Wednesday
September 3, 2014

Posts by lacey


Total # Posts: 120

english 11
In which sentence is the underlined phrase a prepositional phrase functioning as an adjective? My sister was born in Chicago. She went to boarding school in Coventry. My sister moved away in 2009. Her grades gave my sister a place in the top rank of her class. 7. Read the ...
January 7, 2014

english 11
In which sentence is the underlined phrase a prepositional phrase functioning as an adjective? My sister was born in Chicago. She went to boarding school in Coventry. My sister moved away in 2009. Her grades gave my sister a place in the top rank of her class. 7. Read the ...
January 7, 2014

chemistry
what is a catalyst
October 3, 2013

physics
What is the kinetic energy of each electron in a beam of electrons if the beam produces a diffraction pattern of a crystal which is similar to that of a beam of 1.00 eV neutrons? Note: The electron mass is 9.11 × 10–31kg; and the neutron mass is 1.67 × 10–...
July 12, 2013

math
convert 2.37 with a reoccurring 37 into a decimal
May 20, 2013

Ap chemistry
What is the approximate molar fraction of ethanol c2h5oh in an aqueous solution in which the ethanol concentration is 11.0 molal? A. 0.0011 B. 0.011 C. 0.170 D. 0.200 E. 0.600
May 8, 2013

7th grade math
sorry i havent learned this
March 18, 2013

Physics
a 60 kg boy on a sled reaches the bottom of a hill traveling at 8 m/s, if he comes to a stop at 20 m along this flat stretch of snow what is the coefficient of kinetic friction between the sled and the ground? (hint: find the acceleration first)
January 27, 2013

Physics
A glass is slid across a bar top and eventually comes to rest. if the coefficient of friction between the glass and bar top is .32 what is the acceleration it experiences?
January 27, 2013

Physics
What force of friction would be felt between a 5 kg sled and the ground if a 20 N force is needed to cause it to accelerate at a rate of 1.3 m/s squared?
January 27, 2013

Physics
A volleyball player serves the ball horizontally with a speed of 23.8 m/s. How far will it have dropped when it reaches a distance 9.1 m
October 4, 2012

AP Chemistry
If a metal ore contains 21.4% pure metal, how many pounds of pure metal can be obtained from 59 pounds of metal ore? Answer in units of pounds
September 19, 2012

AP Chemistry
I got 100.276. Do i divide that by 172?
September 19, 2012

AP Chemistry
14 carat gold has a purity of 58.3%. How many moles of gold are in 172 grams of 14 carat gold? Answer in units of moles
September 19, 2012

AP Chemistry
For the reaction ? N2H4+? O2 →? N2+? H2O , what is the maximum amount of N2 (28.0134 g/mol) which could be formed from 14.75 g of N2H4 (32.0452 g/mol) and 4.31 g of O2 (31.9988 g/mol)? Answer in units of g
September 19, 2012

AP Chemistry
When 0.055 moles of lead(II) nitrate are dissolved in enough water to make 803 mililiters of solution, what is the molar concentration of nitrate ions? Answer in units of M.
September 19, 2012

MATH
I don't know but i need help with the same question!!!....... A company sells cardboard that is 9 1/8 mm thick. Write an equation to solve for the number of sheets of cardboard, c, in a pile that is 255 1/2 mm thick. What must be done to both sides to solve the equation?
May 24, 2012

English
A B B A
May 13, 2012

Chem 2 Lab
Calculate the volume of a 0.150 M NaOH solution that will be required to neutralize all of the H+ ions in 0.400 grams of phosphoric acid?
April 25, 2012

Biology
Both, because of the reduction of nitrate to nitrogen gas makes it biological and chemical.
April 25, 2012

Science
On the second question kidneys secrete H+ ions when the pH becomes too low in the blood so the blood won't become too alkaline.
April 25, 2012

Chemistry
Consider the reaction CH4+ 2Cl2=CCl4. If .33 moles of CH4 is reacted with 1 mole of Cl2, how much CCl4 is produced?
April 12, 2012

chemistry
but how do i balcane the charges? i don't understand what to do with them. i know i am supposed to bring them down, but down where?
March 1, 2012

chemistry
How do you balance a chemical reaction word equation?!
March 1, 2012

geometry
1. A triangle has side lengths of 8, 10, and 12. what kind of triangle is it? 2. A triangle has side lengths of 3, 4, and 7. what kind of triangke is it?
January 12, 2012

Algebra
A box contains 15 blue marbles, 25 yellow marbles, 20 green marbles and 40 red marbles. How many ,arbles must you select to be sure that a green marble has been chosen ?
December 18, 2011

Algebra 2
Write a system of inequalities in which x and y are each greater than -3, but not greater than 2. Can someone please help???
October 27, 2011

Math
thank you so much!!!!!!!
October 9, 2011

Math
two cones have radii in the ratio 5:4 and height 2:3, determine the ratio of their volumes . where V=1/3pier^2h
October 9, 2011

civics
what is a good strategy for remembering 2 paragraphs of the constitution?
September 27, 2011

math
First, you have to change miles into feet. There are 5,280 feet in 1 mile. Next, you need to multiply 5,280 feet by 26 miles, to see how many feet are in 26 miles. The answer is 137,280. The last step is to divide 5,280 feet by 137,280 feet. This gives you roughly .0385 feet.
March 31, 2011

Stats
An instructor gives a test with 20 multiple choice questions. There are 4 responses per questions and only one choice correct. The test also has 30 True/False questions. Determine the probability a student randomly guessing on all questions and correctly answering no more than...
March 31, 2011

Grammer
2. I should of written down where(were) I last put them. 3.I don't want to(too) buy that. It's to expensive
March 23, 2011

Grammer
2. I (should’ve) written down where i last put them. 3 is correct 4. A evening out can be a great way to clear one's mind.
March 23, 2011

Grammer
4.A evening out can be a great way to clear one's mind.
March 23, 2011

Grammer
2. I should of written(wrote) down where I last put them. 3.I don't(do not) want to buy that. It's to expensive number 4 is correct
March 23, 2011

Grammer
Can you help me with these sentences.Review the following sentences. Some of them are correct, whereas others contain an error with a commonly confused word. 1.The diplomats are doing what they can to restore peace. 2.I should of written down where I last put them. 3.I don&#...
March 23, 2011

Science
On a day with an air temperature of 75°F, you read the psychrometer and determine the relative humidity to be 74%. A sudden weather change (that does not affect the actual moisture content of the air) reduces the relative humidity to 70%. What was the temperature change?
February 28, 2011

Intermediate Algebra
I have a 72% in this class, but I think I made an F on my final, what is my final grade? please help me!!!
December 15, 2010

algebra
Describe the steps to graph the direct variation equation y = – 3x. In the formula d = rt, what do each of the letters stand for and how do they relate?
December 11, 2010

statistics
A random sample of 20 hogs on farmer Brown's hog farm had an average weight of 350 pounds and a SD of 70 pounds. Find 95% confidence interval estimate of the mean weight of all farmer Brown's pigs.
December 8, 2010

Physics
Ice (initially at 0 degrees celcius)is added to 0.75 L of tea at 20 degrees celcius to make the coldest possible iced tea. If enough ice is added so the final mixture is all liquid, how much liquid is in the pitcher when this condition occurs?
December 6, 2010

Cultural Diversity
what is the best way to enplain orientalism and the characteristics of it?
December 2, 2010

Physics
A solid ball of mass m rolls along a horizontal surface with a translational speed of v. What percent of its total kinetic energy is translational?
November 14, 2010

Math
50.
November 5, 2010

physics
A yo-yo of radius 10 cm and mass 1 kg is dropped from rest. What is the instantaneous torque on the yo-yo if I hold the string with my fingers?
November 4, 2010

PHYSICS ---HELP!
Consider a hoola-hoop of radius R and it is spinning about its symmetry axis at a constant angular velocity. Now, I double its mass and halve its angular velocity. What is the new angular momentum in terms of the initial angular momentum?
November 1, 2010

PHYSICS ---HELP!
I get something close to that.
October 25, 2010

PHYSICS ---HELP!
A 3.6 m diameter merry-go-round is rotating freely with an angular velocity of 0.78 rad/s. Its total moment of inertia is 1700 kg\m^2. Four people standing on the ground, each of mass 62 kg, suddenly step onto the edge of the merry-go-round. 1. What is the angular velocity of ...
October 25, 2010

Finance
Mary needs $9000 in 7 years. What amount can she deposit at the end of each quarter at 6% interest compounded quarterly so she will have her $9000?
October 20, 2010

physics
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 1.7 cm and accelerates at the rate of 6.9 rad/s^2, and it is in contact with the pottery wheel (radius 27.0 cm) without ...
October 19, 2010

2nd time posting bc i still need HELP! PHYSICS!!!!
I had a problem similar to this but I was using -11.4 m/s and 1.35 s. You can use my calculations below and just plug in your numbers. Velocity of diver just before hitting the water,Vf = - 11.4 m/s Time, t = 1.35 s Velocity of diver before 1.35 s = Vi Vf = Vi - g t - 11.4 = ...
September 29, 2010

physics
A person jumps from the roof of a house 3.6 -m high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.70 {\rm m}. If the mass of his torso (excluding legs) is 46 kg. Find the average force exerted on his torso...
September 29, 2010

physics/ math
I figured this out. For those that may need help with a question like this. Because of the North direction being the displacement vector... there was a 90 degree angle. So... (1.1)(cos90) = 0 (1.1)(sin90) = 1.1 Answer: (0, 1.1)
September 24, 2010

physics/ math
A student bikes to school by traveling first d_N = 1.10 {miles} north, then d_W = 0.500{miles} west, and finally d_S = 0.200 {miles} south. You will now find the same quantity algebraically, without the need to use much geometry. Take the north direction as the positive y ...
September 24, 2010

Physics
A student bikes to school by traveling first d_N = 1.10 miles north, then d_W = 0.500 miles west, and finally d_S = 0.200 miles south. You will now find the same quantity algebraically, without the need to use much geometry. Take the north direction as the positive y direction...
September 23, 2010

Science
what mammal order has the following dental formula: 006/406?
May 5, 2010

history
Coolidge was known as a supporter of big business. what are three examples?
March 30, 2010

probability
This is wrong!! Spades are ace through K which is 13 plus the other 3 kings which is 16, not twelve.
March 15, 2010

chemistry
How many milliliters of .50 M NaOH solution are required to titrate 40.0 mL of a 0.10 M H2SO4 solution to an end joint?
March 6, 2010

math
x over x+2 and x=3
February 4, 2010

MATH
0
February 4, 2010

algebra
o Systems of equations can be solved by graphing or by using substitution or elimination. What are the pros and cons of each method? Which method do you like best? Why? o What circumstances would cause you to use a different method?
January 26, 2010

science
How does a sunflower's energy get transferred?
January 4, 2010

Ruminant Nutrition (college)
I'm studying for a Ruminant Nutrition final exam and have a couple essay questions that I'm really struggling with... - How do ruminants fit into sustainable food production systems? - Assume that you can genetically modify a rumen microbe to perform any reaction (e.g...
May 4, 2009

Probability
Two brothers enter a race with 5 others. Racers draw names to determine their starting positions (1 to 6). What's the probability that the older brother will start in lane 1 with his brother directly beside him?
April 28, 2009

logic
determine the validity of the next arguments by using Euler circles, then translate the statements into logical statements using the basic connectives, and using truth tables, determine the validity of the arguments. Compare your answers. (a) No A is B Some C is A Some C is ...
April 6, 2009

Chemistry
A 67gr mass of solid iron is heated by a flame until the temp of the iron equals the temp of the flame. The solid iron is then dropped into 250gr of liquid water at 26 degrees C. After 5 mins, the iron and the water are both at 47 degrees C. Specific heat: Iron- .451 Water- 4.184
March 30, 2009

science
what is the purpose of the ridge on the roof?
February 22, 2009

science
explain the importance of convection currents to pond life
February 22, 2009

Math - last one
yes, but why is it t/3?
November 2, 2008

Math - last one
I just have one more question. I need to find the equation for the following word problem: a group of yeasts cells grows by 75% every 3 hours. At 9 a.m., there are 200 yeast cells. Write an equation that models the number of yeast cells after 9 a.m. So far I've worked out ...
November 2, 2008

Math - I really need help, please.
oh, thank you so much!
November 2, 2008

Math - I really need help, please.
A town has a population of 8400 i 1990. Fifteen years later, it's population grew to 12500. Determine the average annual growth rate of this town's population. I really don't understand this problem. I've been going at it for hours and all I've come to is ...
November 2, 2008

Geometry
Please help solve for: solve for x: m < 2=70 and m < 8 = 6 x - 2
October 10, 2008

nonfiction
Why in the world would Mrs. Sue put incorrect answers on here? Mrs. Sue, I understand your beliefs in students doing their own work... but, that doesn't give you the right to sabotage a students grade. If you truely want to help, volunteer in a public school to students ...
October 1, 2008

pre algebra
a rectangle measures 3.9 cm by 9.1 cm what is the area of the rectangle? (a=lw)
September 25, 2008

Geometry
Thanks so much!
August 24, 2008

Geometry
Find the value of the variable and ST if S is between R and T. RS=7a, ST=12a, RS=28 No clue what so ever how to do this.
August 24, 2008

Geometry
so...its lines, lines, and points?
August 20, 2008

Geometry
plane lines lines i think thats what they are..not sure
August 20, 2008

Geometry
VISUALIZATION Name the geometric term(s) for: a paritally-opened news paper woven threads in a piece of cloth satellite dish signal
August 20, 2008

Math
2/9
August 20, 2008

Geometry
nvm, i figured it out i think
August 20, 2008

Geometry
Name at least four ordered pairs for which the sum of coordinates is -2.
August 20, 2008

English
A thesis statement is a focused selection of text that can be anywhere from just one sentence to a few pages in size that clearly delineates the argument that will be taken in a proposed paper to be written. A thesis statement should be prepared in advance for all types of ...
August 19, 2008

Chemistry
Homogeneous Mixtures: salty water Heterogeneous Mixtures: sandy water
August 19, 2008

Critical Thinking
A personal mission statement is a brief description of what you want to focus on, what you want to accomplish and who you want to become in a particular area of your life over the next one to three years. It is a way to focus your energy, actions, behaviors and decisions ...
August 19, 2008

Physical science
the volume of gas is your dependent because it changes according to the temperature
August 19, 2008

math
how do you make a chart or a table?
August 19, 2008

AP Bio
FOOD CHAINS FOLLOW A SINGLE PATH AS ANIMALS EAT EACH OTHER. EXAMPLE: GRASS (is eaten by a) GRASSHOPPER (which is eaten by) a FROG (which is eaten by a) SNAKE (which is eaten by a) HAWK -------------- FOOD WEBS SHOW HOW MANY ANIMALS ARE INTERCONNECTED BY DIFFERENT PATHS. ...
August 19, 2008

Algebra
u must be really really smart, u've answered most of ppls questions, including my own
August 19, 2008

Algebra
is it 70?
August 19, 2008

Physics
can scientific laws be changed by a vote?
August 19, 2008

Physics
Can scientists from other countries change what physicists in the United States think? Need help ASAP work due tomorrow XD
August 19, 2008

sci/275
lakes, rivers, glaciers
August 19, 2008

Solving for Variables
1. 2T^2 + 3KT - 3K = 2 (for T) 2. x^3-4x^2 + 6 = 0 (for x)
August 5, 2008

calculus
how do you find the dy/dx of the square root of x minus the square root of y equal to 10? You have to use implicit differentiation.
March 23, 2008

math
a punch recipe calls for 1 .5 liters of juice .how many millilitres is this
March 10, 2008

SAT Math... again
I asked two questions yesterday, and thankfully, bobpursley answered the latter. I accidentally typed in the first question wrong, so I'd really appreciate it if someone helps me out. Thank you, and have a good day :) 1. Kevin is 3 years younger than Nora. If n represents ...
October 15, 2007

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