Monday
April 27, 2015

Posts by Michelle


Total # Posts: 1,734

Chemistry
Which statement about resonance structures is TRUE: 1) There can never be more than two resonance structures for any molecule. 2) Only ionic compounds use resonance structures 3) The real structure of a molecule is an average or hybrid of the resonance structures 4) Resonance ...
July 19, 2013

finance
Tangshan Mining is considering issuing long-term debt. The debt would have a 30 year maturity and a 12 percent coupon rate and make semiannual coupon payments. In order to sell the issue, the bonds must be underpriced at a discount of 2.5 percent of face value. In addition, ...
July 15, 2013

leadership
Prior to the industrial revolution the study of leadership relied on a scientific studies b. intuition and description c. case analyses d. the trait approach to understand leaders
July 13, 2013

chemistry
In my experiments I mixed different ratios of CuSO4 and NaS. The ratio in which I had the greatest amount of precipitate was when I mixed 3mL CuSO4 : 3mL NaS. Now my question: What is indicated by the maximum amount of precipitate...? Thanks in advance.
July 10, 2013

Com200
One reason language is so powerful is that it is the means by which you construct your reality. T or F I believe the answer is true.
July 10, 2013

Chemistry
Calculate the ph of a buffer made from 0.25 m NH4Cl and 0.42 M NH3. Kb= 1.8 x 10^-5
July 10, 2013

science
give the value of acceleration due to gravity
July 9, 2013

chemistry
What are the spectator ions in the following complete ionic equation: Ba2+(aq)+2I−(aq)+2Na+(aq)+SO2−4(aq)→BaSO4(s)+2I−(aq)+2Na+(aq). Thank you so much!!!
July 8, 2013

chemistry
Ba2+(aq)+2I−(aq)+2Na+(aq)+SO2−4(aq)→BaSO4(s)+2I−(aq)+2Na+(aq)
July 8, 2013

math
how do you factor this: 5p + 15q
June 28, 2013

Math
Find f(a), f(a + h), and the difference quotient f(a + h) − f(a) ------------------ h , where h ≠ 0. f(x) = 7x^3 f(a)= f(a + h) = f(a + h) − f(a) ----------------- = h
June 13, 2013

Math
Find f(a), f(a + h), and the difference quotient f(a + h) − f(a) ------------------ h , where h ≠ 0. f(x) = 4 − 6x + 7x2 f(a)= f(a + h) = f(a + h) − f(a) ----------------- = h
June 13, 2013

math
Find f(a), f(a + h), and the difference quotient f(a + h) − f(a) ------------------ h , where h ≠ 0. f(x) = 2x/x-7 f(a)= f(a + h) = f(a + h) − f(a) ----------------- = h
June 13, 2013

math
Find f(a), f(a + h), and the difference quotient f(a + h) − f(a) ------------------ h , where h ≠ 0. f(x) = x/x+6 f(a)= f(a + h) = f(a + h) − f(a) ----------------- = h
June 13, 2013

MAth
Find f(a), f(a + h), and the difference quotient f(a + h) − f(a) ------------------ h , where h ≠ 0. f(x) = 2/x+5 f(a)= f(a + h) = f(a + h) − f(a) ----------------- = h
June 13, 2013

Math
Find f(a), f(a + h), and the difference quotient f(a + h) − f(a) ------------------ h , where h ≠ 0. f(x) = 17 f(a)= f(a + h) = f(a + h) − f(a) ----------------- = h
June 13, 2013

math
Find f(a), f(a + h), and the difference quotient f(a + h) − f(a) ------------------ h , where h ≠ 0. f(x) = x^2+7 f(a)= f(a + h) = f(a + h) − f(a) ----------------- = h
June 13, 2013

mah
Find f(a), f(a + h), and the difference quotient f(a + h) − f(a) ------------------ h , where h ≠ 0. f(x) = 6x + 7 f(a)= f(a + h) = f(a + h) − f(a) ----------------- = h
June 13, 2013

Physics
If an object on Pluto has a mass of 10 kg and a weight of 6.6 N, what is the acceleration due to gravity at its location?
June 11, 2013

Algebra
The work and solution to: Stefan is bicycling on a bike trail at an average of 10 miles per hour. Erik starts bicycling on the same trail 30 minutes later at 16 miles per hour. How long will it take Erik to pass Stefan?
May 29, 2013

language (sentence fluency)
D, read them aloud to make it easier
May 28, 2013

Math
(1/2)2+1/2* 2 4/5
May 28, 2013

physics
A 156-kg coil of sheet steel is 0.80 mm thick and 50 cm wide. How long is the steel in the coil?
May 26, 2013

world geography
commercial areas
May 19, 2013

Algebra 2
I need help trying to solve trigonometric identity problems I just need help if someone could break it down step by step how to solve for: if cos of theta is -3/5 find csc of theta
May 9, 2013

CHEM
How many liters of O2 will react with 100 liters of H2 according to the gas phase reaction: O2 + 2H2 ------2H2O
May 3, 2013

Algebra 2
2. The lengths of boats in a harbor, in feet, are listed below. 17, 16, 56, 50, 14, 30 12, 33, 82, 16, 10, 52 25, 25, 19, 75, 24, 12 30, 12, 20, 38, 26, 36 33, 24, 18, 26, 40, 40 a. Make a frequency table for the data set. Use 5–14 as the first class interval. b. Use the ...
May 3, 2013

pre calculus
use the rational zeros theorem to find all the real zeros of the polynomial function. use the zeros to factor f over the real numbers: f(x)=x^4+2x^3-7x^2-8x+12 I am totally lost, please help?
April 29, 2013

Chemistry
The second one you had described turned out to be the answer.
April 21, 2013

Chemistry
Write an equation that represents how dihydrogen phosphate ion (H2PO4-) behaves as an Arrhenius acid. ( Be sure to include the correct charges for ions.)
April 21, 2013

Chemistry
Write an equation showing that calcium hydroxide acts as an Arrhenius base in water. **(I'm not sure where to start or how to go about this question)
April 21, 2013

Chemistry
I have come up with a product of HCl_2O^+ + )H^- But that wasn't correct neither was HClO^+ + OH^-
April 21, 2013

Chemistry
Write the product for the reaction when dichlorine oxide (Cl_2O) reacts with water (the product will have only one equivalent of chlorine in it).
April 21, 2013

Chemistry
A 19.9mL volume of a hydrochloric acid solution reacts completely with a solid sample of magnesium carbonate, producing 183mL of CO2 that is collected over water at 24.0 degrees C and 738 torr total pressure. The vapor pressure for water at 24.0 degrees C is 22.39 mmHg. What ...
April 18, 2013

english
Select the gerund phrase in the sentence below. Then, determine the noun function of the gerund. Writing a research paper sounds difficult.
April 18, 2013

social studies
john cabot laid claim to the newfoundland region of canada for______ in 1497.
April 7, 2013

Earth science
Waste produced by people along the East Coast of the United States has been dumped into the Atlantic Ocean where it is distributed by surface ocean currents. Which coastal area is most likely to become polluted by this waste?
April 2, 2013

Statistics
Two cards are drawn from an ordinary deck of cards, and the first is not replaced before the second is drawn. What is the probability that one card is an ace and the other is a king
April 2, 2013

Biology
I'm doing a lab for gel electrophoresis and we added the digests in the wells of the agarose gel Lane 2 – λ Hind III (a standard) Lane 4 – Tube 1 Lane 5 – Tube 2 Lane 6 – Tube 3 Lane 7 – Tube 4 Now will DNA in tube 1 which only has dh20, 10x ...
April 2, 2013

pre calculus
steve....that site isn't working for me! Nicole....what do I do once I evaluate 1/121x?
April 2, 2013

pre calculus
2. Graph the following function using transformations. Be sure to graph all of the stages on one graph. State the domain and range. y= -2 lxl +2 For example, if you were asked to graph y= x^2 + 1 using transformations, you would show the graph of y= x^2 and the graph shifted ...
April 2, 2013

Chemistry
which molar mass do you use? pb(OH)2 or pb2+?
April 1, 2013

Physics
Question 2. 3 Consider a box that explodes into two pieces while moving with Fig. 9-24 a constant positive velocity along an x axis. If one piece, with mass : m1, ends up with positive velocity v1, then the second piece, with : mass m2, could end up with (a) a positive ...
April 1, 2013

Science Physics
So weight is mass times gravity On earth, w(12N) = m*10m/s2. Solve for mass. Mass= 1.2N Use that to find mars' gravity. 4.8= (1.2)*g Solve for g. G= 4m/s2
April 1, 2013

Math
1mile * $2.25= $2.25 Remaining miles are 4.2 which is 42 tenths of miles. 42*.15= $6.30 Total for ride is 6.30 + 2.25= $8.55 He paid $10, so 10-8.55=$ 1.45 which is the change or can be called the tip. 2trillion = 2,000,000,000,000 750 billion= 750,000,000,000 Subtract 2,000,...
April 1, 2013

Math: Finding m<A
ABC~DEF m<B = 25', m<D = 45', m<E = 25' How do find m<A?
March 29, 2013

Geoometry Help: Find EF
Thank you so much. Saved me from a big mistake :)
March 29, 2013

Geoometry Help: Find EF
ABC~DEF AB = 36, BC = 24, DE = 48 m<B = 110', m<E = 110' EF = ? I think it's 68. Yes? Or is something else?
March 29, 2013

chemistry
What will be the fastest reaction if a strong base, such as sodamide, reacts with a secondary alcohol, such as (2S)-butanol? a) deprotonation of the alcohol b) substitution with racemization of stereochemistry c) elimination to form the more substituted alkene d) substitution ...
March 29, 2013

achieving academic execellence
Becoming a discerning consumer of research is something you can achieve be practicing good research skills and using your A. critical thinking B. education C. resources D. college library
March 26, 2013

chemistry
provide the appropriate IUPAC name for the following alcohol. designate e or z 8 carbon chain double bonds between 4 and 5 and 6 and 7 methyl group on 6 OH on the second carbon [the only hint i got from this homework is to begin my answer with octadien-2-ol. can someone help ...
March 25, 2013

chemistry quick question
i just realized after entering my question my structure did not stay the way I wanted it to. the CH2 and OH are supposed to be over the 4th carbon in the chain and the CH3 is supposed to be under the 3rd.
March 25, 2013

chemistry quick question
I need help with something and can't find this anywhere online. my structure looks like this OH CH2 CH3CH2CH2CHCHCH2CH3 CH3 So that OH looks like it is on a ethyl group. I need to write the IUPAC name and I wrote 3-methyl-4-heptanol but realized my mistake as that would ...
March 25, 2013

organic chemistry
thank you for helping me, but since this question totally confuses me how did you get to this answer?
March 21, 2013

organic chemistry
can anyone help me please?
March 21, 2013

organic chemistry
which of the following represents the best strategy for synthesizing 2-butanol, CH3CH2CH(OH)CH3 a) CH3CH=CHCH3 + [H30]+ b) CH3CH2C (triple bond) CH + [H3O]+ c) CH3CH=CH2+ [CH3OH2]+ d) CH3C (triple bond)CCH3 + [H3O]+
March 21, 2013

Speed'Distance'Time
Determine the time taken when, distance is 7150 km and speed is 780 km/hr.
March 19, 2013

Speed'Distance'Time
Find out the distance covered when, speed is 960 km/hour and time is 1 hour 50 minutes.
March 19, 2013

math
My ass
March 17, 2013

Physics
A 500 kg elevator starts from rest. It moves upward for 4.00 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. (a) What is the average power of the elevator motor during this period? (b) How does this power compare with the motor power when the ...
March 16, 2013

Physics
Sewage at a certain pumping station is raised vertically by 5.57 m at the rate of 1 860 000 liters each day. The sewage, of density 1 050 kg/m3, enters and leaves the pump at atmospheric pressure and through pipes of equal diameter. (a) Find the output mechanical power of the ...
March 16, 2013

math
Earth's mass, in kilograms, is 5.97x10^24. the moon's mass is 7.34x10^22. How many times greater is Earth's mass (in scientific notation)?
March 14, 2013

Math
A backpacking team is hiking At an average speed of 2 1/2 miles per hour. At that rate, how long will it take for a hike of 8 3/4 mi?
March 8, 2013

Math
55 1/2
March 8, 2013

Math
Karina earned $60 from her part time job. She spent 3/10 of it on food and 1/4 of it on music. How much money does she have left?
March 8, 2013

Math
32
March 8, 2013

Math
A DVD case is 9/16 in. Thick. How many of these cases will fit on a shelf that is 1 1/2 ft wide
March 8, 2013

Math
A DVD case is 9/16 in. Thick. How many of these cases will fit on a shelf that is 1 1/2 ft wide?
March 8, 2013

Math
A new section of freeway will be 8 1/2 mi long. During the first month of construction, 2 7/10 mi were built. During the second month, 3 3/5 mi were built. How many more miles were left to build?
March 8, 2013

Math
2 1/5
March 8, 2013

Math
6 2/5
March 8, 2013

Math
Mr.Quakers science class has a 16 gallon aquarium that is 3/5 full. How much water is needed to fill it?
March 8, 2013

Business Statistics
1.  Suppose that the mean of the annual return for common stocks from 1950 to 2012 was 9.4%, and the standard deviation of the annual return was 17.5%.  Suppose also that during the same 62-year time span, the mean of the annual return for long-term government bonds ...
March 6, 2013

Chemistry
Ammonia is used as a fertilizer throughout the world. It is often produced by reacting nitrogen gas with hydrogen gas in a synthesis reaction. How much ammonia in grams can be produced from 9207 grams of nitrogen and 44 000 L of hydrogen?
March 4, 2013

Chemistry
Answer had to be expressed as just as an isotope so it is **108/48Cd DrBob222 Can you explain how you got the 48 though? Where did the other proton come in when you just added to the mass?
March 1, 2013

Chemistry
I was thinking of something like this? (I'm not sure how to approach this problem): 108/47Ag ---> 107/47Ag + 1/0n then, 108/46Pd ---> 108/47Ag + 0/-1e
March 1, 2013

Chemistry
When silver-107 is bombarded with a neutron, a different isotope of silver forms and then undergoes beta decay. What is the final product? (My Hints: Write two separate nuclear equations.)
March 1, 2013

Chemistry
**241/95Am ----> 237/93Np + 4/2He Is the correct answer indeed. I was confused about the part where it was just talking about subatomic particles and thought I wasn't adding an element to balance the equation but neutrons. Thank you!
March 1, 2013

Chemistry
There are several technological applications for the transuranium elements (Z > 92). An important one is in smoke detectors, which can use the decay of a tiny amount of americium-241 to neptunium-237.What subatomic particle is emitted from that decay process? Write a ...
March 1, 2013

Chemistry
75.7 days
March 1, 2013

Chemistry
Radium-223 has a half-life of 11.4 days.Approximately how long would it take for the activity of a sample of Radium-223 to decrease to 1.00% of its initial value?
March 1, 2013

Pre-Calculus
The stopping distance D of a car after the brakes have been applied varies directly as the square of the speed s. A certain car traveling at 70 mi/h can stop in 343 ft. What is the maximum speed it can be traveling if it needs to stop in 160 ft?
February 26, 2013

college physics
You are in the lab with a 10 V battery. You have a 10 W light bulb and you want to put 0.75 A of current through the light bulb and 7.5 V across the light bulb. This will allow the light bulb to have a brightness proportional to 5.625 W. Assuming any resistors that you need, ...
February 26, 2013

Math
Denna bought a bag of jelly beans. 1/3 are pink and 1/6 are blue. The rest are green. How many are green?
February 25, 2013

Physics
A thundercloud has an electric charge of 43.2 C near the top of the cloud and -38.7 C near the bottom of the cloud. The magnitude of the electric force between these two charges is 3.95 x 106 N. What is the average separation between these charges? (kc = 8.99 ×109 N &#...
February 20, 2013

math
gfrtyyngjtfghdyhjhv ndfhd,bbgrtf
February 18, 2013

Math
If the product of four tenths and six tenths is subtracted from the sum of four tenths and six tenths, what is the difference?
January 30, 2013

math 121
jennifer is asked to complete 5 of the 7 essay questions on her literature exam how many choices does jennifer have?
January 28, 2013

Engineering Math
sorry didn't mean to lol but it is lol
January 28, 2013

Engineering Math
lol
January 28, 2013

physics
Suppose a 28.5 kg object is moving at 38.4 m/s along the x-axis just before it strikes a stationary 13.0 kg object. After the collision, the 28.5 kg object is moving with a velocity of 20.0 m/s at an angle of 5.79 degrees relative to the x-axis. What is the magnitude of the ...
January 25, 2013

Chemistry
What is the density, in grams per liter, of N subscript 2 gas at STP
January 24, 2013

General math
7t-6=104
January 24, 2013

mt450
need to focus on the main critical elements of simulation
January 22, 2013

mt450
Now that you have turned in your Simulation Final Project paper, the next step is to turn in your PowerPoint presentation of it. In the workplace, presentations like this play a key part in conveying marketing plans. Presentation requirements: • A minimum of 8 slides and ...
January 22, 2013

Algebra
Thanks. I figuired out the working, but not sure how to use the Let statement. Would it be correct to say Let A = original scholarship amount A = 1-1/3 -1/4-1/4 x72,000 A = 1/6 x 72 = 432,000
January 10, 2013

Algebra
Mary, Margaret, Ron and Nick are to share a sholarship. Ron receives 1/3 of the scholarship; Nick gets 1/4 of the scholarship; Mary receives the same as Nick, and Margaret receives $72,000. Find each person's share in the scholarship as well as the original scholarship ...
January 10, 2013

literature
In "Life without Principle," Thoreau writes, "If my wants should be much increased, the labor required to supply them would become a drudgery." What does this statement mean?
December 12, 2012

Chemistry
If 355 g Al(NO3)3 reacts with an excess of K2CrO4, how many moles of KNO3 would be produced?
December 12, 2012

chemistry
3.50 mol Al(NO3)3 reacts with 5.00 mols K2CrO4, the total number of moles of Al2(CrO4)3 and KNO3 would be? Here is the equation if it's needed. 2 Al(NO3)3(aq) + 3 K2CrO4(aq) → Al2(CrO4)3(s) + 6 KNO3(aq)
December 12, 2012

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