Questions Asked on
May 24, 2010

Algebra 2
Find the values of the 30th and 90th percentiles of the data 18, 9, 7, 5, 11, 7, 17, 20, 19, 2, 17, 12, 5, 1, 13, 12, 11, 15, 16, 20 * 30th percentile = 9 90th percentile = 20 * 30th percentile = 9 90th percentile = 19 * 30th percentile = 11 90th
asked by Skye 
Cartesian Vectors
An airplane is flying at an airspeed of 345 km/h on a heading of 040 degrees. The wind is blowing at 18 km/h from a bearing of 087 degrees. Determine the ground velocity of the airplane.
asked by Anonymous 
Calculus
If tanh(x)=24/25, find the values of the other hyperbolic function at x I was able to find coth(x)=25/24, but what is sin, cos, csc, and sec? I would greatly appreciate your help!!
asked by Sarah 
physics
How much work is done on a bookshelf being pulled 5.00m at an angle of 37.0 degrees from the horizontal? The magnitude of the component of the force that does the work is 43.0N
asked by julie 
11th grade
what is the chemical reaction equation for : Hydrogen sulfite reacts with oxygen to form sulfur dioxide and water vapour.
asked by Cats 
physics
Two long parallel wires carry currents of 10 A in opposite directions. they are separated by 40 cm. what is the magnetic field in the plane of the wires that is 20 cm from one wire and 60 cm from the other?
asked by manisha 
Physics
A 1.3 X 10^3 kg car traveling with a speed of 2.5 m/s executes a turn with a 7.5 m radius of curvature. Calculate the centripetal acceleration of the car and the centripetal force acting on the car.
asked by James 
Algebra 2: Prob and Stats
The numbers of cookies in a shipment of bags are normally distributed, with a mean of 64 and a standard deviation of 4. What percent of bags of cookies will contain between 60 and 68 cookies? * 50% * 13.5% * 68% * 34%
asked by Skye 
Biology 2
How is the ability to regenerate lost body parts for most echinoderms?
asked by Avalon 
algebra 2
Two snow resorts offer private lessons to their customers. Big Time Ski Mountain charges $5 per hour plus $50 insurance. Powder Hills charges $10 per hour plus $30 insurance. For what number of hours is the cost of lessons the same for each resort?
asked by Anonymous 
calculus
The area of the parallelogram formed by the vectors p = (a, 1, 1) and q = (1, 1, 2) is root 35. Determine the values of 'a' for which this is true.
asked by Anonymous 
Physics
Two projectiles are launched from ground level at the same angle above the horizontal, and both return to ground level. Projectile A has a launch speed that is twice that of projectile B. (Sketch trajectories of projectiles). Assuming that air resistance
asked by Christy 
chemistry
if i mix 4 grams of hydrogen and 32 grams of oxygen how many grams of water would be produced
asked by kee 
Algebra 2: Prob and Stats
A survey of 480 high school students found that 37% had a pet. Find the margin of error. Round to the nearest percent. Use the margin of error to find an interval that is likely to contain the true population proportion. * margin of error = +5% interval,
asked by Skye 
business stats
A market research firm conducts telephone surveys with a 44% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, what is the
asked by chelsea 
Algebra
One pipe can fill a swimming pool in 8 hours. Another pipe takes 12 hours. How long will it take to fill the pool if both pipes are used simultaneously?
asked by TinaG 
physics
a warehouse worker pulls on the handles of a 96.0 kg cart witha net force of 128N an angle of 55.0 degrees above the horizontal. Attached to the cart is a smaller cart having a mass of 72.0kg. What is the magnitude of the horizontal acceleration of the
asked by julie 
P Chem
A 10.0% by mass H2SO4(aq) solution has a density of 1.07 g/mL. (a) How many milliliters of solution contain 8.41 g of H2SO4? (b) What is the molality of H2SO4 in solution? (c) What mass (in grams) of H2SO4 is in 258 mL of solution?
asked by Jenny Marie 
11th grade
write an expression that represents the width of a rectangle with length x+5 anmd area x to the 3 power + 12x to the 2nd power+ 47x+60
asked by Anonymous 
physics
a dog walks 28 steps north and then walks 55 steps west. if the daog walks back to the starting point in a straight line, how many steps will the dog take? find the magnitude of the net displacement
asked by ang 
Chemistry!!!!
A student mixed 50.0 mL of 0.50 M H2SO4 (aq) at 18.5 degrees C with 100 mL of 0.50 M NaOH (aq) at the same temperature. After the reaction was completed, the temperature rose to 22.0 degrees C. What was the heat of reaction? (Assuming the densities of the
asked by Anonymous 
General Chemistry
Nitric oxide (NO) reacts with oxygen gas to form nitrogen dioxide (NO2), a darkbrown gas: 2NO(g) + O2(g) > 2NO2(g) In one experiment 0.886 moles of NO is mixed with 0.503 moles of O2. Calculate which of the two reactants is the limiting reagent. Please
asked by Kendra 
Chemistry
How much heat is lost when 12.4 g of H2O g at 110 degrees C are converted to liquid at 50.0 degrees C? (The specific heat of steam is 2.02 J/g degrees C. Could someone write the steps? Equation?
asked by Anonymous 
physics
a sled is pulled at a velocity across a horizontal snow surface. if a force of 8.0x10 to the first power N is being applied to a sled rope at an angle of 53 degrees to the ground, what is the magnitude force of friction
asked by josh 
physics
a sled is pulled at a velocity across a horizontal snow surface. if a force of 8.0x10 to the first power N is being applied to a sled rope at an angle of 53 degrees to the ground, what is the magnitude force of friction
asked by ang 
math
in super bowl XXXV, the total number of points scored was 41. the winning team outscored the losing team by 27 points. what was the final score of the game? a. 33 to 8 b. 34 to 7 c. 22 to 2 d. 18 to 6 i don't get this question a high school basketball
asked by Sara! 
Asia  JAPAN Pollution
Hi, I have got a question about Japan's geography; In which ways has the actions of man ( people) affected Japans land? I mean like acíd rain, carbon dioxide etc.( negative effects on the country) I've been googling it, but I can´t find anything. Bea
asked by Beatrice 
English /Lit
Using literary elements,compare and contrast Abigail Adams letter to her daughter with Jean de Crevecoeur's essay from letter to an American farmer. Now i read both essays, and im very fond of both of them . but i have trouble on what to compare and
asked by Stephanie 
algebra
State any restrictions on the variables. 3y^2  3y/ y  3
asked by Anonymous 
algebra
Kim can mow the greens at golf course twice as fast as I can. Working together, we can mow them in four hours. How long will it take me to mow the greans alone?
asked by TinaG 
Physics
Describe the primary force or forces involved when a car executes a turn. Explain why passengers tend to lean or slide toward the outside of the turn.
asked by James 
consumer math
Serina bought 300 shares of stock at 24 1/2. She had to pay a 1% commission to her broker. What was the total price of the stock?
asked by peaches 
Business Law
Miguel buys a truck in Texas, then moves to Washington. A year later, he is driving his truck in Oklahoma, and causes an accident by running into another car, whose driver is from Florida. In what states will the other driver be able to sue Miguel? State
asked by Britney 
math
i don't get this question consecutive integers are integers that differ by one. you can represent consecutive integers as x,x+1,x+2 and so on. write an equation and solve to find 3 consecutive integers whose sum is 33
asked by Sara! 
Chemistry
Determine whether a solid forms when solutions containing the following salts are mixed. (Express your answer as a chemical equation. Identify all of the phases in your answer) NaF and AgNo3 MnSO4 and Na2CO3
asked by David 
aed
Answer the following in 200 to 300 words: List three societal issues students face outside of the classroom. Describe the role that you think schools should play in teaching students values and strategies to help them overcome these challenges.
asked by lashun 
Communications 220
Create a thesis for your research paper. How do you plan on supporting your thesis with compelling arguments and coutner arguments? This is what I have so far. Please let me know if I need to further explain how I will support the arguments and if the
asked by Amanda 
Algebra
Chemist has 60 g of solution that is 70% acid. How much water should be added to make a solution that is 40% acid?
asked by TinaG 
math
The bumper car ride at the state fair has 3 red cars, 4 green cars, and 2 blue cars. Joe is first in line for the ride and is assigned a car at random. Bill in next in line and is randomly assigned a car. What is the probability that both joe and bill will
asked by kira 
Macroeconomics
to raise funds at providing more support for public schools,a state government has just imposed a unit excise tax equal to $4 for each monthly unit of telephone services sold by each telephone company operating in the state. The diagram below depicts the
asked by Sue 
math 7th grade
Segment AB has endpoints A(3, 4) and B(5, 2). Segment AB is reflected over the y axis to form segment A’B’. What are the coordinates for the endpoints of A’B’? A. A’(3, 4) and B’(5, 2) B. A’(3, 4) and B’(5, 2) C. A’(3, 4) and
asked by Kyasia 
Chemistry
A 55.6g sample of water is cooled from 50 degrees C to 35.5 degrees C. How many calories released? How many kilocalories? How many joules?
asked by Anonymous 
physics
A soccer player kicks a rock horizontally off a 41.7 m high cliff into a pool of water. If the player hears the sound of the splash 3.08 s later, what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s.
asked by lau 
Math (URGENT)
A word problem. David flew 300km on a commuter plane, then 2000km on a passenger jet. The passenger jet flew twice as fast as the commuter plane. The total flying time for the journey was 3.25 hours. What was the speed of each plane, in kilometers per
asked by John 
chemistry
I need steps of solving this question Balance the oxidation reduction equation in electron ion / half reaction PbO2 + KCL = KCLO + KPb(OH)3 please best regards
asked by h a i a e 
MATH
The distance from A to B is d km and that from B to C is x km. if a bus maintains an average speed of 50km/hr between A and B and 60km/hr between B and C, it takes 3 hours to travel from A to C. If it maintains 60km/hr between A and B and 50km/hr between B
asked by Vivianne 
Pre Calc!
Two ships, one sailing at 30 km/hr and the other at 45 km/hr, left port at the same time. Three hours later they were 120 km apart. If you had to find the angle between their courses an equation that could be used to solve this problem is:
asked by Ilene 
algebra
Kim can mow the greens at golf course twice as fast as I can. Working together, we can mow them in four hours. How long will it take me to mow the greans alone?
asked by TinaG 
algebra
Mike can assemble a computer table in 40 minutes and I can do it in 60 minutes. If Mike works for 20 minutes before I join him, how long will it take us to finish?
asked by TinaG 
algebra
It takes Ted 20 minutes to paint a wall. Burt can paint the same wall in 30 minutes. How long will it take for the two of them to do the job together?
asked by TinaG 
consumer math
Trisha earns $17,500 per year. If she has 30% withheld for deductions, what is the net amount of her biweekly paycheck?
asked by peaches 
Macroeconomics
Suppose the economy has been experiencing zero inflation and five percent unemployment for several years. The government decides to lower the unemployment percentage by generating some inflation. You need to do the following: 1)create a graph showing what
asked by Joe 
chemistry
Taking the mass of the atmosphere to be 6.0E15 metric tons, what mass of carbon must be burned in order to increase the average carbon dioxide level in the atmosphere by 110ppm by volume (in metric tons)?
asked by Anonymous 
algebra 2b
Determine in which direction the parabola opens y equals x27x plus 18?
asked by elizabeth 
Math
The sum of tow numbers is 5, and their difference is 26. Find the two numbers.
asked by CB 
Finance
A CBS bond with a par value of $1,000, an interest rate of 7.625 percent, and a maturity of 10 years The bond is selling for $986. The required rates of return is 6 percent for the bond.
asked by Britt 
algebra
High speed copier works three times as fast as a regular copier. When both copiers are used, they can copy a group of documents in 12 minutes. How long would each copier require to do the copying alone
asked by TinaG 
Macroeconmics
to raise funds at providing more support for public schools,a state government has just imposed a unit excise tax equal to $4 for each monthly unit of telephone services sold by each telephone company operating in the state. The diagram below depicts the
asked by Sue 
Calculus
Find the Taylor polynomialof order 5 appoximation to sin(1.5)
asked by rob55 
math
Y^24y+3/y^29*4y+12/y22y+1= 16y^4+36/2y^5+8 check this please
asked by Elaine 
consumer math
Guy paid $3.59 for a 10ounce bag of cookies. What was the unit cost per pound?
asked by peaches 
Chemistry
Could a BronstedLowry acid not be an Arrhenius acid? Explain. Could someone explain the answer to me?
asked by Ana 
Algebra 2: Probability and Stats
The scores on an exam are normally distributed, with a mean of 77 and a standard deviation of 10. What percent of the scores are greater than 87? * 68% * 16% * 84% * 2.5%
asked by Skye 
Chemistry
A 55.6g sample of water is cooled from 50 degrees C to 35.5 degrees C. How many calories released? How many kilocalories? How many joules?
asked by Anonymous 
Calculus
Given vectors u= (t, 2t, 3) and v=(2t, 5t, 1). For what values of t a) are u and v parallel? b) are u and v perpendicular?
asked by Ria 
math
Tom drew a triangle with angle measures of 130°, 24°, and 26°. How would you classify Tom’s triangle based on the measures of the angles?
asked by Anonymous 
Chemistry
A gas occupies a 1.5 liter container at 250C and 2.0 atmospheres. If the gas is transferred to a 3.0 liter container at the same temperature, what will be the new pressure?
asked by Gabriel 
Logic and Design
Hi, I need help with my program and logic Homework. Here is the problem: Velma and her husband Victor run a full service veterinary clinic. They would like a program to help them calculate costs for their clients. Victor, who is the vet, charges a flat fee
asked by David 
math
2/3x+1/x=1/6 2x+3x=1/6 5x=1/6 check problem
asked by frances 
Chemistry
The substitution of a monosubstituted benzene is regioselective. If it had been completely random, what would you expect the ortho:meta:para product ratio be? And why?
asked by Norman 
System operations management,
How might an operations manager improve the operational components of planning, sourcing , making and delivering that was applied inappropriately
asked by Sahna 
accounting
what is the percentage of 600000 tha equals 120000
asked by revonda 
Math
How do I do 6y/5x + 3y/10?
asked by Daniel 
algebra
How many kilograms of water must be evaporated from 10kg of an 8% salt solution to produce a 25% salt solution
asked by TinaG 
consumer math
Nadia bought 200 shares of stock at 34 1/2. She had to pay a 1% commission to her broker. What was the total price of the stock?
asked by peaches 
geography / 8 grade
Where do most of the people in the countries of southasia live? village. correct? thanks..
asked by natalie 
ChemistryCould you check this, please?
I have a balloon that contains 22 grams of Carbon dioxide. The barometric pressure is 1019 millibars which I converted to 1.006 Atm and the temperature is 299 "K". What is the volume of balloon? I used the ideal gas law to find out the volume in liters of
asked by JamieLyn 
chemistry
Calculate the concentration of SO2(ppm) that must be reached in polluted air (in ppm) if the dissolved gas is to produce a pH of 3.2 in raindrops without any oxidation of the gas.
asked by Anonymous 
business writing
I need to write an application letter responding to a job ad for an office asst position. This letter should accompany my resume.
asked by Ivette 
math
i don't know get this question 1. last saturday emily rented 4 movies from the video store. this saturday she rented 2 movies. let x represent the cost of renting each movie. write and simplify an expression for how much more emily spent last week renting
asked by Sara! 
Math
A basketball player has a 40% shooting average from the freethrow line. If she takes two free throws, estimate the probability that she will make both of them. Use the following list of digits which was taken from a table of random numbers. Let the digits
asked by Anthony 
algebra
3/x+5/3x=1 9x+5x=1 14x=1 x=13 is this right
asked by Angelia 
physics
mass = 46 kg, angle 20 degrees, tension 240 newton , coefficient of kinetic friction = 0.5 find acceleration of the object
asked by Anonymous 
math
i don't get this question consecutive integers are integers that differ by one. you can represent consecutive integers as x,x+1,x+2 and so on. write an equation and solve to find 3 consecutive integers whose sum is 33 how do you solve this
asked by Sara! 
English
Why is the telephone convenient? 1. We don't have to talk face to face. 2. We don't have to write letters to someone that is far away from us. 3. We don't have to write letters to people who are far away from us. 4. We don't have to visit others' houses to
asked by rfvv 
math
consecutive even integers can be represented by x,x+2,x+4 and so on. write an equation and solve to find 3 consecutive even integers whose sum is 54.
asked by Sara! 
chemistry
why do batteries keep their charge if kept in a refrigerator over a long period of time
asked by ciearra 
10th grade
a rhombus has a perimeter of 44 centimeter and a diagnol 12 centimeters long. wat the area?
asked by trey 
physics
4. Two masses of 3 kg and 5 kg collide headon, the former moving to the right with the speed 5 m/s and the latter moving to the left with the speed 3 m/s.After collision they stick together. What amount of mechanical energy is lost? 5. A cylinder with a
asked by ray 
physics
2.A ball rolls off a shelf with a horizontal velocity of v. At what horizontal distance from the shelf does the ball land if the height of the shelf is h above the floor? 3. A car travels around a circle with a diameter of 500 m at a constant speed of 25
asked by ray 
math
Find two fractions that are equivalent to each fraction: 2/5, 7/11, 15/23 and 150/325 and how do i solve it?
asked by joshuah 
College Chemistry
For my homework I got this problem that my professor never went over in class how to do it and I don't know how to interpret it. A chemist runs a second order reaction of A>B starting at 10mili moles/L concentration of A (and no B). After one hour the
asked by Sarah 
geography
Where does lake Tanganyika lie? The Eastern border of.Tanzania. is my answer right?
asked by natalie 
Internet Basics
Which of the following tools is best for accessing Web pages and connecting to the Internet? ISP Modem Search Engine Browser
asked by Karin 
please helpalgebra
Give the equation of the line that passes through point ( 1, 3) and is parallel to the line y = 2x  8.
asked by Tina 
Chemistry. help please
Could a BronstedLowry acid not be an Arrhenius acid? Explain. Could someone explain the answer to me?
asked by Ana 
Englishcover letter
This is the first sentence of my cover letter. Should I use "for" or "at"? Or is there a better way to phrase this sentence? I am writing to express my interest in working for [Company name] or I am writing to express my interest in working at [Company
asked by Janice 
algebra
How many kilograms of pure alcohol must be added to 40 kg of a 70% alcohol solution to produce an 85% alcohol solution?
asked by TinaG 
math
Solve for a: 1/a+1/b=1/c
asked by jerson 
History
How did the minority groups’ struggle for civil rights begin in the 1950s? Which event from this time do you think was most responsible for bringing public attention to the American Civil Rights Movement? Explain why you selected this event. o Respond to
asked by Happy school 
English 12
In the short story defender of the faith by philip roth,Grossbart insists on caling da sergeant 'sir'.Why doz Marx object?Is dis form of adress merely an oversight,or doz Grosbart hav sum ulterior motive?
asked by Stella 
business
Before the UCC and the UCITA, what was one of the first, and most significant, of the U.S. government's attempts to promote uniformity in commercial laws from state to state? (Hint: think of commerce and Constitution.) Based on the information presented
asked by Anonymous 
English
What is an antithesis? and I can i create one if my thesis is "Using the characters in these literary pieces both authors assert that humans are naturally inclined to exhibit dark or evil side". My 3 arguments are that metamorphises, quest for the surreal
asked by Raven 
Math
What is 2x + 6y = 12? I need to find y, the slope, and the yintercept. Please help!
asked by Daniel 
Biology
Why must muscels cross a joint to be involved in bodily movement?
asked by Sam 
Chemistry
How many grams of liquid water can be solidified by the release of 0.75kJ of heat? Would the first step be (0.75 kJ)(1 mol/6.01 kJ) ?? Thanks
asked by Anonymous 
chemistry
. How many grams of potassium chloride, KCl, are needed to prepare 0.630 L of a 2.50 M solution of potassium chloride? (4.0 points) (Points :4) 1.575 M 117 g 2.54 m 23.19 g
asked by Anonymous 
precal
Use logarithms to solve log 8 / log x < 1. I understand that there are 2 cases: when x is negative or positive. I don't understand how it affects the answer though.
asked by mike 
Physics
What is the centripetal acceleration of a skater moving with a tangential speed of 2.0 m/s in a circular path with radius 2.0 m?
asked by James 
Math Analysis
Can someone check my answers please? Thank you! If tan x = 3/5, evaluate: 1) tan 2x 2) tan 3x ==> For #1, I got 15/8; for #2, I got 99/5. Are these answers correct?
asked by Emily 
Chemistry
For each: Always true /sometimes true/never true. 1) the joule is the SI unit of force 2)the standard heat of formation for a substance is determined at 100 degrees C 3)all free elements in their standard states have a heat of formation of zero.
asked by Anonymous 
math
I'm struggling with this problem and can't find a good example in my book of how to solve. solve for y y1/x0=3 thanks in advance
asked by Jarzine 
chemistry
How many grams of solute are in each of the following solutions? 18.4 mL of a 9.50 m H3PO4 solution
asked by Ashley 
Genera Chemistry
Balance the following equations: a. C + O2 CO b. CO + O2 CO2 c. H2 + Br2 HBr d. K + H2O KOH + H2 e. Mg + O2 MgO please explain and show work.
asked by Kendra 
maths
Ryan has the numbers 1–30 listed on individual index cards. If Ryan randomly selects 1 card, what is the probability that it will be a multiple of 3 or a multiple of 11?
asked by venki 
Science
Why is rain normally acidic, what creates acid rain? Also What is SAV? THANKS!!
asked by smiley face 
chemistry
a mixture of 3 gases a, b and c is at a total pressure of 6.11 atm the partial pressure of gas a is 1.68 atm, that of gas b is 3.89 atm. what is the partial pressure of gas c?
asked by jordan 
consumer math
Jim paid $3.99 for a 14ounce bag of cookies. What was the unit cost per pound?
asked by peaches 
lal
present and past participle i have to write if each participle are past or present. are my answers correct 1. everyone has wondered(past participle)what the great detective was thinking(present participle) 2. carol has rescued(past part.)the
asked by Sara! 
algebra 2 / trig
what is the square root of negative 150?
asked by Allison 
physics
Suppose a rock fell off a cliff. After 5 seconds, its speed well be 100 m/s
asked by Anonymous 
math
solve this equasion4x18+3x+20=4
asked by jordan 
Statistics
The psychologists are interested in whether depressed people undergoing group therapy will perform a different number of activities of daily living before and after group therapy. Therefore, the psychologists have randomly selected 8 depressed clients in a
asked by Ashley 
chemistry
i need steps of solving this question Balance the oxidation reduction equation in electron ion / half reaction please best regards
asked by h a i a e 
Maths
Assuming the lord of the rings film trilogy contains 4.4 GB of data, how long would it take to download via 2Mbps connection? In seconds?
asked by DezQ 
math help please
x+4/5x+3/3=7/15
asked by jerson 
history
„X Choose one social, economic, or political event that you studied from each of the five decades following World War II¡X1950s, 1960s, 1970s, 1980s, and 1990s¡Xthat you think had a more powerful impact on the American people than other events within
asked by jajuan 
geogrraphy
what is the second most highly populated country in north Africa? Algeria Correct?
asked by natalie 
Science
I have to create a powerpoint presentation for my science class and I am not sure if i only hav eto put cications on the slides, or it i put them in the speakers notes as well.
asked by Amanda 
college physics
A car travels around a circle with a diameter of 500 m at a constant speed of 25 m/s. The static friction coefficient is 0.3 and the kinetic friction coefficient is 0.2. Will the car skid?
asked by Anonymous 
English
Wha are the nouns that describe a person called? They are like a noun that describe's a person's perosnality, such as perfectionist, troublemaker, bookworm etc.
asked by Emily 
Algebra
Two varieties of herbal tea, one cost $4.00 per kilogram other cost $5.00 per kilogram. How many kilograms of each type are needed to make 20kg of a blend worth $4.60 per kilogram?
asked by TinaG 
CALCULUS
Under what conditions does proj of a on b = proj of b on a for two non zero vectors? Show why.
asked by Abigail 
algebra
How many kilograms of water must be evaporated from 10kg of an 8% salt solution to produce a 25% salt solution
asked by TinaG 
Algebra
It takes Ted 20 minutes to paint a wall. Burt can paint the same wall in 30 minutes. How long will it take for the two of them to do the job together?
asked by TinaG 
biology
A reason why 2 different species of birds in the same area might not breed with eachother is because?
asked by Taylor 
Medical Transcriptionist
I need help with this scenario please!Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth
asked by Kay 
General Chemistry
Balance the following equations: a. C + O2 CO b. CO + O2 CO2 c. H2 + Br2 HBr d. K + H2O KOH + H2 e. Mg + O2 MgO please explain and show work.
asked by Kendra 
Simple Chem Question: Please Answer
I can't remember if the reactant always on the left side and the product on the right side? 1 Ex: CaO + H2O arrow Ca(OH)2 2 Ex: 2NaHCO3 arrow Na2CO3 + H2O + CO2
asked by Anonymous 
General Chemistry
3.71 When potassium cyanide (KCN) reacts with acids, a deadly poisonous gas, hydrogen cyanide (HCN), is given off. Here is the equation: KCN(aq) + HCl(aq) > KCl(aq) + HCN(g) If a sample of 0.140 grams of KCN is treated with an excess of HCl, calculate the
asked by Kendra 
math
20 divided 2 minus 24 divided by 3 equals ? No parenthesis
asked by Zach 
Physical Chemistry
When 1.33 g of a nonpolar solute was dissolved in 50.0 g of phenol, the latter's freezing point was lowered by 1.454°C. Calculate the molar mass of the solute. The kf of phenol is 7.27 (K·kg)/mol. What is the normal boiling point of an aqueous solution
asked by Anonymous 
world history
how did president wilson use russia's revolution in march of 1917 to gain support for the war?
asked by Anonymous 
Math Trig
Suppose that X is an angle in standard position and that X' is it's reference angle. If cosX = 4/ squareroot of 17. find the exact value of cosX' is it 4/square root of 17?
asked by kyu 
chemistry
1.0 of a 4.0 solution is added to water so that the final volume is 8.0 .
asked by tasha 
algebra
Reported can be printed in 55 minutes by one machine. A second machine can print the report in 66 minutes. How long will it take to print the report with both machines operating?
asked by TinaG 
calculus
What conditions must be satisfied by vectors u and v for this to be true? u + v >u  v
asked by Abigail 
Algebra
7X4+3X=23+X Can you show the steps? The answer is X=3
asked by Chelsea 
world history
Who was the Columbian Exchange named after and why?
asked by ali 
physics
a caribu trecks 125m at 35 degrees west of south, and then 105m west. what is the caribus resultant displacement
asked by ang 
Chemistry
Explain why when you microwave a plate of steak and potatoes, the potatoes heat up first.
asked by Kaj 
Geometry
A small circular pool is enclosed in a square. Find the area inside the square, but outside the circle. The Square is 4.3m x 4.3 m
asked by Maghan 
Geometry
If the surface area of a sphere decreases, will the value of the volume remain the same?
asked by Don 
Algebra 2: Prob and Stats
Find the sample size that produces the margin of error +4.0% a) 325 b) 25 c) 16 d) 625
asked by Skye 
science
name 3 places whwere surface water might be stored
asked by linze 
Math
Anyone know about how much a button weighs in mg?
asked by Don 
Chemistry
How many grams of Ni(OH)2 are produced from the reaction of 30.0 mL of 1.75 M NaOH solution?
asked by Lynn 
science
how is groundwater in underground aquifers refilled as humans pump it out to use?
asked by linze 
LAL!
what are the to be verbs and to have?
asked by Sara! 
math
Let f(x)=4x4and g(x0=x^2+3x, find (f o g)(6).
asked by CB 
college algebra
x/2x/x4=4/x4=4x^2/2 check this please
asked by Gregory 
Advance Math
Find solutions of the equation in the interval [0, 2pie} Cos(x+pie/3)+Cos(xpie/3)=1 I need to show work without calculator and be able to check in order for it to work Thanks for help
asked by Mike 
English
1. Solar energy will never give out. 2. Solar energy will never run out. (Are both the same?) 3. We bought many foods. 4. We bought much food. (Which one is right? Are both OK? Is food a material noun, a common noun or a collective noun? In dictionaries,
asked by rfvv 
Chemistry
25g of a breakfast cereal contain 110 calories. How many calories are released per gram? Convert the answer above to joules.
asked by Anonymous 
Chemistry
For each: Always true /sometimes true/never true. 1) the joule is the SI unit of force 2)the standard heat of formation for a substance is determined at 100 degrees C 3)all free elements in their standard states have a heat of formation of zero.
asked by Anonymous 
ethnicity
• National organizations such as the Bureau of Indian Affairs, the National Congress of American Indians, and the National Indian Gaming Association are dedicated to Native American affairs. What effect have these organizations had on reducing tribal
asked by mariaaa 
chemistry
why is the osmotic pressure of 10 mole solution sodium chloride larger than that of sodium nitrate solution
asked by taher 
Microeconomics
1. Demand can be perfectly elastic or inelastic.Discuss. 2. Discuss 3 main properties of indifference curves(15marks) b) Describe marginal rate of substitution.
asked by Annmarie 
math ( CHECK MY WORK)
1. on 3 tests, a student scored a total of 258 points. if the student improved his performance on each test by 5 points, what was the score on each test a. 81,86,91 b. 80,85,90 c. 75,80,85 d. 70,75,80 is the correct answer A. 2. an item costs x dollars.
asked by Sara! 
Calculus
Find the volume of the tetrahedron with verticies (1,1,2), (3,4,6), (7,0,1) and (1,5,8).
asked by Anonymous 
powerpoint presentation
When making a powerpoint presentation, do you put the citations on the slide or in the speakers notes or both? Thank you.
asked by Amanda 
math
solve for x x+4/5x+3/3=7/15
asked by jerson 
science
The "I WONDER...." PROJECT FROM SCHOOL.I AM TO COMPLETE THE QUESTION AND THEN RESEARCH THE FINDINGS ON A DISPLAY BOARD AND PRESENT IT TO THE CLASS.MY QUESTION IS CAN PAPER BE MADE FROM SOMETHING OTHER THEN TREES?I NEED SOME SOURCES OTHER THEN THE WEB.ANT
asked by amie 
English
Can you please consider these sentences from a grammatical and lexical point of view? Thank you in advance. 1) Since the last years of the 19th century Europe started to live a very deep crisis. (Since the last years.... had been experienced?) 2) Freud
asked by Franco 
english
explanation and description no child left behind
asked by teresa 
12th grade
what is the analogie for abject:miserable
asked by Kiara 
health
What are the three most significant concepts you have learned in this course that you would include in a speech supporting incorporation of health psychology concepts in health care policy ...
asked by Anonymous 
math please help
Give the equation of the line that is perpendicular to the line y=x+4 and passes through point (0, 1).
asked by Tina 
English
Is there a verb for "question someone doubtfully or suspiciously"?
asked by Emily 
physics
A car is traveling with a constant speed 80 miles per hour a road that makes half a circle. What is the average velocity of the car?
asked by ray 
alegebra 1
would 3x^215x+18 = x(x+5)(x3)????
asked by bri 
geography
What island country of southern africa has plants and wildlife found in no other country? Madacascar . correct?
asked by natalie 
geography
Where does one of the hottest and driest areasof africa run along? I am not sure is it atacama desert
asked by natalie 
physics
A car is traveling with a constant speed 80 miles per hour a road that makes half a circle. What is the average velocity of the car? Is it: 80(pi/2)=125.6? or should I use the formula: Äd/Ät= 80/(pi/2)=50.95?
asked by Anonymous 
COM 220
The news from China in recent weeks has been dire. Violent strikes and protests are reported almost daily. Millions of workers are out of jobs. Economic indicators presage more gloom, with electricity production for industry falling 4% in October, the
asked by Amanda 
algebra
a ladder is against a building. The distance from the bottom of the building to the ladder is 9 feet less than the length of the ladder. How high up the side of the building is the top of the ladder if that distance is 2ft. less than the length of the
asked by amanda 
college algebra
3/t3=5/t+4 3(t+4)(t3)(5) check this problem
asked by Gregory 
physics
A ball rolls off a shelf with a horizontal velocity of v. At what horizontal distance from the shelf does the ball land if the height of the shelf is h above the floor?
asked by Anonymous 
math
Find the center and radius of the circle. (x  1)^2 + y^2 = 36
asked by Tina 
water tests...
Which test is for biotic factors? Which is standard? What is a nutrient, how does it get in water, where does it come from, what does it do?????
asked by big red 
HCR 210
I have an assignment for week 4 in HCR210 due Sunday. We are to interview small, mediumsized and large medical facilities and ask 13 questions regarding medical/patient records. There are no facilities in my area willing to disclose any information for
asked by Cathy 
English
Thank you for your invaluable help. Can you please consider these sentences, too? 1) As for her behaviour, she cried when she saw a mouse caught in a trap. 2) He makes a potrait of English society but he does not portray the aristocracy and the peasants.
asked by Franco 
calculus
A box is dragged with a force of 115 N up a ramp a distance of 3 m. If the force makes an angle of 35 degrees with the ramp and the ramp makes an angle of 20 degrees with the ground, how much work is done?
asked by Anonymous 
HRM
what are the disavantages of job analysis?
asked by Maria 
Algebra
Two kinds of nuts, one cost $5.00 per kilogram another cost $5.40 per kilogram. How many kilograms of each type of nut should be mixed in order to have 40 kg of a mixture worth $5.25 per kilogram?
asked by TinaG 
foster
joe researcher asks for access to patient records as part of a research project. what should the health information manager do?
asked by Machell 
algebra
Reported can be printed in 55 minutes by one machine. A second machine can print the report in 66 minutes. How long will it take to print the report with both machines operating?
asked by TinaG 
physics
A ball rolls off a shelf with a horizontal velocity of v. At what horizontal distance from the shelf does the ball land if the height of the shelf is h above the floor? can anyone at least give me the formulas to work with?
asked by Anonymous 
geometry
perimeter of right triangle equals 1400 and hypotenuse equals 600 how do you find out what legs measure
asked by babs 
science
What mass of water will give up 230 calories when its temperature drops from 80°C to 53°C?
asked by Anonymous 
English 12
In the short story defender of the faith by philip roth,Identify the criteria by which Captain Barrett judges a man's character.
asked by Stella 
English 12
In the short story defender of the faith by philip roth,Why does Marx refuse to support Grossbart when the Captain questions him about his eating habits?
asked by Stella 
English12
In the short story defender of the faith,by philip roth,Explain 3 occasions where Grossbart tries to "manipulate" Marx.Is he successful in his attempts?
asked by Stella 
English12
In the short story defender of the faith by philip roth,Outline 3 occasions where Grossbart accuses Marx of being Prejudiced against his own people(jews)
asked by Stella 
geography
Where does lake Tanganyika lie? The Eastern border of. Democratic Republic of the congo. is my answer right?
asked by natalie 
English12
In the short story,defender of the faith by philip roth,What incident finally convinces Marx to punish Grossbart?
asked by Stella 
English12
In the short story defender of the faith by philip roth,what is the theme of the story?Justify 150 words
asked by Stella 
Algebra
How do you find the roots to x^26x+3
asked by KR 
Physics
What is the speed of an object in circular motion called?
asked by James 
Chemistry
25g of a breakfast cereal contain 110 calories. How many calories are released per gram? Convert the answer above to joules.
asked by Anonymous 
Physics
What term describes a force that causes an object to move in a circular path?
asked by James 
Physics
A centripetal force acts
asked by James 
Physics
Centripetal force can be calculated from centripetal acceleration by?
asked by James 
writing
o Many professional athletes use steroids, in spite of the fact that they are banned by official sports organizations. Answer the following questions regarding the topic that you have chosen: Which kinds of supporting paragraphs—examples, details,
asked by Anonymous 
College Chemistry
For my homework I got this problem that my professor never went over in class how to do it and I don't know how to interpret it. A chemist runs a second order reaction of A>B starting at 10mili moles/L concentration of A (and no B). After one hour the
asked by Sarah 
Science, Chemistry
How many calories would be needed to heat 1.65 kg of gold from 12 degrees C to 25 degrees C?
asked by Nicole 
Algebra 2
Solve the inequality 12+4x>16 and graph the solution set.
asked by Danielle 
trigonometry
solve sin(2θ)+1=0 on the interval 0≤θ≤2pi
asked by Anonymous 
algebra
what is the square root of 3 and180h^4
asked by Tinkerbell 
math
nick had 1 3/4 gallon of milk. how many pints of milk does nick have?
asked by alex 
middle school science
Why are wetlands called transition zones? Also, how can oxygen be depleted in a body of water? Please help! thanks!
asked by schoolgirl 
6th grade
can some one help me i need help wit animal habitats
asked by cassidy 
maths PLEASE HELP
how do you solve this for x i keep getting stuck with x in too many places 4^x 6(2^x) 16 =0 i assume you have to use ln but i think im missing a step because i just get something which is more complicated than what you start with thank you
asked by jessie 
Science
Which water quality test is the most important test for the health of a water ecosystem? Thanks
asked by big red 
physics
What is the total resistance in a parallel circuit with a 10 ohm lamp and a 15 ohm lamp?
asked by maryanne 
please help
Give the equation of the line that is perpendicular to the line and passes through point (0, 1).
asked by Tina 
world history
the jews who lived scattered around outside of judah are called the
asked by any 
English
Can you please check if the following sentences are possible? Thanks in advance. 1)Sterne breaks the rule of the conventional biography since Tristram’s birth occurs only in the third episode. 2)Furthermore, he doesn’t follow a storyline since the
asked by Franco 
AED 204
In 200 to 300 words name two other factors that have potential to prevent equality in education. Elaborate on the two you choose. Other than the obvious obstacles of prejudice and discrimination (such asa, boys getting more attention than girls; minorities
asked by Rayna 
calculus
Find the equation of the tangent line to the graph of f(x)=4ln(9x+2)at the point of xcoordinate x=2.
asked by JER 
career
If two jobs are upon you which one do you take the more sucessful one which you do not like the actions taking place or the less sucessful one which you kinda like.
asked by ali 
math
Find the slope of the line passing through the points (7, 0) and (0, 10).
asked by chris 
Math
solve sin(2θ)+1=0 on the interval 0≤θ≤2pi
asked by Julie