Saturday
December 10, 2016

Posts by KAYLA

Total # Posts: 1,408

Chemistry
Calculate the total pressure above 1.0L solution of a 1.42M CH3OH(aq) solution at 25 degrees(C). The vapor pressure of pure methanol at 25 degrees (C) is 127.1 torr and the vapor pressure of the pure water is 23.8 torr at 25 degrees(C. You may assume that the density of the ...
December 6, 2016

Chemistry
What is the vapor pressure of a solution prepares by dissolving 4.25g of K2O in enough water to preapare 1.25L of Solution at 25 degrees (C)? Assume that the density of the solution is 1.00 g/mL and that the vapor pressure of pure water is 23.8 torr at 25 degrees (C). I've...
December 6, 2016

Math
Compare partial products and regrouping. Describe how the methods are alike and different
December 6, 2016

Math
Tim has read 60% of a book. He has 24 more pages to finish. How many pages are there in the book?
December 5, 2016

Science
A boy pushes a box of mass 57 kg and it moves with an acceleration of 11.4 m/s2. what amount of force is the boy exerting on the box?
December 5, 2016

Physics
During an adiabatic process, the temperature of 6.50 moles of a monatomic ideal gas drops from 525 °C to 169 °C. What is the work done? Here is my work, is it correct? T1 = 525+273 = 798 K T2 = 169 + 273 = 442 K work done = R[T2-T1]/1-gamma = 8.314[525 - 798]/(1-1.67...
November 30, 2016

English
i have but i dont think my interpretation of the story is correct, i must prepare a speech about this story and I dont want to be inncorect since my proffesor said to ask others
November 30, 2016

English
has anyone read the short story "the new veterans" and can give me like a summary of what happened in the story? i already tried looking online but couldn't find a complete summary? i just need to know mainly the plot? it would be much help
November 30, 2016

Physics
A Carnot engine of efficiency 41% operates with a cold reservoir at 24 °C and exhausts 1290 J of heat each cycle. What is the entropy change for the hot reservoir? Answer in J/K. I keep getting the answer incorrect. Here is the work: Efficiency = 100*(Th- Tc)/Th 41 = 100*(...
November 28, 2016

Social studies
*much
November 28, 2016

Social studies
Okay thanks so mucho for checking my answers:)
November 28, 2016

Social studies
Which of the following did Ralph Waldo Emerson stress the importance of in his writings? The individual •• The family Agriculture Industry
November 28, 2016

Social studies
The last one
November 28, 2016

Social studies
Nevermain I meant to say is it the first one?
November 28, 2016

Social studies
Wait is it The last one???
November 28, 2016

Social studies
Which of the following is a key idea of transcendentalismo? Belief in human reason Belief in personal insights Belief in expansion of the country •• Belief in isolation from other nations
November 28, 2016

American Government
Is it dual federalism?
November 26, 2016

Math
How many 1/3 are there in 25/5
November 26, 2016

Phisics
Determine the power of a motor of a 1200 kg car that changes its speed from 10 m / s to 16 m / s in 3 seconds. Express the result in horsepower and consider null friction.
November 24, 2016

History
Which answer most precisely describes the location of mecca and Medina? A. Arabian peninsula B. Holy land and Mesopotamia C. North Africa D. Southwest asia I think it is B not too sure.
November 22, 2016

Physics
A quartz sphere is 14.0 cm in diameter. What will be its change in volume if its temperature is increased by 305 °F? (the coefficient of volume expansion of quartz is (1.50 × 10^-6) °C-1) Answer in cm^3 I tried this twice and got 0.657 cm^3 and 0.18cm^3 but they ...
November 16, 2016

Physics
a box sliding on a horizontal surface with a speed of 6m/s encounters an incline plane that makes a 15 degree angle with the horizontal line. What is the max distance that will be travelled by the box up the incline before coming to rest if the coefficient of kinetic friction ...
November 13, 2016

Physics
A car is traveling at 7.0 m/s when the driver applies the brakes. The car moves 1.5 m before it comes to a complete stop. If the car had been moving at 14 m/s, how far would it have continued to move after the brakes were applied? Assume the braking force in both cases is ...
November 12, 2016

Chemistry
Consider the neutralization reaction that takes place when hydrochloric acid reacts with aqueous calcium hydroxide Write a complete balanced equation for this reaction
November 11, 2016

Physics
A raft is made of 15 logs lashed together. Each is 30.0 cm in diameter and has a length of 7.00 m. How many people (whole number) can the raft hold before they start getting their feet wet, assuming the average person has a mass of 66.0 kg? Do not neglect the weight of the ...
November 9, 2016

Math
Write a polynomial of the lowest degree with real coefficients and with zeros 6-3i (multiplicity 1) and 0 ( multiplicity 5)
November 9, 2016

English
Write a sequence of events of story welcome to dead house by r.l stine
November 2, 2016

Calculus
The measurement of the circumference of a circle is found to be 70 centimeters, with a possible error of 0.9 centimeter. a) Approximate the percent error in computing the area of the circle. (Round your answer to two decimal places.) b) Estimate the maximum allowable percent ...
October 31, 2016

Math
Tickets at a fair cost $0.75 each. You can also buy a roll of 25 tickets for $15.00. What is the cost of each ticket if you buy a roll of tickets.
October 31, 2016

Reading
Where are the words asset and pitiful in the book hatchet????
October 27, 2016

Stats
HELP!! I have no idea to get this answer :( a doctor wants to estimate the HDL cholesterol of all 20-29 year old females. how many subjects are needed to estimate the HDL cholesterol within 4 points with 99% confidence assuming the standard deviation is 10.8? Suppose the ...
October 8, 2016

English
Staggered is what type of context clue
September 27, 2016

Math
Logan puts a wallpaper border along the top edge of the Four Walls of a rectangular room the room is 10 feet long and 12 feet wide if there are no breaks in the Border how long is it?
September 27, 2016

Biology
Explain the structure of a water molecule and how hydrogen bonding leads to some of its very special properties. Be sure to include how these properties are important to life on Earth
September 24, 2016

Physical Science/ Chemistry
Which of the following shows the correct order of Family #1 elements from least to most reactive? A) Li, Na, Rb, K B) Li, Na, K, Rb C) Rb, K, Na, Li D) Li, Na, K, Ba
September 22, 2016

Math
5/5334
September 21, 2016

Math
Nathan plants equal sized square of sod in his front yard each square has An area of 6 square feet Nathan plants a total of 1,000 squares in his yard what is the total area of the square sod
September 18, 2016

Math
5 11/15 divde 9/19
September 13, 2016

Math
The function rule T–4, 6(x, y) could be used to describe which translation?
September 10, 2016

stats
scores on a University exam are normally distributed with a mean of 68 and a standard deviation of 9. use the 68-95-99.7 rule to answer the following questions 1) what proportions of students score between a 59 to 77? 2) what proportions of students score between a 50 to 86? 3...
September 5, 2016

Algebra 1
Mary is 9 years younger than Greg's age doubled, and their total ages combined equals 33. Create and solve an equation to find both children's ages.
September 2, 2016

Arithmetics
if there are 380 females students in a class, and male students take up 60% of the class, how many total students are in the class? 380/0.6 = 633??
June 9, 2016

Chemistry
Check my answers 63. What type of bond links the monomers together in a polymer? Poly bond Covalent bond Ionic bond Hydrogen bond*** 64.What is the change in atomic mass when an atom emits a beta particle? decreases by 1*** increases by 1 decreases by 2 remains the same 65. ...
June 2, 2016

Chemistry
so C?
June 2, 2016

Chemistry
You are given Ka of carbonic acid is 4.3 x10^-7. This means that Carbonic acid is a good hydrogen-ion acceptor*** good hydrogen-ion donor poor hydrogen-ion acceptor poor hydrogen-ion donor
June 2, 2016

Chemistry
Calculate the molality of a solution prepared by dissolving 225.5 g KNO3 in 825mL of water. Show your work
June 2, 2016

history
Which statement best describes the provisions of the Missouri Compromise? a) It maintained the balance of free and slave states. b) It enacted a stricter fugitive law. c) It outlawed slavery in the District of Columbia. d) It prohibited slavery in the Northwest Territory.
May 26, 2016

General Chemistry
thank you :D
May 26, 2016

General Chemistry
omg that should say 1.50 mmol
May 26, 2016

General Chemistry
A 1/5 mmol (yes, millimol... no, it isn't a typo_ sample of XeFn h as a mass of 0.311 g. What is the value of n? The answer is 4, but why?
May 26, 2016

maths
i= the square root of -1 so multiply the whole term by i/i to get -5i
May 26, 2016

maths
the second equation should be L=5+2W my bad.
May 26, 2016

maths
2L+2W=142 L+5=2W solve the system of equations
May 26, 2016

math
you're missing part of the question. do you have a % interest?
May 26, 2016

Math
In a group of 10boys each boy had 2 hats how many hats did they have?
May 24, 2016

Chemistry
What is the oxidation half reaction for the following equation: Cr2O7^-2 +Fe+2 - - > Cr^+3 + Fe^+3 Cr^+3 - - > Cr2O7^-2 Fe^+2 - - > Fe^+3 Fe^+3 - - > Fe^+2*** Cr2O7^-2 - -> Cr^+3
May 20, 2016

Chemistry
Which atom has a change in oxidation number of –3 in the following redox reaction? K2Cr2O7 + H2O + S - - > KOH + Cr2O3 + SO2 K Cr*** O S
May 20, 2016

Math
8x - 4 - x = -5
May 13, 2016

Chemistry
If i have 0.5 mole of hydrogen peroxide how many moles of oxygen would be produced assuming all of the hydrogen peroxide decomposes?
May 1, 2016

Chemistry
If i have 0.5 mole of hydrogen peroxide how many moles of oxygen would be produced assuming all of the hydrogen peroxide decomposes?
April 30, 2016

algebra with pizzazz
What might you have if you don't feel well
April 21, 2016

Language arts
Emily is correct got 100%
April 20, 2016

Math
The school bus will be either be on time ir late. The probability that it will be on time is therefore 0.5.
April 20, 2016

Math
I am doing a practice test and I am stuck on a couple of questions. 1.) Write a rule for the following sequence 8, -1, -10, -19 2.) Find the next three terms of the sequence -2, -12, -72, -432 3.) Which explains why the sequence 81, 3, 1/9 thanks
April 17, 2016

MATH
How much would you have to invest into a 5 year certificate of deposit paying 2.3% compounded weekly to make it worth $4500 at the end of the term? A=P(1+r/n)^nt 4500=P(1+0.023/52)^52(5) I am receiving a syntax error please help
April 9, 2016

history
Explain how fear of communism during the Cold War affected American society. How did this affect the balance between national security and civil liberties?
April 8, 2016

physics
a block slides along a path that is without friction until the block reaches the section of length L = 0.75 m, which begins at height h = 2.0 m on a ramp of angle θ = 30°. In that section, the coefficient of kinetic friction is 0.40. The block passes through point A ...
March 30, 2016

chemistry
why were you instructed to add distilled water in step 12, and possibly more distilled water in step 15? what purpose does the water serve?
March 23, 2016

Literature
Why does Shelley have Frankenstein choose England for the creation of the second creature. What possibilities from her life might be reflected in this? How does this choice relate to Romanticism?
March 16, 2016

Math
x= amount of children who play tennis y= total amount of children
March 14, 2016

Math
.25=8/x .20=x/y x=32 .20=32/y y=160
March 14, 2016

Spanish
Prepara (1) _____ para salir de viaje el lunes por la mañana. Para ello, haz (2) ______ las maletas, sal (3) _____ de la habitación y métete (4) _____ en el coche. Después, ponte (5) _____ el cinturón y ten (6) ____ paciencia porque el viaje ...
March 3, 2016

Math
1 hour = 60 minutes 1/3 hour = 60/3= 20 minutes 5 hours= 300 minutes 5 1/3 hours= 320 minutes therefore the answer is (320/2)-40
March 2, 2016

physics
Boxes A and B are connected to each end of a light vertical rope. A constant upward force F = 80.0 N is applied to box A. Starting from rest, box B descends 12.0 m in 4.00 s. The tension in the rope connecting the two boxes is 36.0 N. What are the masses of (a) box B, (b) box A?
March 1, 2016

Math
12P+15A=100
March 1, 2016

Math
1- 1/3- 1/5= 15/15- 5/15- 3/15= 7/15 of the pizza is left
March 1, 2016

Calculus
Two sides of a triangle have lengths 8 m and 13 m. The angle between them is increasing at a rate of 0.08 radians /min. How fast is the length of the third side increasing when the angle between the sides of fixed length is π/3 radians.
February 24, 2016

Algebra
The problem has two related parts 1) let a be an arbitrary real number. Find the distance between the point (1,2) and the point (4,a). (answer should be an algebraic expression in terms of a). 2) find the value of b for which the point (0,b) is equidistant from (4,4) and (5,-4...
February 24, 2016

essay
While servant leadership is often associated with Christianity and the Bible, one could argue it is compatible with most religions and philosophies and that it transcends cultures. This assignment presents you with an opportunity to explore other cultures, philosophies, and ...
February 20, 2016

Living environment
why is estrogen and progesterone most closely associated with build up of the uterine lining in the human female during the menstrual cycle ?
February 17, 2016

Living environment
Why does meiosis and fertilization lead to the greatest variety of genetic combinations ? . iM doing test corrections and I am struggling to explain the question above . So far all i said was that that was the only answer that made sense but i need more details , please help ...
February 17, 2016

Math and are my answers correct
1.Male and female high school students reported how many hours they worked each week in summer jobs. The data is represented in the following box plots: two box plots shown. The top one is labeled Males. Minimum at 1, Q1 at 3, median at 10.5, Q3 at 14, maximum at 21. The ...
February 15, 2016

URGENT! Due soon and I used 8 of 10 attempts
Archaeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive isotope 14C present in the object. The amount of isotope decreases in a first-order process. If 14.5% of the original amount of 14C is present in a wooden tool at ...
February 14, 2016

Algebra
Write an equation that expresses the following relationship. P varies directly with the square of D. In your equation, use K as the constant of proportionality.
February 8, 2016

Algebra
Write an equation that expresses the following relationship. U varies directly with the cube of P and inversely with D. In your equation,use K as the constant of proportionality.
February 7, 2016

English
Thanks
January 28, 2016

English
Find the complete predicate and the verb or verb phrase, 1. Carl lifted the lid of the pot. Lifted is the verb Lifted the lid of the pot is the Complete predicate Is this right?
January 28, 2016

Physics
A ball is thrown straight up at 24.0 m/s. Ignore the effects of air resistance in your calculations.After 2.00 s?
January 23, 2016

Connexus Help
Does anybody go to Connexus Acadimy 7 grade??i need someone to correct my Art questions!!
January 18, 2016

World History
Which of the following statements about the European colonial powers is correct? A. They were careful not to divide ethnic and cultural groups. B.They believed in a democratic rule. C. They ruled by force and oppression D. They had the consent of the people being governed.
January 16, 2016

algebra
A student has scores of 72, 78, and 87 on three government exams. What score does she need on a fourth exam to give her an average of 80 or better?
January 15, 2016

Science
each of the two tall pea plants carry a recessive gene for a small plant in their genetic family tree
January 11, 2016

Physical Education
yup!
January 11, 2016

Math ASAP
0.18, 1/5, 0.21, 0.24 the answer is c) :)
January 11, 2016

Spanish
yup! that's right! :)
January 11, 2016

thank you!
thank you dr.bob and damon! :)
January 11, 2016

math/ chemistry
oh, sorry! yes, M= 62g/mol in my case and I need to go from there to mol/L. and the question is: The solubility of magnesium fluoride, MgF2(s), is 1.72x10^-3 g/100mL at 25 degrees. What is the Ksp value for Magnesium fluoride at 25 degrees?
January 11, 2016

math/ chemistry
so I have this chemistry problem which involves math and basically I need to convert 62 g/mol into mol/L but I don't know how. like do you DIVIDE the g/mol by 1000 to convert g to L? and then how to you get the mol to become the numerator?
January 11, 2016

algebra
Meghan pays 10% more each month in rent than Scott, and together they pay $892.50 per month. How much does Meghan pay per month? Round the answer to the nearest cent, if necessary. Meghan pays $ each month.
January 8, 2016

algebra
A student's grade in a course is the average of 4 test grades and a final exam that is worth three times as much as each test. Suppose a student has test grades of 90, 88, 81, and 94. Write an equation to model this situation where x is the student's grade on the final...
January 8, 2016

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