Tuesday

July 7, 2015

July 7, 2015

Total # Posts: 349

**Chemistry**

Ethanol is the active ingredient of alcoholic beverages. It is also s a possible replacement for gasoline. The complete combustion of ethanol forms carbon dioxide and water. CH3CH2OH + O2 => CO2 + H2O Balance the equation. What mass of carbon dioxide is formed by the ...
*June 18, 2015*

**MATH PLEASE HELP THIS IS A TEST!!!!!!!!!!!!!!!!**

okay sorry write teacher okay this is what I thought 1. A 2. B 3.B 4.D 5. A 6.C
*May 14, 2015*

**MATH PLEASE HELP THIS IS A TEST!!!!!!!!!!!!!!!!**

Which events are NOT independent? Landing on heads after tossing a coin and rolling a 3 on a 6- sided number cube Choosing a marble from a jar and landing on tails after tossing a coin Choosing a 5 from a deck of cards replacing it and then choosing an ace as the second card ...
*May 14, 2015*

**MATH PLEASE HELP**

A single, standard number cube is tossed. What is the probability of getting a number other than 6? A. 1 B. 1÷3 C. 5÷6 D. 1÷6 A standard number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number less than 4 A. 1 ÷ ...
*May 14, 2015*

**Vacation**

okay thanks Ms. Sue :-)
*May 12, 2015*

**Vacation**

what should I pack to the grand canyon? why is the grand canyon a trip? please answer these are an essay to complete & if I don't pass I cant go to 7th grade thanks
*May 12, 2015*

**Math**

whats the answer is it 1?
*April 30, 2015*

**Math**

so I don't get it
*April 30, 2015*

**Math**

but I need someone to check my answers
*April 30, 2015*

**Math**

the first one b the second one c
*April 30, 2015*

**Math **

You and a friend go to the movies and split the cost of the movie tickets and snacks. You pay the bill. You tell your friend he owes only $9 because you owed him $4 from the last time you went to the movies. How much was the total bill? Let b represent the total bill. Identify...
*April 30, 2015*

**MATH**

1.) solve the equation 2 x - 3 = 15 A. x=6 B. x=9 C. x=24 D. x = 36 2.) Solve the equation r - 4 = 11 --- 3 r = 45 r = 35 r= 33 r = 28 3.) solve the equation 7+ 3 m = 28 m = 18 m = 11 2 divide by 3 m = 9 m = 7 PLEASE HELP MS. SUE
*April 30, 2015*

**SS PANAMA QUIZ**

No Problem :-) anytime
*April 29, 2015*

**SS PANAMA QUIZ**

here are the correct answers.... 1.) geography 2.)Colombia 3.) B
*April 29, 2015*

**Geography **

I have one question what's money sense Ms. Sue please help me
*April 28, 2015*

**Math**

thanks Ms. Sue :-)
*April 28, 2015*

**Math**

PLEASE HELP!!!!!!!!!!!!!!
*April 28, 2015*

**Math**

The cost of a student ticket to the school play is $7. Write an equation that correctly relates the cost, c, for a particular number of student tickets, s, purchased. Identify the independent and dependent variables.
*April 28, 2015*

**Chemistry**

I got to agree that it is 0.0072
*April 20, 2015*

**english**

Whats the answers????
*April 20, 2015*

**Math**

My answers are 1. A 2. c 3. A
*April 20, 2015*

**Math **

Which of the following is a true statement? A. -9 > -4 B. | -10 | > |2| C. | -3| < |1| D. 6< - 12 Compare using <,>, or = -2 ----- -4 A. < B.> C. = Compare using <,>, or = -| 2-5| ----- (8 – 11) A. < B. > C = PLEASE HELP!!!
*April 20, 2015*

**Science**

thank you enjoy your weekend Ms. Sue bye :-)
*April 17, 2015*

**Science**

"Earth's energy sources include both renewable and nonrenewable resources. Name at least three sources of energy that could be used in your house. Then describe the ideal source of energy for generating most of your home's electricity, and explain why you chose ...
*April 17, 2015*

**Science**

I cant put the pic because it wont let me :-(
*April 17, 2015*

**Science**

Every individual, including young people, can make decisions to use resources wisely. Use the terms reduce, reuse, and recycle to explain how the students in the image can help minimize solid waste. PLEASE HELP!!!!!!
*April 17, 2015*

**Science**

okay have a great T.G.I.F Ms. Sue bye :-)
*April 17, 2015*

**Science**

thanks but is it a?
*April 17, 2015*

**Science**

why is it important biodiversity? A. preservation of biodiversity prevents the extinction of species B. preservation of biodiversity increases the amount of fossil fuels formed in a shorter period of time. c. preservation of biodiversity disturbs the balance in ecosystems D. ...
*April 17, 2015*

**Science**

thank you again Ms. Sue have a wonderful day :-)
*April 16, 2015*

**Science**

I need help with these question please. 1. how can you renewable heating & cooling? 2. how can you renewable hot water? 3. how can you renewable electricity?
*April 16, 2015*

**Science**

then how can you renewable heating or cooling?
*April 16, 2015*

**Science**

well im learning about sources of energy & how you can reuse it.
*April 16, 2015*

**Science**

Problem How could renewable energy sources be used in a house? Devise a Plan 1. Consider what you learned about renewable energy sources. Use what you learned to design a house that operates entirely on renewable energy sources. Focus on three major needs: (1) heating and ...
*April 16, 2015*

**History**

can someone help??????
*April 15, 2015*

**History**

I need help. :-(
*April 15, 2015*

**History**

oh I have the map & I goggle them but nothing came up.
*April 15, 2015*

**History**

okay I hope someone does. so how's your day?
*April 15, 2015*

**History**

Which city was located in the Persian Empire? A. Baghdad B. Jerusalem C. Alexandria D. Makkah Which of the following was located northeast of the Arabian Peninsula? A. Persian Empire B. Byzantine Empire C. Roman Empire D. Sahara What does Islam mean? A. Surrender to the will ...
*April 15, 2015*

**History**

thank you so much I like jiskha homework help more than open study because they erased my profile. but thank you and have a wonderful day Write teacher.
*April 15, 2015*

**History**

Muslims must A. pray eight times a day B. save all their money C. fulfill the five pillars of Islam D. live in Makah PLEASE HELP........
*April 15, 2015*

**chemistry**

what are the favored geometrical arrangements for ABn molecules for which the A atom has 2, 3, 4, 5 and 6 pairs of electrons in in its valence shell?'
*April 14, 2015*

**math**

The Least Common Multiple of two numbers is 60, and one of the numbers is 7 less than the other number. What are the numbers? Justify your answer.
*September 22, 2014*

**Math**

You have a wireless phone plan that costs $25 per month. You must also pay $.10 per minute for each minute over 500 min. you phone bill was more than $30 last month. Write an inequality to represent the number of minutes m you spent on the phone last month. Suppose you use 525...
*June 8, 2014*

**Math**

The Cupcake Cafe makes 4 1/2 times as much revenue on doughnuts as muffins. If the total sales was $44,000 for May, what dollar amount of each was sold?
*September 14, 2013*

**microeconomics**

The basis of the argument favoring government intervention to correct informational and rationality problems is that:
*August 8, 2013*

**trig**

A barge is pulled by two tugboats. The first tugboat is traveling at a speed of 12 knots with heading 140°, and the second tugboat is traveling at a speed of 17 knots with heading 200°. Find the resulting speed and direction of the barge. (Round your answers to the ...
*July 21, 2013*

**Chemistry**

4.7 grams per 100g of H2O
*May 3, 2013*

**hastings**

In a heating curve, when is the temperature constant?
*April 8, 2013*

**Physics**

If the gas in a container absorbs 203 J of heat, has 100 J of work done on it, then does 59 J of work, what is the increase in the internal energy of the gas? Answer in units of J
*February 7, 2013*

**science**

Tiffany you posted this question a while back ago and it was for a job. I'm doing the same thing and I was just wondering if it was a scam BANK RECONCILIATION ============================================== On Aug 14th, One of our Partner's ( Compuville ) cash book ...
*December 19, 2012*

**Physics**

A rock dropped into a pond produces a wave that takes 14.6 s to reach the opposite shore,21.1 m away. The distance between consecutive crests of the wave is 5.3 m. What is the frequency of the wave?
*December 4, 2012*

**Math**

so its 1/3??????
*November 8, 2012*

**Math**

your answer is 9/10 :) enjoy
*November 8, 2012*

**Physics**

Consider a force F = 815 N pulling 3 blocks of masses m1 = 7.94 kg, m2 = 15.3 kg, and m3 = 32.4 kg along a frictionless horizontal surface. Find the acceleration a of the blocks. Answer in units of m/s2.
*October 9, 2012*

**Geometry**

Find the value of each variable and ST if S is between R and T. Draw a picture and solve each. RS=12, ST=2x, RT=34
*September 23, 2012*

**Physics**

A pelican ﬂying along a horizontal path drops a ﬁsh from a height of 4.2 m. The ﬁsh travels 9.1 m horizontally before it hits the water below. What was the pelican’s initial speed? The acceleration of gravity is 9.81 m/s2.
*September 18, 2012*

**Literacy**

Which of the following ways of incorporating an idea from a journal article into your research paper is considered best for expressing that entire idea in your own words? A. quote B. Paraphrase C. Copy and paste D. Summarize
*August 15, 2012*

**Reimbursement Methodologies Final Exam**

Can anyone please help me with Part A with the 1st question: You're the new director of a hospital health information management department. The chief financial officer has hired you for your experties in health care reimbursement and needs to know how your department can ...
*July 20, 2012*

**English**

A more creative or straightforward expressions for The tried and true methods quite often can't be beat.
*June 27, 2012*

**business**

What are the advantages of having an ethics office or officer report to a company’s chief executive officer, the legal department, human resources, or audit? What are the disadvantages?
*May 11, 2012*

**Math**

Lisa can shovel snow from her driveway in 45 minutes. Bill can do the same job in 65 minutes. How long would it take Lisa and Bill to shovel the driveway if they worked together?
*May 10, 2012*

**Physical Science**

What is a nine letter word for the size of a measurement.. and the last letter of the word ends in "E".. Thanks, Priscilla
*May 9, 2012*

**physics**

What is the angular speed in rev/min of the Earth as it orbits around the sun? I'm confused with this problem. I know we have to convert from rad/s to rev/rad to s/min in order to get the units as rev/min. But I don't know what to use for rad/s
*April 17, 2012*

**Calculus I**

ok thank you
*April 10, 2012*

**Calculus I**

Find the derivative ** (sq root) y = (square root) x + (2nd sq root) x + (3rd sq root) x ** All the x's is under three sq roots y' = 1/2(sq rt) x + 1/(sq rt) x + 3/2(sq rt) x Is this right?
*April 10, 2012*

**chemistry - synthesis of aspirin**

wait, i misunderstand. You stated that if there's no H2O present then salicylic acid is the limiting reagent. Therefore salicylic acid number of moles is the same as the number of moles of acetic acid???? If this is so, then the mass of acetic acid would also be 2.005 g, ...
*April 7, 2012*

**chemistry - synthesis of aspirin**

ok therefore, the mass of the aspirin is equal to the mass of the acetic acid since the ratio is 1:1. Right?
*April 7, 2012*

**chemistry - synthesis of aspirin**

This is an experiment for a synthesis of aspirin lab mass of salicylic acid = 2.005 g mass of acetic acid = ? moles of acetic acid = ? volume of acetic anhydride = 4 ml mass of acetic anhydride (Use 1.08 g/ml for the liquid density) = (1.08 g/ml) (4 ml) = 4.32 g moles of ...
*April 7, 2012*

**Probability Distribution**

total amount of balls = 15 red + 19 white = 34 balls 0 - 0/34 = 0 1 - 1/34 2 - 2/34 = 1/17 3 - 3/34
*April 7, 2012*

**chemistry - synthesis of aspirin**

Okay i understand from what you said. But in my lab report, they stated the mass of acetic acid and from that I would have to calculate the number of moles of acetic acid. But since you state acetic acid is just a product should i leave these two questions blank then
*April 7, 2012*

**chemistry - synthesis of aspirin**

wanted to calculate the theoretical and actual yield of aspirin. mass of salicylic acid = 2.005 g But isn't salicylic acid differ. from acetic acid? If so, how do we find the mass of acetic acid in this experiment volume of acetic anhydride = 4 ml mass of acetic anhydride...
*April 7, 2012*

**chemistry - synthesis of aspirin**

wait, I just have one quick question. I realized the equation for this experiment would be C7H6O3 + C4H6O3 ----> C9H8O4 + C2H4O2 BUT... acetic acid's formula is C2H402 in molecular formula. Is the above equation right? Also, I realized after mixing salicylic acid and ...
*April 6, 2012*

**chemistry - synthesis of aspirin**

ok thank you
*April 6, 2012*

**chemistry - synthesis of aspirin**

I wanted to calculate the theoretical and actual yield of aspirin. mass of salicylic acid = 2.005 g But isn't salicylic acid differ. from acetic acid? If so, how do we find the mass of acetic acid in this experiment volume of acetic anhydride = 4 ml mass of acetic ...
*April 6, 2012*

**Chemistry**

ok thank you very much
*March 29, 2012*

**Chemistry**

If its okay, can you show me in detail how to find n2^2 because I have done this three times and I'm still a little confused by this.
*March 29, 2012*

**Chemistry**

Okay, I was solving out this this equation for n2^2 n2^2 = 1(1/n - E/Rh) Is this right?
*March 29, 2012*

**Chemistry**

Calculate the level from which the electron fell, n2, for the hydrogen line you observed. wavelength (lambda) = 400 nm n1 = 2 RH = 2.18 x 10^-18 I keep having trouble with finding n2. Is the above given right to plug in for 1/(lambda) = RH (1/n1^2 - n2^2) thank you for any help
*March 29, 2012*

**Intermediate Algebra**

i = -1 () = sq. root i (24) i(4) + i(6) 2i(6)
*March 29, 2012*

**Calculus I**

thank you very much
*March 21, 2012*

**Calculus I**

Find the derivative of f(x) = sin^2 (e^sin^2 x) I wonder if I'm right F'(x) = 2cos(e^sin^2 x) (sin^2 x e^sin^2 x -1)
*March 21, 2012*

**Grade 11 math**

2. If there's no vertical asympotote, then y = 3x^2 + 5 / x^2 This way, for the denominator it shows there is no vertical asymptote. But when you plug in x = 0 for the numerator it equals 5 as the y-intercept. And since the numerator and denominator both have X^2 then this...
*March 13, 2012*

**Grade 11 math**

1. - Reflection in the y - axis, since - f(x) - Left 2 units - Taken to the power of -2 (i forgot what they called this, i think you should look up this) 2. Is there any vertical asymptote that you have to include in this function
*March 13, 2012*

**Physics**

Two blocks are connected by a string, The smooth inclined surface makes an angle of 35 degrees with the horizontal, and the block on the incline has a mass of 5.7kg. The mass of the hanging block is m=3.2kg. Find the direction and magnitude of the hanging blocks acceleration? ...
*March 13, 2012*

**science**

its lithosphere
*March 5, 2012*

**Chemistry**

ok, thank you very much for your time and patience. I understand, im sorry if I bothered you too much. But thanks a lot.
*March 5, 2012*

**Chemistry**

Wait, im not making sense. I know liters x normality gives you the equivalents of an acid. But are you sure it's not the grams I obtained divided by the equivalents of the acid.
*March 5, 2012*

**Chemistry**

wait, liters x normality = grams because I wanted to find the equivalent wt
*March 5, 2012*

**Chemistry**

I wanted to calculate the average equivalent weight of an unknown acid for an acid-base titration experiment. The mass of the unknown that I had to obtain is 0.2 g and the equivalents of the acid is .001046 L x N. But is this equation right? Does the equivalent mass equal to ...
*March 5, 2012*

**Chemistry**

No, I understand. Thank you very much
*March 3, 2012*

**Chemistry**

I wanted to calculate the normality of the acid and base solutions for a lab. But I'm extremely confused. I know normality is number of equivalents divided by volume in liters. But are we suppose to be given the number of equivalents of HCl and NaOH? Or are we suppose to ...
*March 3, 2012*

**Physics**

The mass of the thread was neglected in the experiment. If this mass were 0.2 gram, estimate the largest error in the acceleration that it might have caused. Could this account for your observed errors?
*February 26, 2012*

**Physics**

I think track B would reach the track first since track A has a dip in the middle.
*February 26, 2012*

**Physics**

The speed of sound is about 340 m/s. Assume that when the motion detector emits an ultrasonic pulse, it must detect the reflected pulse before it can emit its next pulse. Assuming that the length of the air track is about 2 meters, what is the maximum number of pulses per ...
*February 26, 2012*

**Physics**

ok thank you
*February 22, 2012*

**Physics**

In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 4.3 m/s at an angle of 15 degrees below the horizontal. It is released 0.80m above the floor. What horizontal distance does the ball cover before bouncing? (delta)...
*February 22, 2012*

**Physics**

Thank you very much.
*February 19, 2012*

**Physics**

1. While riding on an elevator descending with a constant speed of 1.5 m/s, you accidentally drop a book form under your arm. (a) How long does it take for the book to reach the elevator floor, 1.2 m below your arm? (b) What is your book's speed relative to you when it ...
*February 19, 2012*

**math**

the probability that jim will make 0,1,2,3,4,5 or 6 shots out of six attempted field goals is shown below. what is the probability he will make 5 shots? r= 0,1,2,3,4,5,6 P(r)=.016, .094, .234, .312, .234, .094, .016 possible answers: .094, .312, .234
*February 17, 2012*