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Questions Asked on October 19, 2010

How many carbon atoms are contained in 2.8g of C2H4?
1. 3 answers
2. asked by Quincy
3. 6,404 views
Given f(x)=2x^2-1, determine the equation of the inverse.
1. 2 answers
2. asked by Emily
3. 5,030 views
A 120 N child is in a swing that is attached to ropes 2.20 m long. Find the gravitational potential energy of the child-Earth
1. 3 answers
2. asked by Katie
3. 4,781 views
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small
1. 2 answers
2. asked by rob
3. 4,647 views
find the ratio of the intensities of two sounds if one is 8 dB louder than the other
1. 3 answers
2. asked by kabelo
3. 4,351 views
The first step in the Ostwald process for making nitric acid is the formation of NO as follows; 4HN3 + 5O2 makes 4NO + 6 H2O.
1. 1 answer
2. asked by lavonne
3. 4,295 views
Calculate the density of chlorine gas in g/L, at STPI'm coming up with 3.2g/L (by using 70.9 g Cl2) Cl gas is diatomic, correct?
1. 1 answer
2. asked by lavonne
3. 3,873 views
vinegar is 5.0% acetic acid, CH3COOH, by mass. vinegar has a density of 1.02 g/ml what is the madd of acetic acid in 50.0 ml of
1. 2 answers
2. asked by Anonymous
3. 3,581 views
For 0.10 M ZnCl2 and 0.10 M KAl(SO4)2, find:?a) spectator ions (if any) b) ions expected to hydrolyze (if any) c) net ionic
1. 2 answers
2. asked by Isabella
3. 3,191 views
Can you tell me if these are right please?When 2.50g of copper reacts with oxygen the copper oxide product has a mass of 2.81g.
1. 1 answer
2. asked by Jason
3. 3,002 views
We can calculate the kinetic energy of any moving object with a very simple formula: kinetic energy = 1/2 mv^2 ,where m is the
1. 4 answers
2. asked by Isabelle
3. 2,914 views
S = n/2(A+t) solve for AI don't undersand what to do with all these variables.
1. 6 answers
2. asked by Sarah
3. 2,567 views
Could you please tell me if these are right?How many moles are in the following. A.) 80.0 g of NaOH I got 2.0 moles. B.) 12.0 g
1. 2 answers
2. asked by Chris
3. 2,492 views
one endpoint of a line segment has coordinates(-3,-1). The midpoint of the line segmaent is at (1,1), what is the location of
1. 4 answers
2. asked by Ted
3. 2,471 views
The following reaction represents the decomposition of hydrogen peroxide2H2O2 -> o2 (g) + 2H2O (l) How many molecules of water
1. 1 answer
2. asked by Andre
3. 2,411 views
calculate cell potential at 25C for:3Fe3+(aq) + AL(s)= 3Fe2+(aq)+ Al3+ (aq) if Fe3+ = 0.300 M, Fe2+ = 0.150M Al3+ = 0.300M. The
1. 1 answer
2. asked by Helen
3. 2,355 views
A sample of an unknown gas effuses in 11.1 min. An equal volume of H2 in the same apparatus at the same temperature and pressure
1. 1 answer
2. asked by Ashley
3. 2,319 views
Two cars are traveling at the same constant speed v. Car A is moving along a straight section of the road, while B is rounding a
1. 3 answers
2. asked by jo
3. 2,269 views
A copper bowl and a silver bowl of equal mass were heated from 27 C to 100 C. Which required more heat? Expain. (C copper = 380
1. 2 answers
2. asked by Laura
3. 2,219 views
A certain molecule contains twice as many atoms of hydrogen as oxygen and one more atom of carbon than hydrogen. If there are 31
1. 2 answers
2. asked by steph
3. 2,126 views
Calculate the pressure of 0.55 mol NH3 gas in a 2.00 L vessel at 25 celsius, using ideal gas law.
1. 1 answer
2. asked by lavonne
3. 2,042 views
A SHEET OF CARDBOARD 180 INCHES SQUARE IS USED to make an open box by cutting squares of equal size from the corners and folding
1. 2 answers
2. asked by Oswaldo
3. 2,040 views
help with these six exam 00816,038150,038152,028004,028008 and 028006 my life depends on this
1. 2 answers
2. asked by peches
3. 2,033 views
Calculate the mole fraction of acetic acid in vinegar, assuming that vinegar is 5.00% acetic acid(by mass) and that the density
1. 5 answers
2. asked by Anonymous
3. 2,017 views
Determine the type of radiation: a frequency of 5.6 mhz
1. 3 answers
2. asked by Jennifer
3. 1,990 views
A block with a mass 4.0 kg is held in equilibrium on an incline of angle θ = 42° by a horizontal force F.a)Find the magnitude
1. 1 answer
2. asked by Diana
3. 1,988 views
solve the following pair of simultaneous equations.2x-3y=13 3x+y=3
1. 4 answers
2. asked by tia
3. 1,983 views
Find the measure of each side of isosceles triangle ABC with AB = BC if AB = 4y , BC = 3y + 2 , and AC = 3y.
1. 1 answer
2. asked by Rhonda
3. 1,941 views
Find the general solution for the equation 4tanx+cotx=5?????? and the steps please? THANYOO!
1. 1 answer
2. asked by Valerie
3. 1,934 views
Sorry DrBob, it's me again!Here's the info: Antacid Brand: Life Concentration of HCl: 0.1845 M Concentration of NaOH: 0.1482 M
1. 5 answers
2. asked by Akhed-To DrBob222
3. 1,893 views
Find two consecutive even integers such that the sum of the larger and twice the smaller is 62. PLEASE HELP I DON'T GET IT!/:
1. 2 answers
2. asked by desiree
3. 1,808 views
Given f(x)=7-2(x-1)^2, x>= 1, determine f inverse (5).
1. 1 answer
2. asked by Emily
3. 1,757 views
1.If a mass is 15 cm from the axis of rotation and makes 25 revolutions in 10 seconds, what is its speed in m/s?2.If m = 0.1 kg
1. 1 answer
2. asked by Derek
3. 1,736 views
i have to use the word fretish in a sentence as a noun, verb, and an adjective and as a different part of speech each time. i've
1. 3 answers
2. asked by Sage
3. 1,640 views
If 15.0 g of KCl is added to 100.0 g of water at 30.0 °C, how much more must be added to saturate the solution?
1. 3 answers
2. asked by pinky
3. 1,638 views
If 50.0 g of NaCl is mixed with 100.0 g of water at 80.0 °C, how much will not dissolve?
1. 3 answers
2. asked by Blue
3. 1,561 views
In the first year of production a play sells 1,572 tickets, in the second yearit sells 1,753 tickets, in its third year it sells
1. 2 answers
2. asked by pat
3. 1,537 views
A soccer player kicks a ball into the air at an angle of 36 degrees above the horizontal with a speed of 30m/sa.How long is the
1. 1 answer
2. asked by Mallori
3. 1,534 views
A 56 cm diameter wheel accelerates uniformly about its center from 130 rpm to 400 rpm in 3.2 s.(a) Determine its angular
1. 1 answer
2. asked by lauren
3. 1,455 views
when lithium hydroxide pellets are added to a solution of sulfuric acid, lithium sulfate solution and water are formed
1. 0 answers
2. asked by hailey
3. 1,423 views
Assume that a round bottom flask holds 100 mL and the distilling head has an internal volume of 12 mL in the vertical section.
1. 2 answers
2. asked by Omama
3. 1,421 views
Ferroza can buy a 24 ounce bag of ferret food for 1.19 or she can buy a 36 ounce bag for 2.89. which is the better deal?
1. 4 answers
2. asked by Brooke
3. 1,383 views
You've been banned from posting on Jiskha for a couple of days. Twice you posted questions with my name in the Name box. Do not
1. 5 answers
2. asked by Ms. Sue
3. 1,378 views
A radius of a circle has end points at O(-1,3) and R(2,2). find two possible end points for the diameter that contains this
1. 1 answer
2. asked by Ted
3. 1,339 views
I have to write a thoughtful composition on the following:Gothic novels emphasize horror, mystery, and the supernatural. Write
1. 1 answer
2. asked by Ana
3. 1,327 views
Thank you for your help. I did want to clarify why you are only calculating the Molar Mass for H2 and not the molar mass for H2O
1. 3 answers
2. asked by Andre
3. 1,316 views
Suppose that the price of a stock is $50 at the beginning of a year and $53 at the end of the year, and it pays a dividend of $2
1. 2 answers
2. asked by Tracey
3. 1,280 views
Two ice skaters, with masses of 30kg & 85 kg are at the center of a 30m diameter circular rink. The skaters push off against
1. 1 answer
2. asked by Rene
3. 1,261 views
A toy sled with a mass of 1.0 kg is sliding down a ramp that makes an angle of 25° with theground. The coefficient of kinetic
1. 2 answers
2. asked by Jeremy
3. 1,233 views
what is the osmolarity of a .20 M solution of Na3PO4?
1. 1 answer
2. asked by Dana
3. 1,221 views
A skier of mass 75.0 kg is pulled up a slope by a motor-driven cable. How much work is required to pull the skier 60.0 m up a
1. 0 answers
2. asked by ed
3. 1,213 views
What is the wavelength(in meters) of a proton(mass=1.673x10^-24g) that has been accelera ted to 25% of the speed of light?
1. 1 answer
2. asked by Whitney
3. 1,213 views
for he formula A=P+Prt, find the value of(a). (i) A when P = 750. r=0.09 and t=8 (ii) P when A=720.r=0.12 and t=5 (b) make t the
1. 2 answers
2. asked by tia
3. 1,206 views
A)"Whoa there, buddy," Leticia cautioned. "Let's not jump to any conclusions."B)"Whoa there, buddy," Leticia cautioned, "Let's
1. 4 answers
2. asked by danny g
3. 1,188 views
Eddings Company had a beginning inventory of 400 units of Product XNA at a cost of $8.00 per unit. During the year, purchases
1. 1 answer
2. asked by ali
3. 1,177 views
It is not what an author says, but what he or she whispers that is important,what does it mean? what are some short story is
1. 1 answer
2. asked by 000
3. 1,160 views
What supernatural elements does Mary Shelley include in chapters 1-8 of frankenstein?Include textual evidence, please.(:
1. 2 answers
2. asked by Ana_x00
3. 1,148 views
find the dimensions of the rectangular area of maximum area which can be laid out within a triangle of base 12 and altitude 4 if
1. 2 answers
2. asked by Oswaldo
3. 1,127 views
Calculate the theoretical amount of CaCl2 that would be required to change the temperature of 50ml of water from room
1. 3 answers
2. asked by Sarah
3. 1,120 views
How is total revenue change from budget calculated. I take the actual number with the budget number and add or subtract them
1. 0 answers
2. asked by MaryAnn
3. 1,110 views
5g+4(-5+3g)=1-gmy solve(which didn't work tried 5 times) 5g-20+12g=1-g 17g-20=1-g 18g-20=1 18g=21 g=21/18=7/6 where did i go
1. 1 answer
2. asked by Jake
3. 1,092 views
the time index t runs from a to A.if an investment produced a continuous stream of income over 10 years at a rate of $20,000 per
1. 0 answers
2. asked by May
3. 1,077 views
summary of The king is dead long live the king by Mary E. Coleridge
1. 1 answer
2. asked by Anonymous
3. 1,075 views
1. Find the slope of the line through the pair of points.(-1/3,0) and (-1/2,-1/2) Choices: -3 1/3 -1/3 3 2. Write in standard
1. 4 answers
2. asked by Jacob
3. 1,070 views
A box slides down a 36° ramp with an acceleration of 1.05 m/s2. Determine the coefficient of kinetic friction between the box
1. 3 answers
2. asked by Diana
3. 1,064 views
A 24ft high conical water tank has its vertex on the ground and radius of the base is 10 ft. If water flows into the tank at a
1. 1 answer
2. asked by daani
3. 1,063 views
Name the complete subject and the simple subject in the sentences.1. The ocean view is magnificent. Complete Subject - The ocean
1. 1 answer
2. asked by Calel Stephens
3. 1,063 views
A)When she told him those socks are interesting she meant the socks looked ridiculous.B)When she told him "Those socks are
1. 4 answers
2. asked by danny g
3. 1,054 views
2. Predict the approximate amount of heat liberated by burning a gram of candle wax and a gram of propyl alcohol (Note: candle
1. 2 answers
2. asked by vanessa
3. 1,050 views
how should I use having been introduced to the guest of honor in a sentence
1. 2 answers
2. asked by judson
3. 1,040 views
find the limit of f'(x) = 1/(√x) using the limit definition of derivative.
1. 2 answers
2. asked by John
3. 1,032 views
the ratio of two integers is 9:7. their sum is 1024. find the two integers.
1. 1 answer
2. asked by stephanie
3. 1,025 views
Find each measure using the given measures of triangleXYZ. Round angle measures to the nearest degree and side measures to the
1. 1 answer
2. asked by tracy
3. 1,013 views
An 8.00 g bullet is fired into a 160 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet
1. 1 answer
2. asked by A
3. 1,005 views
By adding sentence variety in writing you can give it life and rhythm. Your readers can be bored by reading too many sentences
1. 1 answer
2. asked by jessica
3. 991 views
Jones Company had 100 units in beginning inventory at a total cost of $10,000. The company purchased 200 units at a total cost
1. 0 answers
2. asked by lamyaa
3. 979 views
when doing decimoles and multiplying them by whole numbers...for example 4.7805 multiplyed by 1000 dose the decimole go 4places
1. 2 answers
2. asked by christina
3. 978 views
Heather in her Corvette accelerates at the rate of (3.40ihat- 2.00jhat) m/s2, while Jill in her Jaguar accelerates at (1.00ihat
1. 1 answer
2. asked by natalie
3. 961 views
Between 1763 and 1789, the use and control of the frontier regions presented problems to both the British and the Americans.
1. 1 answer
2. asked by Amanda
3. 940 views
How many grams of CO2 are contained in 550 mL of the gas at STPI've worked all of these questions and I'm trying to see if I'm
1. 1 answer
2. asked by lavonne
3. 938 views
What are four things that organisms compete for, to meet their needs?
1. 3 answers
2. asked by kyli
3. 933 views
On a distant planet, golf is just as popular as it is on earth. A golfer tees off and drives the ball 4.9 times as far as he
1. 0 answers
2. asked by Anonymous
3. 927 views
Calculate the weight of KHP that will react with 25mL of .1M NaOH
1. 2 answers
2. asked by Sierra
3. 923 views
A ball is project from the building of height 250m, at angle 45degree below the horizontal with a speed of 25m/s.i) how long
1. 1 answer
2. asked by sam
3. 914 views
So, for this one, it is 2x-14=3x+6Can someone please explain to me how they would solve this problem? I think you would add 14
1. 4 answers
2. asked by Allyson
3. 883 views
show the make -a- ten fact you used with sum?
1. 1 answer
2. asked by Frankie
3. 875 views
A driver of a 7550 N car passes a sign stating "Bridge Out 25 Meters Ahead." She slams on the brakes, coming to a stop in 10 s.
1. 0 answers
2. asked by jesse
3. 872 views
A revolutionary war cannon, with a mass of2170 kg, fires a 18.1 kg ball horizontally. The cannonball has a speed of 146 m/s
1. 0 answers
2. asked by Cole
3. 869 views
An airplane with a speed of 13 m/s is climbing upward at an angle of 48° counterclockwise from the positive x axis. When the
1. 0 answers
2. asked by Anonymous
3. 863 views
A jet pilot takes his aircraft in a vertical loop.f the jet is moving at a speed of 1500 km/h at the lowest point of the loop,
1. 2 answers
2. asked by Anonymous
3. 861 views
The endpoints of the diameter of a circle are A(-1,1) and B(0.5,-3). calculate the radius of the circle.
1. 3 answers
2. asked by Ted
3. 858 views
In English I'm confused on how you would know where to put the lines of complication in a story map?
1. 0 answers
2. asked by Billie
3. 850 views
A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin,
1. 0 answers
2. asked by jake
3. 832 views
the diagram below represents a drinking glass of diameter 10cm. it is partially filled to a height of hcm with apple juice.(a)
1. 1 answer
2. asked by tia
3. 811 views
A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small
1. 1 answer
2. asked by Lacey
3. 800 views
A car starts from rest and accelerates at a constant rate of 1.1 m/s2. If the radius of the car wheels is 29 cm, and the final
1. 2 answers
2. asked by Sufian Syed
3. 798 views
An athlete throws a basketball upward from the ground, giving it speed 10.8 m/s at an angle of 64.0° above the horizontal.(a)
1. 0 answers
2. asked by natalie
3. 794 views
When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 9.0
1. 1 answer
2. asked by Mattie
3. 789 views
An object is dropped onto the moon (gm = 5 ft/sec2). How long does it take to fall from an elevation of 250 ft.?
1. 3 answers
2. asked by shaun
3. 789 views
A 89.0 N grocery cart is pushed 13.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. If all
1. 2 answers
2. asked by ed
3. 783 views

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