Thursday
April 24, 2014

Search: calculate pH HClO2

Number of results: 17,066

Chemistry
An empty flask weighs 128.632g. After vaporization of a sample of volatile liquid, at a measured temperature of 99.8 C. The flask is sealed, cooled to room temperature, and weighed. The mass is now 129.225g. The measured P atm is 757.7 torr. The flask is rinsed and filled ...
Wednesday, April 6, 2011 at 11:46pm by Shannon

Physics
A 21.1 g ball of clay is thrown horizontally at + 38.7 m/s toward a 1.2 kg block sitting at rest on a frictionless surface. The clay hits and sticks to the block. A. What is the speed of the block and clay right after the collision? m/s B. Use the block's initial and final ...
Wednesday, November 7, 2012 at 11:07pm by Courtney

physics
please help i cannot figure this out A 0.27 kg ball of dough is thrown straight up into the air with an initial velocity of 12 m/s. Find the momentum of the ball of dough halfway to its maximum height on the way up. and A 61 kg pole-vaulter falls from rest from a height of 6.6...
Monday, March 21, 2011 at 7:01pm by luke

Chemistry
Calculate the final concentration for the standardization of KMnO4 given this information: 2MnO4- + 5C2O4^-2 + 16H+ -> 2Mn^2+ + 10CO2 + 8H2O [final redox equation] Volume of KMnO4 titrated with H2SO4 + Na2C2O4 = 293 mL Volume KMnO4 titrated with H2SO4 alone = 0.2 mL Amount ...
Wednesday, May 2, 2012 at 1:15pm by Katherine

Chemistry
Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage batteries(like a car battery). 1....
Thursday, January 13, 2011 at 7:34am by K

mechanics of materials
A cylindrical tank with flat endplates is constructed from two sections that are welded together circumferentially.The outer diameter of the tank is 1.20, and the wall of the tank is 20.0 mm thick and the mamimum internal pressure is 2.00 MPa. (a) Calculate the maximum hoop ...
Saturday, February 9, 2013 at 12:08pm by dmkp

mechanics of materials
A cylindrical tank with flat endplates is constructed from two sections that are welded together circumferentially.The outer diameter of the tank is 1.20, and the wall of the tank is 20.0 mm thick and the mamimum internal pressure is 2.00 MPa. (a) Calculate the maximum hoop ...
Saturday, February 9, 2013 at 1:02pm by dmkp

mechanics of materials
A cylindrical tank with flat endplates is constructed from two sections that are welded together circumferentially.The outer diameter of the tank is 1.20, and the wall of the tank is 20.0 mm thick and the mamimum internal pressure is 2.00 MPa. (a) Calculate the maximum hoop ...
Sunday, February 10, 2013 at 8:36am by dmkp

Physics
Assume that in interstellar space the distance between two electrons is about 0.87 cm. The electric force between them are repulsive. Calculate the electric force between these two electrons. The value of the Coulomb constant 9 109 N m2/C2 and the elemental charge is 1.6...
Sunday, March 3, 2013 at 10:01am by Terry

Microecon
Using the midpoints approach to the cross elasticity of demand-calculate the cross eleasticity the demand for golf at all 3 prices. Price Demand1 D2 D3 50 15 10 15 35 25 15 30 20 40 20 50 D1 -Income $50k per yr, movies $9 D2 -Income $50k -movies $11 D3 -Income $70k -movies $11...
Thursday, November 1, 2012 at 11:01am by AJ

I need HELP bad! Macroeconomics!
1). Kelly purchased ten shares of Gentech stock for $200 in year 1 and sold all the shares in year 2 for $220 a share. Between year 1 and year 2, the price level increased by 5%. The tax on capital gains is 50%. If the capital gains tax is on nominal gains, calculate how much ...
Tuesday, May 20, 2008 at 6:14pm by Sarah

physical
A proton resistor spring system in a magnetic field going out of the page has a mass of proton 1.67*10^-27 kg, a spring constant k=500 N/m and the resistor has r=5Ω. The magnetic field strength is 0.8T. a) When released from rest, calculate the maximum displacement. b) ...
Tuesday, March 30, 2010 at 10:30pm by Thomas

Physics
A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H of 31.0 m above sea level, directed at an angle q above the horizontal with an unknown speed v0. a. The projectile remains in flight for 6.00 ...
Thursday, November 5, 2009 at 5:33pm by Anonymous

Physics
Calculate the Patm And the pressure exerted by water on the block - The area Of the upper face of block is 40 cm2 Calculate the total pressure exerted on the solid Given : In the first tube : in a tube a solid .. the height from solid to the water level in the tube is 8o cm & ...
Friday, April 23, 2010 at 11:35am by Nana

mechanical properties of materials
A cylindrical tank with flat endplates is constructed from two sections that are welded together circumferentially.The outer diameter of the tank is 1.20, and the wall of the tank is 20.0 mm thick and the mamimum internal pressure is 2.00 MPa. (a) Calculate the maximum hoop ...
Saturday, February 9, 2013 at 3:37pm by dmkp

Physics
A. Calculate the force on an alpha particle in an electric field E=Exm where E=3.6E4 N/C and x is a unit vector in the x direction. What is the direction of the force? B. Calculate the acceleration of the alpha particle in this electric field. What is the direction of the ...
Sunday, December 11, 2011 at 2:28am by Kate

physics
A copper calorimeter of mass ()g contains 380g of a liquid at 12degrees Celsius. A 20W heater is used for 3 minutes to raise the temperature of the liquid and calorimeter to 17 degrees Celsius. The calorimeter has a specific heat capacity of 400 J/K kg a.Calculate the heat ...
Thursday, March 22, 2012 at 6:47am by Matteo

calculus
calculate ă/x and ă/y. (x,y) = xy + xy
Saturday, December 8, 2007 at 12:12am by Anibal

math
And if f(x)=1/2 and g (x)=x-2 how do i calculate: F-1 (4)
Tuesday, April 15, 2008 at 12:15pm by lance

math
calculate (x-3)(x+2)
Wednesday, May 7, 2008 at 3:03pm by jenna

Statistics
Calculate: 8 8 7 6 8 7 6 5 P P P P C C C C 3 4 6 1 3 5 2 0
Friday, March 25, 2011 at 5:48am by Pavlos Cs

math
calculate 10^1.27 how do i do this?
Saturday, May 12, 2012 at 8:15am by hannah

calculus
Calculate dy/dx if Ln(x+y)=e^x/y
Thursday, November 17, 2011 at 8:34pm by Tracy

Chemistry
[H^+] = 2.7 x 10^-3 Calculate for [OH^-] [OH^-] = ? M
Sunday, February 26, 2012 at 8:46pm by Matt

Algebra
How do I calculate 4^n=1/(2(n-n^2))? Thanks.
Thursday, March 1, 2012 at 2:53am by Helga

Economics
how to calculate Qd=15.0-0.2P
Saturday, March 3, 2012 at 2:50am by Dee

algebra
Calculate. 7[6+(8)^3]
Wednesday, July 25, 2012 at 9:58am by Christina

math
f f(x) = 2x and g(x) = , calculate f(x) g(x)
Friday, August 31, 2012 at 11:40am by gff

maths
how to calculate 36^6/7 ???
Monday, February 11, 2013 at 11:53am by tuhituhi

math
calculate: 6% + 1.2 * 8%
Saturday, November 30, 2013 at 6:54pm by Serenity1

physics
a worker lays a rubber handled 0.500kg hammer down a sloped roof. it slides down the roof to a level portion of the roof where it slides another 2.oo m long this horizontal surface. the coefficient of friction between the rubber handle and the shingles is 0.850 a)draw free ...
Saturday, January 12, 2013 at 3:15pm by teed

Stats ()
Coal is carried from a mine in West Virginia to a power plant in Pittsburgh in hopper cars on a long train. The automatic hopper car loader is set to put 75 tons of coal into each car. The actual weights of coal loaded into each car are normally distributed with an average of...
Friday, July 12, 2013 at 6:31pm by penelope

physics
A proton resistor spring system in a magnetic field going out of the page has a mass of proton 1.67*10^-27 kg, a spring constant k=500 N/m and the resistor has r=5Ω. The magnetic field strength is 0.8T. a) When released from rest, calculate the maximum displacement. b) ...
Tuesday, March 30, 2010 at 10:31pm by Thomas

Chemistry
XeF2 is a linear molecule with vibrational frequencies of 515 cm1 (symmetric stretch), 555 cm1 (antisymmetric stretch) and 213 cm1 (bend). A vibrational Raman spectrum is acquired using radiation at 488 nm from an argon-ion laser. Predict, with justification, which ...
Sunday, May 22, 2011 at 2:48pm by Alice

Grade 12 physics
At the beach, 3 children pull on a floating toy. Child 1 plus with a force of 15N [N 24E], child 2 pulls south and child 3 pulls west. The net force of the toy is zero. Assume that there are no other significant forces acting on the toy. a) Calculate the magnitude of the ...
Sunday, September 29, 2013 at 1:09pm by keisha

Macroeconomics
1). Kelly purchased ten shares of Gentech stock for $200 in year 1 and sold all the shares in year 2 for $220 a share. Between year 1 and year 2, the price level increased by 5%. The tax on capital gains is 50%. If the capital gains tax is on nominal gains, calculate how much ...
Tuesday, May 20, 2008 at 6:01pm by Sarah

physics
in an electron microscope, a tungstun cathode with work function 4.5 eV is heated to release electrons that are then initially at rest just outside the cathode. The electrons are accelerated by a potential difference to create a beam of electrons with a de Broglie wavelength ...
Monday, June 9, 2008 at 10:06pm by shelly

Chemistry
You are asked to prepare 500. mL of a 0.150 M acetate buffer at pH 5.00 using only pure acetic acid, 3.00 M NaOH, and water. Calculate the quantities needed for each of the following steps in the buffer preparation. 1. Add acetic acid to ~400 mL of water in a 500 mL beaker. ...
Friday, September 28, 2012 at 2:33am by Kw1h

Economics
Help The answer i got is : GDP grew 10% GDP for 2006 using 2005 as the base year increase by 20% real GDP grow? 10% If i'm right, let me know, if not, please show Calculation Thank You Use the following data to answer questions 1-3 (be sure to provide all calculations). ...
Monday, December 1, 2008 at 10:27pm by Randy Johnson

physics
Two pucks collide on an air hockey table. Puck A has a mass of 17.0 g and is initially traveling in the +x direction at 7.00 m/s. Puck B has a mass of 51.0 g and is initially at rest. After the pucks collide, puck A moves away at an angle of 52.0 deg above the +x axis, while ...
Monday, March 24, 2014 at 9:47am by Tsion

Chemistry
The ionisation of water plays an important role in the equilibria of aqueous solutions. Kw= 1.008 x 10-14 mol2 dm-6 at 298K. (a) Calculate the pH of the following solutions at 298K showing all your working. Assume full dissociation in each case. (i) 0.054 mol dm-3 aqueous HNO3...
Sunday, April 22, 2012 at 3:10pm by Henry

Chemistry
Molar volume of an ideal gas at S.A.T.P. (25oC and 1.00 bar is 24.8 dm3 mol-1. Assume that gases are at 225oC and P=1.00 atmosphere before and after the combustion and behave as ideal gases. The chemical equation for the combustion of butane is: 2C4H10(g) + 13O2(g) → ...
Friday, February 10, 2012 at 6:28am by JRMM

Physics
A block of mass m1 is connected to an empty bucket of mass 1.35 kg by a cord over a frictionless pulley. The coefficient of the static friction between the table and the block is 0.45 and the coefficient of kinetic friction between the table and the block is 0.32. Water is ...
Monday, May 2, 2011 at 3:40pm by Mawuli

Chemistry
Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC*Delta T to calculate the temperature change of the 314 g of water. under the following conditions: A 14.7 g ice cube ...
Thursday, November 18, 2010 at 1:32am by Ricardo

Chemistry(Please check)
. Ksp for Fe(IO3)3 is 10-14. Two solutions, one being iron(III) nitrate and the other being sodium iodate, were mixed. At the instant of mixing, [Fe3+] = 10-4M and [IO3-] = 10-5M. What happens? My answer is that a precipitate forms because Qsp > Ksp. Would you agree? ...
Monday, April 9, 2012 at 9:51pm by Hannah

Physics
In a playground, there is a small merry-go-round of radius 1.20 m and mass 190 kg. Its radius of gyration (see Problem 85 of Chapter 10) is 91.0 cm. A child of mass 44.0 kg runs at a speed of 4.50 m/s along a path that is tangent to the rim of the initially stationary merry-go...
Monday, October 26, 2009 at 10:46pm by Ray

Mathematics
an aircraft's reading shows time 8:55 at distance travelled 957km time 9:07 at distance travelled 1083 calculate distance travelled in km calculate the average speed of aircraft in km/h (for the 1st question 1083-957= 126km) (the second one should i add 1083+957km then divided...
Thursday, July 26, 2012 at 11:47am by INDIANA

Physics
I have to design a procedure which will allow me to calculate the applied force(thrust) of a stomp rocket. We are allowed to use tools to find measurements. So far, I have calculated the height that the rocket reached (22.5) m using trig. (right angle triangle where one angle ...
Thursday, July 22, 2010 at 3:35pm by Mackenzie

Physics
When William Tell shot the apple off his son's head, the arrow remained stuck in the apple, which means the collision between the arrow and apple was totally inelastic. Suppose that the velocity of the arrow was horizontal at 75 m/s before it hit, the mass of the arrow was 45 ...
Sunday, April 12, 2009 at 10:24pm by Claire

Chemistry
Suppose that 30.0 mL of 0.20 M C6H5COOH(aq) is titrated with 0.30 M KOH(aq). Refer to table 1 and table 2. (a) What is the initial pH of the 0.20 M C6H5COOH(aq)? Using ICE i found to be 2.46 The rest I do not know how to set up or solve... (b) What is the pH after the addition...
Friday, March 12, 2010 at 3:58pm by Val

Physics -Bungee Jumping Problem
A 75kg person jumps off a tower with a bungee cord tied around their leg. The cord obeys Hooke's Law and has a cord constant value of k=50 Nts/m. After falling a distance of 15m, the cord begins to stretch. Neglecting air resistance and the mass of the cord, a) calculate how ...
Wednesday, February 21, 2007 at 10:19pm by kbmr

PHYSICS!!!
A liquid ( = 1.65 g/cm3) flows through a horizontal pipe of varying cross section as in the figure below. In the first section, the cross-sectional area is 10.0 cm2, the flow speed is 288 cm/s, and the pressure is 1.20 105 Pa. In the second section, the cross-sectional area ...
Sunday, November 11, 2012 at 5:33pm by k

POPULATION
If a population consists of 10,000 individuals at time t=0 years (P0), and the annual growth rate (excess of births over deaths) is 3% (GR), what will the population be after 1, 15 and 100 years (n)? Calculate the "doubling time" for this growth rate. Given this growth rate, ...
Tuesday, October 6, 2009 at 11:16pm by Anonymous

sociology
Describe other measurements sociologists use to calculate prejudice. http://www.jiskha.com/search/search.cgi?query=Describe+other+measurements+sociologists+use+to+calculate+prejudice
Saturday, June 30, 2007 at 5:55pm by ann

physics
a) A set of crash tests consists of running a test car moving at a speed of 12.6 m/s (27.7 m/h) into a solid wall. Strapped securely in an advanced seat belt system, a 69.0 kg (151.8 lbs) dummy is found to move a distance of 0.600 m from the moment the car touches the wall to ...
Monday, February 27, 2012 at 1:28pm by Katie

kinetics
a stationary car is hit from behind by another car travelling at 40km per hr. After collision both cars remain locked together. The masses of the stationary car and the moving car are 1500kg and 1300kg respectively (use g=9.8ms-2) a) is this an elastic or inelastic collision b...
Thursday, March 8, 2012 at 5:54pm by dmkp

kinetics
a stationary car is hit from behind by another car travelling at 40km per hr. After collision both cars remain locked together. The masses of the stationary car and the moving car are 1500kg and 1300kg respectively (use g=9.8ms-2) a) is this an elastic or inelastic collision b...
Friday, March 16, 2012 at 6:15am by dmkp

kinetics
a stationary car is hit from behind by another car travelling at 40km per hr. After collision both cars remain locked together. The masses of the stationary car and the moving car are 1500kg and 1300kg respectively (use g=9.8ms-2) a) is this an elastic or inelastic collision b...
Friday, March 16, 2012 at 6:17am by dmkp

kinetics
a stationary car is hit from behind by another car travelling at 40km per hr. After collision both cars remain locked together. The masses of the stationary car and the moving car are 1500kg and 1300kg respectively (use g=9.8ms-2) a) is this an elastic or inelastic collision b...
Wednesday, March 28, 2012 at 12:51pm by dmkp

science
The moon is the earth's nearest neighbor in space the radius of the moon is approximately one quarter of the earth's radius and it's mass is one eightieth of the earth's mass.(a)calculate the weight of an object with a mass of 50.0kg on the surface of the moon.(b)calculate the...
Thursday, February 21, 2013 at 4:21pm by lebo

12 Chemistry
What is the molar enthalpy of combustion of magnesium? This was the lab question that I was asked to find after performing a lab based on Hess' law. I can't find anywhere in my notes how to calculate this, and the text book doesn't explain their steps properly, and I have ...
Saturday, March 29, 2008 at 10:58am by Chase (sorry if this long)

Chemistry
given 6.7 grams of sodium acetate and 6.7 g of magnesium acetate, calculate the number of moles of acetate in sodium acetate. calculate the number of moles of acetate in magnesium acetate.
Sunday, August 28, 2011 at 9:36am by Jessica

Chemistry
Suppose that 50.0 mL of 0.25 M CH3NH2(aq) is titrated with 0.35 M HCl(aq). (a) What is the initial pH of the 0.25 M CH3NH2(aq)? (b) What is the pH after the addition of 15.0 mL of 0.35 M HCl(aq)? (c) What volume of 0.35 M HCl(aq) is required to reach halfway to the ...
Wednesday, November 3, 2010 at 5:00pm by Dana

Physics
In a playground, there is a small merry-go-round of radius 1.20 m and mass 190 kg. Its radius of gyration (see Problem 85 of Chapter 10) is 91.0 cm. A child of mass 44.0 kg runs at a speed of 4.50 m/s along a path that is tangent to the rim of the initially stationary merry-go...
Monday, October 26, 2009 at 11:18pm by Ray

physics
An unstable atomic nucleus of mass 17.0 10V27 kg which is at rest disintegrates into three particles. One of the particles, of mass 5.00 10V27 kg, moves in the y direction with speed 4.50 Mm/s. Another, with mass 8.40 10V27 kg, moves in the x direction with speed ...
Monday, March 28, 2011 at 4:29am by Matthew

physics
A square plate made of copper has a length of 4.253 m on a side, at 15.00 degrees Celsius. A hole is drilled in the plate, the diameter of which is 1.750 m. The plate is heated to 177.00 degrees Celsius. Assume that alpha= 16.8* 10^-6 for copper. A) calculate the length of a ...
Monday, March 7, 2011 at 10:54am by Shreya

chemistry
When 1.0 mol of ammonia gas in injected into a o.50L flask, the following reaction proceeds to equilibrium. 2NH3 <--> N2 (g) + 3H2 (g) At equilibrium, 0.30 mol of hydrogen gas is present. a) calculate the equilibrium concentrations of N2 and Nh3. b) what is the value of ...
Sunday, November 26, 2006 at 2:39pm by Luke

MATH
If a population consists of ten thousand individuals at time t=0 (P0), and the annual growth rate (excess of births over deaths) is 3% (GR), what will the population be after 1, 15, and a 100 years (n)? Calculate the "doubling time" for this growth rate. Given this growth rate...
Friday, October 9, 2009 at 11:16am by HEENA

Biochemistry
You wish to measure the change in G'for the hydrolysis of ATP: ATP ---> ADP + Pi but the equilibrium for the hydrolysis lies so far toward products that analysis of the ATP concentration at equilibrium is neither practical nor accurate. However, you have the following data...
Saturday, September 12, 2009 at 7:56pm by Mallory

chemistry
CH3NH2(aq)+H2O(l)=>CH3NH3+(aq)+OH-(aq) Kb=4.4 x 10^-4 Methylamine, CH3NH2, is a weak base that reacts with water according to the equation above. A student obtains a 50.0 mL sample of a methylamine solution and determines the pH of the solution to be 11.77. (a) Write the ...
Thursday, April 4, 2013 at 6:08pm by ashdawg

AP Chemistry
CH3NH2(aq)+H2O(l)=>CH3NH3+(aq)+OH-(aq) Kb=4.4 x 10^-4 Methylamine, CH3NH2, is a weak base that reacts with water according to the equation above. A student obtains a 50.0 mL sample of a methylamine solution and determines the pH of the solution to be 11.77. (a) Write the ...
Thursday, May 2, 2013 at 12:41am by Christina

chemistry
how to calculate persenteil
Tuesday, March 11, 2008 at 6:44am by Anonymous

math
For the vectors u=(2,-3) and w=(-1,2), calculate |-3u| - |2w|.
Friday, April 4, 2008 at 5:34pm by Devon

maths
f(x)= 2x+5/x-4 and g(x)=2x-3 1)Calculate the value of g(4) 2)fg(2) 3)g`1 (7)
Wednesday, April 9, 2008 at 10:19am by cassie

Algebra
Calculate the value of |7.3| |2.1|
Monday, June 1, 2009 at 1:13pm by Laurie

Calculus
Given that f(x)=x^6h(x) h(-1)=3 h'(-1)=6 Calculate f'(-1).
Friday, September 4, 2009 at 4:54pm by Z32

math
how do you calculate 12 2/3 minus5 7/9
Wednesday, January 20, 2010 at 11:46pm by darion

Chemistry
How do you calculate Cwater?
Tuesday, July 27, 2010 at 4:29pm by Anonymous

math
calculate the discriminant of 3x^2 - 4x + 2
Saturday, October 30, 2010 at 12:36pm by jake

calculus
Calculate the integral from 0 to 4 of |x^2 - 1|. Thanks!
Monday, November 8, 2010 at 9:09pm by Jp

chemistry
Calculate the pH of 3.9 10-8 M HNO3.
Sunday, November 28, 2010 at 9:47pm by justin

Chemistry
Calculate the [H+] in a solution that has a pH of 9.00.
Saturday, May 14, 2011 at 10:49pm by teena

Chemistry
Calculate the [H+] in a solution that has a pH of 9.00.
Saturday, May 14, 2011 at 10:49pm by teena

chemistry
calculate the solubility of na cl
Tuesday, June 21, 2011 at 10:20am by shafie

Chemistry
Calculate the ph of 10^-8 M (HCL).
Wednesday, June 29, 2011 at 1:05pm by gagan

mahs
calculate the range for 20,44,18,16,27,20,14,18,22,27,16
Saturday, November 5, 2011 at 1:47pm by dorcas

calculus
calculate y = log_10(x) where x = 0.3
Monday, January 23, 2012 at 4:53pm by Sara

maths
calculate the derivative of x^5-x+2/x^3+7
Friday, February 3, 2012 at 1:43am by victor.m

Chemistry
Calculate the pH of 1.7M of KCl
Wednesday, July 4, 2012 at 1:19pm by Lynette

chem
What is the formula to calculate qp?
Thursday, July 12, 2012 at 2:54am by lani

math
how i calculate this equation 32/14*6+40-8
Tuesday, October 9, 2012 at 10:47am by navi

math
Calculate the sum of 1/4 and 1/3.
Tuesday, February 12, 2013 at 12:45pm by monet

math
Calculate the sum of 1/4 and 1/3.
Wednesday, February 13, 2013 at 1:45pm by Anonymous

Calculus
calculate the derivative (2,5) (2.1,5.3) h'(2) if h(x)=(f(x))^3 k'(2) if k(x)=f(x))^-1 g'(5) if g(x)=f^-1(x)
Monday, February 18, 2013 at 10:53pm by Jake

math
please calculate: 67.95% * 9% + 27.98% * 5% + 4.08% * 7%
Wednesday, November 27, 2013 at 10:07pm by Serenity1

math
please calculate: 6% + 1.2 * 8%
Saturday, November 30, 2013 at 8:33pm by Serenity1

geometry
Calculate lengths of ap,bp,cp. A(0,0) B(0,2k) C(2h,0) P(h,k)?
Wednesday, January 22, 2014 at 2:10pm by ann

science
Bill finds an unusual object and wishes to calculate it's density. He discovers a problem of accurately weighing it, because it won't stay on the weighing pan. To solve this he adds the object to a beaker containing 59 mL of distilled water and finds the water level rises to ...
Tuesday, August 18, 2009 at 10:54pm by Arthur

physics
Two point charges, q1 and q2, are placed 0.30 m apart on the x-axis, as shown in the figure above. Charge q1 has a value of 3.0 x 109 C. The net electric field at point P is zero Q: Calculate the magnitude of charge q2. Q: Calculate the magnitude of the electric force on q2 ...
Thursday, February 23, 2012 at 4:09pm by Kayberlynn

Chemistry
I have had this question in my homework, and honestly I got stuck in these questions. I managed to convert 5.3g of Na2CO3 into moles, but then I got stuck and do not know what to do next to solve the question. If anyone knows how to work this out, help from anyone is greatly ...
Saturday, September 29, 2012 at 5:04am by Matthias

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