Wednesday

January 18, 2017
Total # Posts: 1,636

**4th grade**

what is 27×19 in expanded algorithm?

*December 13, 2010*

**chemistry Molarity**

529.5

*December 11, 2010*

**4th grade**

do u know how to bulid the alamo ?well me nither so lets find out

*December 9, 2010*

**math**

To fond what is the same in the 8 and the 9's

*December 9, 2010*

**algebra**

whta is the rule? m 2 4 6 8 n 18 16 14 12

*December 8, 2010*

**discrete math**

Let A= {for all m that's an element of the integers | m=3k+7 for some k that's an element of positive integers}. Prove that A is countably infiite. Note: you must define a function from Z+ to A, and then prove that the function you definied is a bijection

*December 4, 2010*

**Discrete Math**

Let a, b, c, and d be integers, and let n be a positive integer. Prove that if a is congruent to c mod n and b is congruent to d mod n, then (a-b) is congruent to (c-d) mod n

*December 4, 2010*

**AP Chemistry**

Two solid objects, A and B, are placed in boiling water and allowed to come to temperature there. Each is then lifted out and placed in separate beakers containing 1000 g water at 10.0 degrees Celsius. Object A increases the water temperature by 3.50 degrees Celsius; B ...

*December 2, 2010*

**chemistry help!**

A sample of methane gas, CH4 was collected over water at 25 degrees celcius and 720 torr. The volume of the wet gas is 2.50L. What will be the volume of the dry methane at a standard pressure?

*December 1, 2010*

**Chemistry**

Two solid objects, A and B, are placed in boiling water and allowed to come to temperature there. Each is then lifted out and placed in separate beakers containing 1000 g water at 10.0 degrees Celsius. Object A increases the water temperature by 3.50 degrees Celsius; B ...

*December 1, 2010*

**chem homework**

a gas occupies a volume of 410mL at 27 degrees Celcius and 740mm Hg pressure. Calculate the volume the has would occupy at STP.

*November 30, 2010*

**science**

how do you write the chemical equation for liquid pentanol (C5H12O) and gaseous oxygen ? Thanks ~Samantha~

*November 29, 2010*

**6TH GRADE MATH**

what is the shape? and what is your question?

*November 29, 2010*

**Math**

^ same as bobpursley. my only guess would be 24 degrees - 7 degrees = x and then again i have no idea what you are wanting to know.

*November 29, 2010*

**chem**

what are 6 elemts that make up Yellow Gold? What are 6 elements that make up White Gold? What are 5 elements for platinum for gemstone settings? what are 2 elements that make up palladium for gemstone settings? what is 1 element that makes up a diamond? 3 elements that make up...

*November 29, 2010*

**chemistry**

What is the total number of valence electrons that must be shown in the Lewis structure for magnesium fluoride I think 16 but im not sure

*November 29, 2010*

**chemistry**

Most elements are stable with eight (8) valence electrons. True or False Elements react in order to gain, lose, or share electrons. True or False

*November 29, 2010*

**algebra 2**

Write (1.8x10^-12) (2.1x10^-3) in scientific notation

*November 27, 2010*

**physics**

An electric pump needs to be installed on a deep well to provide water. If the well is 30m deep and 50L of water must be pumped out per minute. How powerful a pump is needed ? (watts)

*November 23, 2010*

**Math**

Kelly has a 2.89 GPA after 54 credits. She is taking 16 credits this quarter. What must her GPA be this quarter to raise her ovarall GPA to 3.0

*November 22, 2010*

**college chemistry**

What is the entropy change for the vaporization of 2.6 mol H2O(§¤) at 100◦C and 1 atm? dH= 40700 J/mol Answer in units of J/K

*November 19, 2010*

**college**

I will like to know are these correct sentences. Their are three kids in the room. We have been married for 20 years, and are relationship is as strong as ever. I’m having trouble with my car. Can you give me some advise? The diplomats are doing what they can to restore ...

*November 18, 2010*

**college**

I will like to know is this pargraph is correct. Why are many students choosing to pursue their college degrees using their home computers. Benjamin Franklin said; A penny saved is a penny earned.” This principle applies to the american and foreign online student. Today ...

*November 18, 2010*

**college alg HELP!**

I know how to set it up but I cannot get the three solutions right. I solve by addition and what not but cann't ever get the right answer!

*November 18, 2010*

**college alg HELP!**

I cannot figure a way to do this problem: An investment of $98,000 was made by a business club. The investment was split into three parts and lasted for one year. The first part of the investment earned 8% interest, the second 6%, and third 9%. The total interest from the ...

*November 18, 2010*

**English title help!**

I need help thinking up a title for my paper!! My paper is about contrast between passionate, youthful love and mature, steady love it is about the book "O Pioneers!" by Willa Cather.. Cather implies that passionate love is dangerous and unstable and is unlikely to ...

*November 17, 2010*

**world history**

describe the role of education in athens and sparta

*November 16, 2010*

**math**

write a decimal number for each word name nine thousand,six hundred five and nine tenths

*November 15, 2010*

**math**

how would you write in a decimal:nine tousands,six hundred five and nine tenths

*November 15, 2010*

**Econnomics**

By what percentage did the price of a newspaper rise?

*November 11, 2010*

**social studies**

what are three methods to survey an area in archeological process?

*November 10, 2010*

**Psyc- Lifespan Development**

What are theoretical causes of behavior in adolescent self esteem?

*November 9, 2010*

**Psyc- Lifespan Development**

Slef esteem in Adolescents *What are theoretical causes of behavior- should include more than one theoretical explaination / discussion *relevance to overal development

*November 9, 2010*

**college algebra**

Use the theorem on bounds to establish the best integral bounds for the roots of the equation: w^(4)-8w^(3)+2w^(2)+10w-1=0

*November 8, 2010*

**English, PLEASE HELP ASAP**

Okay this is what I wrote, please let me know...-- This morning at work I look out to this Chicago city as gloomy and sad. Sad is how I would describe where I am at as of now, sad because I am the lowest I have ever felt. Work does not satisfy me compared to when I was out in ...

*November 8, 2010*

**English, PLEASE HELP ASAP**

BOOK "O PIONEERS!" On pages 68-69, Alexandra and Carl Lindstrum have a conversation where they compare the different paths their lives have taken. At the bottom of page 68, the paragraph begins with Carl saying--“Freedom so often means that one isn’t needed...

*November 8, 2010*

**12th grade**

small group that study bills

*November 5, 2010*

**Math**

I'm really struggling with how to set this up: A company has 18 members on its management team,10 men and 8 women. There is a conference in Hawaii, and the company decided to send 5 people. If the selection of five people is random, find the following probabilities. I got ...

*November 4, 2010*

**5th grade**

a parallegram has a height of 4 meters and sides of 5 meters and 7 meters. What is its area in square meters?

*November 3, 2010*

**math**

if there is a height of 4 meters and sides of 5 meters and 7 meters"what is the area of the square meters

*November 3, 2010*

**chemistry extra credit**

If you eat something very hot or spicy, and need to quickly "douse the burning sensation" in your mouth, water does not work as well as other possibilities. What is best for producing relief and why?

*November 3, 2010*

***chemistry**

What is the source of Dr. Seuss' Green Eggs and Ham? (Why do hard boiled eggs sometimes have green coated or tinged egg yolks?)

*November 3, 2010*

*****chemistry**

Why is vinegar recommended for cleaning coffee pots, steam irons, and kitchen and bathroom faucets with white deposits on them? Why does it work, and what is the chemical equation for how it works?

*November 3, 2010*

**calculus**

What is the formula for figuring out the Tangent of a "S" Curve?? R=3000?

*November 3, 2010*

*****chemistry**

The Morton Salt Compant instroduced a logo and slogan for advertising its salt in 1911. This is one of the oldest and most successful ad campaigns ever, but what does it mean and where and why did they come up with it? (describe the chemical basis for it)

*November 3, 2010*

**algebra HELP ASAP**

If $13,000 is deposited in a bank account paying 6% compounded quarterly, what amount will be in the account after 8 years? How much interest will be earned during the 8 years? The amount after 8 years will be $___ How much interest will be earned during the 8 years? _____

*November 2, 2010*

**college algebra HELP**

How long does it take for a deposit of $1400 to double at 10% compounded continuously?

*November 2, 2010*

**Chemistry**

If you have red solution, at what wavelengths should it absorb light, at what wavelengths should it NOT absorb light?

*November 1, 2010*

**Algebra**

To convert from centimeters to inches, multiply the number of centimeters by 2.5. True or False?

*November 1, 2010*

**college algebra HELP**

The population of a city was 166 thousand at the begining of 2004. The exponential growth rate was 1.5% per year. Use the formula P(t)=P[o]e^(kt) where P[o] is the population in 2004 and k is the exponential growth rate. a) predict the population in 2016, to the nearest ...

*November 1, 2010*

**algebra**

So does that mean that it is False?

*November 1, 2010*

**algebra**

$6 for two pounds is an example of unit rate. True or False?

*November 1, 2010*

**algebra 2**

A farmer wants to raise corn and soybean on a 2010 acre of crop land. Each acre of corn requires 2 hours of labor during growing season while each acre of soybean requires only 1 hour of labor. The total amount of hours of labor available during growing season is 340 hours. ...

*October 31, 2010*

**college algebra**

Use Descarte's rule of signs to discuss the possibilities for the roots of the equation. Do not solve the equation -5r^(4)+6r^(3)+9r-15=0

*October 27, 2010*

**college algebra**

Use the theorem on bounds to establish the best integral bounds for the roots of the equation w^(4)-8w^(3)+2w^(2)+10w-1=0

*October 27, 2010*

**college algebra**

Use the theorem on bounds to establish the best integral bounds for the roots of the equation w^(4)-8w^(3)+2w^(2)+10w-1=0

*October 27, 2010*

**3rd grade math**

explain how you can use the basic fACT FOR 9+6=15 TO SOLVE THE NEXT EQUATION

*October 26, 2010*

**College algebra**

Find the equation with x-intercepts (4,0),(-3,0) and (2,0) and y-intercept (0,12)

*October 26, 2010*

**Chemistry 106**

What are the elements used to make the ingrediants of each category (the same element may be listed in several categories, but a maximum of once in each of the 6 categories, no matter how many different ingrediants it may be in)? **name of the element with the symbol and ...

*October 26, 2010*

**Algebra 1**

x^2-6x(3-6x)

*October 26, 2010*

**math**

Find all real and Imaginary solutions 7x^(3)+70x^(2)-x-10=0

*October 26, 2010*

**physics**

A 15kg box is resting on a hill forming an angle of a horizontal surface. The coefficient of static friction for the box on the surface is 0.45. Calculate the maximum angle of the incline just before the box starts to move.

*October 22, 2010*

**Math**

find all real and imaginary solutions x^(2/3)-2=x^(1/3)

*October 21, 2010*

**Physics**

Vo=0km/h V1=89 km/h t0=0 t1=6.1 89-0/6.1-0=14.5 km/hr (Round to 2 sig figs=15 km/hr) You then have to convert km/hr to m/s^2. 15km/hr * 1000m/3600s= 4.1m/s^2 3600s = 1hr *hope that helps

*October 21, 2010*

**Physics**

The toy car in figure 6-12 runs off the edge of a table that is 1.225-m high. The car lands 0.400m from the base of the table a.How long did it take the car to fall? b.How fast was the car going on the table?

*October 21, 2010*

**5th grade math**

C 87, because 522/6 is about 540/6=90

*October 21, 2010*

**College Physics**

Conceptual Question: Many people believe that a vacuum created inside a vacuum cleaner causes particles of dirt to be drawn in. Actually, the dirt is pushed in. Explain.

*October 19, 2010*

**English**

What is an explanation when someone says: "The our crime's worse than a murderer's. His act puts him outside the law, but keeps the law intact. Ours would weaken the law." P.s. These men are forming a posse to hang a gang that killed one of their townsmen.

*October 19, 2010*

**Chemistry 106**

Calculate number of moles of aluminum in 1.50kg of Al

*October 18, 2010*

**chemistry**

Calculate the number of moles of CaCO3 in 3.20g of Calcium Carbonate.

*October 18, 2010*

**chemistry**

Calculate number of moles of aluminum in 1.50kg of Al

*October 18, 2010*

**college algebra**

Shondra wants to enclose a rectangular garnden with 240 yards of fencing. What dimensions for the garden will maximize its area?

*October 17, 2010*

**Physics**

Force due to tension = mg + ma The force that the load originally has in addition to the force due to acceleration.

*October 17, 2010*

**Physics**

3240 N

*October 17, 2010*

**College Physics**

would the answer be 19200?

*October 17, 2010*

**College Physics**

so i do 2.0x10^5Pa x (0.024m^2)(4)??

*October 17, 2010*

**College Physics**

The four tires of an automobile are inflated to a gauge pressure of 2.0x10^5 Pa. Each tire has an area of 0.024m^2 in contact with the ground. Determine the weight of the automobile.

*October 17, 2010*

**Math**

can you help me on this problem? -15-(-4)+(-1)

*October 17, 2010*

**chemistry**

What element has 20 protons and forms a +2 Cation?

*October 15, 2010*

**Chemistry**

you are given the equation S2O3 + 2H --> S + SO2 + H2O you mix 25 ml of HCl with a concentration of 2 mol/L with 5 mL of Na2S2O3 with a concentration of 0.3 mol/L. what is the concentration of S2O3 and H?

*October 14, 2010*

**Chemistry**

A 30 ounce iron bar at 425 degrees Fahrenheit is placed in 2.00 quarts of water at 80.0 degrees Fahrenheit. What will be the change in temperature of the iron bar in degrees Fahrenheit? (Assume 1/3 heat lost to the surroundings) Specific heat of iron= .473 Joules/grams degrees...

*October 14, 2010*

**Chemistry**

Congratulations! You have discovered a new element called Bhauzium (Bz). The average atomic mass of Bz was found to be 348.72 amu and its atomic number is 123. a) if the atomic masses of three isotopes of Bhsuzium are 342.92 amu, 356.43 amu (6.52%), and 351.29 amu, what is the...

*October 14, 2010*

**College Physics!**

Is there any way i can just get these problems set up? I just need help with the steps on how to do it. A box weighing 600 N is pushed along a horizontal floor at a constant velocity with a force of 250 N parallel to the floor. What is the coefficient of Kinetic friction ...

*October 13, 2010*

**Chemistry 106**

An unidentified metal forms an ionic compound with the carbonate anion. The metal forms a 2+ cation. If the minimum ration of the number of protons in the metal to the oxygen protons s 5:6, what is the metal?

*October 13, 2010*

**algebra I**

What is 3/4x-7=8+-6x

*October 11, 2010*

**3rd grade**

it's 40 and it is in the tens place

*October 10, 2010*

**chemistry**

A solution contains 4.46 g KCl in 178 mL of solution. The density of the KCl solution is 1.11 g/ml. What is the percent (m/m) for the potassium chloride solution?

*October 9, 2010*

**chemistry**

how many milliliters of 6.00 M HCl are required to react with 60.0 ml of 1.96 M Al(OH)3? Al(OH)3(s)+3HCl(aq)-->AlCl3(aq)+3H2)(aq)

*October 8, 2010*

**math**

in square ABCD, the measure, in inches of AB is 3x+2 and BC is x+12. What is the number of inches in the length of DC ?

*October 4, 2010*

**science**

Your shadow will be longer if you are standing on a beach in Miami at 3pm because the sun is starting to set which alows your shadow to be longer than you and it will continue to get longer until the sun has fully set and when it rises again in the east it will become long again

*October 3, 2010*

**calculus**

Prove that cos(sin inverse x) = square root ( 1-x^2)

*September 29, 2010*

**calculus**

Prove that cos(sin inverse x) = square root ( 1-x^2)

*September 29, 2010*

**Physics**

a girl jumps off a high diving platform with a horizontal velocity of 2.77m/s and lands in the water 1.2s later the acceleration of gravity is 9.8m/s squared how high is the platform and how far from the base of the platform does she land?

*September 28, 2010*

**11th grade**

1.25/X = 82/100 82X = 124 82X/82 + 124/82 = X = 1.5424 Check: 0.01524 * 82 = 1.24968 = 1.25

*September 26, 2010*

**1st grade**

I am second grade and i got 37,000. I hope it is right

*September 23, 2010*

**Math**

If light travels 10,000 km in 3.3 x 10-2 sec, how long will it take light to travel one meter.

*September 21, 2010*

**Math**

I think its like this... 3 to the second power is 3x3 which equals 9, but 3x2 equals 6 which is multiplication and has nothing to do with the powers and stuff. Its kinda weird at first but you will get used to doing it right.Another example is 3 to the 5th power. 3x3x3x3x3. ...

*September 21, 2010*

**english**

we are doing one about how to kill a mocking bird (the book was really good)

*September 21, 2010*

**english**

i am doing a book report and i havent done one since the 5th grade and now i am in 7th HELP!!!!!!!!!!!!!!!!!!!!!!!!!

*September 21, 2010*

**english**

that means if you do something good for someone later on you will rewarded

*September 21, 2010*