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December 4, 2016

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Number of results: 23,300

Physics
a student performing the centripetal force experiment added some mass to the 25.0g acceleration block. when he did the experiment, he found that the speed at which the accelerated block separate from the magnet was 102 m/s^2. The radius of the circular motion before breakaway ...
October 14, 2015 by parna deljo

Physics
a student performing the centripetal force experiment added some mass to the 25.0g acceleration block. when he did the experiment, he found that the speed at which the accelerated block separate from the magnet was 102 m/s^2. The radius of the circular motion before breakaway ...
October 14, 2015 by Layla Smith

physics
Two crates A and B connected together by a light rope are pulled along a factory floor by an applied force, F. Crate A has a mass of 50 kg and the coefficient of friction (μ) between crate A and the floor is 0,25. Crate B has a mass of 35 kg and μ between B and the ...
June 3, 2012 by Nick

ap chemistry
The weak acid HQ has pKa of 4.89. 1)Calculate the [H3O+] of .035 M HQ. 2)Calculate the (OH-) of 0.500 M HQ ....Am I correct? a) pKa = 4.89 => - log(Ka) = 4.89 => Ka = antilog(- 4.89) = 10-4.89 = 1.29x10-5 1. Given concentration of HQ, C = 0.035 M Dissociation of HQ is ...
October 4, 2015 by patrick

Physics
A storage tank of negligible mass and 30m high is filled with gasoline. Please calculate the following. Use density values found in the book. a) The gauge pressure and absolute pressure at the bottom of the tank. b) The force that acts on a square access hatch at the bottom of...
December 9, 2015 by Kati

Calculus - average velocity
*VELOCITY OF A CAR* Suppose the distance s (in feet) covered by a car moving along a straight road after t sec is given by the function s = f(t) = 2t^2 + 48t. a. Calculate the average velocity of the car over the time intervals [20,21], [20, 20, 20.1], and [20, 20.01]. b. ...
September 21, 2008 by B <3

math
The ratio of Juma’s and Akinyi's earnings was 5:3. Juma’s earnings rose to shilling 8400 after an increase of 12%. Calculate the percentage increase in Akinyi’s earning given that the sum of their new earnings was shilling 14100. (b) Juma and Akinyi contribute all the ...
February 24, 2015 by David

for Drbob222
how do I calculate pressure exerted by H2 in a Mg and HCl reaction? (weighing by redox)
October 29, 2007 by Rebecca

chem
2 HNO3(aq) + Na2CO3(s) 2 NaNO3(aq) + H2O(l) + CO2(g) (a) Calculate H° for this reaction. kJ
November 26, 2007 by mel

ETH 125
What are some measurements sociologist use to calculate prejudice.
January 25, 2008 by AXIA

sociology
Describe other measurements sociologists use to calculate prejudice.
April 5, 2008 by someone

PHYSICS
Calculate the power output of a 1.3-g fly as it walks straight up a windowpane at 2.5 cm/s
April 10, 2008 by Lizbeth

Chemistry
How do you calculate the pH, pOH, [H3O] and [OH] for a 0.067 M solution of sodium iodate
April 14, 2008 by LT

Geomotry
How do you calculate the square footage on the surface of a cylinder if you know the diameter and length?
April 15, 2008 by Dennis

Chem II
Calculate the pH of the solution made by mixing 35.0 mL of 0.500 M ca(OH)2 with 45.0 mL of 0.710 MHCl
April 16, 2008 by Ken

history
describe other measurements sociologist use to calculate prejudice?
June 6, 2008 by tony

ict
you need to write one of these to calculate things on spreadsheets? 7 letters
June 21, 2008 by jasmine

chemistry
Calculate the number of english tons(2000 lb per ton) in 6.03 lb
August 19, 2008 by Lauren

Psychology
Describe other measurements sociologists use to calculate prejudice.
August 27, 2008 by Marty

Chemistry
Given that for ethanoic acid pKa=4.75, calculate the pH of sodium ethanoate 0.1M.
September 26, 2008 by Alice

CHEMISTRY
CALCULATE THE FORMULA UNITS IN 285G OF IRON (111)PHOSPHATE?
September 28, 2008 by DANIEL

thermochemistry
Calculate the amount of heat liberated (in kJ) from 374 g of mercury when it cools from 83.7°C to 19.1°C.
October 5, 2008 by james

Science
Calculate the density of bromine if 586g of the substance occupies 188mL
October 16, 2008 by Thao

Math help
Solve: x+5=x^2 I have (1+- sqrt 21)/2 Is that right or did I calculate something wrong?
November 9, 2008 by Shawn

math
how do you calculate the volume of a cylinder? radius: 13cm height: 11cm
November 10, 2008 by sidlord

Math/Science/Astronomy
What is the formula to calculate the illumination fraction of the Moon?
December 24, 2008 by Anonymous

chemistry
Calculate the number of C, H, and O atoms in 4.50 g of glucose (C6H12O6), a sugar. help please?
January 5, 2009 by lyne

Chemistry -- plz help
how do i calculate the percentage of ionic character .. ex. H-O = electronegativity difference = 1.2
January 7, 2009 by Jen

Eth125
Describe other measurements sociologists use to calculate prejudice.
January 11, 2009 by Ashley

Chemistry
i need help. Calculate the pH of a 0.24 M CoCl3 solution. The Ka value for Co(H2O)63+ is 1.0 10-5. how do u do these with like the Cl there?
February 15, 2009 by Lindsey

physics
If the planes mass with them in it was 318kg, calculate the force due to weight?
March 20, 2009 by danny

Chem
what are the four quantum numbers of the last electron of As this is what i have n=4 l=1 ms= 1/2 i don't know how to calculate ml. I know it's either: -1,0,1
March 30, 2009 by Laura

Chemistry
Calculate the solubility of silver chloride in a solution that is 0.140 M in NH3.
April 5, 2009 by Jack

Chemistry
Calculate the Ph of an aqueous solution that is 3.00% KOH, by mass, and has a density of 1.0242 g/ml.
August 5, 2009 by Anonymous

arithmetic
calculate this question and write each answer in standard form. (4.5*10^12)dvided by(9*10^10)
August 31, 2009 by Eman

Chemistry
How would you calculate the number of atoms for 1.004 mol bismuth
September 21, 2009 by Brooke

chemistry
Calculate the amount of heat (in calories) released when the 1.2 g sample was burned.
November 23, 2009 by Joevonie

math
Write an equation to calculate the fees F when the number of credits n is given?
December 18, 2009 by Ella Mae

college chemistry
how do I calculate the amount of heat lost by the metal, qmetal?
January 16, 2010 by Bertha

Chemistry
it says: calculate the number of grams of NH3 produced when 21.0 g of H2 react with N2.
January 21, 2010 by Judy

maths
another question ? A is an acute angle and sin A=3/5 calculate the value of tan A ??
February 8, 2010 by Amy

metro
Calculate the pH of the buffer solution that results when 10 mL of 0.10 M NaH2PO4 is added to 3 mL of 0.05 M NaOH.
March 17, 2010 by pat

microeconomic
please show me how to calculate price elasticity of demand of $3.00 increase to $3.50
March 27, 2010 by susie quick

college chemistry
How do you calculate delta[S2O8 2-] in iodine clock reaction?
March 31, 2010 by vickie

Physics
calculate the kinetic energy, in J, of a 1200kg automobile travelling at 36km/h
April 7, 2010 by john

chemistry
Calculate the solubility (in g/L) of silver carbonate in water at 25°C if the Ksp for Ag2CO3 is 8.4 x 10^-12
April 17, 2010 by Bababa

chemistry
Calculate the molar mass of baking powder (NH4)2CO3
April 18, 2010 by Tracey

calculus
to the nearest metre x=24m and y=6m. Calculate the upper bound for the value of xy
May 10, 2010 by Anonymous

Chemistry
Calculate the [H3O+] when 1.65 grams of KOH are dissolved in 500.0 mL of solution
May 12, 2010 by Amrita

chemistry
calculate the volume of .100 M KOH required to titrate 50 ml of .15 M HCl
May 18, 2010 by jared

chem
calculate the solubility of Ca(OH)2 in a 0.469M CaCl2 solution at 31 degrees C, Ksp of Ca(OH)2 is 4.96 X 10*-6
June 2, 2010 by Chloe

chemistry
calculate the densities of each of the following gases in g/L at STP: a. F2 b. CH4 c. Ne d. SO2
June 27, 2010 by Jetta

chm
The molar solubility of PbBr2 at 250C is 1.0x10^-2. Calculate the Ksp.
June 27, 2010 by ami

CHM
Calculate the solubility of Cu(oh)2 in grams per liters of solution if Ksp for Cu(OH)2 IS 4.8X 10^-20
June 27, 2010 by ami

chemistry
Calculate the pH for each of the following solutions: (a) 0.10 M NH3 (b) 0.050 M C5H5N (pyridine)
July 6, 2010 by G

chemistry
calculate the number of oxygen atoms in 49grams of sulfuric acid ?
July 11, 2010 by plzzz find

chemistry
calculate [H30+],pH,[OH-] and pOH for .025 M nitric acid (HNO3)??
July 14, 2010 by Anonymous

Maths
The first term of a g.p is 2 calculate the 4th given that common ratio ir 2
July 15, 2010 by The first term of a g.p is 2, calculate the 4th. Given that common ratio is 2

chemistry
Calculate the energy released when 200 g of ethanol are cooled from 30.0 oC to 5.00 oCeased when
July 17, 2010 by Anonymous

chemistry
Calculate the volume of 6.00 moles O2 gas at 30cm Hg and 72 degrees farenheit, thanks.
August 8, 2010 by Rae

9th grade
calculate the mass in kg of an object that weighs 1,225 N on earth.
September 7, 2010 by susan

college chemitsry
calculate the calories needed at 0 C to melt 200. g of ice
September 8, 2010 by Amanda

chemistry
How do you calculate the number of grams of solute in 0.250 L of 0.175 M \rm KBr?
September 18, 2010 by betty

chem-follow up question to previous post
how do you calculate the molar mass?
October 6, 2010 by sara

Chem
Calculate the number of grams in 1.86 moles of K. I got 72.54g is this right?
October 9, 2010 by Jen

chemistry
Calculate the molarity for 25mL of H2C2O4 in a titration with 12.46mL of KMnO4
October 11, 2010 by brian

science
Calculate the molarity of 500. mL of solution containing 21.1 g of potassium iodide
October 12, 2010 by kate

chemistry
Calculate the number of moles of CaCO3 in 3.20g of Calcium Carbonate.
October 18, 2010 by Samantha

chemistry
50 ml of.10 M HNO3 is added to 50 ml of .2M CaCl2. Calculate amount of precipitate formed?
October 24, 2010 by thomas richards

physics
Calculate the mass of the Earth, if it had a radius of 3000 km and a gravity of 6 m/s^2.
October 31, 2010 by Eileen

chemistry
Calculate the pressure in the flask in torr, atmosphere, and pascals if ha = 114 mm.
October 31, 2010 by Mattie

Chemistry
Calculate the change in heat for the reaction SO2 + 1/2O2 --> SO3
November 2, 2010 by Mary

College Chemistry
Calculate the pH of a 0.5 M Formic Acid (HCOOH) soln. ka= 0.00018
November 4, 2010 by Anonymous

Chemistry
Calculate the standard enthalpy change of the reaction ClO(g)+O3->ClO2(g)+O2(g)
November 5, 2010 by Anonymous

Physics
How do you calculate the energy needed to heat 4 kg of water from 25oC to 45oC?
November 5, 2010 by Angel

chemistry
How do you calculate the energy released when 1 mole of ethanol, C2H5OH, is burned?
November 7, 2010 by william

Chemistry
Calculate the density of F2 gas at 27 degree Celsius and 1.00 atm pressure?
November 9, 2010 by Amber

Chemistry
Calculate the velocities of electrons with de Broglie wavelengths of 1.7 102 nm and 5.0 nm, respectively.
November 13, 2010 by Anna

chemistry
The weak acid HQ has pKa of 4.89. Calculate the [H3O+] of .025 M HQ. when i did this i got 5.2 x 10 ^-14
November 15, 2010 by missy

Physics
A 3.5 kg body accelerates from rest to 20 m/s in 5 s. Calculate: A its acceleration B the force required.
November 21, 2010 by Claire

Chem
Calculate the number of grams in each of the following. (3 s.f.) 19. 0.550 mol Au ________________________
November 21, 2010 by SAMM

Interger Science
Calculate the free-fall acceleration of a 20 kg bag of salt.
November 23, 2010 by Maya

chem
calculate the number of moles of naI e50.0ml of a 0.400m
November 25, 2010 by hylton

chemistry
Calculate the H+ concentration (M) of a 0.010 M solution of NH4Cl. Note that the Kb for NH3 is 1.8 e-5.
November 28, 2010 by cs

11th grade physics
A car slows down from +32 m/s to +8 m/s in 4s. Calculate the acceleration .
November 29, 2010 by jess

Chemistry
Calculate the concentration of the solution in mass percent: 9.95 g C2H6O in 65.1 g H2O.
November 30, 2010 by Kelsey G

Chemistry
Calculate the molarity of a 5.4% sodium hydroxide solution whose density is 1.07 g/mL.
December 6, 2010 by anaymous

Chemistry
How do I calculate the thckness of tin if I am only given the density which is 7.28grams
December 7, 2010 by Anonymous

Chemistry
How do I calculate the thckness of tin if I am only given the density which is 7.28grams
December 7, 2010 by Anonymous

Physics
Calculate the volume of a spherical balloon which has a surface area of 0.0793 m2
January 11, 2011 by Megan

organic chemistry
calculate the mass in grams of 10.0ml if mercury (Hg) is the density Hg 13.6g/ml
January 14, 2011 by aries 321

physics
Calculate the number density of strontium titanate (SrTiO3), ρ = 5.12 g cm -3
January 15, 2011 by Bobby

chemistry
Calculate the pH of a 0.800 M NaCH3CO2 solution. Ka for acetic acid, CH3CO2H, is
January 16, 2011 by noel

geometry
a square has a diagonal measurement of 8 radical 2 inches. calculate its perimeter.
January 17, 2011 by taylor

elementary chemistry
Calculate the concentration in micrograms per liter: 0.001000 N Ca^2+
January 23, 2011 by Laury

Statistics
Calculate the first, second, and third quartiles of the following samples. 5 8 2 9 5 3 7 4 2 7 4 10 4 3 5 23
January 31, 2011 by James

math
calculate the volume to the nearest hundreth of a cylinder with r=6cm and h=12cm
January 31, 2011 by hamels

math
calculate the volume to the nearest hundreyh of a cylinder with r=17cm and h=3cm
January 31, 2011 by hamels

Chemistry 119
Calculate the volume (in cc) of a 0.250 pound block of aluminum.
February 7, 2011 by Anonymous

Chemistry
how to calculate number calories to heat 285 grams h2o
February 8, 2011 by Bo

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