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2011
April

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. 8,027 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. 4,134 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. 3,914 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. 3,822 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. 3,670 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. 3,093 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. 3,087 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. 3,058 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. 2,947 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. 2,760 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. 2,647 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. 2,586 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. 2,443 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. 2,241 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. 2,171 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. 2,070 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. 2,055 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. 1,930 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. 1,825 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. 1,763 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. 1,751 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. 1,680 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. 1,674 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. 1,651 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. 1,587 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. 1,519 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. 1,519 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. 1,448 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. 1,406 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. 1,391 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. 1,390 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. 1,362 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. 1,356 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. 1,341 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. 1,334 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. 1,317 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. 1,301 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. 1,286 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. 1,269 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. 1,254 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. 1,252 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. 1,245 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. 1,244 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. 1,213 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. 1,212 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. 1,197 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. 1,192 views
How does pressure work as a restoring force to create a sound wave?
1. 1 answer
2. asked by John
3. 1,189 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. 1,181 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. 1,154 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. 1,143 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. 1,137 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. 1,109 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. 1,108 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. 1,104 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. 1,098 views
what is art online? ( online art galeries, virtual art, nowadays art or something different?)
1. 3 answers
2. asked by Peter
3. 1,076 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. 1,070 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. 1,065 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. 1,062 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. 1,057 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. 1,035 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. 1,021 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. 1,017 views
Many useful tools are made from metal.
1. 7 answers
2. asked by lauren
3. 996 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. 987 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. 967 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. 966 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. 960 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. 959 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. 955 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. 930 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. 911 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. 906 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. 903 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. 901 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. 899 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. 894 views
what are ways to sort the words scene, muscle, cereal, and recital?
1. 11 answers
2. asked by nicole
3. 889 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. 884 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. 881 views
Why lighter skins people thought that they are superior to all others.?
1. 2 answers
2. asked by ami
3. 873 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. 870 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. 866 views
Which one of the following statements best illustrates implicit memory
1. 1 answer
2. asked by jabrenne carter
3. 862 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. 843 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. 831 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. 821 views
in which country was nationalism the biggest threat?
1. 1 answer
2. asked by bilal
3. 810 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. 808 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. 791 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. 786 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. 785 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. 782 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. 782 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. 775 views
Write the logarithm of a single quantity: 2ln(x)+ln(4)-(1/2)ln(9)
1. 1 answer
2. asked by Zoe
3. 773 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. 767 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. 765 views
How many liters of 12.3 molar NaOH stock solution will be needed to make 12.4 liters of a 1.2 molar NaOH solution? Show the work
1. 2 answers
2. asked by jose
3. 751 views

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