Wednesday
March 1, 2017

# Posts by LILY

Total # Posts: 1,524

Chemistry
You are investigating the effect of strong base on the solubility of zinc hydroxide, Zn(OH)2 (s). (Ksp= 3 x 10- 15 for Zn(OH)2 (s)) You prepare 1.0 L solution of 0.10M NaOH and add excess zinc hydroxide, Zn(OH)2 (s). Instead of suppresing the solubility, you observe extra ...
April 27, 2016

Chemistry
The molar solubility of magnesium chloride in water is 0.23 M. What is the numerical value for Ksp for MgCl2? Suppose you wanted to reduce the concentration of dissolved Mg2+ to 0.00537 M by adding NaCl. What concentration of NaCl would you need?
April 27, 2016

Chemistry
Consider the titration of a 50.0 mL 0.500 M F- with 0.500 M HCl. The pKa of HF = 3.46 and the pKb of F- is 10.54. Calculate the pH at the following volumes of HCl added. 1. Vsa= 0.00 mL of 0.500 M HCl 2. Vsa= 25.0 mL of 0.500 M HCl 3. Vsa= 49.5 mL of 0.500 M HCl 4. Vsa= 50.0 ...
April 27, 2016

Engilsh
you can easily find it on Wikipedia.
April 25, 2016

Engilsh
Electronic mail, most commonly called email or e-mail since around 1993, is a method of exchanging digital messages from an author to one or more recipients. Email operates across the Internet or other computer networks. Some early email systems required the author and the ...
April 25, 2016

respiratory.. correct
April 25, 2016

MATH!
There are 30 students in the gym. At least 16 of them are girls. Write an inequality to represent the number boys in the gym.
April 20, 2016

Math
Ms.Sue, where is the 9 coming from?
April 20, 2016

Math
Directions: write and solve an algebraic equation or inequality for each problem. 1. Mabel has a total of 54 beads. Some are black and some are white. The ratio of the number of black beads to the number of white beads is 7:2. How many more black beads than white beads are there?
April 20, 2016

Math
Directions: write and solve an algebraic equation or inequality for each problem. 1. Mabel has a total of 54 beads. Some are black and some are white. The ratio of the number of black beads to the number of white beads is 7:2. How many more black beads than white beads are there?
April 20, 2016

Math
X>16 is this right
April 20, 2016

Math
There are 30 students in the gym. If at least 16 are girls, write an inequality to represent the number of boys in the gym.
April 20, 2016

physics
A car with a mass of 1100kg can accelerate on a level road from rest to 2m/s in 14sec.what is the steepest slope this car can climb.(hint:the plane is smooth.)
April 19, 2016

Math
Ms. Sue it doesn't say in the word problem
April 5, 2016

Math
Jenny bought scrapbook supplies for \$70.75. She paid \$5.66 in sales tax. What was the sales tax rate on the supplies? If necessary, round your answer to the nearest tenth.
April 5, 2016

Math
Thank you again :)
April 2, 2016

Math
So if your looking for time, you would do 112 (the distance) divided by 14 (the speed) right? Then you would get 8 minutes?
April 2, 2016

Math
A cyclist is traveling at a speed of 14 miles per hour. How long did it take the cyclist to travel 112 miles?
April 2, 2016

Math
Ok thanks : ))
April 2, 2016

Math
I'm in 6th grade and I have to show my work. However, Steve, I don't understand the work you gave me. Is there any other way you can tell me?
April 2, 2016

Math
Jenny bought scrapbook supplies for \$70.75. She paid \$5.66 in sales tax. What was the sales tax rate on the supplies? If necessary, round your answer to the nearest tenth.
April 2, 2016

Math
An airline is trying to promote its new Boston toAtlanta flight. The usual price of this flight is \$215. However, the airline is offering a 30% discount until the end of the month. How much will the flight cost after the discount?
April 2, 2016

Math
Sara wants to buy a necklace. The necklace has a list price of \$57, and the sales tax is 8%. What will be the cost of the necklace after tax is added? Round your answer to the nearest cost. (can you try and explain it to me using proportions)
April 2, 2016

Math
Terrance is traveling at a speed of 55 miles per hour. At this rate, how far will he travel in 2.3 hours?
April 2, 2016

Physics
If length a = 0.6 m width b = 0.8 m, Q = -6.0nC and q = 4.0nC, what is the magnitude of point P? LAYOUT: q is found on the bottom left corner of a square. point q is perpendicular to point Q from the top and from point P from the right, creating a 90 degree angle.
April 1, 2016

Math
A plastic jug contains 2g gallons of milk more than a carton of milk. The plastic jug and the carton contain(8g+6) gallons of milk altogether. How much milk does the plastic jug contain?
March 31, 2016

Math
Ling drove at an average speed of 78 km per hour for 45 minutes. She then increased her average speed by 6 kilometers per hour for 20 more minutes before reaching home. Find the total distance Ling traveled.
March 31, 2016

Cartesian Equation
Determine the Cartesian equation of each of the following planes: b) through the points (3,0,1) and (o,1,-1), and perpendicular to the plane with equation x-y-z+1=0 My teacher told me to find a direction vector, cross that with the normal, and set up my cartesian equation. I ...
March 29, 2016

Math
teach her a song from youtube or something
March 16, 2016

Science
Very late now, but yes I think that you have a great answer.
March 16, 2016

Lesson 13: Matter and Energy Unit Test
These answers are correct! Thanks. You're awesome.
March 14, 2016

psychology
Cornea is the first contact
March 14, 2016

psychology
Because you are bored one afternoon, you decide to try a little experiment. You open your eye very wide, extend your thumb, and then poke yourself in the e ure. Aside from being very foolish and in alot of pain, you may learn something about your eye when you engage in this ...
March 14, 2016

math
The angle of elevation from a boat to the top of a cliff is 42 degrees. When the boat moves 15 feet closer to the cliff, the angle of elevation increases to 54 degrees. How tall is the cliff?
March 13, 2016

Social studies
Correct.
March 8, 2016

Science
The trees leaves make a kind of cover that cover over the other plants in the rain forest. What is this part of the rainforest called?
March 7, 2016

Math
The ratio of the amount of money Jason had to the amount of money Wilson has was 12:13. After Wilson \$63, Jason had 3 times as much money as Wilson. How much money did Jason have?
March 7, 2016

Math
when the square of a number is increased by 10, the result is seven times the original number. find the number
March 6, 2016

MATH
The cost to manufacture a product is proportional to the quantity produced, with a cost of \$270000 dollars per day when 900 items are produced. The cost to store n items is proportional to the square of n, with a daily storage cost of \$6480 dollars when 900 items are stored. ...
March 2, 2016

Social Studies
????????????????????
March 1, 2016

chemistry
Imagine that you have a 5.50 L gas tank and a 3.50 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 155 atm , to what pressure should you fill ...
February 26, 2016

For each of the following levels of statistical significance, state how many times in 100 a statistically significant result would be expected to occur by chance. .10 .05 .025 .01
February 25, 2016

Math
5 and 4900 ratio
February 24, 2016

This is the last question of my quiz, I need help with it. I need just one question answered. Question: The angles opposite the congruent sides of an isosceles triangle are congruent. Find the value of x in the triangle. Show all your work. The triangles' value is 70 ...
February 19, 2016

Math
A. 2.5*3.14=7.85 ft rounded to 8
February 17, 2016

Organic Chem
Predict the water solubility of the following organic molecules: carotatoxin (neurotoxin isolated from carrots)
February 11, 2016

Math
Thank you so much! :)
January 20, 2016

Math
Brody deposited \$500 into an account that earns 4.2% interest compounded annually. He makes no additional deposits and no withdrawals. Approximately how much interest will the account have earned after 7 years? A \$167 B \$420 C \$542 D \$665 I think the answer is D. But can ...
January 20, 2016

Language
The correct answers are as follows. 1. B 2. C 3. C 4. C 5. D I just took it and got 100% trust me. :)
January 18, 2016

The Watson go to Birmingham 1963?
1. Which of the following passages from the novel best describes the setting? A. It was one of those super duper cold Saturday. B. One of those days that when you breathed kind of hung frozen in the air like a hunk of smoke and you could walk along and look exactly like a ...
January 17, 2016

Math
SAT dread. 1. If n and p are integers greater than 1 and if p is a factor of both n+3 and n+10, what is the value of p? a. 3 b.7. c.10 d. 13. e 30 2. The company sends a team of 3 plumbers to work on a certain job. The company has 4 plumbers and 4 trainees. 1 team has 1 ...
January 16, 2016

languege
Well, she says "How dreary - to be - Somebody!" So, I would say C.
January 15, 2016

Physics
A negatively charged balloon has 4 μC of charge. How many excess electrons are on this bal- loon? The elemental charge is 1.6 × 10−19 C. Answer in units of electrons.
January 14, 2016

science help
correct
January 13, 2016

Math
a particle moves along x-axis so that its position at any t>=0 is given by x=arctant. What is the limiting position of the particle as t approaches infinity?
January 11, 2016

Spanish
Preterite or imperfecto- pls check Los estudiantes ( tomaban/ tomaron) apuntes mientras la profesora ( hablaba/ hablo) Answers: tomaban and hablo
January 6, 2016

Math
Maddy’s loaf tin has three partitioned areas in which to bake three loaves. The outside of the tin along with the partitions is made of 80 inches of material. The area of the entire loaf tin is 192 in2. What are the possible outer dimensions of the loaf tin?
December 16, 2015

Physics
Take the mass of the Earth to be 5.98 × 1024 kg. If the Earth’s gravitational force causes a falling 44 kg student to accelerate downward at 9.8 m/s2, determine the upward accelera- tion of the Earth during the student’s fall. Answer in units of m/s2.
December 16, 2015

Physics
The average speed of an orbiting space shuttle is 19700 mi/h. The shuttle is orbiting about 125 mi above the Earth’s surface. Assume the Earth’s radius is 3963 mi. How long does it take to circle the earth? Answer in units of h.
December 10, 2015

Physics
A jogger runs in a straight line with an average velocity of 5.4 m/s for 2.3 min, and then with an average velocity of 5.7 m/s for 1.2 min. What is her total displacement? Answer in units of m.
December 10, 2015

Physics
Two lifeguards pull on ropes attached to a raft. If they pull in the same direction, the raft experiences a net external force of 363 N to the right. If they pull in opposite directions, the raft experiences a net external force of 147 N to the left. Draw a free body diagram ...
December 10, 2015

Math
A commuter has 245 dollars in his commuter savings account. this account changes by -15 dollars each week he buys a ticket. In one time period, the account charged by -240 dollars. For how many weeks did the commuter buy tickets How much must he add to his account if he wants ...
December 10, 2015

Physics
Suzie (of mass 84 kg) is roller-blading down the sidewalk going 34 miles per hour. She notices a group of workers down the walkway who have unexpectedly blocked her path, and she makes a quick stop in 1.1 seconds. What is Suzie’s average acceleration? Answer in units of m...
December 10, 2015

Physics
A force is applied to a 1.4 kg mass and pro- duces 2.5 m/s2 acceleration. What acceleration would be produced by the same force applied to a 12.2 kg mass? Answer in units of m/s2.
December 10, 2015

English
has anyone taken the red badge of courage unit test? I really need help! Thanks!
December 10, 2015

Science
Guys do your own work. When you get into college and you don't know anything, don't say we told you so.
December 7, 2015

Math
What the heck... J-kid... you ARE crazy. Lmao.
December 7, 2015

Science
Thank you MSM! You got me 100% Tysm!! :)
December 2, 2015

Math
An artist mixes blue and yellow to make a shade of green. The ratio of blue to yellow is four to one. The color blue makes up what fraction of the mixture?
December 2, 2015

math
Hi Ms. Sue, I know this wasn't my problem but I looked up this problem for help, and you helped me out a lot! And I just wanted to thank you! :)
November 30, 2015

math
Reflecting over QV and RW
November 27, 2015

Math
One-quarter of a bread recipe calls for 2/3 cup of bread flour. How many cups are needed per recipe?
November 22, 2015

Math Asap
@steve so it would be a integer
November 18, 2015

Math Asap
When adding √9 and -7, which type of number is the sum? A.irrrational B.whole number C.radical D.integer My answer is A. CAN you check please @Ms.Sue
November 18, 2015

chemistry
CaCl2=110.98 H2O=18.016 Not sure what next
November 16, 2015

science plz help me asap
pancake is 100% correct! THANK YOU SO MUCH! :D
November 10, 2015

Look I'm taking the test now and I'll post after the correct answers. Mmkay?
November 3, 2015

God you guys are so stupid. READ THE TEST, DO THE RESEARCH. Damn, is it really that hard?
November 3, 2015

Biology
How does chloroplasts move when placed in a different solution? I understand that chloroplasts are just randomly scattered through out the cytoplasm, but what does placing the cell in a different solution that can be hypotonic or hypertonic affect the placement of chloroplasts?
October 24, 2015

CHEM redox equations help!
I think theres a mistake in the book its supposed to be C2O4^2-. and it says it says the answer's supposed to be 2MnO4^- + 3C2O4^2- + 4OH- => 2MnO2 + 6CO3^2- + 2H2O but I didn't get that.
October 22, 2015

CHEM redox equations help!
MnO4 ^- + C2O2 ^2- = MnO2 + CO3 ^2- how would you balance this in basic solution? I keep getting the wrong answer.
October 22, 2015

Educational Technology.
Yup, right.
October 22, 2015

Chemistry
Name the organic product of the following nucleophilic substitution reaction OH-+CH3I
October 18, 2015

math probability question
If a player rolls 2 dice and gets a sum of 3 or 11 he collects \$15. if he gets a sum of 12 he gets \$3. the cost to play the game is \$2. let x be the net money gained by the player. a. construct the prob distribution of the random variable x b. find the expected net/gain loss ...
October 14, 2015

health
Heredity, activity level, and body composition. A, B, and D.
October 13, 2015

Social Studies
Oh yeah, B?
October 1, 2015

Social Studies
1. The climate along the equator in Africa is ____. A. hot and dry B. hot and wet** C. wet and dry D. cold and dry 2. What is one way that people have changed the environment in parts of West and Central Africa? A. They have made all land arable. B. They have cut down trees ...
October 1, 2015

Social Studies
Ooh...so 1 is a savanna?
October 1, 2015

Social Studies
Okay is 1. grasslands?
October 1, 2015

Social Studies
1) A fairly dry area between the Sahara Desert and the wetter regions to the south is the ___. A. savanna B. Sahel C.grasslands D. Congo ^ Is it D, Congo? 2. Which African climate zone is home to the savanna? A. tropical wet B. tropical wet and dry C. semiarid D. arid ^Is it C...
October 1, 2015

Social Studies
NVM! IT’S C
September 23, 2015

Social Studies
2) An econmy’s total output divided by the total population is called: a- gross national product b- circular flow** c- GDP per capita d- net export
September 23, 2015

Math
Hi! I need help with this question: Directions: Find the rest of the answers for the table and then find the estimate for it's limit. Problem: lim x→0 cos(3x-1)/3x Table: (top row) -0.1, -0,01, -0.001, 0.01, 0.1 (trying to find what the bottom would be for f(x) row.
September 22, 2015

Algebra 2
Can someone explain this exponential expression problem to me please? (3x/y^3)^-3 So I got the answer (1/27x^3)/ 1/x^9. Is this correct and if not where did I go wrong?
September 17, 2015

physics
A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 29.0 m. Next, the student stands at the edge of the pool and uses a ...
September 16, 2015

Thank you so much! That really helped!
August 25, 2015

math
If x + y + z = 26, find the value of (y-2) + (z+3) + (x-3). I was so confused on this question and didn't even know where to start. Please help me!
August 25, 2015

Math
would it be 21?
August 24, 2015

Math
the sum of 6 and 4 times a number (n) equals 90
August 24, 2015