Monday
April 21, 2014

Posts by Lily


Total # Posts: 1,091

chemistry- can you check my answers?
can you please check my answers?? 9. For the following reaction delta H=2816 kj. 6 CO2(g) + 6 H2O(l) -> C6H12O6(s) + 6O2(g) how is the equilibrium yeild of C6H12O6(s)affected by each of the following? a) increasing pressure of CO2 increase decrease no effect Answer: increas...

MATH URGENT!!!!!!!!!
SIMPLIFY: s^2+4s-4 SIMPLIFY: x^2-4x-3

MATH URGENT!
thanks

MATH URGENT!
Madison is standing on the roof of a building that is 350 feet above the floor. She throws a ball straight up with a velocity of 20 feet per second. How long will the ball be in the air before it hits the ground?

math urgent!
Tyler is on the 15th floor of a building. She throws a ball straight down from the window, which is 220 feet above the ground. How fast must she throw the ball(in feet per second) for it to hit the ground in 3 seconds?

math
So, its 3000grams, because 500g+500g=1000g and 1000g+1000g=2000g and 1000+2000=300grams

math
1 kg = 1000 g So, 1000+500=1500 grams

Math 8th Grade
Jane's garden is in the shape of a right triangle. One leg of the right triangle is longer than the other leg. The area of the garden is 63 square meters. What is the length of the longer leg?

Math
Jane's garden is in the shape of a right triangle. One leg of the right triangle is longer than the other leg. The area of the garden is 63 square meters. What is the length of the longer leg?

math
5 combos you idiot

Math
=10c+c^2-4c =c^2+6c

Math--Proportions
Solve for x: 2 to x+1=x+2 to 3 or 2 to x+3= x+2 to x+5 (the proportions end up being the same in the end) I keep getting to the part after you FOIL, and then I get stuck

Math
10^-8 comes out to be a fraction so its smallest 10^-6 is next, also a fraction anything^0=1, so 10^0=1 then they just keep going up, so its 10^5 and 10^9

math
a square with perimeter 5 less then the area. perimeter and area equal 45

Physics
Find the speed at which Superman (mass=88.0 kg) must fly into a train (mass = 17998 kg) traveling at 60.0 km/hr to stop it. Running into the train at that speed would severely damage both train and passengers. Calculate the minimum time Superman must take to stop the train, if...

Health
Thanks again!

Health
Smoking marijuana over a long period of time can cause a. chronic bronchitis and damaged lung tissue. b. Alzheimer's Disease. c. tongue cancer. d. all of the above. D?

Health
Thank you!

Health
Indirect pressure is a. a strategy to avoid doing something you don't want to do. b. being swayed to do something because people you look up to are doing it. c. someone trying to convince you to do something you normally wouldn't do. d. none of the above. B?

science
A 3.00- flask is filled with gaseous ammonia, . The gas pressure measured at 28.0 is 1.25 . Assuming ideal gas behavior, how many grams of ammonia are in the flask?

physics
2Tsin16.9=mg=0 2Tsin16.9=mg T=mg/2sin16.9 T=54(9.8)/2sin16.9 T=529.2/sin16.9 T=529.2/.581 T=912

physics
a ball dropped from a window strikes the ground 2.99s later. how high is the window?

geometry
given constant perimeter (people),Irene made a rectangle with an area (tables) of 196 sq. units. she finds that this is the largest area (greatest number of tables) possible for the given perimeter. Irene drew a rectangle with an area of 196 sq. units. she finds that this i th...

geometry
A parallelogram has sides of length 3 and 5 and a diagonal length 10. is the quadrilateral a rectangle? please explain

politics
Which president closed the tunnel between his country and palestine? The tunnel was a secret passage way in which the palestinies got food and other helpful sources.

politics
what are some famous dictators that were either removed or killed and what did they do?

Politics
Why was it necessary to remove Hosni Mubarak as the president of Egypt?

math?
9/54 ito percent

math?
39/40 ino percent

math?
4/11 into a prcnt

chemistry
H2 (g) is made when 8.5 grams of Li is placed in water. The reaction also creates Lithium Hydroxide. Li + H2O --> LiOH + H2 How much H2 (g) is made? (the (g) means gas!)

Chemistry
How many moles of ethanol is contained in 250.0 ml of a 1.90M ethanol solution? A. none of these B. 7.60 C. 475 D. 0.475

English
If I wanted to say--This is Jos's backpack. Would the comma go between the s's as I have included, or would there just be a comma after the s?

math
jada baked 4 trays of cookies with a dozen on each tray. she and her brother ate 6 of the cookies while they were still warm. otis baked 4 trays of cookies . he started with one dozen on each tray then his mom removed 6 cookies from each tray to send to otis's grandmother ...

reading
what are parts of a poem?

math please help
temperature before change = 40 degrees temperature change =up 7 degrees identify the number model below that is correct. then cross out the incorrect model and complete the correct one. 40+7=? or 40+(-7)=?

math please help!!
i will make it more clear 10-_?_= 20

math please help!!
10-blank=20

math
7/1

math
2.5/30 is your scale so 2.5/30=8/x a proportion, so cross multiply 2.5x=240 x=96 yeah i think you're right

Math
distribute 12x-3<2 add 3 12x<5 divide by 12 x<5/12

geometry
the lengths of the diagonal of a rhombus are 2 in and 5 in. find the measure of the angles of the rhombus to the nearest degree. if it helps, we are learning how to use tangent right now!

Writing
Hi! Try this Look up the Song, "How do you like me NOW" see how they say it. Then you will know which one to use. Hope I helped! :-)

US history
To what extent and for what reasons did the policies of the federal government from 1865 1900 violate the principles of Laissez-Fair which advocated minimal government intervention in the economy?

calculus
assume f(x)=-2x+8 and g(x)=5x. What is the value of (f-g)(2)? i got -6 but i don't think that's right...is it?

Elementary Math
What if we made a pattern by joining pentagons? If the length of each side of the pentagon is 1 unit, then what would be the perimeter of n pentagons joined together? Note: The perimeter is the distance around the outside of the figure.

Math
poo poo

Math
maia i hoped your right p.s. answer is H

Math
30 plus 30

physics
I have for about an hour and a half and I am still not getting the right answer.

physics
a 10.0-g object moving to the right at 20.0 cm/s makes a elastic head-on collision with a 15-g object moving in the opposite direction at 30.0 cm/s find the velocity of each object after the collision.

math
Is x<z<y what you are looking for?

AP chemistry
If 25.0g of water are decomposed at RTP how would you find the volume of hydrogen gas produced?

math
i have a math competition next saturday can some please give me advice on how to study. some sites snd stuff i really need help for algebra thank you in advance

math
i have a math competition next saturday can some please give me advice on how to study. some sites snd stuff i really need help for algebra thank you in advance

math
thank you

math
i don't understand

math
in algebra if you have a problem like -2+2 will the answer be negative or positive? can you please explain why

7th grade social studies
1. what are coureur de bois? 2. what are mjssionary jobs? 3. what was louisiana named after? 4. if new amsterdam is now new york-then what is new nethrlands called today?

spanish
Thank you! I am going to pursue this!

spanish
"Mi abuela está en el hospital." "Qué lástima! ____" a. No vale la pena. b. ¿Qué te duele? c. No lo sabía. d. ¿Qué tienes? D? My teacher says A, but it doesn't make sense to me.

spanish
Thanks for checking this over!

spanish
She says the doctor is talking about parts of the leg.

spanish
"Doctor Pérez, me duele mucho la pierna. ¡Ay!" "Miguel, ¿te duele _____ ?" a. la derecha o la izquierda b. el derecho o el izquierda c. la morada o la rosada d. la quinta o la séptima A? My teacher says it is D. What do you think?

Math help
It has been found that 60 percent of homes subscribe to a cable service including the program "Cooking with Math". However, of these subscribers, 18 percent never watch "Cooking with Math", while 15 percent claim to watch it more than 5 times per week. Find...

english
Thank you!

english
The essayist's role is to a. study a subject from various points of view. b. put together a believable plot. c. present an accurate account of an event. d. ridicule those who disagree with his or her opinions. A?

Physics
There is a 1.2 m distance between a crest and an adjacent trough in a series of waves on the surface of a lake. In 30s, 35 crests pass a buoy anchored in the lake. What is the speed of these waves?

Physics
There is a 1.2 m distance between a crest and an adjacent trough in a series of waves on the surface of a lake. In 30s, 35 crests pass a buoy anchored in the lake. What is the speed of these waves?

Chemistry
describe how you would make a 2.5L of a .100M KCL solution from a 5.5M stock solution

biology
Thanks

biology
Which of the following is NOT a function of hormones? a. initiate behavior and reproduction b. coordinate the production and use of energy c. maintain nutrition and metabolism d. react to stimuli from outside the body B?

5th grade
what are some features geographers can use to define a region?

biology
Thank you

biology
The brain stem is responsible for a. directing information in the brain and secreting hormones. b. regulating vital functions and memory. c. motor processing and regulating homeostatic functions. d. sensory processing and regulating balance. B?

biology
OK, thanks!

biology
When an impulse moves down the axon, a. sodium ions first rush out of the cell. b. a small part of the axon momentarily reverses its polarity. c. the resting potential of the cell does not change. d. potassium ions are pumped into the axon. B?

biology
Thank you, again

biology
The function of neurons is to a. maintain a difference in electrical charge across the cell membrane. b. have specific ions cross the membrane through ion channels. c. maintain a membrane potential with charged ions on either side of the cell membrane. d. all of the above D?

biology
Thanks

biology
The mouth, small intestine, and kidneys have functions that involve the a. digestion of food, synthesis of vitamins, and filtering of the blood. b. intake, digestion, absorption, and elimination of food and its wastes. c. secretion of bile, digestion of food, and reabsorption...

Pre-Algebra
Is this the equation I should use? How do I solve this? 30ft = L-6ft + L(2/3) + L

Pre-Algebra
I need to solve for the longest section = L

Pre-Algebra
30 ft pipe is broken in three pieces. The shortest piece is 6ft. shorter than the longest piece. The medium length piece is 2/3 the length of the longest

spanish
Thanks!

spanish
"¿Tienes que reciclar _____ en tu comunidad?" "Sí, lo tengo que reciclar." a. el cartón b. las latas c. las botellas de plástico d. los periódicos A?

spanish
Thank you! That was my last question for the course.

spanish
"¿Piensan ver ese programa de entrevistas más tarde?" "Sí,_____ después de las noticias." a. la pensamos ver b. pensamos verlo c. las piensan ver d. lo piensas ver C?

spanish
Thank you both!

spanish
"Quién hace tu cama?" "Pues, yo ____." a. no hago nada b. lo hago c. la hago d. me gusta hacer D?

7th grade math
30=12d Divide both sides by the co-efficient. 12/12 leaves you with d. 30/12 leaves you with 2.5 D=2.5 Check your work. 30= 12*2.5 12*2.5= 30 30=30

spanish
Thank you for the help!

spanish
How does this look as an invitation? la fecha:domingo, 14 de Agosto la hora:2:00, de la tarde el lugar:mi casa-157 parque avenida en Woodstock ¡Feliz cumpleaños, Calico! Doy la fiesta el cumpleaños para mi el gato. Traes tu gato. No elegante, prefiero llev...

spanish
¡Muchas Gracias!

spanish
"Qué les dan Uds. a los gemelos para su cumpleaños?" "Generalmente ________ dinero." a. les damos b. les dan c. nos damos d. les doy D?

spanish
Thank you!

spanish
"Mamá, quiero saber qué me dan tú y papá." "Yo,____ unos aretes de México; el regalo de papá va a ser una sorpresa." a. te damos b. te doy c. me dan d. le dan B?

spanish
Thanks for the help!

spanish
"¿Qué me dices?" "____ que tengo razón." a. Os decimos b. Me dices c. Le dices d. Te digo D?

O.Chem
Only a substitution product is obtained when the compound 1-bromo-2,6-dimethylcyclohexane is treated with sodium methoxide. Draw the substitution product and explain why an elimination product is not obtained.

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