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Posts by Alexis

Total # Posts: 956

Chemistry
A mixture of gases contains 2.00 mol of O2, 3.00 mol of N2, and 5.00 mol of He. The total pressure of the mixture is 850 torr. What is the partial pressure of each gas?

English
I need to make a thesis that uses stranger in a strange land and its backed up by the Handmaids tale. Like I could talk about how religion causes oppression in stranger in a strange land and the handmaids tale. Right now im trying to use this thesis:Robert A. Heinlein and ...

algebra
the formula d=(square root)12,800+h^2 gives the distance d in kilometers to the horizon from a satellite h kilometers above Earth.Find the distance to the horizon to the horizon from a satellite 4200 km above Earth. Round to the nearest kilometer. PLEASE HELP ME

AP Physics B
Thank You So Much!

AP Physics B
A 63.6-kg bungee jumper is standing on a tall platform (h0 = 50.6 m). The bungee cord has an unstrained length of L0 = 9.54 m and, when stretched, behaves like an ideal spring with a spring constant of k = 67.8 N/m. The jumper falls from rest, and it is assumed that the only ...

psycholoogy
Behavioral geneticists and evolutionary psychologists emphasize

Science 7 HELP!!!!
I have the same problem

Maths
Find the derivatives of these: f(x)=(√(x))sinPix Also: f(x)=√(Cosx+sinx) Steps would be greatly helpful as I will be able to use them as reference. Thank you.

Maths
Find the derivatives of these: f(x)=√

physics
A 75.0 kg stunt man jumps from a balcony and falls 28.0 m before colliding with a pile of mattresses. If the mattresses are compressed 0.800 m before he is brought to rest, what is the average force exerted by the mattresses on the stuntman?

7th grade social studies help please
Idk Could u help me 2 figure out

Social Studies 8R - Paragraph Check
please check my my essay okayyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy please let me know if there are any wrong let me know

Physics
If an object is thrown in an upward direction from the top of a building 1.60 x 102 ft. high at an initial velocity of 21.82 mi/h, what is its final velocity when it hits the ground? (Disregard wind resistance. Round answer to nearest whole number and do not reflect negative ...

physics URGENT! HELP
If an object is thrown in an upward direction from the top of a building 1.60 x 102 ft. high at an initial velocity of 21.82 mi/h, what is its final velocity when it hits the ground? (Disregard wind resistance. Round answer to nearest whole number and do not reflect negative ...

physics
If an object is thrown in an upward direction from the top of a building 1.60 x 102 ft. high at an initial velocity of 21.82 mi/h, what is its final velocity when it hits the ground? (Disregard wind resistance. Round answer to nearest whole number and do not reflect negative ...

AP Physics
A 1200 kg car is moving at 33 m/s then has the brakes applied at a deceleration of 6.1 m/s. How far will it move before stopping?

Chemistry
Write a blanaced molecular equation for the reaction 2Na(NO3) + Cu(OH)2. Write complete ionic and net ionic equations?

Chemis
Write a blanaced molecular equation for the reaction 2Na(NO3) + Cu(OH)2. Write complete ionic and net ionic equations?

English singluar and plural possessive nouns
What are some rhyming plural possessive words?

2nd grade math
write the sum.Show the ten-ten-fact you used. 9+7=16 /\ 1 6 10+__=? is it 10+6=16

General Chem
Nitrogen oxide reacts with oxygen gas to form nitrogen dioxide (NO2). In one experiment 0.866 mole of NO is mixed with 0.503 mole of O2. Calculate the number of moles of NO2 produced

Math
What is 71 times 65 in ladder form

Chem 105
If 13.4 kilograms of Al2O3(s), 54.4 kilograms of NaOH(l), and 54.4 kilograms of HF(g) react completely, how many kilograms of cryolite will be produced?

chemistry
what is the height of the ethyl alcohol that exactly fills a 200.0mL container? the density of ethyl alcohol is 0.789/mL

Science
A hydraulic lift office chair has its seat attached to a piston with an area of 11.2 cm2 . The chair is raised by exerting force on another piston, with an area of 4.12 cm2 . If a person sitting on the chair exerts a downward force of 219 N, what force needs to be exerted on ...

Math
Sophia has $1.00 in coins. 1/5 is dimes. 2/15 are nickels. 2/3 are pennies. How many of each coin does she have?

sta luces
graph -20x-45y=48

Math
All the numbers from 1 to 99 are multiplied together. What is the last digit of the product?

chemistry
jason needs to use 63.5 grams of alcohol that has a denisty of .818 g/ml. How many millilters of the alcohol would jason need?. show work please

physics
An airplane with a speed of 88.0 m/s is climbing upward at an angle of 72.1 ° with respect to the horizontal. When the plane's altitude is 779 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath the point...

Math
Thank you (:

Math
Can you place least to greates ; these numbers 5/6, 0.85, 0.9

Science
stomata is what makes gases it is found on a tree and leaf

physics
356 barrels

algebra
what is 1=2n

math
Find all the possible rational roots of f(x)= 4x^4 - 3x^3 +2x^2 + x -3 f(x) = -3x^3 - 2x^2 + x -1 Thank you so much:)

Math, Pre Calc
Thanks!

algebra
2x^3+7x^2-18x-63

math
54x^5-16x^2

math
2x^3+7x^3-18x-63

Chemistry
Write the net ionic equation for the reaction between sodium chloride and cobalt (ll) nitrate. so far i have... 2NaCl(aq)+ Co(NO3)2(aq)---> NaNO3(aq)+CoCl2(s)

math
65/6.5 equal

health
yes u r right

Math
Christine runs 3 miles in 25 minutes. At the same rate, how many miles would she run in 85 minutes?

reading
Due to his ______ habits, he had a ______ for berating his friends in an effort to bolster his own reputation.

geometry
Find the surface area of a rectangular prism with a height of 11, a length of 15, and a width of 10.

Geometry
The radius of a circle is 7 feet. What is the area of a sector bounded by a 180° arc?

pre algebra
3 1/4 - (3 - 1 5/6) =

MATH
rowan raised $640 in a charity walk last year. This year he raised 15% more than he raised last year. How much money did rowan raise this year? SHOW YOUR WORK.PLEASE HELP ME

World History
Where did freedom come from?

Chemistry
Aluminum sulfate and calcium acetate = ?

Chemistry
how do you show the synthesis of copper (1) chloride?

English
What are some examples of irony that compares and contrasts The Story of an Hour and The Whirligig of life?

writing
i got c am i right plz help me what to u think

Business
How can a financial manager at a non-profit make better use of Web capabilities to enhance the financial position of the organization?

Business
Do you see the job of the non-profit financial manager as getting easier or more difficult in the future?

math
If a rectangular has 54 feet im volume and 6 feet im im length and 3 feet in width what is the height

english
how to start an opening paragrph for explaning what love and infatuation means

Administrative Justice
or do you guys now of a good website that can help me?

Administrative Justice
what do probation officers do during trial and pretrial processes?

Math
You play a game where you win $1.00 for each dot that turns up on a fair die (has 6 sides). You pay $3.50 to play the game (and the money is not returned). Find the expected (average) winnings for this game.

Math
You play a game where you win $1.00 for each dot that turns up on a fair die (has 6 sides). You pay $3.50 to play the game (and the money is not returned). Find the expected (average) winnings for this game.

calculus
yeah u need to review them omg i had a crush on this guy named bryan and he spelled it the same way as you! weird right?

Math
sorry i don't know this crap is outta my head

Biology
Ummmmmmmmmmmmm MAY-be u should ask Watson and cricks model and not some website i have the best advice and u should probably listen now go online and LISTEN TO SOME MINDLESS BEHAVIOR CUSZ THEY R AMAZING!!!!!!!!!!!!!!!!!!

social study
What are some major turning point in vietnamese history leading up to world war 2

Chemistry Help Please :)
The experimental part is that, say we add 4 ml of water, 2 drops of saturated iodine in KI solution.. etc. to the reaction in the introductory paragraph. We are suppose to predict the colour changes in the two phases when each is added to the initial reaction.

Chemistry Help Please :)
I'm stuck on how to do these 4 problems concerning Chemical Equilibriums. When varsol and iodine/pottasium iodide solutions are mixed, the two phases form.. phase A (top) would be pink and phase B (bottom) would be brown. What are the colours in each phases for these 4 ...

physics
A) PE of gravity= m*g*h m=mass of object g=acceleration due to gravity h= distance mass= weight/gravity=4.383 PE=(4.383kg)(9.81 m/s^2)(1.7m) PE=73.095 J

chemistry
A student mixed 75.0 mL of water containing 0.75 mol HCl at 25�C with 75.0 mL of water containing 0.75 mol of NaOH at 25�C in a foam cup calorimeter. The temperature of the resulting solution increased to 35�C. How much heat in kilojoules was released by ...

Social Studies
Ok, so in many ways the relation between China and Japan reflect what we've already seen between Russia and Byzantium. What were the most important things that Japan borrowed from China? Chinese influence in Japan reached its height during the time of Prince Shotoku. What ...

Global History
This concerns the feudal powers in Japan: Ok, so in many ways the relation between China and Japan reflect what we've already seen between Russia and Byzantium. What were the most important things that Japan borrowed from China? Chinese influence in Japan reached its ...

Physics
A car travels 105 km to the north at 65km/hr and then turns around and travels 25km at 80km/hr. What is the difference between the average speed and the average velocity on this trip?

Math
A person invests a total of 22,00 in 2 accounts. 1 investment earned 7% while the other earned 5.5%. The amount of investments earned for one year was $1312. How much was invested in each account?

MATH
DESCRIBE THE ANGLE SUM THEORY AND HOW THE FORMULA WORKS. HELP ME PLEASE I NEED TO STUDY FOR A TEST

Math
frame= 15x * 15x = 225x^2 mirror= pi(r)^2 = pi(25x)^2 area of metal(answer in factored form)=225x^2-(25)pi x2 = 25x^2(25-pi)

chemistry
What is the balanced equation for 0.60M Phosphoric acid and 1.85M NaOH?

math
The area of a rectangle is 24 m2. The length of this rectangle is 6 m. Which equation could be used to determine the width, w?

lac english 1 a
short stories memoirs by ernesto gaarza and rusell baker

lac english 1 a
how are bario boy and no gumtion alike different In what ways are the authors’ choices and depictions related to the subject matter of their stories?

Physics
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 75 kg man just before contact with the ground has a speed of 6.1 m/s. (a) In a stiff-legged ...

shurley grammar
jjjjjjjjjjjjjjjjjj

math
Suppose t teachers and s students visit the museum for a field trip. The price of a ticket for a teacher is a dollars and the price of a ticket for a student is b dollars. Which of the following expressions represents the cost, in dollars, of 2 teacher tickets and 28 student ...

MATH
Juan makes $6.50 an hour plus an extra $15.25 per week. Last week he earned $47.75. Look at this equation that represents Juan's earnings ;ast week. 6.50h+15.25=$47.75 How many hours did Juan work?

math
Juan makes $6.50 an hour plus an extra $15.25 per week. Last week he earned $47.75. Look at this equation that represents Juan's earnings ;ast week. 6.50h+15.25=$47.75 How many hours did Juan work?

Math
Given the hyperbola[(x+3)^2/4]-[(y-1)^2/9]=1,find the equations of the asymptotes.

4t Grade Math
Please help me write a multiplication sentence for 3X9=

physics
An ice skater glides around a rink at a constant speed of 2 m/s. Is the skater accelerating?

science
music

Math
How do you find the total earnings when given the salary, commission rate, and sales? EX question: $1,ooo plus 6% on sales of 2,000

math
24

English
What is the meaning of this stanza? Money maketh festival, Wine she buys, and beds can strow; Round the necks of captains tall, Money wins them chains to throw, Marches soldiers to and fro, Gaineth ladies with sweet eyes: These alone can ne'er bestow Youth, and health, and...

4th grade Math
I need help it the same as what Zack's problem is please and thank you.

math - algebra
f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output value of 5,000?

math
CAN YOU HELP ME ? WHAT ARE THE TWO HAND ON THE CLOCK CALLED. THE LONG ONE AND THE SHORT ONE. THANK YOU ALEXIS LAANG

math - algebra
f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output value of 5,000?

math - algebra
f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output value of 5,000?

science
procedure

Calculus
What is the derivative of -3x((x+1)^1/2)

Calculus
what is the derivative of -3x((x+1)^1/2)?

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