Questions Asked on
July 3, 2011

chemistry
Which of the following pairs of molecules have the same oxidation number for carbon? CO and CO2 CH4 and CCl4 C6H12O6 and C(s) H2CO and COCl2 Carbon always has an oxidation number of +4 What mass of CuSO4.5H2O would you need to prepare 250.0 mL of a 0.250 M
asked by Anonymous 
physics
two ends of a train moving with constant acceleration pass a certain point with velocities u and v. what is the velocity with which the middle point of the train passes the same point? I have asked this question before you have answered u+v/2. but my mam
asked by pavatharani 
exp of math
sales of frozen pizza for a club fundraiser increased from 500 one year to 520 the next year. what is the percent increase
asked by nichole 
physics
a car moving on a straight road with a speed of 20m/s. at t=0 the driver of the car applies the breaks after watching an obstacle 150m ahead. after application of breaks, the car retards with 2m/s^2. find the position of the car from the obstacle at t=15s.
asked by pavatharani 
Algebra II
If an object is propelled upward from a height of 16 ft at an initial velocity of 80 feet per sec, the its height after t seconds is given by the equation h=16t²+80t+16, where h is in feet. after how many seconds will the object reach a height of 116 ft?
asked by HELP 
History
Hello Any help would be greatful...TIA 1..What is the Agrarian Myth According from Hofstater? 2. When did the Myth 1st appear and whom was responsible for it? 3.Was there ever a time in America History when conditions corresponded to the myth? Thanks
asked by Jessica 
Chem
What is the speed of an argon atom that has a de Broglie wavelength of 5.2 pm?
asked by Chris 
physics
a point moving on a straight line traversed half the distance with a velocity v0. the remaining part of the distance was covered with velocity v1 for half the time, and with velocity v2 for the other half of the time. find the mean velocity of the point
asked by pavatharani 
physics
An elevator starts from rest with a constant upward acceleration and moves 1m in the first 1.4 s. A passenger in the elevator is holding a 6.3 kg bundle at the end of a vertical chord. what is the tension in the chord as the elevator accelerates? The
asked by alexa 
stats
If other factors are held constant, how does increasing the sample variance affect the value of the independentmeasures t statistic and the likelihood of rejecting the null hypothesis?
asked by mike 
Chem
What is the wavelenght of a radio station operating at a frequency of 99.6 MHz?
asked by Chris 
physics
I have a question based off of the response to the question I posted below. Sorry, i wanted to make sure that i clearly understood,so My question about the third solution is: Is the horizontal force zero N? or is it 721.3N? A dragster and driver together
asked by alexa 
chemistry
Benzene, C6H6, is a known carcinogen that burns in air according to the following unbalanced equation: C6H6(l) + O2(g) CO2(g) + H2O(g) a. What is the mole ratio of O2 to C6H6? b. How many moles of O2 are required to react with each mole of C6H6? c. How
asked by ABCD 
math
Each liter of air has a mass of 1.80 grams.How many liters of air are contained in 2.5 x10 to the third power kg of air?
asked by Anonymous 
math
Each liter of air has a mass of 1.80 grams.How many liters of air are contained in 2.5 x10 to the third power kg of air?
asked by Anonymous 
Physics
As your bus rounds a flat curve at constant speed, a package with mass 0.300 , suspended from the luggage compartment of the bus by a string 46.0 long, is found to hang at rest relative to the bus, with the string making an angle of 30.0 with the vertical.
asked by dalke 
early childhood education
Catherine goes to her local movie theater only to see romantic comedies. Since Catherine did not go to the movies yesterday, there is not a romantic comedy playing at her local theater. The reasoning above is flawed because the evidence
asked by carmella 
Chemistry
2Mg + O2>2MgO If more magnesium is added a.the reaction will shift to the right. b.the reaction will shift to the left. c.there will be no shift. and why im confused on why it would happen.
asked by Anonymous 
grammar
Is the following an interrogative of declaritive sentence Guess who we saw today
asked by Tami 
Chemistry
If oxygen is removed, the amount of magnesium oxide a.will increase b.will decrease c.will not change. and why? Thanks for your help
asked by Emma Rae 
Chem
A certain shell is known to have a total of 16 orbitals, which shell is it?
asked by Chris 
geometry
in an equilateral triangle RST, R has coordinates (0.0)and T has coordinate of (2a,0).Find the coordinates of S in terms of a.
asked by katie 
Chemistry
Choose the bond that is the weakest: A) NaCl B) II C) C=N D) LiF E) C=O I don't understand the question... do they mean polarity wise, IMF wise or bond length wise. I know the answer is C but why C.
asked by Tc 
math
Suppose the 435 members of the House of Representatives are placed on committees consisting of more than2 members but fewer than 30 members. Each committee is to have an equal number of members and each member is to be on only one committee. a. What size
asked by judy 
math
Each liter of air has a mass of 1.80 grams.How many liters of air are contained in 2.5 x10 to the third power kg of air?
asked by Anonymous 
algebra II
How many solutions does the equation x^2  2x  2 = 0 have?
asked by Lee 
Algebra II
A projectile is thrown upward so that its distance above the ground after t sec is given by h(t)=11t²+264t. After how many seconds does it reach its maximum height?
asked by HELP 
Algebra 2
The number of tickets sold each day for an upcoming performance of Handel's Messiah is given..........? by N(x)=0.3x^2+8.4x+10, where x is the number of days since the concert was first announced. When will daily tickets sales peak and how many tickets
asked by Shelly 
College Math
An inlet pipe on a swimming pool can be used to fill the pool in 24 hours. The drain pipe can be used to empty the pool in 40 hours. If the pool is onethird filled and then the drain pipe is accidentally opened, how long will it take to fill the pool?
asked by Lamont 
chemistry
iF 50.0 g of iron (II) carbonate react completely with hydrochloric acid, how many grams of carbon dioxide gas may be produced?
asked by cHARLIE 
medical billing and coding
what is the relationship between the claim form and reimbursement
asked by stacy 
Algebra 2
Factor: 10ab^3 – 5a^3b^2
asked by Sam 
Algebra 2
Simplify: 8rs^2/5s^4 times (2r^3)^1
asked by Sam 
algebra II
Simplify: (3c^2)(6cd)^2
asked by Erica 
algebra II
Simplify: a^4b^4/ab
asked by Erica 
Algebra
Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 4x + 4y = 36 4x + 4y = 12
asked by toni 
algebra
5/23x=6/74x
asked by Poochie 
algebra
THE FUNCTION D(X) MODELS THE CUMULATIVE NUMBER OF DEATHS FROM A DISEASE X YEARS AFTER 1984. ESTIMATE THE YEAR WHEN THERE WERE 90,000 DEATHS D(x)=2010X^2+5400X+5774
asked by joseph 
Math
Simplify (x2)^2/2x+4 times (x^2+4x+4)
asked by Monica 
statistics
what is the name of an article that can show the chisquare assumption?
asked by jonja 
mathematics
2a^23a2/4a^21 (4a^21 = denominator) divided by a^24/2a^25a+2
asked by Allen 
Algebra
The problem is 9x+4y=12 x=265y Solve by substitution method
asked by Vic 
chemistry
What is [H+] concentration in a 4M aq solution of acetic acid (Ka= 1.8 E5)? what formula do you use to get the answer?
asked by Anonymous 
business
Read “HiHo YoYo, Inc.” on pages 771772 in your text. Explain your analysis in a 24 page APA style paper using the rule definitions on page 746.
asked by Anonymous 
algebra
5. 16t2 gives the distance in feet a freefalling object falls in t seconds. 16t2 + 10t gives the distance an object falls in t seconds when it is thrown down with an initial velocity of 10 feet per second. Use this polynomials to: a. Find how far a wallet
asked by leigh 
writing
Have you ever wondered what the world would be like in the future? According to events taking place now in the world, our future will change drastically. In 50 years, our society, environment, and schools will be greatly affected. Our society will change
asked by Sally 
algebra
5. 16t2 gives the distance in feet a freefalling object falls in t seconds. 16t2 + 10t gives the distance an object falls in t seconds when it is thrown down with an initial velocity of 10 feet per second. Use this polynomials to: Find how far a quarter
asked by leigh 
Physics
Water is lifted out of a well 25.0 m deep by a motor rated at 1.50 hp. Assuming efficiency 90%, how many kilograms of water can be lifted in 1 min?
asked by Luis 
microeconomics
Sam Johnson started a small machine shop, Machines, Inc., in his garage and incorporated it in March of 2002 as a calendaryear corporation. At that time, he began using his personal computer and tools solely for the business as part of his contribution to
asked by Elizabeth 
ARYA
IF (TANA+TANB)=M AND (TANATANB)=N, THEN COT(AB)=?
asked by GOWRI 
mechanical
n projectile motion if range is the maximum, then what will be the height?.
asked by Avais 
English
What will i study? Is this sentence right?I think that it is not correct,formal writing."What shall i study" is the correct question,but why say that "What will i study?".Is it right?
asked by Bayarbold 
social studies
traits of dr. jose rizal
asked by camille 
Writing
Any suggestions for writing topics?
asked by Sally 
Emma Rae
2Mg + O2>2MgO If more oxygen is added, the amount of magnesium a.will increase. b.will decrease c.will not change. and why? Thanks for your help
asked by Anonymous 
Chemistry
Select the most likely rate law for the following: (CH3)3CBr + OH > (CH3)3COH + Br a. Rate=k[(CH3)3CBr] b. Rate=k[(CH3)3CBr][OH] c. Rate=k[(CH3)3CBr][OH]2 d. Rate=k[(CH3)3CBr]2[OH]2 e. Rate=k[(CH3)3CBr]2[OH] The correct is answer is "a" but
asked by Carole 
physics
what are the basic measurements?
asked by Anonymous 
math
if 2 cars one a high speed race car, one a mid size sedan, are on the same road, both going 60 miles per hour, would they arrive at a given point at the same time or does the engine make a difference?
asked by Gwen 
math
All 32 of students attended class on monday on tuesday 20 % attended. what is the percentage decrease?
asked by nichole 
math
how much money should you invest now to have 6000 in 11 years if you invest the money at a rate of 11.1%. compounded semiannually.
asked by nichole 
science
why archaeologist and environmental scientists were worried about the effect of an oil refinery which was close to Taj Mahal at Agra?
asked by lavu 
computer science
Step 3: Part C iLab Part C: Payroll Program Step 1: Create a New Project Create a new project and name it LAB1C. Make sure you close your previous program by clicking File >> Close Solution. This time, do not delete the code that gets automatically
asked by jose coco 
Algebra 2
f(x)= x+5, if x>0 3, if x
asked by HELP 
physics
a box slides down a smooth inclined plane 30m long and 10m high.determine the speed of the box at the bottom of the plane if it starts from rest at the top.
asked by Anonymous 
math
what isthe area of a 8 inch circle?? what are the calculations. ???
asked by jay 
exp of math
if john has a balance of 2195. after 3 years what will be the amount of the interest at 8%. compounded semiannually
asked by nichole 
Math
Simplify:Assume that no denominator is 0and that 0^0 is not considered. question: (a^3b)(ab)^4
asked by Ms.Ellis 
math
write as percent 5/3
asked by Anonymous 
math
how much money should you invest now to have 7000 in 11 years if you invest the money at a rate of 9.3%. compounded semiannually
asked by AJAY 
math
what is the amount of the investment 1300 at 4% compounded quarterly for 6 years
asked by nichole 
Math
Simplify:Remember to use absolute value notation when necessary. If a root cannot be simplified, state this. Ques: 5sq.rt1/32
asked by Ms.Ellis 
math
what would be a due date of a loan june 17 for 150 days the year is a leap year. is it june 17 or 18?
asked by nichole 
chemistry
I am having trouble balancing one of the half reactions: AsO3^(3) > AsO4^(4) Which side should OH and H2O go? Thanks.
asked by Anonymous 
math
enrollment in a business seminar increased from 52 people to 71 people. what was the percent increase.
asked by nichole 
speech
I am writing a commemortative speech. And I want to commemorate my two year old nephew. He has many great qualities i just don't know how to word the things he does into simple words. For example when I walk in the door he is so happy to see me or when I
asked by rennee 
Math
Simplify:Do not use use negative exponents in the answer. Ques: x4*x7
asked by Ms.Ellis 
math
how much money should you invest now to have 5000 in 11 years if you invest the money at a rate of 9.4%. compounded semiannually
asked by nichole 
geometry
In parallelogram ABCD, A (0,0),B(a,b)and D(c,0)are three of it's vertices, what are the coordinates of C in terms of a,b,c
asked by katie 
psychology
Often called the "father of modern psychology," Wilhelm Wundt painstakingly examined the small pieces of behavior. He was not interested in personalilty mental disorders. He did study the cognitive elements of: a)thinking, perception, and consciousness
asked by Deanie 
math
family phone bill decreased from $50 a month to about $46 a month. what was the percent decrease?
asked by nichole 
health/please check
The first offense for federal trafficking penalties that is not less than 10 years and not more than life applies to wich drugs: a) cocaine b) Heroin c)Methamphetamine d)LSD e)none of the above My answer is E.
asked by joy 
Sci
A 5kg voulume of water falls from a shelf 2 meters above the floor, If all the energy is converted to heat, what is the change in temperature?
asked by Trice 
English
Help them carry their walker up the steps onto the bus. (What is the part of speech of 'onto the bus'? Is it an adjective phrase or an adverbial phrase? Can we use 'on' instead of 'onto'? Thank you for your help.)
asked by rfvv 
math
what is the percent increase from 72 people to 92 people
asked by nichole 
math
Kahlil said that using the equation (a + b)2 = a2 + 2ab + b2, he can find a similar equation for (a  b)2. Examine his argument. (a  b)2 = [a + (b)]2 = a2 + 2a(b) + (b)2 = a2 – 2ab + b2
asked by jeana 
math
Find the area of a rectangle if its length measure 12 cm and its width measures 13 cm. Include correct units with the solution.
asked by jenna 
Physics
A vertical spring with a force constant of 250 N/m is compressed 7.5 cm and a 0.30 kg ball placed on top. The spring is released and the ball flies vertically upward. How high does the ball go? (thanks for helping)
asked by Luis 
physics
A block of mass 35 kg moves on the horizontal surface. If initially at rest whwat is the speed of the block after moving a distance of 6m when G=32?
asked by John 
math
Find the area of a square if 1 side measures 22 cm. Include correct units with solution.
asked by jenna 
math
what is the exact circumference of a circle with a diameter of 13 inches?
asked by jenna 
math
find the perimeter and area of a right triangle if 1 leg measures 10 ft. and the other leg measures 24ft. show all work please.
asked by jenna 
math
how many cubic cm can a cigar box hold if its diameter is 4 cm by 10.5 cm by 7 cm?
asked by jenna 
math
exactly how many cubic inches of ice cream can an ice cream cone hold (within the cone) if its height is 6 inches and the radius of its base is 2.5 inches? include correct units with the solution. use "pi" in place of the pi symbol.
asked by jenna 
physics
A non stop bus goes from one station to another at a speed of 54 km/h. The bus returns from the second station to first station at a speed of 36 km/h. Find the average speed of the bus.
asked by anil 
alga br e
How many ft of fencing is needed to enclose a square with 33ft sides
asked by Megan 
Grammar
Question: When two words act as a single modifier, or adjective, for a noun, this is called a/an ________. a. compound modifier b. coordinating conjunction c. adverb modifier d. prepositional phrase ANSWER: a. compound modifier
asked by LeslieTo:Writeacher 
history
The Cherokees were happy and prosperous under.... the government of the united states, and from the helping hand extended over them, they made rapid advances in civilization, morals and in the arts and sciences. Little did they anticipate, that when taught
asked by Anonymous 
Physics
If 60 Cal. are added to 6 g. of iron at 20 degrees Celsius what is the final temp.
asked by Duane 
business math
Your brother just won the Power Ball lottery. He has the choice of $10,000,000 today or 30year annuity of $500,000, with the first payment coming today. What rate of return is built into the annuity?
asked by jama 
physics
Two identical springs (neglect their masses) are used to “play catch” with a small block of mass 200 g (see the figure). Spring A is attached to the floor and compressed 10.0 cm with the mass on the end of it (loosely). Spring A is released from rest
asked by Luis 
physics
Two identical springs (neglect their masses) are used to “play catch” with a small block of mass 200 g (see the figure). Spring A is attached to the floor and compressed 10.0 cm with the mass on the end of it (loosely). Spring A is released from rest
asked by Luis 
lottory maths
winning no. marchine no. 8542433650 574352423 83584321 6 5633384673 6918594935 36 9477178 14408876 1 532622027 4839377153 815212 614 2963805737 1965424421 69 2683531 742840 183 4774204211 4922
asked by Gen 
chemistry
Consider the following equations. For each, decide whether it represents a chemical reaction or a physical change. a. SnCl4(aq) + 4H2O(l) Sn(OH)4(s) + 4HCl(aq) b. 4K(s) + O2(g) 2K2O(s) c. NaCl(s) Na+(aq) + Cl(aq)
asked by ABCD 
chemistry
Predict whether reactions should occur between aqueous solutions of the following compounds. If so, write balanced molecular and net ionic equations for the reactions. Include physical states. a. (NH4)2CO3 and CrCl3 b. Ba(OH)2 and HCl c. FeCl3 and NaOH d.
asked by ABCD 
chemistry
Suggest chemical reactions that could be used to identify the contents of four unlabeled bottles containing solutions of the following substances: CuSO4, Al2(SO4)3, Pb(NO3)2, and FeSO4.
asked by ABCD 
math
Each liter of air has a mass of 1.80 grams.How many liters of air are contained in 2.5 x10 to the third power kg of air?
asked by Anonymous 
math
Each liter of air has a mass of 1.80 grams.How many liters of air are contained in 2.5 x10 to the third power kg of air?
asked by Anonymous 
algebra II
The length of a rectangle is three more than twice its width. The area is 65 m2. What is its width?
asked by Nicole 
algebra II
The _______ of a quadratic equation can be used to find the number of solutions it has. ?? A. vertex B. Axis of Symmetry C. Discriminant D. Leading Coefficent
asked by Nicole 
algebra II
Solve: x^4  2x^2 = 35
asked by Nicole 
human services
where could i found information on the relationship between ethics, law, and professional practice?
asked by patiance 
algebra II
Solve by completing the square: a^2  4a = 8
asked by Thomas 
algebra II
Solve using the quadratic formula: x^2  3x  5 = 0
asked by Thomas 
Algebra II
Please help me! Find the exact solutions to the quadratic equation in the complex numbers. (x13)²=36
asked by Reanna 
Math
Solve: x^2x12> 0
asked by Christal 
Math
Solve 2x^2+7x> 15
asked by Christal 
algebra II
Simplify (3i)^2
asked by Matt 
Pre calculus
Please help me! Find the exact solutions to the quadratic equation in the complex numbers. (x13)²=36
asked by HELP 
Math
Simplify: (4  5i)(3 + 2i)
asked by Matt 
algebra II
What is the vertex of y > x^2  2x  3?
asked by Sean 
algebra II
What is the axis of symmetry of f(x)= 1/2^2x+4?
asked by Sean 
algebra II
The length of a rectangle is three more than twice its width. The area is 65 m^2. What is its width?
asked by Sean 
math
in a 9 in. sq. cake pan and 1 10 in. sq. cake pan, what is the difference in volume each pan will hold? assume each pan is 3 in. high. show step by step work and correct units with solution.
asked by jenna 
math
how many cubic cm can a cigar box hold if its dimensions are 4 cm. by 14 cm. by 12 cm? include correct units with solution.
asked by jenna 
math
find the perimeter and area of a right triangle if the shortest side is 20 mm. and the longest side is 52 mm. include correct units with each part in solution.
asked by jenna 
math
how many cubic inches of ice cream can an ice cream cone hold (within the cone) if its height is 7 inches and the diameter of its base is 3 inches? give solution accurate to the nearest hundredth.
asked by jenna 
finance
Entrepreneur Edward is planning to open a business selling ice cream. He knows that the price of ice cream is determined by the forces of supply and demand, but he wants a report outlining five specific events that can be expected to cause the equilibrium
asked by Elizabeth 
english
describe the surface of a planet using the 5 senses (year 7)....
asked by claire 
Algebra II
f(x)=1/x+2
asked by Reanna 
Algebra II
Suppose that y varies directly as the 3/2 power of x, and that y=192 when x= 16. find y when x=9.
asked by Reanna 
Algebra II
Find the inverse of the function: f(x)=x²+16, x≥0 f(x)=5/x3
asked by HELP 
Algebra 2
write a quadratic equation in the variable x having the given numbers as solution. Type the equation in standard form, ax^2+bx+c=0 solution 4, only solution
asked by Shelly 
algebra II
Solve: (3x + 5)^2 = 6
asked by Britney 
Algebra
use factoring to solve the equation 4x²23x=6 I think the answer is x=1/4,x=6 Just want to make sure that's right
asked by HELP 
Algebra II
solve using quadratic formula p²+5p5=0
asked by Kevin 
Math
An inlet pipe on a swimming pool can be used to fill the pool in 24 hours. The drain pipe can be used to empty the pool in 40 hours. If the pool is onethird filled and then the drain pipe is accidentally opened, how long will it take to fill the pool?
asked by Lamont 
Algebra
If you drive 253 miles on 11 1/2 gallons of gas, what is the simplified ratio of miles to gallons? ____ to 1?
asked by Lamont 
Algebra II
Find xintercepts y= x²2 is it (√2,0) (√2,0)?
asked by Kevin 
MATHA
HOW TO WRITE 2ND JULY 2011 IN 5 LETTERS WITHOUT USING NUMBERS
asked by BAL 
Algebra
An inlet pipe on a swimming pool can be used to fill the pool in 24 hours. The drain pipe can be used to empty the pool in 40 hours. If the pool is onethird filled and then the drain pipe is accidentally opened, how long will it take to fill the pool?
asked by Lamont 
Algebra II
f(x)=1/(x+2)
asked by Kevin 
math
(−2x + 9) + (x2 + x − 9)
asked by Lamont 
science
The concentration of commercially available concentrated nitric acid is 70% , or 15.9M In 100 grams of solution there are 1.11 mol of HNO3. Calculate the volume of 100 g of the Solution.
asked by Lahna 
Algrbra II
f(x)= x+5, if x>0 3, if x¡Ü0 and how would i graph this?
asked by HELP 
Algebra
4x +7 =18, then what is the value of 12x +21? I don't know the value of x.
asked by lizzie 
algebra II
The side of a square is (x – 4). What is the area in terms of x?
asked by Sam 
Physics
An aluminum cube that has an edge length of 7 cm. is placed in a beaker of water that is filled to the brim. As a result the water overflows. what volume of water overflows when the aluminum cube is submerged in the water?
asked by Lori 
finance
swh corporation issued bonds on january 1, 2004. The bonds had a coupon rate of 4.5%, with interest paid semiannually. The face of the bonds is $1000 and the bonds mature on January 1, 2014. What is the instrinsic value (to the nearest dollar) of an swh
asked by Lisa 
physics
Two masses are involved in an elastic collision. The first has a mass of 0.150 kg and an initial velocity of 0.900 m/s directed at an angle of 50 degrees with the positive yaxis as shown below. The second mass, of 0.260 kg moves along the xaxis with an
asked by collisions 
world history
How is the historical event of the 1981 Springbok Tour is, or was, of significance to New Zealanders.
asked by Ali 
Math
Hello, For math I have to make a graph of two linear relations. One has to be the operating costs of a zoo or amusement park and the other cost of admission for me and my family. Using both linear relations I then have to find another relation that would
asked by Gianna 
statistics
give an example of an article that shows the chisquare assumption method of ststistics
asked by jonja 
algebra 2
revenue from ticket sales: 4x(x+6) cost of band: 5x(x4) profit: 160 (given in thousands, use 160) 1.the equation to determine profit id revenuecost=profit. write the equation that explains the profit made last year. be certaiin to combine like terms. if
asked by keyy 
English
I'm looking for a nice fourstar hotel near or in Yellow Stone Park for a family consisting of four people, two adults and two chilren of eleven and thirteen years old respectively. I hope someone from jiskha can help me because I've never been there. Do
asked by Henry2