Tuesday

January 27, 2015

January 27, 2015

Total # Posts: 227

** Chemistry**

What is the chemical equation for AgNO3 + NaCI?
*February 27, 2012*

**Chemistry**

Calculate the density of a metal object that has a dull surface and an irregular shape. It has a mass of 321 grams and a volume of 45.2 cm 3.
*February 6, 2012*

**Science**

On the movie, Bill Nye the Science Guy, what was the seventh energy after thermal, elctrical, nuclear, sound, solar, and chemical?
*January 30, 2012*

**CPR**

Is there a website where you can find a video for the AHA 2012 CPR? AHA changed the CPR. -Thanks, Tia
*January 29, 2012*

**math**

Rodney and James are each 30 feet from a door. Rodney moved one foot closer and James moved half the distant between himself and the door. If each person continued to move in this fashion, who would be closer to the door after 10 moves? Who reaches the door first?
*December 5, 2011*

**Personal Finance Management**

budget money
*November 17, 2011*

**bio 151**

Describe where EPSP is produced, and explain how it is produced. What is its significance?
*June 3, 2011*

**Psy**

you see with your brain not with your eyes Defend this statement with reference to the Young-Helmholtz theory of color vision and the optic disc
*June 3, 2011*

**psychological statistics**

A random selection of files from a student counseling center revealed the following reasons why college students seek services: Mental health issues 25 Learning/school issues 15 Relationship issues 5 Other 5 What does it mean to say the files were randomly selected? How would ...
*May 25, 2011*

**Science**

An object is moving due east. You push the object. Work is being done at all times when you push...
*May 16, 2011*

**physics**

find the revolutions of a bicycle wheel of diameter 0.8m when the bike goes a distance of 25m down the street.
*May 15, 2011*

**Chemistry**

If 25 ml of bromine, a liquid element at room temperature, is added to 100ml of water, what would be the resulting molar concentration of bromine? Please Help me!!!
*April 28, 2011*

**Chemistry**

If 25 ml of bromine, a liquid element at room temperature, is added to 100ml of water, what would be the resulting molar concentration of bromine?
*April 28, 2011*

**Chemistry still don't understand the answer **

How many ml of a 2 M solution of HCL would be needed to neutralize 2 ml of a 5 M solution of KOH?
*April 28, 2011*

**Chemistry**

Can you determine the pH of a 1 liter solution having an H concentration of 1.0*10 to the negative 3.5
*April 28, 2011*

**Chemistry**

If the pOH of a solution is determined to be 5, what is the pH of the solution?
*April 28, 2011*

**Chemistry**

A solution is prepared by adding of KOH to 1 liter of water. The resulting solution has an [OH negative]of 1 * 10 negative 3. What would be the pOH of this solution? Can you show me how you came up with this answer? Thank you.
*April 27, 2011*

**Chemistry**

Can you show me the calculation? How many ml of a 2 M solution of HCL would be needed to neutralize 2 ml of a 5 M solution of KOH?
*April 27, 2011*

**Chemistry**

how many grams of CaCl2 would be required to be added to water to prepare 1 liter (1000 ml) of a 1.72% (w/v) aqueous solution of CaCl2?
*April 27, 2011*

**biology**

Explain negative feedback and give one example in the human body.
*April 15, 2011*

**MATH**

WHAT IS THE ANSWER FOR 3 SIXES IN SIMLET FORM
*March 7, 2011*

**4th grade math**

WHAT IS THE ANSWER FOR 3 SIXES SIMPLETS FORM
*February 22, 2011*

**Pre Algebra**

two sums of money totaling 15000 earn 5% and 7% annual interest. if the total interest from both investments amounts to $870, how much is invested at each rate?
*February 9, 2011*

**BioChemistry**

Write the oxidation equation for sec-butyl alcohol. How do I do this?
*February 9, 2011*

**BioChemistry**

Write the oxidation equation for sec-butyl alcohol. How do I do this?
*February 9, 2011*

**physics**

An athlete executing a long jump leaves the ground at a 30.3 angle and travels 7.68 . What is the take off speed? If this speed were increased by just 3.0%, how much longer would the jump be?
*February 3, 2011*

**geometry**

is it a hexagon?
*January 28, 2011*

**geometry**

what is the name of the figure that is 36 inches around and that has equal sides, each 6 inches long?
*January 28, 2011*

**science**

a car traveling 20m/s brakes and takes 3s to stop. what is the acceleration in m/s2?
*January 6, 2011*

**uc**

As an experiment she randomly selected 15 students and randomly assigned them to one of three groups which include either a PowerPoint presentation created by the faculty, AuthorGen Presentation created by the faculty, or a well known tutorial by the ABC company. After ...
*December 6, 2010*

**math**

what were the headlines after a mad scientist trained two eggs to attack a candy store with sharp sticks
*November 30, 2010*

**Chemistry**

the formula H2O2 is an example of 1.molecular formula 2. an empirical formula 3.an ionic formula 4.an organic formula
*November 28, 2010*

**Math**

Hi Sorry I'm reposting this question, I think the answer that was provided was not correct because of the ambiguity of the original question but if I could have someone workout the question as written it would be much appreciated: See below discussion. 4x^3y^-2 / 2x^-1y^4 ...
*November 20, 2010*

**Math**

The way I wrote it is exactly how the book has it. It's all written together without brackets. Very ambiguous I agree but I'm now not sure if the answer you provided is correct.
*November 20, 2010*

**Math**

4x^3y^-2 / 2x^-1y^4 is the answer: 2x^4y^-6 ?
*November 20, 2010*

**maths**

paul is paid $5 per hour. one day paul works for 4 hours 15 minutes. calculate his total pay.
*October 25, 2010*

**maths**

a boat travel 5 miles due south and then 11 miles due east. how far is it from the starting point?
*October 25, 2010*

**maths**

juan had $3000 in his savings account. a year later, he had $4000 because interest accured on his savings. find the percent increase.
*October 25, 2010*

**maths**

a ramp 10ft long is connected to the back of a truck that is 4ft off the ground. how far away from the truck does the ramp touch the ground?
*October 25, 2010*

**math**

the diagram shows a square xyrz of side 15m with an inscribed circle centre o.calculate the area of the square, circle and the shaded region
*October 21, 2010*

**maths**

for he formula A=P+Prt, find the value of (a). (i) A when P = 750. r=0.09 and t=8 (ii) P when A=720.r=0.12 and t=5 (b) make t the subject of the formula
*October 19, 2010*

**maths**

two cyclists go around a race track repeatedly. the first cyclist takes 105 seconds to complete a circuit. the other cyclist takes 75 seconds. they begin together at the starting line. calculate the length of time, in minutes and seconds that would have elapsed before they are...
*October 19, 2010*

**math**

the diagram below represents a drinking glass of diameter 10cm. it is partially filled to a height of hcm with apple juice. (a) using 3.14 give an expression in term of h for the volume of juice. the actual volume of the juice is 0.471 litres. (b) calculate the value of h.( 1 ...
*October 19, 2010*

**maths**

solve the following pair of simultaneous equations. 2x-3y=13 3x+y=3
*October 19, 2010*

**maths**

karen decorated her mother's birthday cake. one-third of candles are pink, three-eights are yellow, one-quater are blue and the two remaining candles are white. calculate (a). the fraction of candles that are white. (b). the total number of candles on the cake.
*October 19, 2010*

**MATH**

WRITE DOWN THE VALUE OF (4XY)
*October 17, 2010*

**math**

these two rectangles are the similar, rectangle number one: the width is 42cm and the height is 27cm. rectangle two: the width is 56cm find x.
*October 17, 2010*

**math**

expand x^(4-2x)
*October 17, 2010*

**math**

write down the value of 27 1/3
*October 17, 2010*

**Physics**

A 25 kg mass is on a level, rough surface where the force of friction is a constant 15 N. A horizontal applied force of 65 N acts on the mass. The mass is initially at rest. What speed does that mass have after being moved 2.0m?
*October 17, 2010*

**math**

a car uses 25 litres of petrol to travel 200 miles. how many litres of petrol will the car use to travel 450 miles?
*October 16, 2010*

**math**

mr jones buys a new car for $50,000. the car decreases in value at the rate of 30% each year. find the value of the car after two years.
*October 15, 2010*

**math**

expand and simplify 4(3k-2)+3(4-k)
*October 15, 2010*

**math**

write down the value of (4xy) degress
*October 15, 2010*

**maths **

a car uses 25 litres of petrol to travel 200 miles. how many litres of petrol will the car use to travel 450 miles?
*October 15, 2010*

**geometry**

AB is 9cm and AC is 19cm calculate the lenght of BC if the angle is a 90 degress
*October 15, 2010*

**acconting**

the dept of a business are considered
*October 12, 2010*

**accounting**

can i get answers for pen foster exams#500843
*October 12, 2010*

**calculus**

Find dy/dx 4x^2+y^2-8x+4y+4=0, find points on graph of the equation where there is a vertical or horizontal tangent line
*October 11, 2010*

**physics**

I need help to work a problem like this
*October 8, 2010*

**Trigonometry**

A space shuttle pilot flying over the suez canal finds that the angle of depression to one end of the canal is 38.25 degrees and the angle of depression to the other end is 52.75 degrees. If the canal is 100.6 miles long, find the altitude of the space shuttle
*October 4, 2010*

**3rd grade**

what is the best estimate of 89+12 a 90 b. 100 c. 80 d. none of these
*October 3, 2010*

**english**

how to do a work cited page for a consumerisum project for a milkshakes
*September 29, 2010*

**Physics**

you push with a 40-N horizontal force on a 2-kg box of coffee resting on a horizontal surface. The force of friction on the box is 12 N. Show that the acceleration is 4 m/s^2
*September 26, 2010*

**5th grade math**

12x+3x=15x 12+3=15 x+x=x =15x
*August 19, 2010*

**Math ( Algebra 1 )**

Two rectangles have the same width. The length of one is 2 feet longer than the width. The length of the other is 4 feet longer than the width. The larger rectangle has 8 more square feet than the smaller. What is the width of the rectangles?
*July 22, 2010*

**physics**

Suppose you drop a ball into the ocean in a place where there is no current.Will waves move the ball away,or will it bob in place?
*May 31, 2010*

**math**

4x^3y-20x^2y+16y
*April 15, 2010*

**7th grade**

if you take apart 5x5x5 cube and build a pyramid with the same cubes, with each layer of the pyramid being a square and the top ending as a 1x1x1. How many tiers can you make?
*April 11, 2010*

**HCA 210**

how would you ensure the mentally ill are placed into the appropriate care facility
*April 10, 2010*

**Precalculus **

Describe the important features of exponential decay.
*March 10, 2010*

**chemistry**

how many valence electrons is an oxygen atom able to attract from other atoms
*February 7, 2010*

**algebra**

I rent out 2/5 of my books, give 3 away, buy 9 and now have 27. How many did I start with - I know it's 35 but I can't make the formula work
*January 22, 2010*

**GPA**

I am confused on how weighted courses work. At my school, a two semester course is weighted (1.2) and a semester course is weighted (.6) How do these numbers help your gpa?
*December 17, 2009*

**social studies**

If there is collision between the president and Congress, can Congress restrain the president in foreign policy making?
*December 12, 2009*

**math 6 grade**

1. A farmer had several pens out by the barn. He had used 17 lenghts of fence to make the pens, but now he needs to use six of those fence lengths for another project. He wants to remove six fence lenghts but still have two square pens remaing. Which lenghts should he remove? ...
*December 3, 2009*

**Science**

What are some of the problems when designing a new single cell
*November 30, 2009*

**Enchancing Children's Self-Esteem**

Are these answes correct
*October 31, 2009*

**History**

Why did parents pressure local governments to reform public schools?
*October 1, 2009*

**math**

7 80
*April 22, 2009*

**math**

i dont know
*April 22, 2009*

**math**

the average american use about 80gallons of watereach day how many people are in your family use this number to figure out about how many gallons of water uses each day
*April 22, 2009*

**MATH**

ONE CHILD IN THE U.S. THROWS OUT ABOUT 180 DISPOSABLE CONTAINERS EACH SCHOOL YEAR HOW MANY CONTAINERS WILL HE OR SHE THROW OUT IN 2 YEARS 5 YEARS
*April 22, 2009*

**MATH**

ONE CHILD IN THE U.S. THROWS OUT ABOUT 180 DISPOSABLE CONTAINERS EACH SCHOOL YEAR HOW MANY CONTAINERS WILL HE OR SHE THROW OUT IN 2 YEARS
*April 22, 2009*

**5th grade**

IN THE UNITED STATES EACH PERSON CREATES ABOUT 4 POUNDS OF WASTE EVERYDAY HOW MANY POUNDS OF WASTE WILL PEOPLE MAKE IN 5 WEEKS
*April 22, 2009*

**social studies**

what are some different ideas scientists have about where the first Americans came from?
*March 17, 2009*

**Math**

Find the y- and x-intercepts for the equation. I have an idea of how to do this but want to make sure I am going in the right direction! Thanks! 4y = -28 + 7x
*March 2, 2009*

**Math**

Please simplify. Write your answer using positive exponents. (8^2)^ -1 =? In case you are having trouble reading it, it translates to: (8 squared) to the -1 power (exponent) or (8 ^2) ^ -1 = ? Any ideas? I have an idea, but would appreicate some feed back! Thanks!
*February 28, 2009*

**Math**

Find the slope of the line that goes through the given points. I think my answer is correct but would appreciate some feedback so that I may compare! Thanks in advance! (3,-2),(-1,-6)
*February 26, 2009*

**Algebra**

Find the slope of the line that goes through the given points. I think my answer is correct but would appreciate some feedback so that I may compare! Thanks in advance! (3,-2),(-1,-6)
*February 26, 2009*

**Algebra**

I need 3 ordered pairs of points that would be solutions to this equation. Can anyone help please, thanks! 4x - y = 7
*February 18, 2009*

**Algebra**

Hi! Does 4 over the square root of 12 reduce to 4 over 2 times the square root of three?
*December 15, 2008*

**205**

2.c 3.c 4.c 6.c 7.c 8.c 10.c 11.b
*May 8, 2008*

**calculus**

Could somebody please check these for me? Solve the differential equation with the given initial solution. 1. (dy/dx)=(-y/3) for y(0)=10 my answer was y=10e^(-x/3) 2. dP/dt=P+4 for P(0)=100 my answer was P=104(e^t)-4 3. dz/dt=te^z for z(0)=0 my answer was z=-ln(-.5(t^2)+1) THANKS
*April 16, 2008*

**calculus**

Could somebody please check these for me? Solve the differential equation with the given initial solution. 1. (dy/dx)=(-y/3) for y(0)=10 my answer was y=10e^(-x/3) 2. dP/dt=P+4 for P(0)=100 my answer was P=104(e^t)-4 3. dz/dt=te^z for z(0)=0 my answer was z=-ln(-.5(t^2)+1) THANKS
*April 14, 2008*

**chemistry**

correction: the base is NaOH and acid is HC2H3O2
*April 9, 2008*

**chemistry**

What is the pH of the solution created by combining 12.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid base acid NaOH HC2H3O2
*April 9, 2008*

**chemistry**

I'm supposed to find the pH of .1M HC2H3O2. since this is a weak acid, i used the ICE method with the given 1.8x10^-5 ka. and i got a pH of 4.4, but it was wrong....
*April 9, 2008*

**Chemistry**

what is the pH of a 0.10 M NH3???
*April 8, 2008*

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