August 28, 2014

Search: How to Calculate..

Number of results: 17,734

Given the weight of phenacetin and its percentage would I calculate its melting point?
February 6, 2008 by Raj

Calculate the force of gravatational attraction between two spheres of mass 10.1 kg and 45.4 kg that are 38.5 m apart. F = G(m1)(m2)/r^2 = 6.67 x 10^-11(10.1)(45.4)/38.5^2 = 2.06 x 10 ^-11 N
April 2, 2008 by Jon

given that R= 2p(squared) divided by Q-3 1)Calculate the value of R when P=6 and Q=12. 2)rearrange the formula to make Q the subject.
April 7, 2008 by scott

Chem II
Calculate the pH and percent ionization for the solution made up of 0.035 M NH3 and 0.015 M NH4Br.
April 14, 2008 by Ken

Calculate the current required to transfer 0.015 mols of electrons in a time of 20 min
April 22, 2008 by Priya

how to Calculate 30% of 40, and 25% of 20, then add the two results together? is the following correct 0.3 x 40 = 12 0.25 x 20 = 5 the total would be 12 + 5= 17
July 24, 2008 by Jennyv

What is the balanced chemical equation for the reaction used to calculate of delta Hdagrees f of CaCO3(s)?
October 19, 2008 by Lilit***

Calculate the pH of concentrated hydrochloric acid if this solution is 24.8 % HCl by weight and has a density of 1.16 g/mL. a. ) -0.77 b. ) -0.83 c. ) -0.90 d. ) -0.98 e. ) -1.01 i got c
November 1, 2008 by A.A

Calculate ΔHrxn for the reaction 3 O2(g) ==> 2 O3(g) This is the information I am given: 2H2S(g) + SO2g) ==> 3S(s) + 2H2O(l)
December 10, 2008 by Chris

Calculate the number of C, H, and O atoms in 4.50 g of glucose (C6H12O6), a sugar. okay i did it and i got just the C right and not the H and O help?
January 5, 2009 by lyne

The pH of a 1.00 10-3 M solution of pyrrolidine is 10.82. Calculate Kb. i keep getting anumber that is ^ (positive) and thats way to big....
February 15, 2009 by Jennifer

AP Chemistry
In the titration of 50.0 mL of 1.0 M CH3NH2 (kb=4.4 x 10^-4), with 0.50 M HCl, calculate the pH a) after 50.0 mL of 0.50 M has been added b) at the stoichiometric point.
March 29, 2009 by some kid

Calculate the root mean square speed (rms) for gaseous NH3 at 315 K
April 20, 2009 by Anonymous

Can someone show me how to calculate the inner quartile range for the data set given? { 72, 80, 80, 82, 88, 90, 96}. Thanks.
July 29, 2009 by B.B.

How do I calculate how much sodium bicarbonate I need to neutralise 1L of 18M sulphuric acid?
August 30, 2009 by Gille

Consider the titration of 50.0 mL of 0.20 M NH3 (Kb = 1.8x10^-5) with 0.20 M HNO3. Calculate the pH after addition of 50.0 mL of the titrant.
October 7, 2009 by Anonymous

Is it possible to calculate the torque acting on a rigid body without specifying the origin?
October 9, 2009 by tom

After 0.6523 g of is heated, the residue has a mass of 0.3423 g. Calculate the % H2O in the hydrate.
October 13, 2009 by Jim

how can you calculate the net charge of an ion if you know the number of protons, neutrons, and electrons it contains?
November 4, 2009 by rica

Using the financial statements for the Goodyear Calendar Company, calculate the 13 basic ratios
November 12, 2009 by Tonie

Given the fuction y = log3(x+3)+2, calculate the zero of the function. GIve an exact answer.
December 12, 2009 by Cyn

Calculate the mass of SO3 gas that forms when 10g of SO2 reacts with oxygen
February 26, 2010 by Anonymous

calculate the volume of 0.1M NaOH which must be added to 50 mL of 0.1M HCl to give a final solution of pH 6???
March 4, 2010 by sara

calculate the pH for a solution that is made by combining 125ml of 6.0*10-2 M hydroflouric aid with 50 ml of .12 M sodium flouride?
March 4, 2010 by Nikki

Calculate the pH at 298K of solutions having the following ion concentrations? A. [H+]=1.0 x 10^-4M B. [H+]=5.8 X 10^-11M for A do you subtract 1.0 X 10^-14 from H+]=1.0 x 10^-4M
March 8, 2010 by Anonymous

personal finance
must calculate whether a couple should rent or buy a home.
March 11, 2010 by don

how to calculate price elasticity of demand of $3.00 to a increase to $3.50 and explain your reasoning and interpret the results
March 27, 2010 by susie quick

Calculate the percent by mass of water in magnesium sulfate heptahydrdrate (MgSO4-7H2O)
April 13, 2010 by Kim

Calculate the percent by mass of water in magnesium sulfate heptahydrdrate (MgSO4-7H2O)
April 13, 2010 by Kim

Use this percentage to calculate the mass of fluorine in grams contained in 29.0 g of copper (II) fluoride
April 25, 2010 by melissa

College chemistry
How do you calculate the number of mL you would use to prepare 5.0 L of 0.20 M NaOH from a 5.23 M stock solution.
April 26, 2010 by laney

calculate the amount of heat necessary ti raise the temperature of 8.5kg of water from 12.5 to 84 degrees C
May 4, 2010 by Quentin

College Chemistry
How do i calculate the pH when 200ml of .200M HCl is added .4998M of sodium acetate?
May 9, 2010 by Jim

College Chemistry
How do i calculate the pH when 200ml of .200M HCl is added .4998M of sodium acetate?
May 9, 2010 by Jim

Algebra 2/trig
How would I calculate the following function value? tan = 29degrees 36feet
May 15, 2010 by Brenna

Calculate (triangle H) for the complete combustion of 10.0g benzen. Equation? and could someone give me the answer?
May 20, 2010 by Anonymous

Please help, I need to calculate the gradient of a straight line that passes through the points (4,3) and (10,0)
July 8, 2010 by Just

calculate volume of co2 produced by combustion of 40 ml of acetone in presence of excess oxygen?
August 8, 2010 by siddhant

Calculate the volume of the body which is obtained by rotating the curve y = ex 2px, 0  x  1 about the x-axis.
August 13, 2010 by Student

How would I calculate the area of a sector of a circle with radius 2 m that subtends an angle pi/3
August 14, 2010 by Dave

Calculate the expansion work done when 50 g of water is electrolysed under constant pressure at 25C
September 5, 2010 by Dana

Physical chemistry
Calculate the pressure exerted by 1.0 mol C2H6 behaving as a perfect gas
September 13, 2010 by Melissa

How do you calculate the PH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of 1.0 M sodium lactate?
September 18, 2010 by nicki

A horse with a force of 50 N pulls a cart of wood a distance of 10 m. Calculate the amount of work done.
October 6, 2010 by George perez

I need to calculate the density, with work shown. 50.0 mg of a gas which occupies a volume of 0.0064 L ?
October 7, 2010 by alisha

a 10-kg bos slides down a frictionless ramp with acceleration 3.6 m/s calculate the weight anlge? f ?
October 8, 2010 by Bolo

Calculate the tangential speed of the earth around the sun (assuming a circular orbit).
October 13, 2010 by Tamara

Sample size is 24, Mean rate of 6.50%, Standard Deviation is 1.20. Calculate 90% of confidence interval
October 14, 2010 by sue

calculate the number of moles of solute present in 124.0g of a solution that is 6.45% glucose by mass.
October 14, 2010 by lulu

calculate the impulse necessary to stop a 1500 kg car travelling at 90km/hour
October 18, 2010 by Anonymous

Calculate the volume of the figure shown. a = 8 and b = 12. Use 3.14 for pi and round answer to the nearest tenth
March 28, 2011 by BreAnna

Use Newton's Method with the function f(x)=x^2-2 and initial value Xo=2 to calculate x1,x2,x3. I have no idea how to do this
October 27, 2010 by Don

calculate the molality of a solution that has 1.02kg sucrose (C12H22O11), dissolved in 554g water.
October 27, 2010 by julia

Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet.
October 29, 2010 by Mattie

Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet.
October 31, 2010 by Lisa

UW River Falls
Calculate the enthalpy change, , for the process in which 40.0 of water is converted from liquid at 12.8 to vapor at 25.0.
November 5, 2010 by Anonymous

Calculate the frequency of electromagnetic radiation emitted by the hydrogen atom in the electron transition from n = 7 to n = 6.
November 7, 2010 by Emily

Chem 110
Calculate amount of milliliters of 2.0 M HCl needed to neutralize 0.15 mol of NaOH
November 8, 2010 by Matilda

Describe other measurements besides IAT sociologist utilize to calculate prejudice?
November 14, 2010 by Shantai

calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n=5 to n=1 how do I do this?
November 21, 2010 by Lisa

The solubility of calcium sulfate at 30 degrees C is .209 g/100mL solution. calculate its Ksp.
November 29, 2010 by Al

Calculate the concentration of the solution in mass percent: 122 g KCl in 628 g H2O.
November 30, 2010 by Kelsey G

calculate the percent composition, by mass, of carbon in Na2CO3. please explain how you get the answer.
January 2, 2011 by denise

Chemistry (acids and bases)
Calculate pH, pOH, [H+], [OH-], and Ka for a 0.026 M solution of HI (a strong acid). Please help me :(
January 7, 2011 by Marie

How can I calculate exactly where a marble will drop if it is rolling of a table with very little friction??
January 8, 2011 by lia

Calculations please, 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 Delisha

Calculate the mass in grams for a gold sample that absorbs 225 to change its temperature from 16.0 to 36.0.
February 3, 2011 by Heather

Calculate the amount of Citric acid monohydrate needed to make 100 mL of 0.1 M solution
February 7, 2011 by Emily

Given that f(x) = a log x for some constant a, and that f(7)  5:282, determine the value of a and calculate f(13) to 3 decimals.
February 10, 2011 by Diane

Describe the information you need in order to calculate a segment length in a right triangle
February 11, 2011 by Jonathon

Calculate the empirical formula of each compound from the mass-composition data given below. A)41%N and 59%O B)45%Na,23%P and 32%O
February 13, 2011 by twynna

Calculate the number of moles and atoms. A)64 gm of O2 B)58.9 gm of CI C)90.5gm of (HN4)2SO4 D)243gm of Mg2
February 13, 2011 by twynna

An object is made from a cylinder with a hemisphere at each end.r=5cm, height=12 .Calculate volume.
February 16, 2011 by reshma

Calculate the pH of (1)0.150M KC2H3O2: (2)0.200M pyridine chloride, C5H5NHCl: and(3) 0.500M NaCl
February 21, 2011 by Joshua

Calculate the pH of (1)0.150M KC2H3O2: (2)0.200M pyridine chloride, C5H5NHCl: and(3) 0.500M NaCl
February 21, 2011 by Joshua

Calculate the speed of an 7.8104 kg airliner with a kinetic energy of 1.0 109 J. Answer in units of m/s.
February 27, 2011 by James

Calculate the mass of sodium bicarbonate needed to neutralize 3.0 mL of 3.0 M HCl. Show your work.
March 2, 2011 by Dan

Calculate the mass of sodium bicarbonate needed to neutralize 3.0 mL of 3.0 M HCl. Show your work.
March 2, 2011 by Dan

calculate the mass of water produced when 3 g HCL reacts with excess sodium carbonate
March 3, 2011 by joe

Calculate the distance (in km)that Larry runs if he maintains an average speed of 8km/hr for 45 minutes.
March 5, 2011 by Roger

chemistry 32
Calculate the concentration, in molarity, of a solutiion prepared by adding 9 mL of water to 1mL of 0.1 M of HCl
March 10, 2011 by Adrian

Calculate the mass of kl in grams required to prepare 5.00x10power 2mL of 2.80M solution
March 11, 2011 by lisa

Calculate the molar solubility of in the following substances. Pure water and 1.510−3 K2CrO4
March 14, 2011 by Bob

calculate the volume of water in mL needed to make 75% solution containing 50g of CaCl2
March 15, 2011 by Quinne

calculate the final Celsuis Temp when 5.0 L of Flourine gas at 50 is cooled to give a volume of 3.75?
March 24, 2011 by Dee

Calculate each of the following quantities in 0.183 mole {\rm (C_3H_5)_2O}: Find the Atoms of H and C
April 3, 2011 by Ivy

in a triangle ABC, C=10CM A=12CM ANGLE B Is 20 DEGREEZ calculate the lenght of side b
April 13, 2011 by anjai

Calculate the amount of potential energy a 3 kg can of paint has when it is placed on top of a ladder that is 2.5 m in height 1.2j ?
May 5, 2011 by Anonymous

how do you calculate the quantity of heat gained or lost? 0.60 mol of steam condenses at 100C
May 25, 2011 by Emily

Chemistry practice
Calculate using the enthaly of formation,the enthalpy of combustion of methanol,CH3OH
July 31, 2011 by Gift

$3,000 at 8% for 30 years (a) Calculate the future amount if the money were invested at simple interest
August 23, 2011 by apryl

May I please have help with this Calculate the following numbers into scientific notation 2500 nm 7 pm
September 5, 2011 by Anonymous

Calculate the decrease in temperature in degree Celsius for 115g of copper that loses 2.54kJ
September 7, 2011 by Sarah

calculate the work done in lifting a 300N weight to a height of 10 m with an acceleration 0.5m/second square.
September 12, 2011 by gallium

calculate the work done in lifting a 300N weight to a height of 10m with an acceleration 0.5 m/s square.
September 13, 2011 by armando

Sketched are the graphs of f(x)+x squared +4x-12,calculate the lenght of rs if s is the turning point of the para bola
September 15, 2011 by Sphiwe

Calculate the percent composition by mass of each element in Al(OH)3 Use at least 3 significant figures. %Al = %O = %H=
September 18, 2011 by Jerry

Calculate the amount work done on 60 N of force is used to move an object a distance of 4.0 meters
September 20, 2011 by Joe Barrera

Calculate the final temperature of 289 of water initially at 35 upon absorption of 20 of heat.
October 7, 2011 by jasmin

chem 12
Calculate [H3O] an [OH] for a sodium hydroxide solution having a pH of 12.5. I know this is a strong base, and i got the pH 12.5. But i don't know how to go from there.
October 11, 2011 by Sarah

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