Friday

October 28, 2016
Total # Posts: 215

**Chemistry**

What type of reaction is listed below? Prove that it is balanced by listing the number of elements on both side of the equation (reactants vs. products)? CH 3 COOH + NaHCO 3 NaCH 3 COO + H 2 CO 3 2. What type of reaction occurred with H 2 CO 3 from the above equation ...

*September 28, 2016*

**Evironmental Science**

All of the following make up the three major categories of environmental problems except? a. loss of biodiversity. b. overpopulation. c. resource depletion.

*September 28, 2016*

**mathematics**

so this would be my answer: 30 40-10 (40-10)^2 = 40^2 -2(40)(10) + 10^2 30 squared = 900 40 squared = 1600 2(40)(10) = 800 10 squared = 100 1600 - 800 + 100 = 900 900=900

*June 9, 2016*

**mathematics**

So the answer would be 900 from all that work?

*June 9, 2016*

**mathematics**

It is kind of difficult for me.

*June 9, 2016*

**mathematics**

Pick a two-digit number greater than 25. Rewrite your two-digit number as a difference of two numbers. Show how to use the identity (x − y)^2 = x^2 − 2xy + y^2 to square your number without using a calculator.

*June 9, 2016*

**Spanish**

what unusual items are made of sawdust in honduras

*April 28, 2016*

**snowmobiles/science**

What other things would be used to make a snowmobile accelerate?

*March 4, 2016*

**Math**

The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of about 10. Suppose that 16 individuals are randomly chosen. Is it appropriate to use the normal approximation for the sampling ...

*November 20, 2015*

**Statistics**

The percent of fat calories that a person in America consumes each day is normally distributed with a mean of 36 and a standard deviation of about 10. Suppose that 16 individuals are randomly chosen for an experiment. A) Is it appropriate to use the normal approximation for ...

*November 19, 2015*

**accounting**

December Interest on a bank loan is due on January 2nd of the following year: accrue $1,000. How do u record interest expense and interest payable on a journal ledger? Would you record interest expense on the debit side and interest payable on the credit side?

*November 9, 2015*

**PLEASE HELP ASAP!! Algebra**

1/2 x 1/2 x 1/2 x 1/2 x 1/2 =_____ Not 1/2 x 5

*November 6, 2015*

**Math**

The birth weight of full-term babies was found to follow a normal distribution with a mean of 3500grams, and standard deviation of 600grams. A) What is probability that the birth weight is less than 3000 grams. = P(X<3000) Correct? B) probability that birth weight exceeds ...

*November 5, 2015*

**math**

Each person sends out four invitations. 4X5=___number of invitations given out.

*October 28, 2015*

**math**

4x2x3=24 different outfits

*October 28, 2015*

**Math**

Two individuals, A and B, are finalist for a chess championship. They will play a sequence of games, each of which can result in a win for A, a win for B, or a draw. Outcomes of successive games are independent with P(A wins) =.3, P(B wins)= .2, P(draw)=.5. Each time a player ...

*October 28, 2015*

**chemistry conversion**

That is correct

*October 28, 2015*

**Science**

Venus is sometimes called Earth's twin because Venus and Earth are almost the same size, have about the same mass (they weigh about the same), and have a very similar composition (are made of the same material).Venus rotates backwards compared to Earth and the other planets.

*October 28, 2015*

**Statistics**

A certain type of artificial heart has four independent, critical components.Failure of any one of these components is a serious problem that will cause the artificial heart to fail. The 5 year failure rate for each component follows: component 1=.02, component 2=.05, ...

*October 28, 2015*

**chemistry**

what is the

*October 21, 2015*

**chemistry**

Please Ignore this question

*October 21, 2015*

**chemistry**

what is the pH of .001M solution of acid (pKa=3)

*October 21, 2015*

**math**

What if it was 48in high?

*October 11, 2015*

**math**

If a door measures 78in tall by 35in wide will an entertainment center measuring 60in x 48in x 48in fit through it? Im not even sure where to start!

*October 11, 2015*

**Math**

My calculator cannot compute that complicated kind of function. And plus, 500!/21 is not a part of the multiple choices.

*September 20, 2015*

**Math**

500! is divisible by 21. How many times can 21 go into 500! ? Have zero clue how to do this. Thanks in advance!

*September 20, 2015*

**Physics**

a full draw is the maximum distance that an archer can pull an arrow. Using the recurve bow shown below, a particular archer requires an average force of 130N to pull a full draw of 70.0cm. (when the arrow is relaxed in the bow, there is a distance of 30.0cm btween the arrow ...

*July 26, 2015*

**Chemical Engineering**

When a manometer is subjected to a time dependent pressure differential, the level of liquid in the legs changes with time according to the equation: (L/g)*(d^2h/dt^2)+(8uL/ygr^2)*(dh/dt)+h = dp/yg where L = length of liquid in tube, h is the height differential, dp is the ...

*May 12, 2015*

**math**

Can somebody help me solve this problem for x using the distributive property? 1/2(4x+10)=16 I got x=9

*February 5, 2015*

**International Business: Please Check Answer**

Hi, Please help me! I need to know is these is the correct answer for these questions. Thanks for your help! Some countries try to hold the value of their currency within some range against an important reference currency. This is referred to as what? a. A dirty-float system. ...

*November 18, 2014*

**Business: Help Is Needed ASAP**

Help Is Needed ASAP Hi, Please help me! I need to know is these is the correct answer for these questions. Thanks for your help! Some countries try to hold the value of their currency within some range against an important reference currency. This is referred to as what? a. A ...

*November 17, 2014*

**S.S. To Ms.Sue**

Correct answer is D. Browsing :)

*October 27, 2014*

**Geometry**

translate the following vertice (8,3) to (x-3,y-8)?

*October 6, 2014*

**math**

a 132 inch lenght of ribbon is to be cut into 3 pieces the longest piece is to be 39 inches longer than the shortest piece and the third piece is to be half the length of the longest piece find the length of each piece of ribbon

*September 17, 2014*

**statistics**

A state administered standardized reading exam is given to eighth grade students. The scores on this exam for all students statewide have a normal distribution with a mean of 507 and a standard deviation of 60. A local Junior High principal has decided to give an award to any ...

*September 4, 2014*

**Math**

the time required for one complete oscillation of a pendulum is called its period. if the length L of the pendulum is measured in feet and the period P n seconds, then the period is given by P=2¶(L/g)^1/2, where g is constant. use differentials to show the percentage ...

*July 8, 2014*

**calculus **

the time required for one complete oscillation of a pendulum is called its period. if the length L of the pendulum is measured in feet and the period P n seconds, then the period is given by P=2¶(L/g)^1/2, where g is constant. use differentials to show the percentage ...

*July 8, 2014*

**english**

I am trying to figure out details as to when groom service (short story) has taken place any help with examples would be great or even a lead? Ive read the story numerous times and I know it was before th 1940s but I cant figure out further.. I have found that the story ...

*June 20, 2014*

**Medical ethics**

What should I expect from this course. The title pretty much explains it but I would like some more detailed information please

*May 4, 2014*

**College Chemistry**

A solution is saturated in both nitrogen gas and sodium iodide at 50 degrees C . When the solution is cooled to 25 degrees C what is most likely to occur?

*March 23, 2014*

**algebra word problem**

A long distance runner starts at the beginning of a trail and runs at a rate of 5 miles per hour. One hour later, a cyclist starts at the beginning of the trail and travels at a rate of 13 miles per hour. What is the amount of time that the cyclist travels before overtaking ...

*February 27, 2014*

**math algebra**

Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels at 115 miles per hour. The westbound train travels at 95 miles per hour. How long will it take for the two trains to be 504 miles apart?

*February 27, 2014*

**History**

I meant C on your answers, it was A on mine, but it is not correct!

*November 28, 2013*

**History**

A. is incorrect!!

*November 28, 2013*

**Science (Physics)**

On the moon, the acceleration due to gravity is only 1.6 m/s/s. If someone on earth can throw a baseball 24.2 m high, how high could she throw it on the moon?

*November 16, 2013*

**Algebra **

Solve using substitution method 3x+8y=20 x=24-7y

*August 10, 2013*

**general science**

how to explain how the mass of a rock could be found

*July 3, 2013*

**Geometry**

A farmer has 52 meters of fencing to make a rectangular corral. If the width is x, what is the length and area?

*May 9, 2013*

**calculus**

The height of a projectile launched into the air is given by h (t)= -16t^2 + 48t + 60, where h is the height of the projectile in feet above the ground and t is the number of seconds after its launch. Find the *instantaneous rate of change* in the height of the projectile at 1...

*April 26, 2013*

**algebra**

You are asked by the Pharmacist to add 45mEq of Ca Gluconate in an IV bag of D5% W1000ml. You have a concentrated vial of Ca Gluconate 4.4mEq/ml 50ml. How many ml of the concentrated vial needs to be added to the IV bag?

*February 16, 2013*

**physical sciene**

Two 2.2 kg physical science textbooks on a bookshelf are 0.15 m apart. What is the magnitude of the gravitational attraction between the books?

*February 14, 2013*

**physical sciene**

Neglecting air resistance, how fast is the object traveling when it strikes the gounnd at the end of 3.8s?

*February 9, 2013*

**business law**

Assume that the state of Kansas passes a law requiring all inline skates sold in Kansas to have disc brakes. Assume that there are no federal regulations covering inline skate design. Assume also, that the required disc brakes would make inline skates easier to stop and thus ...

*January 29, 2013*

**PHYSICS HELP!**

(A) w = (21rev/min) * (1min/60sec) * (2pi rad/1rev) = 2.2 rad/s (B) I = MR^2 I = (415kg)(33m)^2 I = 4.52E5 (I for one propeller) I for all three propellers = (4.52E5) * 3 = 1.36E6 (C) KE = (1/2) * Iw^2 = (1/2)(4.52E5)(2.2)^2 =1.1E6 J The book gives solutions for I and KE using...

*October 31, 2012*

**Problem solving:for 3rd grade**

Chelsea has 10 cookies for her friend Sarah they eat 8 how many are left? 10-8=2 2 cookies are left I hopes this helps

*October 25, 2012*

**algabra**

why are prime numbers beter when writing codes?

*October 22, 2012*

**Physics**

In a serious accident,a neclear plant's reactor vessal cracks,and all of the cooling water drains out.Although nuclear fission stops,readioactive decay continues to heat the reactor's 2.5 x 10^5 kg uranium core at a rate of 120 Mega-Watts.Once the core reaches its ...

*July 17, 2012*

**physics**

Doubling the frequency of a wave source doubles the speed of the waves. ( True or False)

*July 5, 2012*

**physics**

As these waves pass through their medium,is the medium carried along with them ?

*July 5, 2012*

**physics**

As the wavelength of a wave in a uniform medium increases, its speed will ?

*July 5, 2012*

**physics**

Which part of a wave relates to its energy ?

*July 5, 2012*

**PHS**

As these wave pass through their medium,is the medium carrief along with them ?

*July 5, 2012*

**PHSC**

As the wavelength of a wave in a uniform medium increases, its speed will ?

*July 5, 2012*

**PHSC**

Which part of a wave relates to its energy ?

*July 5, 2012*

**PHSC**

In a simulation on earth,an astronaut in his space suit climbs up a vertical ladder.On the moon,the same astronaut makes the same climb.In which case does the gravitational potential energy of the astronaut change by a greater amount?

*June 26, 2012*

**PHSC**

Explain the difference between the everyday use of the word "work" and the physical (physics related)use of the word "work".How is energy related to work?

*June 26, 2012*

**PHSC**

Explain how you could move an object and still do no work.

*June 26, 2012*

**phsc**

A satellite explodes in outer space, far from any other body,sending thousand of pieces in all direction.How does the linear momentum of the satellite before the explosion compare with the total linear momentum of all the pieces after the explosion ?

*June 26, 2012*

**phsc**

When you are driving a golf ball,a good follow-through helps to increase the distance of the drive. A good follow-through means that the club head is kept incontact with the ball as long as possible.Why does this technique allow you to hit the ball farther ?

*June 26, 2012*

**phsc**

You have a choice,you may get hit head-on by either an adult moving slowly on a bicycle or by a child that is moving twice as fast on a bicycle.The mass of the child is-one-half that of the adult on the bicycle.Which collision do you prefer ?

*June 26, 2012*

**phsc**

Two identical cars have the same speef one traveling east and one traveling west.Do the cars have the same momentum ?

*June 26, 2012*

**phsc**

Suppose you are playing ice hockey in the middle of a totally frictionless frozen pond.How can you move youself to the edge of the pond ?

*June 24, 2012*

**math**

what is the answer for each mile that jason runs alex runs 1/4 miles farther. if jason ran 6 miles how far did alex run?

*May 27, 2012*

**Sociology**

Can someone give me an idea to what show or movie to analyze and discuss Amercian family? Also it needs to include transitions and problems in family life, stages of family and alternative family forms. I cannot think for any show or movie off the top of my head. So any help ...

*May 21, 2012*

**Sociology**

How religious are the people of the United States? Do you think regilion is increasing or decreasing in our society?

*May 20, 2012*

**SOCIOLOGY**

What are some sacred things, persons,places, and ideas in comtemporary American society? All of these sacred elements connected with what we normally regard as religions?

*May 20, 2012*

**4th grade math**

Kamala had5,026 grams of flour in a canister. She bought a 4,157 gram bag of flour. She poured some flour from the bag to the canister. As a result, the mass of the flour in the canister is now twice the mass of the flour in the bag. How much is in the bag now?

*May 14, 2012*

**statistics**

The data set for the study is a sample of a survey conducted on the population of the American Intellectual Union (AIU). It is available via the following link: Excel 2007 DataSet with DataSet Key which contains the following nine sections of data that will be used throughout ...

*May 10, 2012*

**statistics**

The data set for the study is a sample of a survey conducted on the population of the American Intellectual Union (AIU). It is available via the following link: Excel 2007 DataSet with DataSet Key which contains the following nine sections of data that will be used throughout ...

*May 10, 2012*

**Chemistry**

A 55.81 gram irregular object made out of one of the metals in #6 raises the water level in a graduated cylinder from the 17.6 mL level to the 24.7 mL level. What is the density and identity of the metal?

*March 8, 2012*

**Chemistry**

I don't know the masses

*March 8, 2012*

**Chemistry**

Mass of weighed filter paper ? Mass of weighed filter paper plus recrystallized vanillin? Mass of recrystalized vanillin Mass impure vanillin Percent recovery Suggest how you could have improved your techniques to increase your percent recovery.

*March 8, 2012*

**algebra**

Factor out the greatest common factor in the expression? 11y^5-55y^2

*February 29, 2012*

**algebra**

2/3x-1/5y=2, 4/3x+4y=4

*February 5, 2012*

**algebra**

5x-2=y, 10x=4+2y

*February 5, 2012*

**algebra**

solve; 3x-y=-5, -2x+5y=-14

*February 5, 2012*

**algebra**

find the slope of a straight line that passes through the given pair of points (5,6) and (-3,1)

*January 29, 2012*

**algebra**

perform the indicated operation: 3/5 x 7/10

*January 6, 2012*

**Chemistry**

I have a 500mL flask, and I want to prepare 500mL of NaOH solution with a pH of 13.00. How many grams of Na OH do I need to put in the flask to arrive at this pH?

*December 8, 2011*

**Science**

the answer is SEAFLOOR SPREADING I promise

*December 6, 2011*

**Chemistry**

How many moles of hydrogen gas will be produced when the 0.03 g of magnesium reacts with excess hydrochloric acid?

*December 4, 2011*

**chemistry**

a lab experiment calls for 10% acetic acid solution. The lab has only 5% and 15% acetic solutions available. How much of each should be mixed to obtain 10 liters of a 10% solution?

*December 1, 2011*

**psychology**

how do psycho dynamic, physiological psychology, cognitive psychology, and cortical function effect aggressive behavior? in detailed answers please. i do not need links, i need answers.

*November 5, 2011*

**psychology**

what are variable that influence memory? i do not need links i need detailed answers. this is not a linking website, its supposed to give answers.

*November 5, 2011*

**psychology**

how do psycho dynamic, physiological psychology, cognitive psychology, and cortical function effect aggressive behavior? in detailed answers please.

*November 5, 2011*

**psychology**

what are variable that influence memory

*November 5, 2011*

**psychology**

explain the decay theory

*November 5, 2011*

**psychology**

explain the gestalt principle

*November 5, 2011*

**psychology**

how do psycho dynamic, physiological psychology, cognitive psychology, and cortical function effect aggressive behavior?

*November 5, 2011*