Monday

November 24, 2014

November 24, 2014

Total # Posts: 103

**Chemistry**

1) A quantity of 85 mL of .900 M HCl is mixed with 85 mL of .900 M KOH in a constant-pressure calorimeter that has a heat capacity of 325 J/C. If the initial temperatures of both solutions are the same at 18.24 degrees C, what is the final temperature of the mixed solution? 2...
*November 18, 2014*

**math**

sketch the graph of the linear function passing through (-6,5) and (-6,3)
*August 3, 2014*

**Histroy**

You didnt even spell history right and no, it is not D it is... wait... Why would I tell you?
*January 24, 2014*

**Chemistry**

How many moles are contained in 1.20 x 1024 molecules CO2?
*October 2, 2013*

**Physics**

A 39.0 kg box initially at rest is pushed 4.50 m along a rough, horizontal floor with a constant applied horizontal force of 135 N. If the coefficient of friction between box and floor is 0.300, find the following. (a) the work done by the applied force J (b) the increase in ...
*April 28, 2013*

**Math**

Nvm i worked it out it's B
*April 4, 2013*

**Math**

A bag holds 2 yellow, 1 green, and 2 red marbles. If you were to draw a marble from the bag 150 times, and replace it after each draw, how many yellow marbles would you expect to draw? (1 point) A:50 B:60 C:30 D:38 I say it's B or A
*April 4, 2013*

**math word problem**

"Adult tickets are $6, Kids are $3. If the total sales are $585, but only 120 tickets were sold, how many adult tickets were sold? If this was 130 it would be easy: $3+$6 =$9; $585/$9 = 65 tickets. The problem is the question specifies 120 tickets.
*March 25, 2013*

**Chem**

40. If 12.0 gram of O2 is required to inflate a balloon to a certain size at 27 degrees C, what mass of O2 is required to inflate it to the same size and pressure at 81 deg C?
*March 14, 2013*

**History**

What limits on national powers can be derived from the tenth amendment?
*February 19, 2013*

**Chemistry**

How much 2 M KOH must be added to 0.5 L of 0.2 M glycine at pH 8 to bring its pH exactly to 10?
*February 8, 2013*

**Lang Arts**

To India, just say each sentence out with each of the verbs and tell me which one sounds correct.
*January 24, 2013*

**physics**

A boy throws a ball at 5.5 m/s at an angle of 25.4° above the horizontal off a cliff which is 70.8 m high. What angle does the velocity of the ball make with the horizontal 0.78 s after the throw? (make the angle positive if the angle is above the horizontal, and negative ...
*December 6, 2012*

**Chemistry**

Thank you very much!
*July 16, 2012*

**Chemistry**

0.000333 g fluorescein (332.32 g/mol) is dissolved in 225 mL solution of ethanol. The density of ethanol is 0.785 g/mL. What is the concentration of the solution in molarity (M)? How many ppm? I already know that the molarity is 4.45E-6. I just need help on trying to find the ...
*July 16, 2012*

**psychology**

Can the expression on your face produce the emotion which you would like to experience? Explain. ------ I believe that expression on ourface produce the emotion which we would like to experence. right? even though we are sad inside we tend to be happy. and what is the reason ...
*April 29, 2012*

**Math**

Function rule for x=1,2,3,4 & y=7,7,9,11
*April 26, 2012*

**math**

For small values of h, the function (16+h)^1/4 is best approximately by which of the following? a. 4+h/32 b. 2+h/32 c. h/32 d. 4-h/32 e. 2-h/32
*December 31, 2011*

**pre-cal**

tan((theta/2)+(pi/6))=-1
*July 2, 2011*

**I'M SORRY!!**

That equation didn't come out correctly! It should be: 375/12 = x/7 (It will be in fraction form)DO NOT SOLVE IT BY DIVINDING! THAT WILL NOT WORK! STEP 1: MULTIPLY 375 BY 7 TO GET 2625 STEP 2: MULTIPLY 12 BY X TO GET 12X STEP 3: SET UP YOUR EQUATION EQUATION: 12X=2625 STEP...
*June 7, 2011*

**math**

Cross multiply this equation. You will have: 375 x ---- = --- 12 7 After cross multiplying you will find that on 7 miles of gas you can drive 218 & 3/4 miles.
*June 7, 2011*

**intro to psychology**

I agree too! I used to be Manager at McDonald's and I would see so many obese children-it is the mother/father's responsibility for the well being of their child. I don't think that the fast food chains should be held responsible in the fact of having fat people in...
*June 7, 2011*

**EASY GRAPHING QUESTION**

Difficultly by far! I am taking a 200 question test (which after completed I will graduate high school!) and im down to the last 15 questions-I cannot remember for the life of me how to do these!
*June 7, 2011*

**EASY GRAPHING QUESTION**

Write the equation of a circle with a center at (2.5, –3.5) and a radius of 1.2.
*June 7, 2011*

**EASY GRAPHING QUESTION**

Write the equation of a circle with a center at (15, –35) and a diameter of 100.
*June 7, 2011*

**MATH**

Write the equation of a parabola with a vertex at (-5, 2) and a directrix y = -1.
*June 7, 2011*

**MATH**

What is the equation of the parabola with a directrix at y = 4 and focus (0, -4).
*June 7, 2011*

**MATH**

Triangle DEF is similar to triangle PQR. Side DE measures 3, side EF measures 7 and side FD measures 9. Side PQ measures 5x – 25 and side QR measures 6x + 4. Find the value of x.
*June 7, 2011*

**THANK YOU REINY!**

:-)
*June 7, 2011*

**EASY MATH**

Write the equation of a hyperbola with a center at (-5, -3), vertices at (-5, -5) and (-5, -1) and co-vertices at (-11, -3) and (1, -3).
*June 7, 2011*

**EASY MATH QUESTION**

What is the probability of rolling a 1, 2, 4, 5, or 6 on a six sided dice? MAKE SURE TO READ THE QUESTION CAREFULLY!
*June 7, 2011*

**MATH**

What is the standard deviation of the following data? If necessary, round your answer to two decimal places. 46, 53, 38, 67, 46, 57, 61, 42, 63, 55, 46
*June 7, 2011*

**MATH**

A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a blue marble, replacing it, and then picking a black marble?
*June 7, 2011*

**MATH**

A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a yellow marble, do not replace it, and pick another yellow marble?
*June 7, 2011*

**MATH**

A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a yellow marble, do not replace it, and pick a red marble?
*June 7, 2011*

**THIS IS AN EASY QUESTION!!!**

Thank you Ms. Sue!!! 720 is the correct answer!! You are awesome! :-)
*June 7, 2011*

**THIS IS AN EASY QUESTION!!!**

(too bad I don't know how to solve it!) How many different ways can the letters in the word “square” be arranged?
*June 7, 2011*

**Math**

A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a yellow marble, do not replace it, and pick a red marble?
*June 7, 2011*

**ALGEBRA**

This website has helped me a lot in the past! :-) mathsisfun.c om/algebra/completing-square.html
*June 7, 2011*

**Chemistry**

Density=13.6=9.83/Velocity Velocity=9.83/13.6
*June 7, 2011*

**chemistry**

What temperature is required to produce a carbon dioxide partial pressure of 1.0 ? BaCO3¡êBaO + CO2
*March 19, 2011*

**Chemistry/Elements**

What is needed to have Nitrogen and Lithium react?
*March 17, 2011*

**College Algebra**

Carbon-14 Dating. Only 10% of the carbon-14 in a samll wooden bowl remains. How old is the bowl? Half life of carbon is 5700 years.
*December 8, 2010*

**Physics**

nvm. i submit the answer wrong.
*November 15, 2010*

**Physics**

i have the same question, and i got .043 m^3. but it's not the right answer. what did i do wrong? ( i use the same formula too.)
*November 15, 2010*

**gen Chem**

I've attempted this problem but not sure if i'm on the right track. Use the enthalpy diagram provided above and apply Hess’s Law to determine the standard enthalpy of formation for C12O36H20N12 (s) using the results from part (a) and the following values: The ...
*October 26, 2010*

**science**

how do bacterial plasmids relate to resistance and how do they relate to genetic engineering. i am very stuck and i need help please
*October 17, 2010*

**11th grade**

how do bacterial plasmids relate to resistance and how do they relate to genetic engineering. i am very syuck and i need help please
*October 17, 2010*

**Math**

A square of area 2 is inscribed in a circle. What is the area of the circle?
*July 7, 2010*

**Math**

At Harry's Discount Hardware everything is sold for 20% less than the price marked. If Harry buys tool kits for $80, what price should he mark them if he wants to make a 20% profit on his cost?
*July 4, 2010*

**science**

What is blood made of?
*June 14, 2010*

**Math**

The scale of map is 1:20000. Find the area on the map which represents 124km^2
*June 3, 2010*

**Math**

The scale of map is 1:20000. Find the area on the map which represents 124km^2
*June 2, 2010*

**Algebra II**

yes this is exactly how you do it
*June 2, 2010*

**Computer Science**

What is a database management system? What are it's advantages over conventional file processing system?
*June 1, 2010*

**physics**

Use the formula for speed and that is speed=distance/time 27cm/10sec 2.7cm/sec Therefore we know that the speed of the bee is 2.7cm per second
*June 1, 2010*

**math**

I am sure but I think you typed in the equation wrong. Please check
*May 31, 2010*

**Math**

Mary's age is 2/3 that of peter's. Two years ago Mary's age was 1/2 of what Peter's age will be in 5 year's time. How old is peter now?
*May 31, 2010*

**Physics**

Why does a rubbed balloon stick to the wall?
*May 27, 2010*

**Math**

A mother is 21 years older than her new born daughter. How old will the daughter be when her age is 1/4 of her mother's?
*May 27, 2010*

**Math**

How would I make z the subject of the formulae: x=y(z-y)/z
*May 27, 2010*

**Computer Science**

What do you understand by life cycle of software development? Explain briefly the various stages of software development life-cycle.
*May 25, 2010*

**Computer Science**

What do you understand by life cycle of software development? Explain briefly the various stages of software development life-cycle.
*May 25, 2010*

**Computer Science**

What do you understand by life cycle of software development? Explain briefly the various stages of software development life-cycle.
*May 25, 2010*

**Math**

how would i express the following fraction with a single denominator e-4/5 +1
*May 22, 2010*

**Math**

How do I solve this equation 7x^3+21x^2=0
*May 19, 2010*

**Chemistry**

Q: How is boiling different from sublimation?
*May 19, 2010*

**Chemistry**

Q: How is melting different from evaporation?
*May 19, 2010*

**Math**

How do I solve this equation 3d-81d^2=0
*May 19, 2010*

**Math**

How do I solve this simultaneous equation 3x-2y=5 (1) 2y-5x=9 (2) I managed to find the value of x and that is -7 but I am having problems to substitute it's value in equation (1)
*May 16, 2010*

**IGCSE**

Is it possible to take igcse examinations in America?
*May 16, 2010*

**History**

Where can i find info on china and japan during 18th to 19th century.
*May 10, 2010*

**Math**

How do I solve this equation 4n^2-25=0
*April 30, 2010*

**health**

In terms of decsion making sequences, how would you explain and describe : A. The 25-year-old, healthy worker who sees that sam physician for minor medial needs?
*April 5, 2010*

**Economics**

How is it possible to study igcse curriculum in America?
*March 17, 2010*

**finance**

Thompson stores is considering a project that has the following cash flow data. What is the project's IRR. Note that a project's projected IRR can be less than the WACC and even negative, in which case it wll be rejected. Year 0 ($1,000), year 1 $300, year 2 $295, year...
*February 6, 2010*

**PHYSICS**

Dude, you might want to convert your units before anything else .. M is always in kg not g. Your distance should always be in m not cm.
*January 31, 2010*

**Physics**

A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the end of the slide traveling horizontally. One person hits the water 5.00 m from the end of the slide in a time of 1.000 s after leaving the slide. Ignoring friction and air ...
*October 26, 2009*

**English**

I have to write a paper on the Pseudo-Modern movement and how it relates to movie, music, artwork, an article, and a 21st century. I can't find an example for each of these cases.
*May 17, 2009*

**Calc**

ok thanks alot for clearing it up
*March 15, 2009*

**Calc**

Air is being pumped into a spherical balloon so that its volume increases at a rate of 90{cm}^3/s. How fast is the surface area of the balloon increasing when its radius is 7{cm}? Recall that a ball of radius r has volume \displaystyle V={4}/{3}pie r^3 and surface area S=4\pi r^2
*March 15, 2009*

**math**

explain how you know that 5.5 is to the right of 5 1/4 on the number line
*February 25, 2009*

**math riddle ALGEBRA WITH PIZZAZZ**

Oh-Lay
*September 14, 2008*

**Math!**

A rectangle is 15cm x 12cm. If the length is reduced by R cm and its width is increased by R cm. Its area is reduced by 4cm^2.
*August 23, 2008*

**business**

What are the benefits associated with quality awards!? please could someone help me! cheers!
*January 28, 2008*

**science**

how much water does the usa use yearly
*October 1, 2007*

**math**

x^3-6x^2>0 answer in interval notation
*September 26, 2007*

**math**

x^3-6x^2>0 anser in interval notation
*September 26, 2007*

**math**

x^3-6x^2>0 anser in interval notation
*September 26, 2007*

**algeb collage**

solve the inequality,express using interval notation x3-5x2-14x>0
*September 26, 2007*

**economics...please help!**

right must have a price for a demand curve.
*September 26, 2007*

**matttth!**

y=x-10
*September 25, 2007*

**Math**

Im not one of those experts doing this, but don't you have a calculator? Anyways there are sites that help: w w w. quickmath . c o m (no spaces) Sometimes I goof on simple algebra problems and I use their equation solver to fix mistakes, etc.... use it and plug in your ...
*August 27, 2007*

**Math**

and yes your answer is correct.
*August 27, 2007*

**Math**

its just like basic algebra if you were to take x^2/x what would you get? just x ^__^
*August 27, 2007*

**Math**

Eh, this is just a term of speech to denote different times. For instance, an hour is 60 minutes right? Well, if you broke it into 4 quarters it would be 15 mins each, so when someone says its "Quarter to", that means its 15 minutes away from being that hour. Example...
*August 27, 2007*

**math**

good lord, use google and be self reliant.......
*August 26, 2007*

**english**

^^^^^^^^^^^^^^^^^^^^^^^^^^ She should have wrote: "No, judges should not be....... MISTAKE PWEnd
*August 26, 2007*

**math**

write the following as a rate in lowest terms $402 for 18 rolls of film To find the rate for one roll of film, divide $402 by 18.
*August 21, 2007*

**math**

it is cross math (like sudouk) six rows across and six rows down 1st row has empty box, +, empty box, + box =6 this row is across 2nd row has x blacked out box, +, blacked out box, x, blacked out box this row is across 3rd row across is empty box, +, empty box,/ (division sign...
*March 12, 2007*