me to make a food or dessert.. but you have to build it or something? srry if confusing.

**SCIENCE NEED BY TOMORROW PLEASE!!!!!!!!!!!!!!!!!!!**

newton.dep.anl.gov/askasci/phy99/phy99321 go to this site it is a dot htm

**US History**

Do you think that the Roosevelt Corollary to the Monroe Doctrine fundamentally altered the nature of the doctrine and the intentions of its origianl authors (Monroe and JQ Adams)? If so explain how. If not, explain how the doctrine and the corollary are comparable. Here is my ...

**algebra 2**

Take the (u+5)^2 and solve (u+5)(u+5) that gives you -6(u^2-10u-25)=120 then distribute the -6 -6u^2-60u-150= 120 then subtract 120 from both sides -6u^2-60u-270=0 then divide everythin by -6 giving you u^2+10u+45=0 then use the quadratic formula (-b +/- squareroot b^2 -4ac)/2...

**algebra 2**

-5 + or - 4i squareroot 5

**math**

a square root i believe

**US History**

Where can i find info on the Portsmouth conference?

**question please help**

I've tried to answer this question, but I don't know if its right. Identify cultural influences on foods eaten in the province of P.E.I. Potatoes raised in PEI show the influence of the Irish who settled in the region. ..thats all I got but I need more info on it. plea...

**US History**

Do you think that the Roosevelt Corollary to the Monroe Doctrine fundamentally altered the nature of the doctrine and the intentions of its origianl authors (Monroe and JQ Adams)? If so explain how. If not, explain how the doctrine and the corollary are comparable.

**US History**

Why is it not true that the US remained isolated from world events in the late nineteenth century? Describe some specific instances of American involvement beyond its own shores between 1865 and 1900. I have two examples but i need a third. Immigration and the Open Door notes....

**Science- weather**

1. Two clouds are about the same size. One appears light in colour and the other appears dark because it blocks more sunlight. Which would be a better heat sink? Why? --- ..would the darker one be a better heat sink?; because it gets heat more.

**Chemistry**

Does it take longer to make macaroni and cheese in Denver or in Poquoson(a small town just below sea level)? Explain your reasoning. I said Denver, because of the higher atomspheric presure. Is this right?

**Imaginary numbers**

1/i^20 + 1/i^21 I got 1-i but i am not sure if that is right.

**chem!**

How does the crystallization process occur??

**Algebra 2**

Ask your teacher if there is anything you can do for extra credit. Explain that you really want to pass. If you show that you truly care about the class then your teacher won't give up on you. Unless there is more to your story, for example missed assignments. You have to ...

**chem**

what are the crystalline shapes of sucrose, sodium thiocyanate, and aluminum pottasium dulfate dodecahydrate??

**Mob Psychology**

Can anyone give me an example of the use of mob psychology in history? Thanks.

**Julius Caesar**

I mean the play Julius Caesar

**Julius Caesar**

How can Julius Caesar be applied to our current way of life?

**US History**

What were the three most signigicant consequences of the industrialization of the American economy after the Civil War? Explain your choices. I am having trouble coming up with three consequences. I need some ideas. Thanks

**Chemistry**

I need help balancing this equation. NaOH + HSO4 ====== Na2SO4 + H20

**Literature**

If this ve error and upon me proved, I never writ, nor no man ever loved. These lines are example of a/an A. quatrain B. octet. C. couplet D. sestet

**Chemistry**

Where can I find the Chemical names of the ingredients of certain household substances like Red Devil Lye or Cascade? I have already looked on packaging and stuff but some of it is not listed.

**science**

how are faults classfied

**Memorization**

How can i quickly memorize a passage from Julias Caesar? I have to speak it in front of class.

**word problems**

how do you solve these using polynomial equations??? the altitude of a triangle is 5m less than half its base. if the area of the triangle is 300m, find the measure of the base. the sum of the squares of two consecutive negative integers is 61. find the smaller of the two inte...

**science**

Beside people, what is the only animal that develops colon cancer on its own?

**Algebra**

There are 850 Douglas fir and ponderosa pine trees The company paid an average of $300 for each ponderosa pine. If the company paid $217, 500 for the trees, how many of each kind did the company buy?

**Algebra**

6x is this right

**Algebra**

2(x-3)-3(x+5)=3(x-2)-7

**math**

i cant divide big numbers

**math**

2323.15\12.5=?

**math**

how do you divied?

**US History**

Explain the economic, military, and diplomatic results of the Union victory and the Confederate defeat in the Civil war. Thanks.

**Biology**

Have you tried this at all? If you have show me your answer and i will tell you if it is correct.

**AP US History Essay**

Explain why Britain finally decided against intervention on behalf of the Confederacy. In what ways was Britain helpful to the South anyway? I got the first part of the essay question, but i am having difficulty with the second. Any help would be appreciated.

**math**

What list?

**Social Studies**

The newest at Busch Gardens (Europe) is Ireland. If you are talking about Busch Gardens Africa, i have no idea.

**AP World History**

Islam's basic creed (shahadah) written on a plaque in the Great Mosque of (Xi'an.) See this picture on wikipedia. I hope this works for you

**LITERATURE**

I would say personification.

**trig**

solve this equation: 4x^3-4x^2+13x-6=0 note: that's suppose to be 4x to the third and 4x squared

**math**

Maria's yard is 40ft x 28ft 9in. She made a scale drawing of her yard that is 16in x 11.5in. what is the scale.

**Clarinet**

Does anybody know where i can find a pdf of the clarinet chromatic scale?

**English**

king's rights, i think

**AP US History**

I have three essays and I have to pick two of them. Which two seem easiest? 1. Do you think that by the end of 1854 the two sections had reached an impasse and that the Civil War was inevitable sooner or later? Why or Why not? 2. Assess the extent to which each of these indivi...

**language arts**

I believe that it is a sentence that clarifies the meaning of the word. But you could probably look it up on google or something.

**french**

Just write the sentences in passe compose.

**biology (true or false) cells**

True or false. A cell whose membrane potential is zero is in an ISOTONIC environment

** math mesurment**

i don't know the answer. sorry

**Word Scramble**

The letters are B A T E R Y. I have been trying to unscramble them all day.

**Brainstorming**

its an online group.

**Brainstorming**

In my school group one of the things we need to come up with is a code of conduct/expectant behaviors along with team rules. Other then respecting eachother and if we disagree to something let us know right away what else can we put down? Website, ideas, anything would be helpful

**Algebra-Parbola**

Factor each one out... 2y-4 = 6x-6 2x+2 = 6y-6

**Chemistry**

K=1.6x10^-5 mol/L for the following reaction 2NOCl(g).... 2 NO(g) + Cl2(g) Calculate the concentrations of all species at equilibrium for each of the following original mixtures E) 2.4 mol of NOCl, 2.4 mol of NO, and 1.2 mol Cl2 in a 1.0 L flask F)1.9 mol/L concentration of al...

**Algebra 2**

Factor Completly: 3y^2+7y-20 I got (5y+12)(y-1)

**chemistry plz help!!!**

are the following true for the element gallium? if they are false make them true. oxide more basic than Al203 oxide less basic than Mg(OH)2 hydroxide soluble in acid hydroxide soluble in base sulfide precipitates with H2S sulfide not soluble in (NH4)2S will form EaCl3, Ea2S3, ...

**chemistry**

are the following true for the element gallium? if they are false make them true. oxide more basic than Al203 oxide less basic than Mg(OH)2 hydroxide soluble in acid hydroxide soluble in base sulfide precipitates with H2S sulfide not soluble in (NH4)2S will form EaCl3, Ea2S3, ...

**Excel**

Yeah but I can't figure out how to do that, how do I do an IF function within the calculation?

**Excel**

I have an assignment where I have to create a birthday list. One of the tasks is to add a countdown til someone's birthday, I have the formula as: =DAYS360($D$200,I3) However how do I calculate it so if some's birthday past I can recalculate it so it is not negative. L...

**Another American History essay question**

How did the Second Great Awakening and industrialization encourage social reform

**American History Essays**

Compare and contrast the Irish and German immigrants of early-nineteenth-century America in terms of their motives for leaving Europe, patter, of settlement in the US, impact on American life, and reception by native-born Americans. I know what I need to answer the question I ...

**American History**

They viewed slaves as property and the slaves' uprising as a threat to their rights. The slave rebellions only strengthened anti-abolitionist laws and caused slaves to be more easily mistreated.

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