# Posts by elizabeth

Total # Posts: 1,044

**chemistry**

what is the pH of .28 M HNO3 (aq) at 25 degree celsius? (Kw = 1.0 x 10 ^-14)

*March 14, 2010*

**7th Grade Math**

Find the area of the circle described. Use pi= 22/7. Diameter= 1.4cm Please help!

*March 13, 2010*

**chemistry 101**

1008 cCal

*March 9, 2010*

**physics**

(4pi*10^-7)(4.8*380/.32) =____mT

*March 9, 2010*

**Math**

Use the rules of exponents to simplify each exponential expression. Your result cannot contain any negative exponents. Thank you for your help. (2m^2)^3 (4x^2y^4z^7)^0

*March 6, 2010*

**ENGLISH**

What do you think of when you hear the term academic honesty? How does knowing the difference among original ideas, common knowledge, and plagiarism help you stay honest when you write an academic paper? What are some of the consequences of not being academically honest?

*March 3, 2010*

**Chemistry**

The vapor pressure of CCl3F at 300 K is 856 torr. If 11.5 g of CCl3F is enclosed in a 1.0 L container, will any liquid be present? If so, what mass of liquid?

*February 19, 2010*

**7th Grade Literacy**

What are 3 IMPORTANT characteristics that a class president needs? Please answer!!

*February 17, 2010*

**geometry**

How do you draw 224 degree angle???

*February 16, 2010*

**Science**

Yes it does.

*February 16, 2010*

**7th grade Literacy**

What are the characteristics that make a good class president? Please answer!!!

*February 15, 2010*

**Chemistry**

Please help me !! Frequently in the distillation of methanol and water, the methanol distillate appears cloudy. To what might you attribute such an observation? Thanks.

*February 8, 2010*

**Biology**

The mitotic process provides a mechanism by which cells should be able to transfer their genomic contents from cell generation to cell generation without error or change. is this inviolate?

*February 5, 2010*

**Biology**

Where in the cell cycle can one find the phragmoplast? What is it's probable function?

*February 5, 2010*

**Chemistry**

Please help me Sketch a separation scheme showing how you would separate the following two component mixture: m-nitroaniline and hexanol. All the substances are soluble in ether. You can use any of the following solutions in your separation: aqueous hydrochloric acid, aqueous ...

*February 4, 2010*

**Pre-Algebra B**

5 | 4,5,5,6,6,6,7,8,8,9 6 | 0,0,1,1,2,2,2,3,4,4,4,5,6,7 7 | 0,1,1,1 How do you find the mean of this stem-and-leaf plot? Please answer!!

*January 23, 2010*

**Mathematics in Economy**

I'd like to add that the '2' after x and y means 'squared'.

*January 18, 2010*

**Mathematics in Economy**

A firm produces two different kinds A and B of a commodity. The daily cost of producing x units of A and y units of B is C(x,y) = 0.04x2 + 0.01xy + 0.01y2 +4x + 2y +500 Suppose that firm sells all its output at a price per unit of 15 for A and 9 for B. Find the daily ...

*January 18, 2010*

**Geometry**

If each side of a regular pentagon is x^2 + 17 and each side of a regular hexagon is x^2 + 2x, for what value or values of x will the perimeters of the figures be equal?

*January 17, 2010*

**math**

Quadrant 2

*January 17, 2010*

**reading response to the personwho answered this**

thank you!! Ireally apreciate it!!

*January 14, 2010*

**reading**

when a prarie fire approached,farmers set __. What would it be? Please help me!!

*January 14, 2010*

**pre-algebra B**

Milli tosses a coin and a six-sided die.The numbers on the die are 1 through 6. What is the probability that Milli will toss a tail and roll an odd number?

*January 12, 2010*

**english**

Is there an adjective to describe someone who performs critical thinking?

*January 7, 2010*

**math**

evaluate the expression for the given value of the variable p + 13 when p = 8

*January 7, 2010*

**Pre-Algebra B**

The selling price of a bicycle that had sold for $220 last year was increased by 15%. What is the new price? Please answer within 5-10 minutes.

*December 26, 2009*

**math**

a ski slope at a mountain has an angle of elevation of 25.2 degrees. the vertical height of the slope is 1808 feet. how long is the ski slope. show diagram

*December 14, 2009*

**SCIENCE**

HOW COULD MEASURING THE ORBIT OF A COMET HELP SCIENTISTS UNDERSTAND WHEN IT WILL NEXT BE VISIBLE FROM EARTH?

*December 14, 2009*

**math**

When a coin is tossed four times, sixteen equally likely outcomes are possible as shown below: HHHH HHHT HHTH HHTT HTHH HTHT HTTH HTTT THHH THHT THTH THTT TTHH TTHT TTTH TTTT Let X denote the total number of tails obtained in the four tosses. Find the probability distribution ...

*December 5, 2009*

**Math**

Determine whether the situation calls for a discrete or continuous random variable. 8) The cost of a randomly selected orange 9) The pH level in a shampoo 10) The braking time of a car 11) The number of field goals kicked in a football game

*December 5, 2009*

**Physics**

OK i have one attempt left, first i change the gauge pressue to newton/m^2? And since P= F/A solve for A after making f = 1440*g? Theni have to divide it by 4 for every tire? but im having trouble with conversions, and my final answer being in cm^2. SOOO confused

*December 4, 2009*

**Physics**

Hi I tried asking this question yesterday but still had some confusion.Since the area must be in cm^2. IP The weight of your 1440 kg car is supported equally by its four tires, each inflated to a gauge pressure of 30.0 lb/in^2 . What is the area of contact each tire makes with...

*December 4, 2009*

**Physics**

so if the answer wants cm^2 what would be the conversion?

*December 3, 2009*

**Physics**

Hey can someone help, im having trouble converting alot. IP The weight of your 1440 kg car is supported equally by its four tires, each inflated to a gauge pressure of 30.0 lb/in^2. What is the area of contact each tire makes with the road? What gauge pressure is required to ...

*December 3, 2009*

**6th grade**

what are the parts of a plant cell

*December 2, 2009*

**Pre-Algebra B**

Find the area of a circle whose radius is 12.7 cm

*November 30, 2009*

**Computer Science**

What is the halting problem? What does it have to do with self referential paradoxes? How do I make sense of this? "So suppose I have a black box which can decide the halting problem, that is I can give it a program P and the box tells me if P will ever stop. Using this I...

*November 22, 2009*

**Physics**

The applied force is W = Fdcos(theta).

*November 18, 2009*

**physics**

A 10g marble is spun so that it rolls at 150rpm around the inside of a steel tube. The tube has a 12cm diameter. Assume the rolling resistance is small enough for the marble to maintain 150rpm for several seconds. During this time, will the marble spin in a horizontal circle ...

*November 15, 2009*

**physics**

A 30g ball rolls around a 40cm diameter L-shaped track at 60rpm. What is the magnitude of the net force that the track exerts on the ball? rolling friction can be neglected.

*November 15, 2009*

**Pre- Algebra**

-6x-15>57

*November 12, 2009*

**Math (calc)**

yes that's what I thought. Thank you!

*November 7, 2009*

**Math (calc)**

Given the function: f(x)=x^3(x-2)^2 , on the interval [-1,3] find the domain and Asymptotes ...Isn't the domain (-1<x<3) ? and as for the asymptotes I thought you could only find them for rational functions and since that function is not rational I guess there aren&#...

*November 7, 2009*

**Chemistry**

I want to say the answe is A although I am not sure I could be wrong it has been almostlittle over 20 years since I have been in school

*November 7, 2009*

**Earth Science**

Earth is always changing. What are two forces that cause the earth's surface to constantly change and what are their effects on the planet? Please answer within a few minutes.

*November 4, 2009*

**Life Science**

By living in areas where other organisms inhabit,humans change the environmental conditions for those organisms. Describe two ways humans impact the environment and what the effects are on the earth? Thesse can either be positive or negative. Please answer in a few minutes.

*November 3, 2009*

**Math**

This is the layout of the McDougal's backyard.The scale is 1 centimeters to 5 centimeters.The actual area of the pool is 375 square meters.The length of the pool is 25 meters. How do I find the area of the pool on the layout?

*October 26, 2009*

**Math**

45?

*October 26, 2009*

**Math**

This is the layout of the McDougal's backyard.The scale is 1 centimeter to 5 meters.The length of the deck on the layout is 7 centimeters.The width of the deck on the deck is 2 centimeters. What is the actual perimeter of the deck? Pls answer within the next minute and ...

*October 26, 2009*

**Math**

96 my multiplication was wrong.Sorry

*October 26, 2009*

**Math**

9.6 Thanks!

*October 26, 2009*

**Math**

Round your answer to the nearest whole number when necessary. In a basketball game,Ivring scored 80% of the teams points.If team as a whole scored 120 points,how many points did Ivring score? PLS answer within the next minute!!

*October 26, 2009*

**physics**

You are explaining to friends why astronauts feel weightless orbiting in the space shuttle, and they respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn't so by calculating how much weaker gravity is at h = 330 km above ...

*October 12, 2009*

**physics**

You are explaining to friends why astronauts feel weightless orbiting in the space shuttle, and they respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn't so by calculating how much weaker gravity is at h = 330 km above ...

*October 12, 2009*

**Computer Science**

Running time is 1,2,3,4,5,6,7,8,9,10. It sll got put together, but really those numbers are separate from the n numbers

*October 12, 2009*

**Computer Science**

I am learning in my computer science class about algorithms. My teacher wrote on the board: n= 1 running time= 1 3 1+1= 2 7 1+2= 3 15 1+3= 4 31 1+4=5 63 1+5= 6 127 7 255 8 511 9 1023 10 How in the world does this happen? It has something to do with log n steps. I don't ...

*October 12, 2009*

**4 grade FL social studies weekly**

Do you know how Fort Caroline and Missions San Luis are alike.

*October 9, 2009*

**Biology**

solid, liquid, gase

*September 22, 2009*

**biology**

studying genetics in mammals where can i find out about felines and canines that are proven mainly allergen free, thought not genetically modified?

*September 22, 2009*

**algebra**

Do you know where I can get this worksheet online to print?

*September 17, 2009*

**English**

Thank you Ms.Sue But then on this one: Many stories have been written about the old Spanish Main. The simple predicate would be: "have been written"? Thanks and have a good one.

*September 16, 2009*

**english**

I need to find the simple subject and simple predicate: Every sentence should begin with a capital letter. I know that "sentence" is the simple subject but I'm not sure if the simple predicate must include the word "should" or if it's just "...

*September 16, 2009*

**psychology**

•Describe neurotransmitters. Explain what they are, their function within the body, and their impact on behavior. •Describe the connection between neurons and neurotransmitters. •Choose two neurotransmitters and discuss their function within the body. Discuss ...

*September 12, 2009*

**Science**

thanks.:-)

*September 9, 2009*

**Science**

What is an energy production pyramid??

*September 9, 2009*

**Social studies**

Yeah. They lived in the Southweast which is a desert. Then, the correct answer is A.

*September 2, 2009*

**Social studies**

C

*September 2, 2009*

**Social studies**

Why did the ancient puebloans most likely use materials other than wood to build their homes? A. Few trees grew in the dry climate in which they lived B. Wood was considered too sacred to use for building C.They were nomads and needed to move their homes quiclky D. The Ice Age...

*September 2, 2009*

**10th grade**

explain how to add measurements of segments 18.4 4.7 p to q to s

*August 27, 2009*

**Math**

Linda got a math test handed back to her and got a 96% on it. However she lost the test, not knowing what she got. If she knows that she scored a 43 on the test then how many 1- mark questions are there on the test?

*July 15, 2009*

**Maths**

What is 6:1/2= 6:12= 6:2= ?

*June 18, 2009*

**Math**

i do not understand what you are saying...i need to find the probability of getting 2heads combined with rolling a four on a number cube

*June 17, 2009*

**Math**

2 coins and 1 six sided cube are tossed. What is the probability of getting two heads and and a four?

*June 17, 2009*

**12th grade**

what are substitutes

*June 9, 2009*

**Accounting**

prepared an adjusted trail balance, journalizing, posting and prepaid a financial statements would be completed last

*May 24, 2009*

**Chemistry I**

A scuba diver's tank contains 0.23 kg of O2 compressed into a volume of 3.5 L. (a) Calculate the gas pressure inside the tank at 11°C. ________atm (b) What volume would this oxygen occupy at 20°C and 0.92 atm? ________L what are the formulas for this problem?

*May 17, 2009*

**Chemistry**

ok so... sqrt(3 x 8.314 x 289/146.056) = 7.025 m/s is that right?

*May 17, 2009*

**fractions in input output table**

what is the rule for the input and the output

*May 14, 2009*

**math**

what is the equation for the function table X= 4 5 6 7 12 Y= -2 0 2 4 ?

*April 20, 2009*

**Math**

Find the distance between A and B, where A and B have the following coordinates: A(–3, 5); B(5, –8). Show your work by using the notation sqrt( ) for square root.

*April 16, 2009*

**science**

your mama

*March 30, 2009*

**algebra 1p**

5(x-3)-3(x-1)

*March 24, 2009*

**first aid**

laceration to foream which is actively bleeding. what should the - Immediate action to pervent further injury. How to assess the injury first aid procedures the next stage what happends to the casualty? and How?

*March 15, 2009*

**sports**

why is strenght endurance speed flexibility body composition agility balance co-ordination power reaction time all important to an athlete

*March 13, 2009*

**science**

I have a bill like a duck, But the hair of a mammal i lay eggs like a bird, But I nurse my young what am I?

*March 11, 2009*

**biology**

the process of disjunction occurs during what?

*March 4, 2009*

**sport**

why will these lifestyle factors effect performance in sport. smoking drinking stress diet.

*March 3, 2009*

**chemistry**

Calculate the molarity of a solution that contains 64.0 g Al2(SO4)3in 340.5 mL water.

*February 23, 2009*

**business law**

where do i go to find stuff on lawfirm expanding to nearby ciy and staes

*February 22, 2009*

**medical**

hi my friend has moved to spain and has taken ill they say she has FEBRA but know one knows what this is any help would be greatfull

*February 22, 2009*

**9th grade science**

what three ways can you charge an object?- grade 9 physics(science)

*January 8, 2009*

**algebra**

the area of a pizza is 220 square centimeters. what is the radius

*January 7, 2009*

**Math**

-7+3

*January 7, 2009*

**science**

if the mass of an object is 20g and the volume of the object is 100ml what is the density of the object

*December 14, 2008*

**calculus**

so far i have dR/R = kdt ln R = kt + C am i on the right track? what do i do next?

*December 7, 2008*

**calculus**

solve the differential equation. assume a, b and k are non zero constants. dR/dt = kR i don't understand how to do these problems.

*December 7, 2008*

**help plzzz**

I got A LINE OF CHORUS GIRLS

*December 3, 2008*

**proportions**

x over 100/125 = 75/225 over 4/25 what is x and how do you get the answer please

*November 30, 2008*

**proportions**

3/8 over 3 = x over 5/12

*November 30, 2008*