Monday
April 21, 2014

Posts by anonymous


Total # Posts: 68,227

chemistry
How you solve P4(s)+5O2(g)------>P4O10(g) .if 2.50 grams of phosphorus is ignited in a flask how many grams of P4O10 are formed ?

Science
In the temperature forest what are interactions with other organisms

Science
how does interdependence of organisms within an ecosystem aid survival in a temperate forest

math
Please help!pam is mixing 3 1/5 batches of paint.if one batch calls for 2 3/4 tablespoons of detergent to add to the tempura powder,how many tablespoons of detergent will pam need?

world geography
The statement, "People celebrate their birthdays on January 1st" is an example of what type of region?

english
How does an inclined plane impact work?

Math
Can u help me on this you have to convert inches into feet 1 inch = 8 feet and how do I do this with 2 1/4inches and also 1/10inches

Chemistry
a solution is prepared by dissolving 3.7500grams iron(III) oxalate in enough water to make 125.00mL of solution. 1. what is the molar concentration of iron(III) oxalate in this solution? 2. what is the molar concentration of oxalate ions in this solution?

Chemistry
a potassium dichromate is prepared by 0.3525grams of K2Cr2O7 is enough water to yield 250.0mL of solution. a student then measures 10.00mL of an unknown solution of Fe2+ into an erlenmeyer flask and dilutes with 90mL of 1.0M hydrochloric acid. she then titrates this sample wit...

Physics
The impulse given to a ball with mass of 4 kg is 16 N s. If the ball starts from rest, what is its final velocity?

chemistry
The molarity of an aqueous solution of barium hydroxide is determined by titration against a 0.335 M nitric acid solution. If 32.8 mL of the base are required to neutralize 21.5 mL of nitric acid, what is the molarity of the barium hydroxide solution?

Math
Convert 1-/10 1 inch=8 feet

English
Paper Bags — A Great Choice Am I supposed to use an em dash for the sentence above?

English
Metaphor for repugnance His biggest repugnance is guest who are always late

Algebra Question~!
The quadratic formula would also work here, right?

geometry
What is the vertex angle of an isosceles triangle with sides that measure of 22, 22, and 28 millimeters.

English
Metaphor for confusion The math problem was a maze at trying to solve.

English
Metaphor for repugnance His biggest repugnance is guest who are always late

Math
1. Mackenzie spent a lot of time on her project for Columbus Day. On Monday she worked for 2 hours and 33 minutes on making a poster. On Tuesday she worked for 1 hour and 28 minutes drawing a picture of Columbus. On Wednesday she spent two hours building a model of a Taino vil...

biology
Sperm cells are moved out of the testes in the

Science
A______________________ is a tool used to capture the energy in sunlight. Recycling aluminum cans and taking shorter showers are two ways to practice the ________________________ of natural resources. Some plastics are made from corn. These plastics are biodegradable. This mea...

English
I need to write a metaphor for the word Repugnance. I definitely am lost on this one.

chem Help
At equilibrium, the concentrations in this system were found to be [N2]=[O2]=0.200 M and [NO]=0.500 M. N2 + O2= 2NO If more NO is added, bringing its concentration to 0.800 M, what will the final concentration of NO be after equilibrium is re-established?

Math
Did I get the average speed and nine days traveled correct

Math
6. Columbus' ships covered approximately 144 miles a day. How many miles would they have traveled in nine days? What was the average speed per hour? If there were two days when the weather did not permit movement, how many miles a day would they have to travel to make up t...

calculus
Twenty feet wire is used to make two figures? What is the maximum areas of enclosed figures.

socials TO MS SUE OR ANYONE
List the factors that supported the confederation in the canada colonies in the 1800s and the factors that went against the confederation in the colonies. PLEASE help ASAP!!!!

statistics
Survey on concern for criminal in a survey 3 of 4 students said the court show too much concern for criminals find the probability that 3 out of 7 randomly selected students will agree with this statement

sociology
5. Which evidence would best support the claim that prayer in school should be allowed? @This is a holistic problem answered by studying various aspects of chapter 2. (Points : 1)

arithmetic
Select the first five terms in the arithmetic sequence an = 4n, starting with n = 1.

Chem Please Help
Thanks!

Chem Please Help
If a 2.30 M sample of A is heated to 500 K, what is the concentration of B at equilibrium? A<-> 2B Kc= 5.04x10^-6 at 500k

math
When I am rounded to the nearest ten I am 40 the sum of my digits is 8 what two numbers can I be

Programing
Write a full program that reads in an arbitrary sequence of integers from the standard input, and writes them to the standard output in sorted order and with all duplicates removed. You may assume the input contains at most 100 integers . What I have is #include<iostream>...

Programing
Given two 3x3 arrays of integer , x1 and x2 , write the code needed to copy every value from x1 to its corresponding element in x2 . So far I have void main() { int x[3][3]; for(i=0; i<x1, i++) { for(j=0; j<x2, i++) { x[i][j]=i; cout<<x[i][j]<<" "; ...

physics
The figure below shows a claw hammer being used to pull a nail out of a horizontal board where θ = 32.2°. The mass of the hammer is 1.00 kg. A force of 125 N is exerted horizontally as shown, and the nail does not yet move relative to the board. Assume the force the h...

Physics
What element results if two protons and two neutrons are ejected from a radium nucleus?

college physics 2
A healthy astronaut's heart rate is 60 beats/min. Flight doctors on Earth can monitor an astronaut's vital signs remotely while in flight. How fast would an astronaut be flying away from Earth if the doctor measured her having a heart rate of 28 beats/min?

Science URGENT
He said he's not giving us the answers and I really need to check my answers all the time but I can't cause the answers don't come with the textbook. And I don't find it fair cause our math text books have the answers so why don't our science texts? But any...

Science URGENT
Ignore this question

Science URGENT
Is there any website or any way I can get the science probe 10 check your understanding answers cause I want to check my answers?

math
Find the percent if discount when the regular price for a DVD recorder is $250 and its sale price is $175

Science
The text book is called BC science probe 10 It's for grade 10

Science
Is there any website or any way I can get the science probe 10 check your understanding answers cause I want to check my answers?

math
Thank you so much! :D have a nice night

math
Please help! I am confused on what to do next. I subtracted the 700 by 560 and got 140 so then I divided by 700 and got 5?

math
What is the percent of discount on a television that originally sold for $700 and is now on sale for $560?

Math!
I have now noticed my error. Thank you!

English
Is this a complete sentence or a sentence fragment? "Applications truly welcomed."

Math
500 gallon sprayer that puts out 20 gallons of spray per acre. How many times will the sprayer have to be filled to spray 106.363 acres?

Math probability
Trevor's soccer bag holds lots of socks: 4 red, seven green, three white, and two purple. He takes two socks, what is the probability that he will get red and green socks?

Geometry
I could also use the formula of a sphere

Math
Each ticket bought is $2.25. Each ticket bought Gives one chance in the drawing. Jose Purchased 10 tickets. If there were 510 tickets Purchased in all, what is the probability that One of Jose's ticket's will be drawn first? 10/510 or1: 52 chance

Math
Each ticket bought is $2.25. Each ticket bought Gives one chance in the drawing. Jose Purchased 10 tickets. If there were 510 tickets Purchased in all, what is the probability that One of Jose's ticket's will be drawn first? 10/510 or1: 52 chance

Math
73 divided by 150 comes out to be about 49%. What am I doing wrong

Math
If there were 150 animals, of which 73 were rabbits and the rest are chickens.. What percentage of the animals were chicken? Is it 48%

physical science
How many kilocalories of heat does the operation of a 1285 W hair dryer produce each second?

Chemistry
A helium ballon contains 0.32g of helium. Given the molecular weight of helium is 4. How many moles of helium does it contain.

Science
What tool is used to capture the energy in sunlight?

English
Which is President Kennedy’s intent when using questions in the last paragraph of this excerpt?

chemistry
2NO (g) + Cl2 (g) <=> 2NOCl (g) (reversible) equilibrium constat = 1 x 10^7 @ certain temp NO = 2.8 x 10^-2 mol Cl2 = 1.4 x 10^-3 mol NOCl = 5.9 mol all mixed in a 1.4 L flask what is Qc and what direction will system go?

chemistry
shouldn't it be -2x?

chemistry
equilibrium constant = 2.180 x 10^6 @ 730 C. H2 (g) + Br (g) <=> 2HBr (g) (reversible) startin with 3.20 moles of HBr in a 21.3-L reaction vessel, calculate the concentrations of H2, Br2, and HBr at equilibrium idk how to start my ice table

chemistry
equilibrium constant = 55.3 @ certain temperature H2 (g) + I2 (g) <=> 2HI (g) (reversible) If you start with 0.195 M hydrogen iodide, what will the concentrations of H2, I2, and HI be at equilibrium?

history
All of the following were anti-modern reactions except A. fundamentalism B. Ku Klux Klan C. cultural anthropology D. arts and crafts movement E. prohibition F. None of the above would it be fundamentalism?

Calculus
The circle defined by the equation x^2 + y^2 = 18 has two points where the slope of its tangent line is m=1. Find those points.

chemistry
How many grams of Li2O must be carried on board to remove 85.0kg of water?

Calculus: Integral
I don't understand how to do this one integral problem that involves secant. I'm asked to find the integral of sec^4 (4x). I'm not really sure how to go about solving this problem.

chemistry
Assume that 0.0200 mole of a gas is collected in the lab by water displacement. If the temperature of the gas is 26.0oC and the total pressure in the gas tube is 745 mm Hg (including water vapor), what is the volume in liters of the dry gas? (Use the ideal gas law.)

math
The two fractions below cannot be simplified as they are, but if you switch the numerators, they can be simplified. What property allows us to do this? 2/3 x 3/8

Math
The ratio of the number of boys to the number of girls in Mr. Brown's class is 5:4. Which of the following can be calculated using the information given? A. The number of girls in Mr. Brown's class B. The number of boys in Mr. Brown's class C. The ratio of the numb...

Math
Michael has a science project due. He knew that it would take him 4 hours to complete the project. He needed to spend 50% of his time on his experiment, 40% of his time on his analysis, and 10% on putting his project together. What is the ratio of time spent putting his projec...

Math
The height of an elephant in a scale drawing is 4 cm. The scale in the drawing is 1 cm to 50 in. What is the actual height of the elephant. A. 200 in B. 400 in C. 53.5 in D. 25 in

Math
In Mrs. Julie's classroom the ratio of boys to girls is 12 to 8. If the entire elementary school has a population of 400 students, how many would you expect to be girls?

Math
The Look Alike Doll Company makes dolls that resemble people. Pam's mom is having a doll made to look alike Pam. Pam is 5 feet tall. The doll will be 2 1/2 feet tall. What is the ratio of the doll's height to Pam's height?

Math
Jason drew two circles. the diameter of the larger circle is twice the diameter of the smaller circle. What is the ratio of the circumference of the smaller circle to the circumference of the larger circle?

Math
The height of an elephant is a scale drawing is 4cm. The scale in the drawing is 1 cm to 50 in. What is the actual height of the elephant?

Math
The population of some countries has a relative growth rate of 2.75% per year. At this rate, how many years (to the nearest tenth of a year) will it take the population to double?

US government
over time _____ has gained power at the expense of ____.

Math
your class is conducting an experiment to study geometric sequences. The class forms a line. the first person takes a whole pizza,divides it in half, keeps half, and hands it to the next person. The next people in line do the same with there peices. Which portion does the seve...

DATABASE.PLEASE!!
yes dodo

Math
A physics exam consists of 9 multiple-choice questions and 6 open-ended problems in which all work must be shown. If an examinee must answer 5 of the multiple-choice questions and 2 of the open-ended problems, in how many ways can the questions and problems be chosen?

survey math 140
a textbook search is considering 19 books for possible adoption. the committee has decided to select 5 of the 19 for furture consideration in how many way can id do so

physic angular momentum and torque
Radius = 4 feet; height = 6 feet

algebra
The height of a ball dropped from a tall building is modeled by the equation d(t) = 16t2 where d equals the distance traveled at time t seconds and t equals the time in seconds. What does the average rate of change of d(t) from t = 2 to t = 5 represent?

alegbra 1
A company manfactures an alarm clock. Three weeks ago the company had 250 on hand. Two weeks from now it will have 500. Assume the company will continue to make the clocks at the same rate.

Finance
10. A new factory at Arcata requires an initial outlay of $3.5 million to be paid immediately. The factory will last for eight additional years, after which it can be sold for a salvage value of $2,000,000. Sales will be $800,000 during the first year of operation and will gro...

chemistry
278.35g Ba3n2 to mole Ba3N2

Geometry
concrete costs 105 per cubic yard. plato is making a rectangular concrete garage floor measuring 33 feet wide by 6 inches thick. how much will the concrete cost?

ALGEBRA
EVA IS JUMPING ON A TRAMPOLINE .HER HEIGHT H AT TIME T CAN BE MODELED BY THE EQUATION H=-16T^2+20T+6.WOULD EVA REACH A HEIGHT OF 14 FEET

Chemistry
excess magnesium is reacted with 45 grams of sulfuric acid. 9.5 liters of hydrogen gas are collected understand conditions of temperature and pressure. what is the percentage of hydrogen sulfate and of water in the acod solution?

Maths
Plz somebody help !!!

Maths
What is a shape that has a 24cm2 area and a 26cm perimeter. The sides have to be 5,4 and 3cm long!!!

Need 8 grade math help quick please!
Thank you!

math
A boat needs to travel south at a speed of 20 km/h. However a constant current of 6 km/h is flowing from the south-east. Use vectors to find: a.the equivalent speed in still water for the boat to achieve the actual speed of 20 km/h. b the direction in which the boat must head ...

3rd grade math
I Dont no and Im fiFt grade

Mathematics
Tn-1,Tn-2,Tn-3

Mathematics
Give the first three terms of the sequence of 1.Tn+1=Tn+n

Science URGENT
for second part C6H12O6 Total atoms in 1 molecule = 6 + 12 + 6 = 24 2C6H12O6 6 carbon atoms, 12 helium atoms, and 6 oxygen atoms then you have 24 atoms times the 2 at the beginning making 48 atoms

Science URGENT
Hey MAD 2 Hydrogen atoms + 1 oxygen atom = H2o 3H2O : 9 atoms 5H2O = 15 atoms

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