Thursday

May 26, 2016
Total # Posts: 2,405

**chemistry**

Consider the reaction between hydrogen and oxygen gases to form water: 2H2(g) + O2(g) ¨ 2H2O(l) Which of the following is not conserved in this reaction?
*September 30, 2013*

**intermediate algebra**

A local electronics store will sell seven AC adapters and two rechargeable flashlights for $86, or three AC adapters and four rechargeable flashlights for $84. What is the price of a single AC adapter and a single rechargeable flashlight?
*September 30, 2013*

**English**

what is nonfiction? it means that it is real so it is a "which a is an accurate statement."
*September 27, 2013*

**science**

An object with a mass of 70g and a volume of 100ml is most likely what substance
*September 26, 2013*

**Biochem**

Thank you!
*September 9, 2013*

**Biochem**

We will need 0.5L extraction buffer with 25 mM HEPES, 1 mM EDTA, and 1 mM DTT. Please calculate how many grams of each solute are needed. (HEPES 238.3; EDTA 292.2; DTT 154.2)
*September 9, 2013*

**small engane **

FIGURE A-9—This photo should be used to answer Question 15. 15. Two small engine technicians are disassembling the engine shown in Figure A-9. After observing the engine components, both technicians say that this engine has a splash-type lubrication system. Technician A ...
*September 5, 2013*

**Physics**

Identical point charges of +2.9 µC are fixed to three of the four corners of a square. What is the magnitude of the negative point charge that must be fixed to the fourth corner, so that the charge at the diagonally opposite corner experiences a net force of zero?
*September 4, 2013*

**Physics**

A hydrogen atom has a diameter of about 10.1 nm. Express this diameter in meters.
*August 26, 2013*

**Introduction to Physical Science**

thank you getting the hang of this
*August 22, 2013*

**Introduction to Physical Science**

How do you calculate the wavelength of the radio waves that are produced is 561 m, when electrons on a radio broadcasting tower are forced to oscillate up and down an antenna 535,000 times each second.
*August 22, 2013*

**economics**

the south african government is not providing enough welfare or subsidies to poor and underpriviledge?
*August 20, 2013*

**Algebra 1-Math**

There's a table that says Company A charges $0.36 plus 0.03. And Company B charges $0.06 per minute. The question Im having problems with are: How long is a call that costs the same amount no matter which company is used? Be sure to show your thinking?
*August 18, 2013*

**vocabulary**

___________definitions are subject to individual interpretation.
*August 12, 2013*

**algebra for business**

As an entrepreneur, there are going to be many decisions that you need to make, such as the price to charge your customers for your goods and services. You have just graduated from college and recently opened a specialty pizza restaurant. Based on surveys conducted in your ...
*August 11, 2013*

**geometry**

A cross country race course on flat ground has runners heading from point A for 3.5 km on a bearing of 047degT to point B. From point B they turn and run for 2.8 km on a bearing of 342degT to point C. They then run back to point A. Determine the Distance from C back to A.
*July 22, 2013*

**Statistics**

If 1000 raffle tickets were sold for a TV prize that is worth $275 and a ticket number is drawn to determine the winner, what is the expected value of the raffle?
*June 27, 2013*

**Trigonometry**

solve for all possible x in [0,2pi): (cscx+2)(cscx-√(2))=0
*June 26, 2013*

**Math**

P(7<x<9) when mu=7
*June 26, 2013*

**Math**

If P(F)=0.3, P(E or F) =.65 and P(E and F)=.15, find P(E)
*June 25, 2013*

**Applied Geometry maths**

How would I find out how far away from the base of the tower she was when she made her first measurement of 15deg20'
*June 19, 2013*

**Geometry**

40. Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answer to the nearest square meter. (1 point) 3,028 m2 3,971 m2 1,357 m2 1,671 m2
*June 11, 2013*

**math**

.72222
*June 7, 2013*

**Writing help!**

1.In the bitter cold, (he, him) and Dad struggled to save the orange crop. My answer:he 2. (Her and me, She and I) have joined the Shutter and Lens. My answer:she and I 3. Phil showed Danny and (I, me) his butterfly collection. My answer:me 4. Bert warned Hank and (I, me) ...
*June 6, 2013*

**Writting**

Imagine that you are an agent who is interested in publishing new authors. Choose any book you like and present the book to a publisher in New York. You want to be the person responsible for putting the book on the shelf. You should convince the publisher that the book is well...
*June 4, 2013*

**Economics **

Explain the difference in prices for each of the following pairs of goods in terms of the laws of supply and demand: (a) natural diamonds and zircons (human-made diamonds), (b) a loaf of bread baked today compared with day-old bread, (c) roses in January and roses in June. ...
*June 4, 2013*

**Writting**

Persuasive Writing Assignment: Imagine that you are an agent who is interested in publishing new authors. Choose any book you like and present the book to a publisher in New York. You want to be the person responsible for putting the book on the shelf. You should convince the ...
*June 4, 2013*

**L.o**

Human or environmental problem under substance abuse. The impacts
*May 26, 2013*

**Algebra**

x-14/x-1=4-2x/x-1
*May 21, 2013*

**math**

oh yeah it says to simplify but I have no clue at all as to how to do this it is a complex number problem I think does anyone know how to do this?(im the one that posted the question)
*May 14, 2013*

**math**

-10i(5+8i)
*May 14, 2013*

**math**

im not really sure but maybe itslike a month because the way I put it in my calculator Is 1200/0.07=17142.85714 but im not good at math so idk. I tried at least
*May 14, 2013*

**science**

what may happen to an ecosystem if nonliving factors change or if one more populations are removed from or added to the ecosystem?
*April 29, 2013*

**Math**

Solve. 10/(3x) + 4/3 = (7 + x)/2x A) x = 1/3 B) x = 17/5x C) x = 1/5 D) x = 1/6 help??
*April 22, 2013*

**math**

a football team gained 12 yards on one play, lost 40 yards on another and gained 34 yards on the last play of the first half. they had already gained 345 yards during the half. what was the total yardage gain for the first half?
*April 21, 2013*

**algerbra**

solve the equation step by step list each step along with the property you used during that step -5*1*11*4
*April 19, 2013*

**math**

what is a verbal rule in math?
*April 16, 2013*

**Math**

me to
*April 16, 2013*

**Life science, business,maths literacy**

if you can change maths lit 2pure you can becm social workr
*April 8, 2013*

**Life science, business and maths literacy**

my name is amanda and am doing grade 12 at school am doing business,life sciences,geography and maths lit so what i want to know is the career that is suitable for these subjects
*April 8, 2013*

**Chemistry**

What mass of sodium oxide is produced from 4.23 grams of sodium and 20 liters of oxygen gas?
*April 3, 2013*

**Chemistry**

How would you know how to do this problem without knowing Slater's rule? we've yet been taught that rule so I'm not sure how else I would figure it out.
*April 1, 2013*

**science**

Do your own work please
*March 28, 2013*

**science**

can you describe the process of cellular respiration.include the words:sugar,energy,carbon dioxide,and water
*March 28, 2013*

**math**

and what would 0.1875 be as a fraction?
*March 26, 2013*

**math**

can someone tell me what would 0.0625 be as a fraction?
*March 26, 2013*

**Chemisry**

Why wouldn't it be KBr? Why are the twos added? How come its not just K + Br ==> KBr since their charges cancel out? Help!
*March 24, 2013*

**AP chemistry **

1). In a titration 20 mL of 0.100 M of HCl is added to 50.0 mL of 0.150 M of ammonia. A). What is the pH of NH3? B). What is the pH of the resulting solution? HELP :(
*March 21, 2013*

**4th grade math**

there are 12 inches in a foot so 14x12=168
*March 19, 2013*

**socials please check**

i believe 5
*March 19, 2013*

**Chemistry**

D the Keq expression of the 2nd one is = to (1/the first Keq expression)^(1/2) so take the answer of the first Keq, 5.4x10^13 and put it in that equation (1/(5.4x10^13))^(1/2)=1.36x10^-7=1.4x10^-7
*March 19, 2013*

**Chemistry**

hydronium is [OH-] ions, so you looking for the Ph that is most basic, which is your highest number 12.6
*March 19, 2013*

**Socials please check my answers**

that's correct
*March 19, 2013*

**math**

1.0425^12? if so the answer is 1.6478
*March 19, 2013*

**12Chemistry**

useing them maybe.. but i dont think they would bond them.. there specialty is teeth.. i only know about pharmacy because thats my intended major next year
*March 19, 2013*

**12Chemistry**

pharmacy, compounding not retail
*March 19, 2013*

**Math**

greater because theoretical would be 40 of 80 since there are 2 choice (heads or tails)
*March 19, 2013*

**math**

# of pennies/# of all coins 12+6+4+8=30 12/30=2/5
*March 19, 2013*

**math ALG 2!**

i've answered like 10 of these for you... you should be able to figure out how this works by the past problems if you really dont understand the process
*March 19, 2013*

**math ALG 2!**

38900
*March 19, 2013*

**math ALG 2!**

x10^6? if so.. 4,250,000
*March 19, 2013*

**math ALG 2!**

scientific notation helps make very large or very small numbers easier. for very large numbers you move the decimal place as many spaces to the left to leave you with one # on the left. you then take the # of spaces you moved and times it by 10^that number. You do the same for...
*March 19, 2013*

**math ALG 2!**

2.1x10^-7
*March 19, 2013*

**math ALG 2!**

7.4*10^6
*March 19, 2013*

**math ALG 2!**

2.3*10^7 you move the decimal place over till you have a number between 1 and 10 you then times it by 10^ number of spaces you moved over
*March 19, 2013*

**Math**

5b+9m=150.5 9b+5m=175.7 if you add them you have one equation. 14b+14m=326.2 14(b+m)=326.2 b+m=23.3 b=23.3-m sub. this back into one the original equations 9(23.3-m)+5m=175.5 209.7-9m+5m=175.5 -4m=-34.2 m=8.55 Plug that into the other equation 5b+9(8.55)=150.5 5b+76.95=150.5 ...
*March 19, 2013*

**chem**

sorry read it wrong, doing this now in chem
*March 19, 2013*

**chem**

PH=-log(ka)+log(base/acid) 4.8=-log(1.8*10^-8)+log(x/.15) 4.8=7.7447+log(x/.15) -2.9447=log(x/.15) .001135=x/.15 x=1.875*10^-4
*March 19, 2013*

**AlgebraB-2**

1. what graph? 3. -2x2-4 is 4 units below -2x2 4. wich func.?
*March 19, 2013*

**Calc**

f(x)=2ln(x^2+3)-x Domain [-3,5] how do i find the absolute maximum value of this?
*March 19, 2013*

**math mrs sue please help **

Find the property of the real numbers which will complete the argument below: 1. Zero is not a positive number. 2. Choose x as the smallest number. 3. The ________ property tells us that _________. 4. Therefore, between x and 0 there will be a third number, smaller than x. 5. ...
*March 15, 2013*

**Algebra 1**

Find the property of the real numbers which will complete the argument below: 1. Zero is not a positive number. 2. Choose x as the smallest number. 3. The ________ property tells us that _________. 4. Therefore, between x and 0 there will be a third number, smaller than x. 5. ...
*March 15, 2013*

**eng1511**

Need points so I can write an argumative essay
*March 11, 2013*

**eng1511**

The sure solution of unemployment is a better quality of education
*March 11, 2013*

**ENG1511**

Where is the passage cos u were suppose to copy n paste it
*March 11, 2013*

**Math**

ln24 - ln6
*March 5, 2013*

**ENG1511**

I wanna write 2 but have no clue where to start
*February 28, 2013*

**World History **

History and Geography Activity 12 what page is this on?
*February 25, 2013*

**College Algebra**

Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x^2+y^2+16x-18y+145=25
*February 18, 2013*

**English**

Thanks for you your help.
*February 18, 2013*

**English**

choices...curtail,devastate,digress,incentive,incorporate,indispensable,intermittent,rigor,squander,succumb here is the sentences: 1,2:Duane feels he ____(e)d too many years in inactivity, so now he welcomes the _______s of an exercise program. 3,4. The company decided to ...
*February 18, 2013*

**English**

I don't know what I think that is why I am asking for help !
*February 16, 2013*

**English**

Here is my choices...curtail,devastate,digress,inceantive,incorporate,indispensable,intermittent,rigor,squander,succumb here is the sentences: 1,2:Duane feels he ____(e)d too many years in inactivity,so now he welcomes the _______s of an exercise program. 3,4.The company ...
*February 16, 2013*

**english**

Willie is a ________ on our school. Not only does he start fights with opposing players on the basketball court, but he also _______s after he's benched. as if he's prode of causing such turmoils. In fact,although he's a great player, the coach is pondering kicking...
*February 13, 2013*

**English**

The little girl was so___ after her illness that her parents carfully____(e)d fattening meals that were sure to arouse her appetite. Willie is a ________ on our school. Not only does he start fights with opposing players on the basketball court, but he also _______s after he&#...
*February 13, 2013*

**english**

After the bully struck him, Jules wanted to________ by throwing a rock, but he had______s about doing anything so dangerous.
*February 13, 2013*

**english**

What is the adjective in the sentence "The red truck was parked behind the garage"? A. red B. truck C. behind D. parked
*February 11, 2013*

**math**

6x=-36
*February 9, 2013*

**PHYSICS HELP!!**

3.) Draw a free body diagram of a boat being pulled at an accelerated rated by a truck down a highway.
*February 5, 2013*

**PHYSICS HELP!!**

#2.) Draw a free body diagram for the following situation: a.) A 0.15 kg running shoe is pushed to the right, with a constant velocity, across a wet concrete floor with an applied force of 3.5 N. b.) Calculate the normal force exerted by the concrete onto the running shoe.
*February 5, 2013*

**PHYSICS !!!HELP**

#1.) If the force of gravity on a human is 539 N determine the mass of the human.
*February 5, 2013*

**Math**

An airplane is flying due west at a velocity of 100 m/s. The wind is blowing out of the south at 5 m/s. What is the magnitude of airplane's resultant velocity?
*February 4, 2013*

**Physics**

During the second stage of a rocket launch the rockets upward velocity increases from 980 m/s with an average acceleration of 33 m/s (upward). How long did the acceleration last?
*February 2, 2013*

**Physics**

A boat which travels 100 km (N), then 40 km (N), and finally 80 km (S). The entire trip takes 6.5 hours. A.) Calculate the total displacement of the boat B.) calculate the velocity of the boat
*February 2, 2013*

**Physics **

In the human body, blood travels faster in the largest blood vessel, the aorta than in any other blood vessel. Given an average speed of 30 cm/s, how long would it take the blood to travel 5 cm?
*February 2, 2013*

**Physics**

Classify the following measurements as scalar of vector quantities. A.) 15 s B.) 4.2 m ( up) C.) 100 km/h (S) D.) 2.8 kg
*February 2, 2013*

**Physics**

A cheetah can run with a speed of 29 m/s. Determine the distance travelled by a running cheetah in 8.6 s
*February 2, 2013*

**Physical Sciences**

How do I calculate the initial velocity of a ball if i've only given a maximum height of 12metres above its starting point?
*January 25, 2013*

**engineering**

the pringles manufacturing company tells you that they are switching to a potato supply that has a higher moisture content than those used previously. The new supply, after being mashed an cooked, prior to drying for pringles production, now contains 70% moisture content. they...
*January 17, 2013*

**engineering**

Your friend, a 75 kg mountain climber is suspended from a cliff by a rope. Calculate the tension in the rope, in Newtons, when you lift your friend to safety. If the rope can withstand 1.25 kN of stress per square centimeter of cross-sectional area, what minimum diameter of ...
*January 17, 2013*