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Questions Asked on February 15, 2012

A commuter airplane starts from an airport and takes the route shown in the figure below. The plane first flies to city A,
1. 5 answers
2. asked by anonymous
3. 14,482 views
A playground is on the flat roof of a city school, 5.8 m above the street below (see figure). The vertical wall of the building
1. 3 answers
2. asked by anonymous
3. 13,699 views
Sufficient strong acid is added to a solution containing Na2HPO4 to neutralize one-half of it. what will be the pH of this
1. 5 answers
2. asked by ERAGON
3. 7,500 views
What would be the pH of a solution prepared by combining equal quantities of NaH2PO4 and Na2HPO4? Explain with an equation.
1. 4 answers
2. asked by ERAGON
3. 7,316 views
Mercury reacts with oxygen to produce mercury(II) oxide.Hg(l) + O2(g) → HgO(s) a. Balance the reaction equation. Include
1. 2 answers
2. asked by krystal
3. 6,847 views
Phosphoric acid is triprotic acid (three ionizable hydrogens). The values of its stepwise ionization constants are Ka1= 7.5E-5,
1. 5 answers
2. asked by NIKITA
3. 5,993 views
How many genetically different gametes can be produced from a diploid cell with seven chromosome pairs?
1. 2 answers
2. asked by Rebecca
3. 5,187 views
A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a
1. 1 answer
2. asked by HH
3. 4,218 views
What is disposal of fullness
1. 3 answers
2. asked by Ese
3. 3,728 views
Elemental mercury was first discovered when a mercury oxide was decomposed with heat, forming mercury metal and oxygen gas. When
1. 3 answers
2. asked by Adam
3. 3,607 views
The purity of a pharmaceutical preparation of sulfanilamide, C6H4N2O2S, can be determined by oxidizing the sulfur to SO2 and
1. 2 answers
2. asked by darren
3. 3,584 views
Mercury has a density of 13600 kg/m3. At what depth in millimetres is the pressure in mercury equal to that of standard
1. 1 answer
2. asked by Kaiz
3. 3,356 views
Phenolphthalein would not be an appropriate indicator to use to determine the Ka1 of phosphoric acid Why not? what indicator
1. 2 answers
2. asked by ERAGON
3. 3,152 views
A boat is pulled into a dock by means of a winch 12 feet above the deck of the boat. The winch pulls in rope at a rate of 4 feet
1. 2 answers
2. asked by Anonymous
3. 3,056 views
Which statement does NOT characterize Martin Luther King Jr.'s "I Have a Dream" speech?1.)It openly criticized the Governor of
1. 5 answers
2. asked by Sierra
3. 2,984 views
A wire of length L and cross-sectional area A has resistance R. What will be the resistance R_stretched of the wire if it is
1. 5 answers
2. asked by Melissa
3. 2,885 views
All of the following statements regarding the Monroe Doctrine are correct EXCEPT?A. Issued by Monroe in response to an onslaught
1. 3 answers
2. asked by student
3. 2,867 views
Comic-strip hero Superman meets an asteroid in outer space, and hurls it at 750 m/s, as fast as a bullet. The asteroid is three
1. 4 answers
2. asked by Jason
3. 2,662 views
The perimeter of rectangle ABCD is 256 inches. It's length is 3 times as long as its width. Find the area of triangle ABC.
1. 3 answers
2. asked by zach
3. 2,615 views
We are studying pythagorean Theorem. How do I set this up to solve?A jogger goes half a mile north and then turns west. If the
1. 3 answers
2. asked by Jane
3. 2,423 views
Aluminum metal reacts with oxygen gas (O2) to form aluminum oxide.a. Write a balanced equation for this oxidation-reduction
1. 5 answers
2. asked by krystal
3. 2,369 views
What is the magnitude of an electrostatic force experienced by one elementary charge at a point in an electric field where the
1. 2 answers
2. asked by Zen
3. 2,294 views
Reactions in which a substance decomposes by losing CO are called decarbonylation reactions. The decarbonylation of acetic acid
1. 1 answer
2. asked by Anonymous
3. 2,270 views
1. During this time period, writers sought to capture the _____________ of the American people during this era of a new postwar
1. 5 answers
2. asked by Sara
3. 2,253 views
Using scientific concepts, explain how can you have your grandfather's eyes and your grandmother's nose.
1. 3 answers
2. asked by Rebecca
3. 2,077 views
What multiplication fact could you use to find a number that can be divided equally by 8 and 9? My answer is 8 x 9 = 72. Is this
1. 4 answers
2. asked by sheila
3. 2,033 views
The 3rd term of an AP is 10 more than the first term while the fifth term is 15 more than the second term.find the sum of the
1. 4 answers
2. asked by Magana
3. 1,880 views
A roller coaster (375. kg) moves from A (5.00 m above the ground) to B (28.0 m above the ground). Two nonconservative forces are
1. 1 answer
2. asked by Anonymous
3. 1,850 views
A nickel pyramidal paper weight has a square base of sides 5 cm and a height of 3 cm. What is the mass of a dozen such paper
1. 2 answers
2. asked by Kevin
3. 1,772 views
the outer edge of a circular track is 440 m long.if is widened by 5m all around,find the cost of widening it at rate of 8 rs per
1. 2 answers
2. asked by prashita
3. 1,768 views
The variables arr1 and arr2 have been declared as pointers to integers. An array of 10 elements has been allocated, its pointer
1. 1 answer
2. asked by Erika
3. 1,668 views
10. If you're introducing the company's president, Mr. Schott, to a visiting sales representative, Ms. West, you would say,A.
1. 3 answers
2. asked by Brenna
3. 1,581 views
calculate the specific heat of 200g of substance whose temperature is 30 degree celcius if it is mixed with 200g of water heated
1. 1 answer
2. asked by albert
3. 1,563 views
The probability that a student passes Biology is 0.35 and the probability to pass Chemistry is 0.63. If the probability to pass
1. 2 answers
2. asked by Anonymous
3. 1,560 views
How to prepare 1L of 96% v/v ethanol from 99% v/v ethanol? Can you show me the calculation steps?Thanks.
1. 1 answer
2. asked by anne
3. 1,493 views
A density bottle has a mass of 35g when empty,85g when filled with water and 75g when filled with kerosene.Calculate the density
1. 3 answers
2. asked by Luc
3. 1,453 views
A conical tank has a diameter of 9ft and is 12 ft deep. If the tank is filled with water of density 62.4 ft/cubic ft, how much
1. 1 answer
2. asked by Anonymous
3. 1,425 views
On standard IQ tests, the mean is 100 and the standard deviation is 13. The results are very close to fitting a normal curve.
1. 2 answers
2. asked by Anonymous
3. 1,400 views
A man with a mass of 50 kg stands up in a 66-kg canoe of length 4.0 m floating on water. He walks from a point 0.75 m from the
1. 2 answers
2. asked by sara
3. 1,390 views
Explain how to do these questions~1. An object moves in a straight line with its position at time t seconds given by s(t) =
1. 4 answers
2. asked by Jake
3. 1,365 views
a human being requires 2700Kcal of energy per day.if the enthalpy of combustion of glucose is -1350Kcal/mol.how many grams of
1. 7 answers
2. asked by werksow
3. 1,338 views
Evaluate the discriminant of each equation. Tell how many solutions each equation has and whether the solutions are real or
1. 1 answer
2. asked by TENKAICHI
3. 1,323 views
Find a linear equation whose graph is the straight line with the given property.Through (5, 9) with slope 2 I can't find the
1. 1 answer
2. asked by Amie
3. 1,319 views
If 50% of the students in your class are men and 20% of the students have blond hair, which of the following describes the
1. 2 answers
2. asked by Marche
3. 1,311 views
to measure the height of the Eiffel Tower in Paris, a person stands away from the base and measures the angle of elevation to
1. 0 answers
2. asked by Donielle
3. 1,300 views
How much simple interest would Kaitlyn earn on $300 at 6% for 6 months?A. $9 B.$18 C.$54 D.$27 mY ANSWER IS (B)
1. 1 answer
2. asked by Brenna
3. 1,264 views
You are a lab technician and must create 250 ml of a 17% salt solution. You have available three stock solutions. You have a one
1. 3 answers
2. asked by Fatih
3. 1,247 views
Identify the following compound from its IR and proton NMR spectra.C6H10O: NMR: 3.31 (3H, s); 2.41 (1H, s); 1.43 (6H, s) IR:
1. 1 answer
2. asked by Suzan
3. 1,242 views
Consider the reaction 3CH4(g)= C3H8(g)+ 2H2(g).Calculate Delta G at 298 K if the reaction mixture consists of 40 atm of CH4 ,
1. 0 answers
2. asked by Anonymous
3. 1,228 views
An apple weighs 2 KG. The earth exerts a force of 20 Newtons on the apple. How fast does the apple fall ? ( 1 Newton = kg/m/s2)
1. 1 answer
2. asked by steve o
3. 1,196 views
One gallon of liquid occupies 231 cubic inches. Write a rule that expresses the number of gallons g(c) as a function of the
1. 1 answer
2. asked by Samantha
3. 1,191 views
CaCo3(s)+2HCl(aq)---->CaCl2(aq)+H2O(l)+CO2How many grams of calcium chloride will be produced when 27.0g of calcium carbonate
1. 0 answers
2. asked by danielle
3. 1,186 views
1-Butene (CH2=CHCH2CH3) burns in the presence of O2 to produce CO2 and H2O. Write the balanced chemical equation for this
1. 1 answer
2. asked by krystal
3. 1,173 views
I have to use integration by parts to integrate tan^-1 (1/x)dx. I'm not sure what to use as u or dv. We were taught to use
1. 1 answer
2. asked by Elaine
3. 1,170 views
A hunter at a distance dx from a coconut tree points the nuzzle of his gun directly at a monkey sitting on the tree at a height
1. 1 answer
2. asked by elise
3. 1,162 views
rename the fraction 2/9 in eighteenths
1. 3 answers
2. asked by Anonymous
3. 1,161 views
What is the answers and break down of them,Typing hint: Type x 2 as x^2 (shift 6 on the keyboard will give ^) 1) Solve the
1. 0 answers
2. asked by jim
3. 1,161 views
what be theme of this story?move on with life? don't look back at past? also i not understand the title of story. i before
1. 5 answers
2. asked by Mohammad
3. 1,152 views
solve and check each of the following quadratic equation(1) x^2=6x (2) x^2=3x (3)x^2=17x (4) x^2=5x+6 (5) x^2+9x=10
1. 1 answer
2. asked by tanya
3. 1,145 views
A square kitchen has an area of 100 square feet. What is the kitchen's perimeter?
1. 3 answers
2. asked by cindy
3. 1,144 views
If cosecant of theta equals 3 and cosine of theta is less than zero, find sine of theta, cosine of theta, tangent of theta,
1. 1 answer
2. asked by Ana
3. 1,143 views
I need a good thesis statement for my continuity and change over time informative essay on Hinduism, but I don't know how to
1. 1 answer
2. asked by Dora
3. 1,137 views
1. Which way of asking for action carries the highest level of politeness? (Points: 5)A polite order An indirect request A
1. 1 answer
2. asked by sososola2012
3. 1,131 views
The power output of a tuba is 0.39 W.At what distance is the sound intensity of the tuba 1.4 × 10−3 W/m2? Answer in units of
1. 1 answer
2. asked by dizzy
3. 1,129 views
A force 1 of magnitude 7.20 units acts on an object at the origin in a direction θ = 29.0° above the positive x-axis. (See the
1. 0 answers
2. asked by Haroula
3. 1,128 views
this is the hardest problem people said it was the hardest andf they can not solve itcan anyone solve this please it is hard In
1. 0 answers
2. asked by zachary stanich
3. 1,118 views
Hayes Warehouse distributes hardback books to retail stores and extends credit terms of 2/10, n/30 to all of its customers.
1. 1 answer
2. asked by Casey
3. 1,117 views
Balance the equation and answer in terms ofmoles. Chlorine gas can be produced commercially by passing an electric current
1. 1 answer
2. asked by jack
3. 1,115 views
Suppose that the company Mama's Pies adds another store to sell its pastries. Supposed that it costs $400,000 to build the new
1. 2 answers
2. asked by marry
3. 1,079 views
An invoice quotes a price of $620 subject to discount of 30%, 15%, and 5%. What is the selling price price? round off to the
1. 1 answer
2. asked by Brenna
3. 1,076 views
Aluminum and oxygen react to form aluminum oxide.4 Al + 3 O2 2 Al2O3 a. What is the limiting reactant if 36.4 g Al are reacted
1. 1 answer
2. asked by krystal
3. 1,074 views
Today, decisions in planning, selecting, and/or creating artwork for public display are made in the following way.Choices are:
1. 2 answers
2. asked by Samantha
3. 1,073 views
Consider the reaction 3CH4(g)= C3H8(g)+ 2H2(g).Calculate Delta G at 298 K if the reaction mixture consists of 40 atm of CH4 ,
1. 1 answer
2. asked by Tasha
3. 1,070 views
The temperature F, in degrees Fahrenheit, that corresponds to a temperature C, in degrees Celsius, is given by the equation F =
1. 0 answers
2. asked by Algebra need help
3. 1,068 views
how many moles of oxygen are required for the combustion of 25.5 g of magnesium
1. 2 answers
2. asked by mike
3. 1,060 views
If you are holding a 20kg dumbbell straight out at arms length assuming your arm is .69 m long, what tourque is the dumbbell
1. 2 answers
2. asked by Michelle
3. 1,059 views
The perimeter of a rectangular red sticker is 30 millimeters. The sticker is 4 millimeters tall. How wide is it?
1. 3 answers
2. asked by Serena Fan
3. 1,054 views
yoyoma here just wondering if someone can help me out with this essay...what grade do u think it deserves? constructive
1. 1 answer
2. asked by yoyoma
3. 1,040 views
I need help on solving this problemA plane with an air speed of 400km/hr wants to go north but a wind of 70 km/hr is blowing
1. 1 answer
2. asked by Angelina
3. 1,039 views
Can you determine the molecular formula of a substance from its percent composition?
1. 1 answer
2. asked by melek
3. 1,034 views
love at first sight the ball romeo sees her first. their first words are a shared sonnet analyse the reason for this. analyse
1. 21 answers
2. asked by Jane
3. 1,033 views
i not get this question which be author come back to his Orpheus allusions with question referrring to jakes dad, "what songs
1. 2 answers
2. asked by Mohammad
3. 1,030 views
Calculate the grams of K2CO3 required to prepare 546.0 mL of a 0.789 g/L K+ solution.
1. 1 answer
2. asked by donald
3. 1,030 views
What mass of potassium chloride, a salt substitute often used by heart patients, can be produced directly from 5.2 g potassium
1. 1 answer
2. asked by krystal
3. 1,027 views
A 40.7kg wagon is towed up a hill inclined at 18.1 degrees with respect to the horizontal. The tow rope is parallel to the
1. 0 answers
2. asked by Ethan
3. 1,026 views
A 42kg person on a merry-go-round is traveling in a circle with a radius of 2m at a speed of 5 m/s. It asked for the
1. 0 answers
2. asked by Michelle
3. 1,020 views
a ship leaves sydney heads and travels 45 km due east. it then returns and travels 86 km due north. how far is it from its
1. 2 answers
2. asked by jake
3. 1,020 views
On standard IQ tests, the mean is 110 and the standard deviation is 15. The results are very close to fitting a normal curve.
1. 2 answers
2. asked by Anonymous
3. 1,012 views
what is equivalent fraction of 9/10 and 7/12
1. 2 answers
2. asked by sarah
3. 1,001 views
Find an equation of the line that is tangent to the graph of f and parallel to the given line.Function Line f(x) = 2x^2 6x – y
1. 3 answers
2. asked by Anonymous
3. 997 views
jake say that aftr today he have to start making some phone calls or have phone removed. what he mean?that mean that he have to
1. 2 answers
2. asked by Mohammad
3. 974 views
Here is a presentation entitled "treatment plant from arsenic and pathogenic bacteria". I don't know how to check it as I'm not
1. 1 answer
2. asked by Henry2
3. 971 views
Interviewa) Interview a teacher in the elementary grades regarding the teacher's social studies instruction. Include at least
1. 3 answers
2. asked by lovablegirl
3. 970 views
Can someone please explain how to do this problem: 7n-5=10n+13
1. 2 answers
2. asked by Heaven
3. 970 views
The drawing shows two fully charged capacitors (C1 = 7 µF, q1 = 4 µC; C2 = 16 µF, q2 = 4 µC). The switch is closed, and
1. 3 answers
2. asked by Laura
3. 969 views
a motorbike has a mass of 300kg, and is being ridden along a straight road. The rider sees a traffic queue ahead. He applies the
1. 1 answer
2. asked by Eli
3. 965 views
13. The global workplace refers toA. handling the process of sending international mail. B. understanding the development of
1. 4 answers
2. asked by Brenna
3. 959 views
United States citizens living in Switzerland must pay taxes on their income to both the United States and to Switzerland.
1. 0 answers
2. asked by danny
3. 934 views
WHAT IS ACCEPT:EXCEPT::THREW I REALLY NEED HELP DO TOMORROW FREAKIN OUT
1. 1 answer
2. asked by TREINEE
3. 910 views
Consider the following reaction.4Fe + 3O2=2Fe2O3 a. How many moles of O2 are required to react completely with 29.8 mg of Fe?
1. 1 answer
2. asked by krystal
3. 906 views

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