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Questions Asked on March 16, 2010

What is the colour of:1. Cu+ 2. Cu2+ 3. Cu3+?
1. 3 answers
2. asked by Alan
3. 7,745 views
An ice cube is placed in a microwave oven. Suppose the oven delivers 105 W of power to the ice cube and that it takes 32,200 J
1. 3 answers
2. asked by John
3. 6,119 views
A room has a volume of 120 m^3. An air-conditioning system is used to replace the air in the room every twenty minutes, using
1. 1 answer
2. asked by ALan
3. 5,197 views
What is the value of the y-coordinate of the solution to the system of equations x + 2y = 9 and x - y = 3?
1. 3 answers
2. asked by billy
3. 4,947 views
At 2200 degrees celsius,kp=0.050 for the reaction: n2(g)+O2(g) ->2NO(g)<- What is the partial pressure of NO in equilibrium with
1. 3 answers
2. asked by Anonymous
3. 4,375 views
Write an equation to describe the variation. Use k for the constant of proportionality.x varies directly as the square of y and
1. 2 answers
2. asked by Anonymous
3. 4,172 views
How do I write the skeleton equation representing the heating o f magnesium carbonate to produce solid magnesium oxide and
1. 1 answer
2. asked by Brittany
3. 3,427 views
Calculate how many milliliters of carbon dioxide would be produced theoretically from 2.0g of sucrose at 25 deg Cel and 1 atm
1. 7 answers
2. asked by Destiny
3. 2,442 views
Find the probability that a randomly thrown dart will land in the shaded area of the dartboard. A square that is 6ft width by
1. 1 answer
2. asked by Addy
3. 2,410 views
For the following mixture, determine the initial concentration of Fe^3+.0.00250M Fe^3+ --- 8.00mL 0.00250M SCN^- --- 7.50mL
1. 1 answer
2. asked by L**
3. 2,359 views
How did Islamic civilization spread to encompass such an extensive empire(in the Middle East)? What practices or methods were
1. 2 answers
2. asked by Troy
3. 2,333 views
If you are wearing a watch, what energy changes are taking place in it right now?
1. 10 answers
2. asked by AJ
3. 2,168 views
Which of the following molecules is polar?1. CH4 2. BH3 3. NH3 4. CF4 5. H2
1. 1 answer
2. asked by demi
3. 2,114 views
The figure below represents the bulls eye target for an archer. The black dots represent where the archer’s arrows hit:How can
1. 3 answers
2. asked by khin
3. 2,055 views
It takes Tammy 45 minutes to ride her bike 5 miles. At this rate, how long will it take her to ride 8 miles?
1. 2 answers
2. asked by emma
3. 2,048 views
Classify each reaction and balance the equations.Al(OH)3 ==> Al2O3 + H2O
1. 1 answer
2. asked by Jack
3. 1,959 views
A small, nonconducting ball of mass m=1.0mg and charge q=2.0*10^-8 C (distributed uniformly through it's volume) hangs from an
1. 2 answers
2. asked by Matt
3. 1,957 views
Which test for iron(II) ions is conclusive?
1. 1 answer
2. asked by Dan
3. 1,829 views
If y varies inversely as x,find the inverse variation equation for the situation y=65 when x=9
1. 1 answer
2. asked by Kari
3. 1,784 views
Two households, both alike in dignity. what is the prologue's first prepositional phrase?
1. 3 answers
2. asked by Cesar
3. 1,726 views
Find the equation of the line through the point (3,4) which cuts from the first quadrant a triangle of minimum area.
1. 4 answers
2. asked by Santha
3. 1,577 views
The pH of 0.50 M HBrO(aq) is 4.50. Calculate the change in pH when 6.50 g of sodium hypobromite is added to 110. mL of the
1. 5 answers
2. asked by Trixie
3. 1,486 views
Which has the lower unit price? Soap.brand A:$1.34 for 3 bars. brand B:$1.44 for 4 bars. i think it is b.
1. 1 answer
2. asked by candance
3. 1,397 views
A man earned $ 3000 the first year he worked. If he received a raise of $ 400 at the end of each year,what was his salary during
1. 3 answers
2. asked by Lisa
3. 1,359 views
How do I write a paragraph naming three possible agendas and one example of each that you might find in the media?
1. 1 answer
2. asked by Betty
3. 1,348 views
7) If a number is divisible by 3, then the sum of the digits of that number is divisible by 3.The sum of the digits of a number
1. 0 answers
2. asked by Lisa
3. 1,342 views
On each of four consecutive plays in a football game,a team lost 11 yd. If lost yardage is interpreted as a negative integer,
1. 2 answers
2. asked by kirk
3. 1,321 views
A 24V battery of internal resistance of 10ohms is connected to a variable resistor. At what value of current drawn from battery
1. 2 answers
2. asked by Edwin
3. 1,254 views
1x10-2 mol of MgSO4 (Ksp = 9) is added to 1 L of water. Will 1x10-5 mol of CaSO4 (Ksp = 10-6) completely dissolve in the
1. 1 answer
2. asked by Trixie
3. 1,211 views
'We are currently in an energy crisis. After food, fossil fuels are humanity's most important source of energy. These resources
1. 1 answer
2. asked by mysterychicken
3. 1,197 views
Write one numerical expression and one algebraic expression. Then explain what the differnce between a numerical and algebraic
1. 2 answers
2. asked by Cameron
3. 1,171 views
Suppose that a 2.50x10^-6M solution of red dye No. 2 had an absorbance of 0.585 at its wavelength of maximum absorbance. A
1. 1 answer
2. asked by L**
3. 1,166 views
What is something that I can compare an animal or plant cell to? I need to draw something that works similarly to a cell. For
1. 1 answer
2. asked by Mike
3. 1,160 views
The formula b=26a is used in New England to estimate the minimum furnace output, b, in BTU's, for a modern house with a square
1. 1 answer
2. asked by Anonymous
3. 1,131 views
grams of sodium chloride dissolved in 100mL of water at 20 degrees celcius
1. 2 answers
2. asked by ace2
3. 1,126 views
Find the number of subsets of the given set.4) {mom, dad, son, daughter} a. 16 b.14 c.12 d. 8
1. 3 answers
2. asked by Lisa
3. 1,108 views
How would each of the folowing affect the accuracy of the calculated neutralizing power of the antacid (too high, too low, no
1. 2 answers
2. asked by Anonymous
3. 1,095 views
Erin takes a total of 5 hours in her boat to travel a distance upriver and return downriver the same distance. If the time
1. 2 answers
2. asked by Lauren
3. 1,093 views
an aluminum object has a mass of 27 kg & a density of 2700 kg/m^3. it is hung from a rope under the surface of water
1. 1 answer
2. asked by john
3. 1,090 views
Determine the molarity of FD&C Yellow #5 in the following solution that's prepared by mixing the dye solution with water and
1. 1 answer
2. asked by L**
3. 1,090 views
Question:The table below shows the drinking habits of adult men and women. Men Women Total Non-Drinker 387 421 808 Occasional
1. 2 answers
2. asked by Looking for someone to check my answer
3. 1,089 views
The electrical motor runs on a D.C source of emf E and internal resistance r. Show that power output of the motor is max where
1. 0 answers
2. asked by Edwin
3. 1,060 views
How does the Diethylacetal impurity arise in fermentation?
1. 0 answers
2. asked by Destiny
3. 1,057 views
Could someone please have a few moments to go through my other previous posts on Exploring Space, thanks. I need them to be
1. 2 answers
2. asked by Sara
3. 1,018 views
A stubborn, 120 {\rm kg} mule sits down and refuses to move. To drag the mule to the barn, the exasperated farmer ties a rope
1. 2 answers
2. asked by norm
3. 1,016 views
im doing this project on boron and one fact says that if we didn't have boron we would die, but why is that? .. plz gimme
1. 2 answers
2. asked by Anna
3. 1,001 views
i have streets but nopavemeti have cities but no bulidings i have rivers yet no water what am i
1. 1 answer
2. asked by emma
3. 997 views
Give three examples of asymmetric information in which the health consumer has information that is unavailable to the health
1. 1 answer
2. asked by Elizabeth
3. 995 views
what is the density of vinegar?thanks
1. 1 answer
2. asked by urgent
3. 975 views
before beginning a titration, the burnet was not clean. after completing the titration,the student noticed that droplets of the
1. 1 answer
2. asked by Anonymous
3. 962 views
Research PaperI need to write a research paper on coral reefs. i need to compose a research paper that deals with coral reefs
1. 2 answers
2. asked by y912f
3. 956 views
a 100 kg boulder is placed under the surface of water. its volume is 0.5 x 10^5 cm^3. what is the weight of the rock while under
1. 1 answer
2. asked by john
3. 955 views
Which has been a major change resulting from the industrialization of Western Europe? 1.increased social mobility 2.increased
1. 1 answer
2. asked by mary
3. 886 views
The SI temperature unit is Celsius?A kelvin is the same temperature interval as a degree______? A temperature difference taken
1. 1 answer
2. asked by Ana
3. 863 views
Two 72.0-kg hockey players skating at 7.00 m/s collide and stick together. If the angle between their initial directions was 130
1. 1 answer
2. asked by Kyle
3. 862 views
In the market for health insurance, what kind of asymmetric information causes adverse selection? Explain.
1. 1 answer
2. asked by Elizabeth
3. 852 views
what are the fallacies in 5. Letter to the editor: “I strongly object to the proposed sale of alcoholicbeverages at County
1. 2 answers
2. asked by suzie
3. 840 views
I fyou start with 2 and count by 4s until youreach the number 202, you will have the following number sequence. 2, 6, 10,
1. 2 answers
2. asked by trinity
3. 834 views
Basic Concepts of Probability and Counting1. License plates are made using 3 letters followed by 2 digits. How many different
1. 3 answers
2. asked by Looking for someone to check my answer
3. 834 views
Two sides of a triangle measure 2x – 4 and 7x – 2 units, respectively. Which of these is a possible length for the third
1. 3 answers
2. asked by MARY
3. 829 views
What is the boiling point of the water in your radiator if 2.00kg of antifreeze (ethylene glycol, C2H6O2) is added to 9.00x10^3
1. 1 answer
2. asked by Katelynn
3. 829 views
You are holding a shopping basket at the grocery store with two 0.69-kg cartons of cereal at the left end of the basket. The
1. 1 answer
2. asked by Kyle
3. 827 views
'We are currently in an energy crisis. After food, fossil fuels are humanity's most important source of energy. These resources
1. 15 answers
2. asked by mysterychicken
3. 825 views
A cottage under construction is to be 15.6m wide. The two sides of the roof are to be supported by equal rafters that meet at a
1. 0 answers
2. asked by deborah
3. 823 views
1)tan Q = -3/4 Find cosQ-3^2 + 4^2 = x^2 9+16 = sqrt 25 = 5 cos = ad/hy = -4/5 Am I correct? 2) Use the sum and difference
1. 1 answer
2. asked by Abbey
3. 820 views
During a rescue operation, a 5600-kg helicopter hovers above a fixed point. The helicopter blades send air downward with a speed
1. 1 answer
2. asked by Kyle
3. 809 views
While traveling in a car, the centrifugal force a passenger experiences as the car drives in a circle varies jointly as the mass
1. 0 answers
2. asked by Anonymous
3. 805 views
if logx y=2, whic of the following is true?
1. 2 answers
2. asked by ray
3. 800 views
What is the boiling point of the water in your radiator if 2.00kg of antifreeze (ethylene glycol, C2H6O2) is added to 9.00x10^3
1. 1 answer
2. asked by Katelynn
3. 785 views
Determine the moles of ammonia in the following cobalt ammine complex: A sample of .1500 g of the cobalt ammine complex is
1. 2 answers
2. asked by james
3. 778 views
What are the probably products of...a) an aqueous solution of two ionic compounds b) a single compound c) two elements d) oxygen
1. 0 answers
2. asked by Bob
3. 775 views
whare are the scale and interval in a frequency table? I don't understand what they mean. On my table there's a weight, how many
1. 1 answer
2. asked by Julie
3. 773 views
a worker cleans a railroad car with steam of 15000ft^3 car on inside, t=240F P=14.7psia of steam. the car is closed. the steam
1. 1 answer
2. asked by spencer
3. 755 views
Develop an algorithm or write a pseudo-code that accepts as input the names of an unspecified number of students who each have
1. 0 answers
2. asked by Anonymous
3. 746 views
21) ______________ is the process of naming broad product-markets and then segmenting these broad product-markets in order to
1. 0 answers
2. asked by Christa Cullin
3. 743 views
What is the boiling point of the water in your radiator if 2.00kg of antifreeze (ethylene glycol, C2H6O2) is added to 9.00x10^3
1. 1 answer
2. asked by Katelynn
3. 735 views
What is the boiling point of the water in your radiator if 2.00kg of antifreeze (ethylene glycol, C2H6O2) is added to 9.00x10^3
1. 1 answer
2. asked by Katelynn
3. 732 views
why was it possible to separate the product from sodium hydroxide using acetone?
1. 1 answer
2. asked by Jenny
3. 727 views
I want to stay that a women is a handsome women but I cannot think of another word for handsome.I do not want to put pretty etc.
1. 1 answer
2. asked by janae
3. 727 views
A delicatessen serves 13 kinds of sandwiches and 5 kinds of chips. How many different sandwichand chip lunches can they make if
1. 7 answers
2. asked by Lisa
3. 725 views
The largest bubble chamber in the world is 15 ft indiameter and contains 7259 gal of liquid hydrogen at a temperature of
1. 2 answers
2. asked by kirk
3. 722 views
I'm not asking for the answer (I hate when people do that) I'd just like to know how to go about this so that I may understand.
1. 1 answer
2. asked by Kayte
3. 720 views
Suppose you’re thinking about buying a used car, but you’ve become worried about the selection problems. In this market, the
1. 0 answers
2. asked by Amal
3. 716 views
The greatest recorded temperature ranges in the worldare around the “cold pole” in Siberia. Temperatures in Verkhoyansk have
1. 1 answer
2. asked by kirk
3. 704 views
1. Temperature cools about 6.5 degrees Celsius per kilometer of _______.2. ___________ from 10 km to 50 km about Earth, this
1. 0 answers
2. asked by Terri
3. 702 views
a plastic cube has 6 different faces. each face is painted either orange, yellow or green. the cube is rolled 36 times, and the
1. 1 answer
2. asked by Terri
3. 697 views
Progressivism was the first national reform movement that set out to resolve social problems without the aim of overturning the
1. 0 answers
2. asked by Anonymous
3. 684 views
Assuming that each system behaves ideally, which solution (.25m KCl or .25m C3H8O3) would have the lower freezing point?
1. 1 answer
2. asked by Katelynn
3. 681 views
Simplify the complex fractionm^-1+z^-1/m^-1-z^-1
1. 1 answer
2. asked by Anonymous
3. 676 views
For the answer to the following post, do you mean that the frequency does not depend on the radius?Posted by Johnny on Saturday,
1. 2 answers
2. asked by Sandra
3. 674 views
how were the truman doctrine and the marshall plan relevatn to the american foreign policy goal of containment?
1. 1 answer
2. asked by Cassie
3. 673 views
Smokey the Bear celebrated his 65th birthday this year. Why has the message of the forest service that “only you can prevent
1. 2 answers
2. asked by Natalie
3. 672 views
Janessa bought 4 stamps for $1.84. At this,rate how much would 10 stamps cost?
1. 2 answers
2. asked by Ray'Janay
3. 666 views
What are intermediate sanctions , their purpose in the criminal justice process, and their function as a sentencing alternative?
1. 1 answer
2. asked by Anonymous
3. 652 views
Question:The table below shows the drinking habits of adult men and women. Men Women Total Non-Drinker 387 421 808 Occasional
1. 1 answer
2. asked by Looking for someone to check my answer
3. 652 views
1. Cut out all the pieces.(Does 'out' mean 'completely' here?) 2. Shine a light on the back of the stage. 3. Shine a light at
1. 1 answer
2. asked by rfvv
3. 652 views
1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your
1. 1 answer
2. asked by sally
3. 648 views
What are the number in the magic square of 4 by 4 if the magic number is 38?
1. 1 answer
2. asked by JJ
3. 648 views
one more question:a worker cleans a railroad car with steam of 15000ft^3 car on inside, t=240F P=14.7psia of steam. the car is
1. 0 answers
2. asked by spencer
3. 645 views
i need to find the amount of gallons of different water heights on a Horizontal tank with Elliptical Cross-Sectionsminor axis
1. 1 answer
2. asked by Kyle
3. 639 views

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