Thursday
August 21, 2014

Posts by Jack


Total # Posts: 1,300

Spanish
5. Fill in the blank with the correct form of the verb jugar. yo __________ My Answer: yo juego 6. Fill in the blank with the correct form of the verb jugar. nosotros __________ My Answer: nosotros jugamos 7. Fill in the blank with the correct form of the verb jugar. ellos ...
March 28, 2013

math
1340 UNFAVORABLE
March 28, 2013

Chemistry
#7 -D #8 -B...is that better?
March 28, 2013

Chemistry
you are right I think #3 is B...#4 is A and #5 is A...haven't done 7 and 8 yet...how am I doing?
March 28, 2013

Chemistry
1. Which of the following metals is oxidized by calcium ions? *potassium zinc iron lead 2. The first electrochemical cell was invented by ____. Michael Faraday *Alessandro Volta James Maxwell Benjamin Franklin 3. Why can't a lead storage battery be recharged indefinitely...
March 28, 2013

Chemistry
1. Which metal is the most easily oxidized? A.) highly active metal *B.) moderately active metal C.) slightly active metal D.) an inactive metal 2. What happens in a voltaic cell? *A.) Chemical energy is changed to a electrical energy. B.) Electrical energy is changed to ...
March 27, 2013

Englisj
ok. Thank you.
March 27, 2013

Englisj
1. Which of the following is NOT an example of persuasive writing? a position paper from an elected official a college admissions essay a movie review *a summary of a textbook reading assessment 2. Identify the following as a fact or an opinion: “Video games are too ...
March 27, 2013

Chemistry
did you see that jose?
March 27, 2013

Chemistry
I think I found out that it is A.
March 27, 2013

Algebra
What is the sum of all integer values of n satisfying 1 \leq n \leq 100, such that n^2 - 1 is a product of exactly two distinct prime numbers?
March 26, 2013

Physics/math
Two parallel wires carry 1-A currents in unknown directions. The distance between the wires is 10-cm. What is the magnitude of the magnetic field B in Teslas at a point P located 6-cm away from the axis of one of the wires and 8-cm away from the axis of the other ...
March 25, 2013

Physics/math
Two parallel wires carry 1-A currents in unknown directions. The distance between the wires is 10-cm. What is the magnitude of the magnetic field B in Teslas at a point P located 6-cm away from the axis of one of the wires and 8-cm away from the axis of the other ...
March 25, 2013

Chemistry: check answers
I'm really trying to figure this out. Is it D for number 2 and B for number 3? I know you already explained it once and if i'm wrong, any additional help would be greatly appreciated.
March 22, 2013

Chemistry: check answers
2. B 3. C
March 22, 2013

Chemistry: check answers
Please check. Thank you. 2. What is the reduction half-reaction for the following unbalanced redox equation? Cr2O72– + NH4+ Cr2O3 + N2 A.) Cr2O3 -> Cr2O72– B.) Cr2O72– -> Cr2O3 C.) NH4+ -> N2 D.) N2 -> NH4+ 3. Which oxidation-reduction reactions are ...
March 22, 2013

Chemistry
2. What is the reduction half-reaction for the following unbalanced redox equation? Cr2O72– + NH4+ Cr2O3 + N2 A.) Cr2O3 -> Cr2O7^2– *B.) Cr2O72– -> Cr2O3 C.) NH4+ -> N2 D.) N2 -> NH4+ 3. Which oxidation-reduction reactions are best balanced by the ...
March 22, 2013

chemistry
2. What is the reduction half-reaction for the following unbalanced redox equation? Cr2O72– + NH4+ Cr2O3 + N2 A.) Cr2O3 -> Cr2O7^2– *B.) Cr2O72– -> Cr2O3 C.) NH4+ -> N2 D.) N2 -> NH4+ 3. Which oxidation-reduction reactions are best balanced by the ...
March 22, 2013

Physics
A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum ...
March 22, 2013

Physics
The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s^2? Details and assumptions You may assume the...
March 22, 2013

Spanish
10. Fill in the blank with the correct form of the verb: ellos/salir. Ellos ______ Is it: Ellos salen or Is it: Ellos salieron Thank You.
March 21, 2013

Spanish: Check my answer
10. Fill in the blank with the correct form of the verb: ellos/salir. Ellos ______ Is it: Ellos salen or Is it: Ellos salieron Thank You.
March 21, 2013

Spanish: Translate please
Translate these please: una zanahoria una manzana una uva una fresa una zanahoria una manzana unas uvas una fresa una manzana la lechuga una papa una cebolla el refresco el jugo la leche el té Thank You.
March 21, 2013

Algebra-Knights
I went to the website....maybe I am doing something wrong but it won't bring up the graph - I put in the equation on y1
March 21, 2013

Algebra
Thanks
March 21, 2013

Algebra
it shows y= and then the square root goes over all of 2x+6
March 21, 2013

Algebra
Which graph matches the function: y= square root 2x + 6 How would this look on a graph? Thank You.
March 21, 2013

Algebra: Please help
Thank you for all your help...I appreciate it.
March 21, 2013

Algebra: Please help
So which is it?
March 21, 2013

Algebra: Please help
Solve for B: square root b^4/25 = 4. A.) 2 B.) +/- 5 square root 2 C.) 3 D.) +/- 2 square root 5 I don't know how to do these so please show your work. Thank you.
March 21, 2013

Algebra: check my answer
A right triangle’s legs are 3 and 4 meters long. What is the measure of the angle adjacent to the 4-meter leg to the nearest tenth of a degree? A.) 35.9° B.) 36° *C.) 36.9° d.) 37.5° Thank You.
March 21, 2013

Algebra
solve for x: square root 2x+3 = square root 6x - 1. A.) 1 B.) 2 C.) 3 D.) square root 6 I don't know how to do these so will you please show your work. Thsnk You.
March 21, 2013

chem
pls help
March 20, 2013

chem
For the indicated atom in each of the following molecules or ions, give the number and arrangement of the electron pairs around that atom. (a) As in AsO43- number: arrangement: linear bent trigonal planar square planar tetrahedral (b) Se in SeO42- number: arrangement: linear ...
March 20, 2013

English
Thnak you.
March 20, 2013

English
choose from For example or therefore 1. Most listeners don't simply absord your message of thier own called feedback._______, when you phone a friend to say you'll be late, you may hear,"Hey, you really need to get here on time!" That is feedback. I am a bit ...
March 20, 2013

chem
could u check if im right: a. As in AsO43- for number its 3 arrangement is tetrahedral b. Se in SeO42- # is 2 arrangement is tetrahedral c. S in H2S # is 1 arrangement is linear
March 19, 2013

chem
For the indicated atom in each of the following molecules or ions, give the number and arrangement of the electron pairs around that atom. (a) As in AsO43- number: arrangement: linear bent trigonal planar square planar tetrahedral (b) Se in SeO42- number: arrangement: linear ...
March 19, 2013

Algebra
Please help me. Please show work. What are the domain and range of the function y=2 square root 3x + 4-5? *A.) X >/= -4/3; Y >/=-5 B.) X >/= 4/3; Y >/= 5 C.) X </= -4/3; Y </= -5 D.) X </= 4/3; Y </= 5 Thank You so much.
March 19, 2013

english
Thank You.
March 19, 2013

english
1. Which of the style guides is most focused on professionals who are writing articles for publication? A.) MLA B.) APA *C.)Chicago Thanks.
March 19, 2013

chemistry
Calculate the concentrations of all species in a 0.690 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10–2 and Ka2 = 6.3× 10–8.
March 15, 2013

math
thank you mary
March 7, 2013

math
a square kitchen floor can be exactly covered withe square tiles that are either 9 inches or 15 inches on a side. what is the minimym area in square feet that the kitchen can have? how many of each size tile would be needed to cover the minimum size floor?
March 7, 2013

Geometry
A six foot person is walking away from an 18 foot pole. Express the distance between the pole and the person in terms of the length of the persons shadow.
March 5, 2013

math
A manager of an electronics store takes a random sample of large shipments of circuit boards to determine if he will accept the delivery. he randomly samples 20 boards from a shipment and will reject the delivery if more than 1 circuit board is defective. if the manufacturer ...
March 5, 2013

Chemistry
Hess's law _____. A.) makes it possible to calculate H for complicated chemical reactions B.) states that when you reverse a chemical equation, the sign of H does not change C.) determines the way a calorimeter works D.) describes the vaporization of solids Please help - I...
March 4, 2013

Chemistry
1. Hess's law _____. A.) makes it possible to calculate H for complicated chemical reactions B.) states that when you reverse a chemical equation, the sign of H does not change C.) determines the way a calorimeter works D.) describes the vaporization of solids Please help...
March 4, 2013

finance
if you want to have $7000 in 10 years, how much money must you put in a savings account today? Assume the account pays 4% compounded daily.
March 3, 2013

Algebra 1
And please can you show me all your work.
February 28, 2013

Algebra 1
A ladder is resting against a wall. The top of the ladder touches the wall at a height of 15 feet and the length of the ladder is one foot more than twice the distance from the wall. Find the distance from the wall to the bottom of the ladder. (Hint: Use the Pythagorean ...
February 28, 2013

physics
F is 208.42N normal is 125.14 N
February 27, 2013

Spanish: Please Help
23. Write the correct verb form in the blank: yo/encontrar. yo ___________ (2 points) 24. Write the correct verb form in the blank: ella/cerrar. ella ___________ (2 points) 25. Write the correct verb form in the blank: nosotros/querer. nosotros ___________ (2 points) 26. Write...
February 27, 2013

Spanish: Please Help
I don't know how to do these or I would have given answers or at least a good guess. Thanks.
February 27, 2013

Spanish: Please Help
23. Write the correct verb form in the blank: yo/encontrar. yo ___________ (2 points) 24. Write the correct verb form in the blank: ella/cerrar. ella ___________ (2 points) 25. Write the correct verb form in the blank: nosotros/querer. nosotros ___________ (2 points) 26. Write...
February 27, 2013

Spanish: Please Help (CHECK ANSWERS)
19. Your hermano mayor is A.) younger than you. B.) older than you. *C.) more powerful than you. D.) smarter than you. 20. Your hermana menor is *A.) younger than you. B.) older than you. C.) more powerful than you. D.) smarter than you. Thank You
February 27, 2013

Spanish: Please Help
Thank You. What do the numbered ones say?
February 27, 2013

Spanish: Please Help
I have no idea what the answers are to these. Thank You For questions 10-14, match the family members: A. el hijo de mis tíos B. la hija de mis padre C. la madre de mi padre D. la hermana de mi padre E. la esposa de mi padre 10. mi madre 11. mi tía 12. mi abuela ...
February 27, 2013

Spanish please translate from spanish to english
1.) ¿Cuál es la prima mayor? 2.) ¿Cuál es la prima menor? 3.) Es el doce de mayo. Es el 20 de agosto. Es el primero de diciembre. Es el uno de diciembre. 4.) Tiene doce años. Tienes doce años. Tengo doce años. Thank You so much
February 8, 2013

Please translate from spanish to english
Thank You
February 8, 2013

Please translate from spanish to english
La familia Gutierrez tiene dos hijos. Ramón tiene 15 años. Es el hijo mayor. Su cumpleaños es el veinte de agosto. Rogelio tiene 13 años. Es el hijo menor. El cumpleaños de Rogelio es el 1 de diciembre. Ramón y Rogelio tienen dos ...
February 8, 2013

Spanish
are my answers correct then or are you saying #4 is wrong?
February 7, 2013

Spanish
Thank You
February 7, 2013

Math help
They each brought 7 pets. hope this helps
January 29, 2013

Maths
A bouncy ball bounces 16m on its first bounce and then 8m on the second bounce. Each time it bounces the height halves. How high will the ball bounce on the 10th bounce?
January 29, 2013

Calculus
lim 1/(1+h)^2-1/h h->0 I have 1 as my final answer and was wondering if i was correct
January 28, 2013

Calculus
lim e^(1+h)-e/h h->0
January 28, 2013

science
The XYZ Company makes widgets and sells to a market that is just about to expand after a period of stability. As the year starts, the widgets are manufactured at a cost of $0.75 and sold at a market price of $1.00. In addition, the firm has 1,000 widgets in finished goods ...
January 27, 2013

chemistry
I got a very close answer, I just needed help with the steps, so thank you my friend.
January 22, 2013

chemistry
How much ice is required to cool a 15.0oz drink from 71 F to 34 F, if the heat capacity of the drink is 4.18 J/g*C ? (Assume that the heat transfer is 100% efficient.)
January 22, 2013

Science
Please compare and contrast the electrochemical events involved in the initiation and propagation of an action potential with the electrochemical events involved with the initiation of muscle contraction in skeletal muscle. Be sure to describe the electrochemical changes in ...
January 21, 2013

Calculus 2
A circular plate of radius r feet is submerged vertically in a tank of fluid that weighs w pounds per cubic foot. The center of the circle is k(k>r)feet below the surface of the fluid. Show that the fluid force on the surface of the plate is F=wk(πr^2). How to prove ...
January 18, 2013

coordinate algebra
Jon is flying an airplane.He is currently 3,5000 feet in the air and he is ascending at a rate of 500 feet per minute.How many minutes it will take him to reach a height of 9,000 feet
January 14, 2013

coordinate algebra
Jon is flying an airplane.He is currently 3,5000 feet in the air and he is ascending at a rate of 500 feet per minute.How many minutes it will take him to reach a height of 9,000 feet
January 14, 2013

Math
I am stuck on several probability questions. A spinner that has 15 equal sized sections numbered 1 to 15 is spun twice. What is the probability the spinner lands on an odd number and then on an even number? A. 56/225 B. 169/225 C. 1/15 D. 21/225 I chose A. 56/225 because 8/15 ...
January 11, 2013

chemistry
If 1.00 mole of BrCl is introduced into a 500.0 ml flask, what are the concentrations of Br2, Cl2 and BrCl at equailbrium
January 9, 2013

business analytics
waiting times for 64 randomly selected walk-in customers and determined that their mean waiting time was 15 minutes. Assume that the population standard deviation is 4 minutes. The 90% confidence interval for the population mean of waiting times is
December 27, 2012

geometry
prove KLM=KNM.give reasons
December 13, 2012

statistics
A tobacco company claims that the nicotine content of its "light" cigarettes has a mean of milligrams and a standard deviation of milligrams. What is the probability that randomly selected light cigarettes from this company will have a total combined nicotine content...
December 11, 2012

statistics
A tobacco company claims that the nicotine content of its "light" cigarettes has a mean of milligrams and a standard deviation of milligrams. What is the probability that randomly selected light cigarettes from this company will have a total combined nicotine content...
December 11, 2012

Chemistry
Never mind! I got it! :)
November 30, 2012

Chemistry
Lead(II) oxide from an ore can be reduced to elemental lead by heating in a furnace with carbon. PbO(s) + C(s)= Pb(l) + CO(g) Calculate the expected yield of lead if 90.0 kg of lead oxide is heated with 90.0 kg of carbon.
November 30, 2012

Chemistry
An experiment that led to the formation of the new field of organic chemistry involved the synthesis of urea, CN2H4O, by the controlled reaction of ammonia and carbon dioxide. 2 NH3(g) + CO2(g)= CN2H4O(s) + H2O(l) What is the theoretical yield of urea when 100. g of ammonia is...
November 30, 2012

Chemistry
It is calculated that 0.0191 moles of CO2 are expected from a reaction at 25 degrees C and 1 atm. What volume of CO2 does this represent in cm3? (R = 0.0821 L atm / K / mol)
November 26, 2012

Maths - HELP PLZ
HOW CAN I SOLVE THE INEQUALITY GRAPHICALLY 3X^2 + 10X - 8 > 0 Any help would be appreciated
November 21, 2012

ALGEBRAIC METHOD
HOW CAN I SOLVE THE INEQUALITY GRAPHICALLY 3X^2 + 10X - 8 > 0
November 21, 2012

Physics
A long jumper leaves the ground at an angle of 24.3◦ to the horizontal and at a speed of 10.6 m/s. How far does he jump?
November 16, 2012

programming MIPS ask 3
Write a MIPS assembly language program for the following for loop: Pseudocode: int x; # for(x=10; x>0; x--){ # printf("x=%d", 4x); #} In the program use the slt or slti instruction and sll
November 11, 2012

programming MIPS ask
Write a MIPS assembly language program that will cover the following steps: Prompt the user to enter a first integer named i1 Prompt the user to enter a second integer named i2 Compute i1+i2-200 Print the value of the result Repeat The program should enforce the rule that the ...
November 11, 2012

biology
Identify the blood types arising from each of the progenitor cell types: a)Myeloid progenitor cells b)Lymphoid progenitor cells No one has answered this question yet.
November 10, 2012

anatiomy/help please
Identify the blood types arising from each of the progenitor cell types: a)myeloid progenitor cells b)lymphoid progenitor cells
November 10, 2012

chemistry
when Zn0 becames Zn++, where do the 2 electrons that are lost come from?
November 8, 2012

Organic Chemistry
Why does crotyl chloride react faster than 1-chlorobutane in ethanol, since both are primary alkyl halides?
November 8, 2012

physics
You set out to design a car that uses the energy stored in a flywheel consisting of a uniform 97-kg cylinder of radius R that has a maximum angular speed of 330 rev/s. The flywheel must deliver an average of 1.70 MJ of energy for each kilometer of distance. Find the smallest ...
November 7, 2012

Chemistry
the density of H2 gas in a rigid container is 0.117 g/L at 55 C. what is the pressure of hydrogen in the flask if it is heated to 125 C?
November 5, 2012

Logic
Draw a flowchart for a program that reads a date in an 8-digit sequence (month, day, year) and determines if the date is a valid date. ignore leap year. Assume Feb has 28 days, and establish a table of days in a month so that you can access the appropriate month to determine ...
November 4, 2012

chemistry
A 15.0ml sample of NaCL solution has a mass of 15.78g.after the NaCL solution is evaporated to dryness, the dry salt residue has a mass of 3.26g. calculate the following concentrations for the %(m/m), % (m/v), molarity (M)
November 1, 2012

Cryptology 101
DES and AES are both “turn the handle” algorithms, in that they use repetition of some number of very similar cycles. What are the advantages to implementer, users, cryptanalysts of this approach?
October 31, 2012

Math
Julie is solving the equation x2 + 6x + 9 = 0 and notices that the discriminant b2 - 4ac has a value of 0. This tells her that the equation has
October 23, 2012

chemistry
how are the ionization energies evidence for the structure of the atom especially the electron configurations for atoms ?
October 23, 2012

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