Wednesday
August 24, 2016

Posts by sophie

Total # Posts: 445

Chemistry
How many grams of magnesium nitride are formed from 45.1 moles of magnesium?
April 16, 2013

heat energy
help me convert 0.093cal/g¤c to j/kg/k
March 20, 2013

Math
18 play baseball, 17 play basketball, 30 play neither or both. I'm trying to make a Venn diagram but don't understand how. Please help!
March 18, 2013

physics
differences btw a window unit air-conditioner and split-unit air conditioner.(2)explain d working principle of a freeze dryer using a diagram
March 14, 2013

physics
what factors can affect a bodies temperature rise?
March 14, 2013

Science
how would tides be different if the moon revolves as fast as the earth rotate
March 7, 2013

Chemistry
The density of carbon in the form of diamonds is 3.51 g/cm^3. If you have a 40- carat spherical diamond, what is the diameter of the diamond in millimeters? (1 carat=0.200 g)
March 7, 2013

chemistry
which alkali metal form superoxidess?(2)explain why rubidium has a short life?
March 7, 2013

chemistry
explain why iron is paramagnetic?
March 7, 2013

Chemistry
Mercury dissolves in concentrated nitric acid, with the evolution of a reddish-brown gas, just as in the reaction shown in figure 5.4 on page 188 for copper. The oxidation state of the mercury after reaction is +2. Write a balanced net ionic equation for the reaction?
March 7, 2013

Chemistry
Mercury dissolves in concentrated nitric acid, with the evolution of a reddish-brown gas, just as in the reaction shown in figure 5.4 on page 188 for copper. The oxidation state of the mercury after reaction is +2. Write a balanced net ionic equation for the reaction?
March 7, 2013

math
y^2+4y-32=0 what is the greatest factor
March 5, 2013

MATH
Writeacher is right!
February 21, 2013

MATH
The answer is $61.25, but I don't now how to get it
February 21, 2013

Social Studies
"How was the free-trade trial of 1849 a victory for the Metis?" Was it because the 4 Metis offenders were given mercy and it also ended the HBC monopoly?
January 13, 2013

algebra
What is the solution of the system of equations? y = 3x + 7 y = x – 9
December 21, 2012

algebra
At the Wild Thing Zoo, you can rent a motorized cart to tour the grounds for a $4 initial charge and $4 per hour. An equation that represents the total cost y for x hours is y = 4 + 4x. At Safari Zoo, you can rent the same cart for a $3 initial charge and $5 per hour. An ...
December 21, 2012

algebra
In a basketball game, a regular basket was worth 2 points and a long-distance basket was worth 3 points. If there were 45 baskets in a game and 96 points total, how many regular baskets r and long-distance baskets l were made? Show the correct system of equations.
December 21, 2012

algebra
You decide to market your own custom computer software. You must invest $3,255 for computer hardware, and spend $2.90 to buy and package each disk. If each program sells for $13.75, how many copies must you sell to break even?
December 21, 2012

geometery
1.given the function y=x^2-4x+5,find the following: a.vertex b.maximum or minimum c.axis of symmetry d.y-intercept e.x-intercept(zeros) f.graph
October 25, 2012

perimeter and area
what is 800cm times 15cm help me find the area cm2
October 19, 2012

Physics
A bullet is fired straight up from a gun with a muzzle velocity of 148 m/s. Neglecting air resistance, what will be its displacement after 6.3 s? The acceleration of gravity is 9.8 m/s2 .
October 7, 2012

Mathematics
A jar has eight red, nine blue, and ten green marbles. What is the least number of marbles that you can remove from the jar and be certain that you have three of the same color?
September 30, 2012

chem
How much heat is necessary to change 5 grams of water at 10 degrees celcius to water at 70 degrees celcius?
September 23, 2012

5th grade math
the Answer is very simple USE YOUR NOGIN!
September 13, 2012

physics
A small mass m hangs at rest from a vertical rope of length l that is fixed to the ceiling. A force F then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle (theta)=(theta)0 and the mass has been raised by a vertical ...
May 22, 2012

physics
small mass hangs at rest from a vertical rope of length that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle and the mass has been raised by a vertical distance . Assume the force&#...
May 22, 2012

physics
A large 63.0kg board is propped at a 44 degree angle against the edge of a barn door that is 2.5 m wide. How great a horizontal force must a person behind the door exert (at the edge) in order to open it? Assume that the coefficient of friction between the board and the door ...
May 16, 2012

R.H dana
i forgot my spelling words how do i prent my homework out miss.pitkin
January 31, 2012

Spanish-I'm sorry SraJMcGin
Hi SraJMcGin, I'm realy sorry I asked this question again-I never saw your post from a few days ago-I only saw what was posted by a Lore-that's why I asked what I did because the post by Lore changed some things around that I didn't understand-I never saw your post...
January 5, 2012

Spanish-Thank you Ms. Sue
Thank you. I appreciate it
January 5, 2012

Spanish-Please check SraJMcGin
Hi, I redid some of the answers as suggested yesterday from someone who responded to my post. Could you please see if I did them correctly-Thank you- I made the corrections-someone yesterday redid a question but the questions shouldn't be redone-that's my homework-the ...
January 5, 2012

Spanish-8th grade-Please check
I apologize. I posted once early yesterday and then late. The person who answered caught a few mistakes which I now corrected.However, the person who responded changed the questions which I had to answer.The questions can't be changed-all I had to do was answer them. All I...
January 5, 2012

Spanish-8th grade
I made the corrections-someone yesterday redid a question but the questions shouldn't be redone-that's my homeowrk-the answers isare mine and I'm not sure if they're correct. 1. ¿Dónde estuvo tu mama ayer? Mi mamá estuvo en la tienda. 2. &...
January 5, 2012

Spanish-8th grade
Thank you for helping- I see what is wrong in mamá-except number 3 was asking "adonde" not Dónde-would it still be same answer? Also, number 5, I'm not sure I understand-shouldn't la escuela be separate from "yo empecé" ??
January 4, 2012

Spanish-8th grade
Please check 1. ¿Dónde estuvo tu mama ayer? Mi Mama estuvo en la tienda. 2. ¿Tocaste un instrumento la semana pasada? Sí, yo toqué un instrumento la semana pasada. 3. ¿Adonde fuiste el lunes pasado? Yo fui a la escuela el lunes pasado...
January 4, 2012

Spanish 8th grade
I had to answer the above questions-I'm not sure if I answered them correctly-expecially number 3 Thank you for helping
January 4, 2012

Spanish 8th grade
1. ¿Dónde estuvo tu mama ayer? Mi Mama estuvo en la tienda. 2. ¿Tocaste un instrumento la semana pasada? Sí, yo toqué un instrumento la semana pasada. 3. ¿Adonde fuiste el lunes pasado? Yo fui a la escuela el lunes pasado? 4. ¿C...
January 4, 2012

Spanish-Please check also
Thank you for checking these-it was a typo in son conjugated as fueron Thank you again Happy New Year!!
December 30, 2011

Spanish-Please check also
I couldn't number these because it kept saying I wanted to post a website URL I had to conjugate each vwerb in the past tense for above assignment-thank you
December 30, 2011

Spanish-Please check also
hago-hice tiene-tuvo corremos-corrimos juego-jugué son-fueron juegan-jugaron piensa-pensó pienso-pensé entienden-entendieron tienen-tuvieron andan-anduvieron patinan-patinaron corren-corrieron pescan-pescaron hacen-hicieron pregunta-preguntó doy-di ...
December 30, 2011

Spanish
Thank you for answering and catching that one
December 30, 2011

Spanish-Please another to check
Please also check these-I had to post twice to get them listed-had a problem numbering the answers
December 30, 2011

Spanish
Did I conjugate these correctly? 1.tomo-tome 2.tengo-tuve 3.es-fue 4.quiero-quise 5.deseo-deseé 6.dicen-dijeron
December 30, 2011

Spanish-8th grade
I was told to conjugate poder in the past tense for 1-4-so I knew what I wa suppose to conjugate Thanks for helping me-I really appreciate it
December 30, 2011

Spanish-8th grade-Please recheck
Please recheck number eight
December 30, 2011

Spanish-8th grade
Number eight got cut off-it should read supieron I think??? I have Windows XP
December 30, 2011

Spanish-8th gradePlease check
After someone please checks this, could you also explain how to do accents on the keyboard-I always use Spanishtypeit which is a pain at times to go back and forth with- I have Windows PC
December 30, 2011

Math
An engineer is desingning a parabloic arch, the arch must be 15 m high , and 6 m wide, at a height of 8 m a) determine a quadratic fundtion that satisfies these conditions b) what is the width of the arch at its base
October 25, 2011

Math
The height , in metres, of the trajectory of a football is given by h(t)=2=28t-4.9t^2, where t is the time in height of the football and the time when the height is reached
October 25, 2011

writing
can someone proofread?
October 10, 2011

writing
Freedom Doesn’t Come Free What is something you can never show much gratitude for? Well, veterans have done many wonderful things for our country, especially freedom. Freedom is a debt that can we can never repay veterans for. One reason I said they fought for freedom was...
October 10, 2011

Chemistry
exothermic
October 10, 2011

writing
I have two coins. Their sum is $0.55. One of them is not a nickel. What coins do i have?
October 10, 2011

Chemistry
A 2.64 L container is filled with 169 g of argon. (a) If the pressure is 10.0 atm, what is the temperature? ____K (b) If the temperature is 225 K, what is the pressure? What Gas law formula would I use?
June 28, 2011

Chemistry
A 2.64 L container is filled with 169 g of argon. (a) If the pressure is 10.0 atm, what is the temperature? ____K (b) If the temperature is 225 K, what is the pressure? What Gas law formula would I use?
June 28, 2011

health
who are resonsible if the doctors office suffers a power outage. the doctor, or the agency managing the computerized data for the doctor????
June 15, 2011

math
3.6
June 6, 2011

math
Find a parametric description for the ellipse having the focus F=(0,-4), corresponding directrix y=3, and eccentricity e=3/4.
May 25, 2011

math
What is the distance between the parallel planes: ax+by+cz=d1 and ax+by+cz=d2?
May 22, 2011

math
Is it possible for the lengths of a right triangle to form a geometric sequence? If yes, determine the lengths and the measures of the acute angles. if it's not possible, explain why not.
May 22, 2011

math
illuminated by the rays of the setting Sun, Kelly rides along on a merry-go-round casting a shadow on a wall. The merry-go-round is turning 36 deg per sec. Kelly is 25 ft from its center, and the Sun's rays are perpendicular to the wall. At what rate is the shadow moving ...
May 22, 2011

Math
What is the distance between the parallel planes 2x+y-3z=13 and 2x+y-3z=35?
May 21, 2011

math
why do you have = signs in part a?
May 12, 2011

math
Given the plane 2x-3y+7z=4, a) Find the equation for the line perpendicular to the plane that intersects the plane at the point P=(6,5,1). b) How far is it from the point (4,-2,3) to the plane?
May 12, 2011

math
Apply logarithms to create a linear relationship: ((x^3)(y^1.5))/(z^.5)=k
May 11, 2011

english homework
Are there language errors? please
April 25, 2011

english homework
nobody?! please help me
April 25, 2011

english homework
Hello, sorry I just saw the last message then I would like help in order to correct the dialogue: spelling, vocabulary, grammar... Be intransigent even if it's my second language tell me if something can seem illogical Look at the dialogue: D: doctor M: patient's ...
April 25, 2011

english homework
thanks
April 25, 2011

english homework
Hello! I have to write a dialogue with 3 characters, the subject is "hello doctor!" I probably make a doctor with a patient and the patient's mother, my idea consists of simulating (a lot of )illnesses in order to not to go to school (it's about the little ...
April 25, 2011

math
oups sorry 36x3=3 yards
March 30, 2011

math
36 inches=3 yards 36=1,2,3,4,6,6,9,12,18,36 W<12 W>6
March 30, 2011

math
36 inches=3 yards 36=1,2,3,4,6,6,9,12,18,36 W<12 W>6
March 30, 2011

physics
20.7
March 25, 2011

Calc
find the slope of the tangent to the curve: y^2=x^3/xy
February 22, 2011

Calculus
find the derivative of 4x(lnx+ln9)-9x+e
February 21, 2011

Calculus
find the derivative of g(a)=sin(arcsin(9a))
February 20, 2011

physics
a crate is pushed to the top of a frictionless inclined plane 15 m long with a force of 25 N. If the crate weighs 125 N, how high is the inclined plane? 0.5 m 1 m 3 m or 5 m
February 19, 2011

math
what is 8x-2y=-6 please help in simple form
February 8, 2011

maths
i have got to find the perimeter of a triangle that has one side of 8x-7w another that says 3x+9y and then another that says 3y+5w whats the perimeter of the triangle ??? please help
January 21, 2011

science
How many moles of oxygen molecules, O2, are required to produce 0.268 mol of K2Cr2O7? Show your work.
December 29, 2010

Physics
An isolated 3 kg object is moving in the positive y direction along the -y axis at 2 m/s; when it reaches the origin it breaks into two pieces sending a 1 kg fragment in the +y direction at a speed of 3.7 m/s. what are the velocity and direction of the other piece immediately ...
December 16, 2010

Physics
a 60 kg person falls off a 15 kg sled moving at 2 m/s. The person doesn't move after falling. Assuming no friction with the ice, and not other net forces acting on the sled, what is the change in velocity of the sled after the person falls off.
December 16, 2010

10th grade math help
How do you solve? 3-3sinx-2cos^2(x) = 0
December 13, 2010

4th grade algebra
-21... oh the days of fourth grade... have fun!
November 12, 2010

math gr.6
im in 6th grade but i have this book that says scott forson its blue
November 2, 2010

Foreign Languages
ok french and russian
November 2, 2010

Foreign Languages
o ok
November 2, 2010

Foreign Languages
how do you say goodafternoon in evry laungega
November 2, 2010

english 6th grade
what if it says Marco, my older brother, likes to play ________________ tennis. my older brother is underlined would that be nonrestrictive or restrictive
November 2, 2010

english 6th grade
Please help Ms.Sue its a six grade level.
November 2, 2010

english 6th grade
what does restrictive and nonrestrictive mean???????
November 2, 2010

science
what man made object has the greatest acceleration ?
November 2, 2010

spanish 6th grade
tnks
November 1, 2010

spanish 6th grade
how do you say what is your favorite food in spanish
November 1, 2010

science
is it condensationi am not sure
November 1, 2010

science need help!
i am doing questions and i just want to say i need help the question says ____________ affects how much moisture is in the air i dont get it
November 1, 2010

math
the area of a rectangle is 60cm.the length is 11cm more than the width. find the width.
November 1, 2010

psyc
Studies that have overcome methodological problems in examining intelligence scores for African-Americans as compared to people of Anglo- Saxon descent revealed: that the test results were useless because racial prejudice invalidated them. that African-Americans scored higher ...
October 31, 2010

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