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2011
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Questions Asked on April 6, 2011

What mass of hydrochloric acid (in grams) can be neutralized by 2.3g of sodium bicarbonate? (: Begin by writing a balanced
1. 1 answer
2. asked by stephen
3. 7,992 views
A bank teller has a total of 124 bills in fives and tens. The total value of the money is $840. How many of each kind does he
1. 1 answer
2. asked by jeniffer
3. 4,106 views
In the reaction N2 + 3H2 -> 2NH3, how many grams of NH3 gas would be formed when H2 gas, having a volume of 11.2 liters at STP,
1. 4 answers
2. asked by David
3. 3,863 views
Write the equation for the dissolution of (NH4)2S04 in water. How many moles of each type of ion, and how many total moles of
1. 2 answers
2. asked by Kelly
3. 3,783 views
n object is dropped from rest from a height5.8 × 106 m above the surface of the earth. If there is no air resistance, what is
1. 2 answers
2. asked by donna
3. 3,630 views
Find the formula for a function of the form y=Asin(Bx)+C with a maximum at (0.5,0), a minimum at (1.5,−4), and no critical
1. 1 answer
2. asked by Karku
3. 3,068 views
2) Two objects, A and B, initially at rest, are "exploded" apart by the release of a coiled spring that was compressed between
1. 4 answers
2. asked by arun
3. 3,053 views
solve this linear programming problem;A chain saw requires 4 hours of assembly and a wood chipper 6 hours. A maximum of 48 hours
1. 3 answers
2. asked by ash
3. 3,024 views
A Hall-effect probe operates with a 120 -mA current. When the probe is placed in a uniform magnetic field of magnitude 0.0840 T,
1. 7 answers
2. asked by Rachel
3. 2,913 views
Calculate the mass of H2O produced by the decomposition of 2.21g of CuCO3 x Cu (OH)2. What happend to this water?This question
1. 2 answers
2. asked by Vanessa
3. 2,740 views
A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m. A constant frictional force,
1. 1 answer
2. asked by Mesho
3. 2,634 views
A 4 kg block resting on a frictionless horizontal ledge is attached to a string that passes over a pulley and is attached to a
1. 1 answer
2. asked by Kayla
3. 2,542 views
A rumor spreads through a population in such a way that "t" hours after the rumor starts, the percent of people involved in
1. 1 answer
2. asked by Anonymous
3. 2,406 views
You are a travel agent and wish to estimate, with 98% confidence, the proportion of vacationers who use an online service or the
1. 1 answer
2. asked by alex
3. 2,212 views
How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.90g of Fe2O3 with enough carbon monoxide to produce
1. 1 answer
2. asked by Chris
3. 2,141 views
The system shown below is released from rest. The mb = 35 kg block is 2 m above the ledge. The pulley is a uniform disk with a
1. 1 answer
2. asked by Kayla
3. 2,044 views
Two similar polygons have areas of 16 square inches and 64 square inches. The ratio of a pair of corresponding sides is 1/4.True
1. 2 answers
2. asked by danny
3. 2,029 views
How many joules of heat are needed to heat 25.0 g of ice at -5.0 degrees celcius to a final temperature of 40.0 degrees celcius?
1. 1 answer
2. asked by Thao
3. 1,901 views
An accelerating voltage of 2.46 * 10^3 V is applied to an electron gun, producing a beam of electrons originally traveling
1. 3 answers
2. asked by Rachel
3. 1,801 views
a factory produces 6 motorcycles in 9 hours write a proportion and solve it to find how many hours it takes to produce 16
1. 3 answers
2. asked by veronica
3. 1,739 views
I have a question which asks...What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get
1. 2 answers
2. asked by Jess
3. 1,698 views
What is the fundamental frequency, the first three overtones of an organ pipe that is 100cm in length ans is closed on one end
1. 2 answers
2. asked by Lindsey
3. 1,654 views
1)How much work is done by a person lifting a 2 kg object from the bottom of a well at a constant speed of 2m/s for 5 s. Is the
1. 3 answers
2. asked by Fiona
3. 1,646 views
A chemist wants to extract the gold from 15.0g of gold(II) chloride dihydrate, AuCl3 â€¢ 2H20, What mass of gold could be
1. 1 answer
2. asked by Anonymous
3. 1,623 views
1) A region is bounded by the line y = x and the parabola y = x2 - 6x + 10. What is the volume of the solid generated by
1. 1 answer
2. asked by arun
3. 1,558 views
An octahedral die has eight faces numbered 1 to 8, each of which comes up with equal likelihood (you can see a picture of one in
1. 1 answer
2. asked by nathon
3. 1,497 views
A 53 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 13 m, and falls a total of
1. 3 answers
2. asked by Cara
3. 1,490 views
Find the absolute maximum and absolute minimum values of the functionf(x)=(x−2)(x−5)^3+11 on each of the indicated
1. 1 answer
2. asked by Cady
3. 1,392 views
At what separation is the electrostatic force between a +11.5 \mu C point charge and a +29.2 \mu C point charge equal in
1. 1 answer
2. asked by Lola
3. 1,383 views
A spring with 53 hangs vertically next to a ruler. The end of the spring is next to the 21- mark on the ruler. If a 3.0- mass is
1. 0 answers
2. asked by Cara
3. 1,370 views
In a decomposition reaction 2KCLO3 -> 2KCL + 3O2, what volume of O2 gas at STP would be produced from 3.66g of KCLO3Thank You
1. 2 answers
2. asked by David
3. 1,361 views
Calculate the frequency in hertz, wavelength in nm, and the velocity in m/s of light inside a material with a refractive index
1. 0 answers
2. asked by noel
3. 1,340 views
pseudocode for a program that is required to compute the costs of a car trip. The required input values are: Litres per 100km,
1. 2 answers
2. asked by sipho
3. 1,331 views
You are ﬁ ve feet tall and cast a seven-footeight-inch shadow. At the same time, a basketball hoop casts a 19-foot shadow. How
1. 1 answer
2. asked by Leila
3. 1,309 views
The Volumes of two similar figures are given. The surface area of the smaller figure is given. Find the surface area of the
1. 3 answers
2. asked by Mr. Moo
3. 1,306 views
An investor had a total of 25,000 put into a portfolio of stocks, bonds, and mutual funds. In one year, he earned 8% on the
1. 2 answers
2. asked by Maka
3. 1,291 views
Rewrite each statement two ways using object pronouns.Tengo que leer los libros en una semana.
1. 1 answer
2. asked by Nick
3. 1,288 views
What volume does a mixture of 14.2 g of He and 21.6 g of H2 occupy at 28 degrees celcius and 0.985 atm?
1. 1 answer
2. asked by Joe Schmo
3. 1,260 views
Part AEach blade on a wind turbine is engineered to produce an effective force through its center of mass that is perpendicular
1. 0 answers
2. asked by gary
3. 1,242 views
Triangle XYZ is dilated by a factor 1/2. What is the ratio of the area of triangle XYZ to the area of it's image, triangle
1. 3 answers
2. asked by Airelle
3. 1,230 views
Three gases, xenon, helium, and hydrogen are confined in a 10.0 L vessel at a pressure of 7.0 atm. Intially the vessel contains
1. 1 answer
2. asked by Paxton
3. 1,218 views
A pentagon is a geometric figure with 5 sides. The lengths of the sides of a given pentagon are (6x + 2) cm, (3x + 2) cm, (2x)
1. 2 answers
2. asked by Anonymous
3. 1,217 views
What is the function rule when the input is 0,1.2.3 and the output is 5,4,3,2?
1. 1 answer
2. asked by Colleen
3. 1,206 views
How many grams of Mg are needed to react completely with 3.80 L of a 2.50 M HF solution?Mg + 2HF --> MgF^2 + H^2
1. 1 answer
2. asked by Lexa
3. 1,192 views
From a standard deck of 52 cards, all of the clubs and the jack of diamonds are removed. Two cards are drawn at random from the
1. 0 answers
2. asked by nathon
3. 1,182 views
Calculate the pH of each of the following solutions.(a) [H3O+] = 2.9 10-10 M- I got 9.5 but its wrong. I used the equation pH=
1. 3 answers
2. asked by Beth
3. 1,181 views
How does pressure work as a restoring force to create a sound wave?
1. 1 answer
2. asked by John
3. 1,179 views
Consider the pea data: # peas in pod 2,3,4,5,6 and frequency 7, 9, 5, 3, 1: a. find the mean, median, mode and midrange number
1. 2 answers
2. asked by ophelia
3. 1,170 views
Ngata Corp. issued 12-year bonds 2 years ago at a coupon rate of 8.4 percent. The bonds make semiannual payments. If these bonds
1. 1 answer
2. asked by Anonymous
3. 1,154 views
Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of
1. 0 answers
2. asked by Claudia
3. 1,122 views
A novice skier, starting from rest, slides down a frictionless 24.0 incline whose vertical height is 215. How fast is she going
1. 1 answer
2. asked by Cara
3. 1,119 views
Determine the grams of NaOH that could be absorbed by the SO3/HSO3 buffer before the base absorbing capacity of this buffer were
1. 1 answer
2. asked by Anonymous
3. 1,118 views
in classifying a sentences u underline the _______ parts once and the ________ parts twice? can someone please help my daughter
1. 1 answer
2. asked by Makayla
3. 1,091 views
You have an inclined plane. It is 2m long and 1m high. A cylinder of mass 300 grams and 3cm radius isinitially at rest at the
1. 0 answers
2. asked by Lakeshia
3. 1,081 views
Need to correct the verb if not correct and if correct just leave. Thanks for looking at this for me...1. King Arthur LEARNED
1. 3 answers
2. asked by Emily
3. 1,074 views
what is art online? ( online art galeries, virtual art, nowadays art or something different?)
1. 3 answers
2. asked by Peter
3. 1,065 views
A 2.52 mg sample of the compound didemnin â€“ C was analyzed and found to have the following compositions: 1.55 mg C, 0.204
1. 1 answer
2. asked by Anonymous
3. 1,057 views
I wrote "Bien que Rousseau etait apparemement..." And my teacher underlined bien que and drew an arrow to etait...what could he
1. 1 answer
2. asked by Brooke
3. 1,041 views
a room is 18 ft long, 14 ft wide, and 8 ft high, then how would i find the cost of carpeting the floor with carpet costing
1. 1 answer
2. asked by Morgan
3. 1,038 views
the net monthly profit in dollars, from the sale of a certain item is given by formula p(x)=10^6[1+(x-1)e^-0.001x], where x is a
1. 1 answer
2. asked by Anonymous
3. 1,038 views
Find the area of a pentagon ABCDE with verticles A(0,4),B(3,2),C(3,-1), D(-3,-1) and E (-3,2)
1. 1 answer
2. asked by PAT
3. 1,019 views
Please answer the following questions about the functionf(x)=e^(-0.5x^2) Instructions: If you are asked to find x- or y-values,
1. 1 answer
2. asked by Catherine
3. 1,007 views
the mass of cobalt-60 in a sample is found to have decreased from 0.800g to 0.200g in a period of 10.5 years. from this info
1. 1 answer
2. asked by shaleena
3. 991 views
Can you please check the following sentences, please. It's really urgent.1) Following what Joyce had already done in England and
1. 1 answer
2. asked by Mike
3. 991 views
Many useful tools are made from metal.
1. 7 answers
2. asked by lauren
3. 980 views
A 110-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 420 N. For the first 13 m the
1. 1 answer
2. asked by Cara
3. 967 views
the mass of cobalt-60 in a sample is found to have decreased from 0.800g to 0.200g in a period of 10.5 years. from this info
1. 1 answer
2. asked by shaleena
3. 942 views
A 280-g wood block is firmly attached to a very light horizontal spring, as shown in the figure. The block can slide along a
1. 2 answers
2. asked by Cara
3. 934 views
A 1.3-kg 10-cm-diameter solid sphere is rotating about its diameter at 77 rev/min.(a) What is its kinetic energy? (b) If an
1. 1 answer
2. asked by Kayla
3. 933 views
Assuming that temperature remains constant, calculate the final volumePressure of a sample of 45 L of gas is increased and the
1. 2 answers
2. asked by Jill
3. 931 views
A 2kg ball,A moves to the right with velocity 4 m/s collides with another 1kg ball,B moving in the opposite way with velocity
1. 3 answers
2. asked by alya
3. 927 views
A tennis ball of 60g is dropped from a height of 2.0m,It rebounds but loses 25% of its kintic energy as thermal energy.Ignoring
1. 2 answers
2. asked by Physics,help.
3. 897 views
to formulate a general definition of emotion it will be most accurate to say that a.)emotions are feelings that have both
1. 1 answer
2. asked by alisha s
3. 883 views
Sulfur burns in oxygen in two steps:i.S(s) + O2(g) ->SO2(g) change of Heat=-297kJ ii. 2SO2(g) + O2(g)->2SO3(g) change of
1. 1 answer
2. asked by Erika
3. 881 views
A chemist wants to extract the gold from 15.0g of gold(II) chloride dihydrate, AuCl3 x 2H20, What mass of gold could be obtained
1. 1 answer
2. asked by Anonymous
3. 881 views
In calibrating a thermometer by setting only the freezing and boiling points, what assumptions are you making regarding the
1. 1 answer
2. asked by Tina
3. 881 views
what are ways to sort the words scene, muscle, cereal, and recital?
1. 11 answers
2. asked by nicole
3. 873 views
1) A 1.0 kg mass is attached to the end of a vertical ideal spring with a force constant of 400 N/m. The mass is set in simple
1. 0 answers
2. asked by arun
3. 865 views
Why lighter skins people thought that they are superior to all others.?
1. 2 answers
2. asked by ami
3. 855 views
A 280-g wood block is firmly attached to a very light horizontal spring, as shown in the figure. The block can slide along a
1. 0 answers
2. asked by Cara
3. 854 views
I have a question which asks...What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get
1. 1 answer
2. asked by Jess
3. 853 views
Find the absolute maximum and absolute minimum values of the functionf(x)=(x−2)(x−5)^3+11 on each of the indicated
1. 0 answers
2. asked by Cady
3. 853 views
Hi,I appreciate your expert help,and I have a question for you. If I'm asked to decribe resting potential, action poential, and
1. 0 answers
2. asked by Cliff
3. 849 views
How long will it take a 480 N motor to lift a 335 kg piano to a sixth-story window 15.0 m above?
1. 4 answers
2. asked by Cara
3. 844 views
Which one of the following statements best illustrates implicit memory
1. 1 answer
2. asked by jabrenne carter
3. 844 views
You are a sociologist who uses the conflict perspective to study various aspects of our society. How do you think you would
1. 3 answers
2. asked by Sharon
3. 815 views
Calculate the molarity of a solution prepared by dissolving 25.0 g NaCl in 1.0 L solution.
1. 1 answer
2. asked by Marilyn
3. 799 views
10. A random sample of n=36 scores is selected from a normal distribution with a mean of u=60. After a treatment is administered
1. 1 answer
2. asked by Anonymous
3. 795 views
in which country was nationalism the biggest threat?
1. 1 answer
2. asked by bilal
3. 795 views
which statement about anorexia nervosa is ture? a.) sufferers are usually males between the age of 12 and 40. b.) people with
1. 3 answers
2. asked by alisha s
3. 792 views
Name some Australian Icons, excluding animals.I am SOOOOOOOO stuck on this! All I can think of are Koala's and Kangaroos...
1. 1 answer
2. asked by Rissa
3. 773 views
Triaglyceride with three F.A.chains of 20 carbonhow to calculate the ATP production Plz show the steps thank you
1. 0 answers
2. asked by Tarkan
3. 763 views
Question 1A school psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours.
1. 1 answer
2. asked by need help
3. 759 views
Select the answer that contains the correct punctuation for the following sentence.A diamond is the hardest natural substance it
1. 3 answers
2. asked by anthony
3. 759 views
The angular speed of a large pulley wheel that has a radius of 15, is 50 revolutions/min. Find the angular speed and the rim
1. 2 answers
2. asked by Jessica
3. 753 views
How many ways can a teacher arrange 10 students in a front row if there are 60 studentsI think I do 60!/50! = 2.74 *10^17 How
1. 3 answers
2. asked by Katie L.
3. 752 views
Select the answer that contains the correct punctuation for the following sentence.Presidents wives have always played important
1. 6 answers
2. asked by anthony
3. 740 views
Which element of a short story would be most important to a story about a mad scientist stealing a secret weapon?
1. 1 answer
2. asked by jess
3. 739 views
Write the logarithm of a single quantity: 2ln(x)+ln(4)-(1/2)ln(9)
1. 1 answer
2. asked by Zoe
3. 735 views
If a gas tap is turned on for a few seconds, someone a couple of meters away will hear the gas escaping long before he or she
1. 0 answers
2. asked by Nikki
3. 730 views

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