Tuesday

July 22, 2014

July 22, 2014

Total # Posts: 2,298

**Chemistry **

if i place C6H14 and KI in a test tube, then some metal salt (MNO3) is added... If the M+ reacts with and oxidizes the I, What color is c6h14? I think its purple.. but im not sure why it would be that color .. :S .. care to explain please ? and if it doesnt react .. what color...

**Physics**

A boy in a car moving at 10 km/h [N] wants to throw a ball to a girl standing on the right-hand side of the road. He is able to throw the ball at 20 km/h. He wants the ball to go straight east, directly to her. a) Relative to the car which way should he throw in order to do th...

**Math**

Well, for the first I was trying to use V(t)=g(t)+v(0), but I can't figure out of v(t) would be zero because it hit the ground or if I need to figure it out some other way. The second one I think is probably the same as figuring out what velocity it is when you drop it fro...

**Math**

I have a few basic physics problems. How do you calculate how long it will take for an object to hit the ground when it is dropped from a certain height? Specifically from 128 ft. Additionally how would you calculate how much velocity is needed to launch at item to a certain h...

**English**

I am the WORST writer. English is my weakness. I just wrote this literary analysis. I would go to the writing center at my school, but the paper is due tomorrow and it doesn't open until after my class. I would appreciate it SO much is someone could just quickly scan this ...

**English **

Is #3 learned

**English **

Have a question on Simple Verb Tenses. Need to reswrite each sentence, using the correct form of the verb in parentheses with s,ed,or will.. Thank for looking and helping me~~ 1. Long ago Plutarch___ stories of Greeks and Romans. (RELATE) Answer=related 2. Today we___a person&...

**Science**

Didn't help

**Science**

How do you separate a mixture of salt,pepper, and iron filings

**Chemistry**

I'm not quite sure what i'm doing wrong here: The Ksp for Ga(OH)3 = 7.28 X 10-36. What is the molar solubility of Ga(OH)3 in a 3.80M solution of gallium sulfate?

**chemistry**

If I use 0.524g of Mg to react with 60.0mL of 1.0M H+. The density of H+ is 1.00 g/mL, and the specific heat capacity equals what water's is. The Final and Initial temp. are 65.8 and 22. Mg(s) + 2H+(aq) ----> Mg2+(aq) + H2(g) so to find the deltaH of this reaction .. i ...

**Literature**

Is the old man in "A Very Old Man with Enormous Wings" a flat or a round character? I can't decide. He has some traits but I don't know if they justify a round character.

**math**

what is the value of the digit in the tens place 805

**math**

the foyer was 8 feet by 8 feet, but the tiles were 4 square feet. how many tiles will they need to fill the space?

**History Question**

That's really your own opinion. What I would do is research some important amendments. I like the 1st - freedom of speech.

**English**

Another quick question... "A Very Old Man with Enormous Wings" seems to be told in a third-person omniscient narrative, because we know the thoughts and feelings of all of the characters, with the EXCEPTION of the old man...is this still considered omniscient or is i...

**English**

I'll do that. Thanks! :)

**English**

I'm having trouble writing an introduction to this literary analysis. It's for "A Very Old Man with Enormous Wings". I'm supposed to show how the elements point of view, character, setting, tone and style, and symbolism convey the authors themes or centra...

**chemistry**

Barium sulfate is listed as insoluble on solubility tables. It does, however, dissolve to a small extent. Its solubility at 50 'C is 0.00034g in 100. g of water. Express this solubility in parts per million -I know the equation is ppm= (grams of solute/L of solution) x 10^6

**chemistry**

Fe3+ is added to excess Ag+ prior to titration with KSCN. When all the excess Ag+ has reacted, the red complex of Fe(SCN)2+ forms. This red complex is visible when the [SCN-] is about 2x10^-4M. at this pt. >99% (but not all) of the Ag+ has precipitated. Calc. the Ag+ when t...

**chemistry**

You add thiocynanate ions to a solution The molarity of silver ion is 0.1M initially. Calculate the max concentration of SCN- ion that exists in the solution before AgSCN beings to precipitate? ?

**Chemistry**

Are binary compounds ionic or covalent? If they are covalent, I thought they don't form bonds that way, since they share electrons.

**Chemistry**

Are binary compounds ionic or covalent? If they are covalent? If they are covalent, I thought they don't form bonds that way, since they share electrons.

**physics**

A tire placed on a balancing machine in a service station starts from rest and turns through 10.8 revolutions in 8.48 s before reaching its final angular speed. Calculate its angular acceleration.

**chemistry**

addition of a strong acid would increase the solubility of which of the following salts AgCl CaSO4 CdS CaCO3 PbBr2 CaHPO4 Cd(OH)2 AuCl

**Physics**

The density of a 4.41-m long rod can be described by the linear density function λ(x) = 111 g/m + 12.3x g/m2. One end of the rod is positioned at x = 0 and the other at x = 4.41 m. found total mass of rod to be: 609 grams need help finding : the center-of-mass coordinate....

**Physics**

The density of a 4.41-m long rod can be described by the linear density function λ(x) = 111 g/m + 12.3x g/m2. One end of the rod is positioned at x = 0 and the other at x = 4.41 m. found total mass of rod to be: 609 grams need help finding : the center-of-mass coordinate....

**Chemistry**

Thanks! So do all polyatomic ions have a coordinate bond?

**Chemistry**

How do you know when to use a coordinate bond with molecular compounds?

**math**

Determine whether the graph of each function is symmetric with respect to the origin. F(X)=-12/x

**physics**

A book weighing 29 N is placed on a table. if the support force back on the book from the table is 29 N, what is the net force?

**Chemistry**

Please help me understand!..If you have 100.0mL of a 30.0% aqueous solution of ethanol, what volume of water is in the solution?

**6th grade math**

1,650

**Physics**

A driver entering the outskirts of a city takes her foot off the accelerator so that her car slows down from 90 km/h to 50 km/h in 10 s. Find the car's average acceleration.

**Physics**

For a physics lab involving watchnig a gldier move down an air track with uniform acceleration, and recording the results in a table then graphing the results,do I include that "Observations were held and results were recorded in a table. Two graphs, one position-time and...

**Chemistry**

which of the following has the largest radius A. CI- B. S2- C. K+ D. Ar E. Ca2+

**math**

how many animals die from deforestation in costa rica each year?

**chemistry**

in a exothermic reaction ________ energy is converted to ________ energy. A. potential, kenetic B. kinetic, potential C. thermal, potential D. heat, thermal

**Chemistry**

if a 100g sample of water at 60.0 C is added to a 100.0 g sample of water at 10.0 C, determine the final temperature of the water. Assume no heat is lost to the surroundings

**chemistry**

what is the specific heat of silver if it takes 0.300 joules of enegry to raise 0.500 grams of silver from 25.0 C to 27.5 C?

**chemisty**

A 5.10-g sample of iron is heated from 36.0 C to 75.0 C. The amount of energy required is 89.5 J. the specific heat capacity of the sample of iron is?

**literary**

Are there any literary elements in the first part of Nineteen Minutes by Jodi Picoult??

**math 5TH GRADE**

Marie measured angle KLM .what mistake did she make?

**Math**

A basketball team scored 48 baskets in 1 game. Each basket was worth one or two points. If the team scored 84 points, how many one- point and two-point baskets did it score?

**science**

what is the process of fotosinthesis

**Statistics**

I didn't realize how simple that was x) thanks so much!

**Statistics**

To determine whether themean nicotine content of a brand of cigarettes is greater than the advertised value of 1.4 milligrams, a health advocacy program tests: Ho: mu = 1.4 Ha: mu > 1.4 The calculated value of the test statistic is z = 2.42. ==> How do I calculate the p-...

**ITE**

What is the defenition for research?

**Yr 10 PE**

Btw 'Teacher' do you happen to know anyone named Mackenzie Farmer in year 10? Because she told me about this website and that it was alright to use. And what have I done wrong, I wrote out exacly what was on the sheet, just in a simpiler form?

**Yr 10 PE**

999babe999- its a different Emily than the one that asked the question.

**Yr 10 PE**

Jeeze it sounds just like the assignment I got the other day. Pick either one of the road saftey ads and do the following: 1. Write what the purpose of the road saftey ad. 2. Write down how it is effective. 3. Say why funding should or should not be cut by the Government based...

**Yr 10 PE**

I don't seem to understand this question can you please paraphrase this. Task Outline: Outline the purpose of ONE health promotion initiative related to road safety, assess the effectiveness of this initiative and justify funding for road safety initiatives. Task Descripti...

**Physics**

Is the trend for ionic radius just that for metals, they are smaller than the nuetral atom and for non-metals, and for non-metals, they are bigger than the neutral atom? Or is there another specific trend?

**North & Central America**

What ensures Canada's cold climate?

**Science**

Thanks Ms. Sue

**Science**

Is it A .. other forcs keep building up the land?

**Science**

For million of years, wind and rain have worn down the earth. The land is not totally level now because ____. a. other forces keep building up the land b. wind and rain cannot erode solid rock c. for most of those years, wind and rain were scarce d. wind and rain pile dirt int...

**Physics**

A block is released from rest at the top of an incline which makes a 30 degree angle with the horizontal. The incline is 12 m long and it takes the block 25 seconds to reach the bottom. What is the coefficient of kinetic friction, between the block and the incline?

**Chemistry**

The mass of the solution will change as a result of the newly added substance. Because of colligative properties, anytime something is added to solution, the freezing point is lowered and the boiling point is raised. Water does not conduct electricity on its own, and since CH3...

**Math**

Regina worked in the garden, she spent 1/4 hour planting beans, 3 3/4 minutes staking tomato plants, and 1/2 hour training the cucumber vines. How much time did she spend gardening? Explain your answer.

**calculus**

find the derivative of 3/ln(3z)

**Yr 10 English URGENT**

My last name starts with a B......

**Yr 10 English URGENT**

HEY SHIVI! I made it up on the day. I made something up about a boat about 2 sink and I was about to die. Nice story though. What did u get for it?

**Chemistry**

What's the relationship between ionization energy and electron affinity? I ionization eneergy deals with losing electrons and electron affinity deals with gaining electrons, but I don't know how to explain the relationship.

**Chemistry**

Explain which atom of the following pair have the smaller ionization energy: As, I

**Physics**

A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.93 V and a current of 2.7 A are induced in the coil. The wire is the re-formed into a single-turn square coil, which is used in the same m...

**Physics**

Yes, that's the question, but I'm confused as to how I should find the length.

**Physics**

A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.93 V and a current of 2.7 A are induced in the coil. The wire is the re-formed into a single-turn square coil, which is used in the same m...

**bookkeeping**

just because someone ask for advice/a little help on an answer doesnt mean she/he is cheating

**Calculus**

find derivative of w(x)= (23e^x)/4^x

**Calculus**

f(t)=-4.9t^2+25t+3 meters what is the average velocity during the first two seconds? find the instantaneous velocity at t=2

**Physics**

A duck on a pond paddles 20 m [36Ëš N of E] and then paddles another 60 m[25ËšE of S]. Determine the duckâ€™s total displacement.

**Calculus**

find dz/dx when z= (ln 5)e^x

**Social Studies**

It is but I read through the section twice and I couldn't find anything that helped.

**Social Studies**

How was the culture of the Ottoman rulers similar and different from the cultures of the people they ruled in Southwest Asia? Plase help me with this question its confusing me so much!

**Physics - Please Help**

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is the original speed o...

**pre-algebra**

If I have Y=-3X+21 do i simplify or keep it just the same???

**pre-algebra**

If I have Y=-3X+21 do i simplify or keep it just the same???

**Physics - Please Help**

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is the original speed o...

**Physics**

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is the original speed o...

**Chemistry**

Calculate the amount of Citric acid monohydrate needed to make 100 mL of 0.1 M solution

**physics**

a worker drives a .551 kg spike into a rail tie with a 2.55 kg sledgehammer. The hammer hits the spke with a speed of 62.1 m/s. if one fourth of the hammers kinetic energy is converted to the internal energy of the hammer and soike, how much does the total internal energy incr...

**chemistry**

How many photons of light are emitted when the electrons in 10 hydrogen atoms drop from energy level 5 to 3?

**SraJMcGin**

Thanks so much SraJMcGin for all those notes, even my teacher didnt provide us with such good notes like you did:) Thanks so much:)<3<3<3<3<3<3<3 Where do I check the related questions?

**SraJMcGin**

SraJMcGin. I have a few questions; a few things that I don't really get.. I have trouble remembering the endings of the er, ir, and re verbs. Regular verbs mean that they don't have to be changed(they stay in the same form), its just their endings that change, the irre...

**physics**

One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching this first snowball, you throw a second snowball at a low angle and time it to arrive at the same time as the first. The acceleration of gravity is 9.8 m/...

**French**

use 2 verbs together with the second in the infinite form. I dont get this...what to do?

**French**

Ask a question using Qui, Qui a la, Quelle, Quand, etc. 1.Quand tu vas a la cafe? 2.Qui vas aller a lècole? 3.Quelle heure est-il? Have I got all of them?

**French**

Use different adjectives correctly and demonstrate understanding of gender and number changes -2 BANGS examples/2 Non-Bangs examples. B-Beauty(Belle, Beau) A-Age(Jeune, Vieux) N-Number(Nouveau, Nouvelle) G-Gender(Bon, Mauvais) S-Size(Petit, Grande) Im not really sure of what t...

**French**

Wow thanks Grace so much:)

**French**

Difference between indefinite and definite articles? Indefinite = Un, Une, Des Defenite = La, Le, Les The indefinite articles means A or A(n) and Des means some. Le, and La mean the, and Les is the plural form of these two. Give example of each: 1.Je vais manger des fromage.(D...

**Statistics**

Juan makes a measurement in a chemistry laboratory and records the result in his lab report. The standard deviation of students' lab measurements is 10 milligrams. Juan repeats the measurement 3 times and records the mean (x-bar) of his 3 measurements. a) What is the stand...

**math**

ragan takes an hour to plant 2 vines between each of the 6 posts in the first row of his vineyard how long will it take to plant two vines between each of the 9 posts in the longer second row hint 10 vines take one hour

**math**

i have 3 kg 4 kg and 5 kg on one side and 5 kg and 7 kg on the other side which two tiles do i swap to have the same amount on both sides

**math**

i have 3 kg 4 kg and 5 kg on one side and 5 kg and 7 kg on the other side which two tiles do i swap to have the same amount on both sides

**math**

how do you add 3 1/2 + 1 3/4

**Physics**

The air speed indicator of a plane that took off from Detroit reads 373 km/h and the compass indicates that it is heading due east to Boston. A steady wind is blowing due north at 42.3 km/h. Calculate the speed of the plane with reference to the ground. If the pilot wishes to ...

**Physics**

For a science fair competition, a group of High School students built a kicker-machine that can launch a golf ball from the origin with a velocity of 12.3 m/s and initial angle of 29.9° with respect to the horizontal. *Where will the golf ball fall back to the ground? *How...

**Physics**

A golf ball is hit with an initial angle of 54.7o with respect to the horizontal and an initial velocity of 85.1 mph. It lands a distance of 104.3 m away from where it was hit. By how much did the effects of wind resistance, spin, and so forth reduce the range of the golf ball...

**math**

hey, this is my first time using this site so I'm not sure what I'm doing exactly! So i need a REALLY simple way how to convert fractions into a percent! i be confused!! :(

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