Thursday
April 24, 2014

Search: Calculate the molarity of a solution made by dissolving .0715 mol Na2SO4 in enough water to form 650mL of solution

Number of results: 18,251

chemistry
If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution?
Sunday, October 6, 2013 at 10:08pm by Anonymous

chemistry
If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution?
Sunday, October 6, 2013 at 10:14pm by Sean1987

chemistry
What is the molarity of a solution containing 18.0g of KCl in 262mL of KCl solution?
Wednesday, November 6, 2013 at 8:06pm by millie

Chemistry
What is the molarity of a NaOH solution if 21.3 mL of the NaOH solution is neutralized by 10.4 mL of 6.10 M H3PO4?
Sunday, April 20, 2014 at 11:21pm by taytay

Physics - please help!!..
A long thin rod lies along the x-axis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters. 1. Calculate the total mass of the ...
Wednesday, February 12, 2014 at 8:48am by Molly

College Chemistry
You weigh a sample of a monoprotic unknown acid and dissolve it in 50.00 mL of distilled water. Exactly half of this solution is titrated with Sodium Hydroxide to the phenolphthalein end point. The pH of the other half of the original solution is measured with a pH meter. The...
Tuesday, April 9, 2013 at 4:31pm by Kim

ACS
Whatis the molarity of an HCl solution if 25mL of this solution require 19.58mL of 0.1062M Sr(OH)2 solution for complete reaction? The reaction is give below Sr(OH)2 + 2HCl --> SrCl2 + 2H2O
Wednesday, November 21, 2007 at 11:47am by Debro

AP Chemistry
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.036 moles of sulfuric acid is mixed with water to make 576 mililiter of solution, what is the molarity of H+?
Sunday, September 30, 2012 at 8:08pm by J. A

General Chemisty
42.55mL of a standardized 1.005 M NaOH solution was necessary to exactly neutralize 30.0mL of an aqueous H2SO4 solution of unknown concentration. What is the molarity of the H2SO4 solution?
Sunday, February 16, 2014 at 2:30am by Cherokee

chemistry
Calculate the change in internal energy of the system in a process for which 100J of heat is absorbed by the system from surroundings and does 85J of work. (I want to learn the solution on how to calculate it... pls. help thank you... )
Sunday, January 23, 2011 at 11:49am by jaycab

chem help
the primary visible emissions from mercury are 404.7 nm and 435.8 nm. Calculate the frequencies for these emissions. Calculate the energy of a single photon and of a mole of photons of light with each of these wavelengths.
Thursday, March 29, 2012 at 2:43am by danielle

Chemistry
Calculate the energy released when an electron is added to a hydrogen nucleus. Assume the transition is n= infinite to n=1. I know equation to use but how do I calculate when n is infinite and no number ?? Please some help
Thursday, November 29, 2012 at 12:39am by Anonymous

Chemistry
How would I calculate this? I have the answer because its from a previous test I just want to know how I would calculate it. How many grams of NaCI are contained in 350. mL of a 0.133 M solution of sodium chloride?
Sunday, June 30, 2013 at 9:10am by Mary

HEALTH
The key to using a pedometer to meet the Physical Activity Guidelines for Americans is to _________. A. First set a time goal and then calculate how rigorous the steps need to be each day to reach your goal B. First calculate how many steps are needed weekly and then match it ...
Wednesday, April 17, 2013 at 3:54pm by CARRIE

Physics
A car of mass 1200kg starts from rest, accelerates uniformly to a speed of 4.0 meters per second in 2.0 seconds and continues moving at this constant speed in a horizontal straight line for an additional 10 seconds. the brakes are then applied and the car is brought to rest in...
Tuesday, December 4, 2012 at 5:00am by Ken

Chemistry
Suppose that we had used 25.5cm3 of 0.200M NaOH and 42cm3 of dilute HCl to reach the end point. What is the molarity of the Hcl acid? HCl = NaOh--> NaCl + H20
Monday, March 15, 2010 at 12:27am by Anonymous

Chemistry
Sulfuric acid (H2SO4) is a very diprotic acid. If 0.046 moles of sulfuric acid is mixed with water to make 638 mililiter of solution,what is the molarity of H+? Answer in units of M.
Thursday, September 23, 2010 at 8:36pm by Cheyenne

CHEMISTY
Determine the molarity of sodium cations in solution when 6.21 g of sodium sulflate are mixed with 2.97 g of sodium nitrate in pure water to produce 350.0 mL of solution.......please explain every step. thanks!
Monday, December 13, 2010 at 3:57pm by Jenni

chemistry
1L of a buffer composed of acetic acid and sodium acetate has a pH of 4.3. Adding 10mL of 2M sodium hydroxide solution to 100mL of this buffer causes the pH to rise to 4.87. what is the total molarity of the original buffer?
Sunday, March 10, 2013 at 10:18pm by stephanie

Chemistry - bobpursley pls help
Posted by candy on Tuesday, September 21, 2010 at 3:12pm. Yes, my NaOH is granular. Why 7ml of 10M HCl? Do I add 7ml of 10M HCl 1st slowly in ice bath, then slowly adjust the pH to 7 using 10M HCl? Then to dilute to 15ml in a graduated cylinder? Thanks Posted by candy on ...
Tuesday, September 21, 2010 at 4:47pm by candy

physics
A block of unknown mass is attached to a spring with a spring constant of 6.00 N/m and undergoes simple harmonic motion with an amplitude of 12.0 cm. When the block is halfway between its equilibrium position and the end point, its speed is measured to be 33.0 cm/s a)Calculate...
Monday, April 27, 2009 at 11:19am by Jessi

physical chemistry PLEASE HELP!!!
how do i calculate a ratio of oxidised to reduced cytochrome c Fe2+ to Fe3+ given E(mV) at 25 C and pH7 as 100 and absorbance at 550nm as 1.5 E is relative to standard hydrogen electrode i dont know how im supposed to calculate it from this data
Wednesday, February 17, 2010 at 11:40am by lucy

Chemistry
3) You make a solution by dissolving 3.4g Ba(OH)2 in enough water to make 450ml of salt solution. a. What is the molarity of the solution?
Tuesday, June 28, 2011 at 11:39am by Sasha

Chemistry
3) You make a solution by dissolving 3.4g Ba(OH)2 in enough water to make 450ml of salt solution. a. What is the molarity of the solution?
Tuesday, June 28, 2011 at 11:40am by Sasha

chemistry
What is the molarity of an HCl solution if 14.0mL HCl solution is titrated with 22.6mL of 0.155 M NaOH solution?
Saturday, February 9, 2013 at 2:04pm by Peter

Chemisty
What is the molarity of the hydrochloric acid solution used if 25mL of it reacted with excess calcium carbonate to produce 5.3g of calcium chloride? CaCo3(s) + 2HCl(aq)---> CaCl2(aq) + CO2(g) + H2O(l) I am really confused on even what this question is asking..any help would...
Sunday, November 20, 2011 at 8:22pm by Jenn

chemistry
1L of a buffer composed of acetic acid and sodium acetate has a pH of 4.3 (total molarity=0.0774) what is the capacity of 200mL of the buffer to survive an addition of HCl without changing by more than 0.4 pH units? i am so lost please help! i know you use the henderson ...
Tuesday, March 12, 2013 at 12:45pm by Ashley

chemistry
1L of a buffer composed of acetic acid and sodium acetate has a pH of 4.3 (total molarity=0.0774) what is the capacity of 200mL of the buffer to survive an addition of HCl without changing by more than 0.4 pH units? i am so lost please help! i know you use the henderson ...
Tuesday, March 12, 2013 at 6:25pm by Ashley

Chemistry
Magnesium fluoride dissolves in water to the extent of 8.0 10-2 g/L at 25C. Calculate the solubility of MgF2(s) in moles per liter, and calculate Ksp for MgF2 at 25C. I've been doing this and getting .086. Please help!
Wednesday, May 26, 2010 at 5:16pm by Kate

physics
really stuck, a 90 kg skier has 140 KJ of total mechanical energy when he is at a height of 120m above the bottom of the hill. calculate the skiers kinetic energy. calculate his speed?
Saturday, October 16, 2010 at 5:05pm by dave

physics
really stuck, a 90 kg skier has 140 KJ of total mechanical energy when he is at a height of 120m above the bottom of the hill. calculate the skiers kinetic energy. calculate his speed?
Monday, October 18, 2010 at 6:19pm by mitch

chemistry
Under an O2 pressure of 1.00 atm, 28.31 mL of O2 dissolves in 1.00 L H2O at 25 degrees. Determine the molarity of O2 in an aqueous solution at equilibrium with air at normal atmospheric pressure. The volume percent of O2 in air is 20.80 \%. (Have no idea how to go through with...
Saturday, February 20, 2010 at 6:43pm by david

chemistry
Under an O2 pressure of 1.00 atm, 28.31 mL of O2 dissolves in 1.00 L H2O at 25 degrees. Determine the molarity of O2 in an aqueous solution at equilibrium with air at normal atmospheric pressure. The volume percent of O2 in air is 20.80 \%. (Have no idea how to go through with...
Saturday, February 20, 2010 at 7:39pm by david

Physics
An elevator cable breaks when a 950 kg elevator is 23 m above a huge spring (k = 2.3105 N/m) at the bottom of the shaft. (a)Calculate the work done by gravity on the elevator before it hits the spring. (b) Calculate the speed of the elevator just before striking the spring. (...
Wednesday, November 17, 2010 at 3:12am by Sasha

Chemistry
Can someone check these answers for me THANK YOU! 1) Which of the following combinations would most increase the solubility of a gas in a liquid? is it increase the pressure and increase the temperature 2) The concepts of molarity and molality are like in that both: Express ...
Saturday, December 15, 2007 at 8:59pm by anonymous

health
The key to using a pedometer to meet the Physical Activity Guidelines for Americans is to _________. A. First set a time goal and then calculate how many steps are needed each day to reach that goal B. First set a time goal and then calculate how rigorous the steps need to be ...
Friday, October 5, 2012 at 12:11pm by Madison

Chemistry
Hi I need help with these following questions. I have all of the data needed. Calculate the enthalpy change of the reaction for each trial (in kJ) 3. Calculate the heat released by the reaction for each trial (in J): 2. Calculate the heat absorbed by the calorimeter for each ...
Sunday, November 17, 2013 at 8:08pm by Matt

Chemistry
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.065 moles of sulfuric acid is mixed with water to make 456 mililiter of solution, what is the molarity of H+? Answer in units of M.
Monday, October 11, 2010 at 5:22pm by May (PLEASE HELP)

chemistry
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.062 moles of sulfuric acid is mixed with water to make 200 mililiter of solution, what is the molarity of H+? Answer in units of M
Thursday, September 13, 2012 at 5:19pm by cheri

chemistry
If a student added 42.6 grams of sodium sulfite to 780.4 grams of water and determined that 3.40 grams of the new solution occupied 3.20ml, what is the weight percent, molality, and molarity of the solution produced?
Thursday, July 18, 2013 at 6:34pm by Sumaiyah

Chemistry
If the reaction Fe2N(s) + 3/2H2(g) -> 2Fe(s) +NH3(g) comes to equilibrium at a total pressure of 1 bar, analysis of the gas shows that at 700. and 800.K, PNH3/PH2=2.165 and 1.083 respectively, if only H2(g) was initially present in the gas phase and Fe2N(s) was in excess. a...
Tuesday, November 23, 2010 at 1:22am by Katie

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 (that is what was asked it never said total distance it said calculate distance traveled in...
Tuesday, July 31, 2012 at 10:34am by INDIANA to Reiny

Design of suitable pin size
Appreciate if someone can take the time to check my answers to the following question. If wrong, could you point me in the right direction. A round bar, 800 mm long, CSA 15 mm^2 experiences an applied tensile load of 6 kN and stretches elastically by 3 mm. a) Calculate the ...
Sunday, February 11, 2007 at 4:13am by BIGEYE

U.S. and Global Economics:Involving math
Just show me how to calculate it and I'll do the rest. I just don't understand how to calculate this problem. Thank you, An online store that has been successfully growing on its initial angel investment and revenues wants to invest $5 million to expand the business. The bank ...
Friday, November 15, 2013 at 11:06am by Mary

14
The key to using a pedometer to meet the Physical Activity Guidelines for Americans is to _________. A. First set a time goal and then calculate how many steps are needed each day to reach that goal B. First set a time goal and then calculate how rigorous the steps need to be ...
Sunday, March 4, 2012 at 8:16pm by desha

Chemistry
Consider a certain type of nucleus that has a half life of 32 min. Calculate the percent of original sample of nucleus remaining after 3.0 hours have passed? how would i calculate this???
Tuesday, March 4, 2008 at 5:28pm by Gabe

Chemistry
Magnesium fluoride dissolves in water to the extent of 8.0 10-2 g/L at 25C. Calculate the solubility of MgF2(s) in moles per liter, and calculate Ksp for MgF2 at 25C. I keep getting the same answer...please help!
Monday, May 9, 2011 at 8:25pm by Laura

chemistry
Rubidium crystalizes in the body centred cubic structure with an edge length of 560.5 pm.. a. calculate the radius (in pm) to 4 sig figures. b. calculate the density to 4 sig.fgures. thnks guys..
Sunday, December 4, 2011 at 7:17pm by amanda

science
A train accelerates uniformly in a straight line at 0.3m/s from from rest. Calculate the velocity 15 seconds after its depature. Calculate the time taken to reach 30km/h and the distance covered by the train.
Sunday, April 7, 2013 at 8:46am by leslie

Chemistry
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood. Luminol is so sensitive that it can detect blood that has been diluted 10,000 times. A basic solution...
Wednesday, February 11, 2009 at 7:22pm by Danielle

Chemistry
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood. Luminol is so sensitive that it can detect blood that has been diluted 10,000 times. A basic solution...
Wednesday, February 11, 2009 at 7:32pm by Danielle

Clocking Tectonic Plates
Explain how you could calculate the average speed of the Pacific Plate over the past five million years, then calculate the value? I tried searching the internet for this, I came up with nothing, and I just dont get this question.
Thursday, January 13, 2011 at 6:50pm by Anonymous

chemistry
What is the molarity of a solution when 3L of a 4M solution is mixed with 3L of a 6M solution?
Tuesday, March 3, 2009 at 7:29pm by lyne

chemistry please
if i want to find the molarity of a solution that is: 5mL of a 3.521 x 10^-5 M solution, and filled to the 50mL line with ethanol, would this be: (3.521 x 10^-5)(.04L ethanol)?
Sunday, February 1, 2009 at 8:25pm by samantha

Chemistry II
A total of 30.6 g of potassium hydrogen phthalate is needed to completely neutralize a 500.0 mL solution of sodium hydroxide. What is the molarity of the sodium hydroxide solution?
Wednesday, October 21, 2009 at 12:11pm by Mandy

chemistry
220 ml of an HCl solution that is 31.4% by mass is required to neutralize .50 gal of the chlorine solution. what is the molarity of the OH- of the clorine solution? chlorine solution is NaOCl in NaOH
Tuesday, April 19, 2011 at 1:30pm by Bob

chemistry
What is the molarity of each kind of ion in a solution of magnesium chloride that contains 86.0 g of magnesium chloride dissolved in enough water to make 2.37 L of solution? M Mg2+ M Cl-
Tuesday, May 1, 2012 at 2:10pm by kim

CHEMISTRY
If 33.7 ml of 0.210 M KOH is required to completely neutralize 27.0 ml of a HC2H3O2 solution, what is the molarity of the acetic acid solution? HC2H3O2(aq)+ KOH(aq)-->KC2H3O2(aq)+H2O(l)
Saturday, May 12, 2012 at 7:21pm by Michael

analytical
I have 5ml of 0.07 mol/l Hcl I want to increase the molarity to 1 mol/l by adding minimum volume of hcl 31.2% density 1.15 kg/l how much I have to add
Tuesday, May 14, 2013 at 1:40am by nebal

chemistry
What is the molarity of each kind of ion in a solution of magnesium chloride that contains 29.0 g of magnesium chloride dissolved in enough water to make 1.73 L of solution? MgCl2 Mg2+ + 2 Cl-
Tuesday, April 24, 2012 at 9:46pm by megan

chemistry
1. The mass spectrum can be observed for all forms: pos. ion, neg.ion, molecules, and atoms, can't it? 2. Is there a formular to calculate how many spectrum of the substances we need to observe? Please give me some examples, and calculation. 3. I knew the examples of H2S+, and...
Tuesday, December 29, 2009 at 11:59pm by Bun

Chemistry
Very small crystals composed of 1000 to 100,000 atoms, called quantum dots, are being investigated for use in electronic devices. (a) Calculate the mass in grams of a quantum dot consisting of 1.400 104 atoms of silicon. (b) Assuming that the silicon in the dot has a density ...
Tuesday, June 1, 2010 at 1:48am by Anita

physics
A long thin rod lies along the x-axis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters. 1. Calculate the total mass of the ...
Wednesday, February 12, 2014 at 1:45pm by Naya

Physic Help
Charge is distributed through an infinitely long cylinder of radius R in such a way that the charge density is proportional to the distance from the central axis: = A r, where A is a constant and is the density. (a) Calculate the total charge contained in a segment of the ...
Monday, February 18, 2013 at 11:00am by Lindsey

chemistry
how do you find the mass solute(g), GFM(g/mole), moles of solute, volume of solution, and molarity of solution (M), of CaSO(4)? *how would i solve this set by set? * what are the formulas?
Monday, March 29, 2010 at 10:27pm by kelly

CHM 152
An automobile antifreeze contains equal volumes of ethylene glycol (d=1.114 g/mL and FW = 62.07) and water (d=1.00 g/mL) at 25oC. The solution has a density of 1.06 g/mL. What is the molarity of ethylene glycol in the solution?
Tuesday, June 8, 2010 at 12:06am by Car

chemistry
I need help solving this question.. An aqueous solution of ethylene glycol (C2H6O2) IS 40% ethylene glycol by mass, and has a density of 1.05g/ml. what are the molarity, molality fraction of the solution?
Wednesday, July 7, 2010 at 10:20pm by Linda

Chemistry
Ammonia, NH3 is freely soluble in water, and has the value Kb=1.8x10^-5. If the pH of an ammonia solution is 11.4272, then what original concentration of NH3 (molarity) was used to make up the solution?
Tuesday, July 27, 2010 at 10:49pm by Sam

Chemistry
A solution contains .370 mol of isopropanol (C3H7OH) dissolved in 1.700 mol of water. A) What is the mole fraction of isopropanol? B) What is the mass percent of isopropanol? C)The molarity of isopropanol?
Monday, October 18, 2010 at 4:13pm by Natalie

Chemistry
A stock aqueous solution contains 348.29 grams of NaCl per 1.000L. 68.00mLs of water is added to 10.00mLs of the stock solution. What is the molarity of the dilution???
Wednesday, August 24, 2011 at 2:19am by Jessica

Chemistry
In the following acidbase neutralization reaction HNO3(aq)+ KOH(aq) ----KNO3(aq) + H2O (I) What is the molarity (M) of an HNO3 solution if 50.0 ml is needed to react with 25.0 ml of 0.150M KOH solution?
Friday, October 19, 2012 at 1:06pm by Tasha

chemistry
Physicain elects to re-hydrate the patient br intravenous(IV) administration of 2.0 L of 0.45% (w/v) of NaCl. 0.45%9w/v) = 0.45g/100ml A.How many grams of NaCl were given? B.How many moles of Nacl were given? C.What is the molarity of the NaCl solution?
Monday, May 13, 2013 at 2:26pm by Monica

GK or Dr.Bob222...Chemistry please help...
Please refer to the previous post Chemistry Help Please. Moles of S203^2- = (molarity)(volume): =(0.032400 mol/L)(0.053 litres S203^2-) = 0.03240 moles S203^2- Posted by DrBob222 on Wednesday, October 22, 2008 at 9:37pm in response to GK..please check...Chemistry Help Please I...
Thursday, October 23, 2008 at 6:30pm by Sara

Chemistry
How many moles of H2SO4 are needed to prepare 5.0 liters of 2.0M solution of H2SO4? a. 5.0 b. 10 c. 2.5 d. 20 Go back to the definition of molarity. M = #mols/L is the answer d If M = # mols/L, then L x M = #mols. 5.0L x 2.0M = 10 mols.
Monday, March 26, 2007 at 10:19pm by Kat

chemistry
Household hydrogen peroxide is an aqueous solution containing 3.0% hydrogen peroxide by mass. What is the molarity of this solution? (Assume a density of 1.01g/ml .)
Wednesday, November 17, 2010 at 11:50pm by Anonymous

Chemistry
A solution of HCL whose pH=2.010 was added to neautralize a 40.00 ml solution of KOH, the molarity of KOH is .2567 M. How many mls of HCl were required?
Monday, October 10, 2011 at 8:11pm by Anonymous

Chemistry
Suppose that 50.0mL of 0.240M sulfric acid requires 36.0mL of KOH solution to reach its endpoint. What is the molarity of the KOH solution?
Friday, April 27, 2012 at 4:43pm by Leonarda

chemistry
a 35.5 mL sample of an NaOH solution is needed to titrate a 2.08 g sample of pure benzoic acid (HC7H5O2)a solid. What is the molarity of the NaOH solution?
Wednesday, May 9, 2012 at 10:58pm by b

chemistry
If 35.7{\rm mL} of 0.205{\rm M} {\rm KOH} is required to completely neutralize 20.0{\rm mL} of a {\rm HC_2H_3O_2} solution, what is the molarity of the acetic acid solution? {\rm HC_2H_3O_2}(aq) + {\rm KOH}(aq) \to {\rm KC_2H_3O_2}(aq) + {\rm H}_{2}{\rm O}(l)
Monday, July 30, 2012 at 5:36am by Anonymous

chemisty
NaOH + HCl -> NaCl + H2O What is the molarity of a NaOH solution that required 31.6mL to neutralize 25.0mL of a 0.145 M HCl solution?
Wednesday, December 5, 2012 at 1:06am by Jo

Science-Chemistry
Methyl amine is a weak base with a pKb=3.35. Consider the titration of 30.0mL of .030M of Methyl amine with 0.025M HCl. a) Write the appropriate equation for the reaction. b) Calculate K for the reaction in part (a). c) Calculate pH of the initial methyl amine solution (0mL ...
Friday, April 19, 2013 at 11:44am by Joe

chemistry
25mL of tap-water is titrated with .00500 M EDTA. 7.95mL of EDTA is required for complete reaction, Whatis the molarity of that total water hardness in the 25mL sample
Tuesday, May 1, 2012 at 6:18pm by karla

chemistry
the mass number is used to calculate the number of-----------in one atom of an element. in order to calculate the number of neutrons you must subtract the ------from the-----------
Tuesday, October 7, 2008 at 11:33pm by jennifer

physics
Calculate the force with which the body will fall on u. Also calculate, the kinetic energy, when body will be at height 6 ft. from ground. (take g=9.8m/s, mass of body=62 kg..)
Friday, September 23, 2011 at 3:56am by Anonymous

Chemistry
A solution is prepared by mixing 8 mL of .2 M Fe(NO3)3, 10mL of .001 M NaSCN, and 7 mL of .1 M HNO3 a. calculate the concentration of Fe3+ in the solution b. calculate the SCN- in the solution
Sunday, February 20, 2011 at 9:56pm by Anonymous

Physics
A boat which travels 100 km (N), then 40 km (N), and finally 80 km (S). The entire trip takes 6.5 hours. A.) Calculate the total displacement of the boat B.) calculate the velocity of the boat
Saturday, February 2, 2013 at 7:15pm by Amanda

Physics
A 300 kg piano slides 4.4 m down a 30 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. (a) Calculate the magnitude of the force exerted by the man. (b) Calculate the work ...
Friday, March 21, 2014 at 9:05pm by Hope

Physics
A 300 kg piano slides 4.4 m down a 30 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40.(a) Calculate the magnitude of the force exerted by the man.(b) Calculate the work ...
Friday, March 21, 2014 at 9:17pm by Hope

Statistics
The data below represents six years of the harvest of oranges in millions of boxes and the price per 75 pound box. (a) Plot the data and calculate the regression line. Plot that line. (b)Calculate the coefficient of determination (c)What percent of the variation in price is ...
Sunday, December 9, 2012 at 2:39pm by Maria Elizabeth

uitm
Household hydrogen peroxide is an aqueous solution containing 3.0% hydrogen peroxide by mass. What is the molarity of this solution? (Assume a density of 1.01 g/mL.)
Saturday, July 27, 2013 at 11:43pm by jan

Chemistry Help!
the specific heat capacity of gold is .13 J/gC. Calculate the specific heat capacity of gold in cal/gC. Calculate the specific heat capacity of gold in J/molC. Calculate the amount of energy required in joules to heat 2.5 kg of water from 18.5C to 55.0C I think for these ...
Monday, May 31, 2010 at 11:03am by Sheena

Chemistry
the specific heat capacity of gold is .13 J/gC. Calculate the specific heat capacity of gold in cal/gC. Calculate the specific heat capacity of gold in J/molC. Calculate the amount of energy required in joules to heat 2.5 kg of water from 18.5C to 55.0C I think for these ...
Monday, May 31, 2010 at 4:55pm by Sheena

Chemistry
A volume of 40.0 of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the solution if 20.2 of 1.50M H2SO4 was needed? The equation is 2KOH(aq)+H2SO4(aq)--->K2SO4(aq)+2H2O(l)
Sunday, July 22, 2012 at 11:43pm by Lindsey

General Chemistry
Calculate the number of C atoms, H atoms, and O atoms, in 1.50 grams of glucose (C6H1206). I do not understand how to calculate this. Please explain and post the correct answers.
Monday, May 17, 2010 at 3:02pm by Kendra

chemistry
can someone please help me with this? i've been stuck on this one forever... A solution is made by mixing 25.0 mL of toluene C6H5CH3d=0867gmL with 135.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are...
Monday, October 4, 2010 at 12:53pm by Anonymous

chemistry
can someone help me with this please? i've been stuck on this one forever... A solution is made by mixing 25.0 mL of toluene C6H5CH3d=0867gmL with 135.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are...
Monday, October 4, 2010 at 12:54pm by Anonymous

Chemistry
Can someone please help me here? It's review for my test. Thanks! Calculate the expected pH of the buffer prepared in Part I of this lab. The Ka of acetic acid is 1.8 x 10-5 Calculate the expected pH when 10.0mL of 0.10M HCl is added to the buffer from question 3 Calculate the...
Tuesday, April 8, 2014 at 9:54am by Matt

Chemistry
2MnO4-(aq) +5 H2O2 (aq) + 6H+(aq) -> 5 O2(g) + 2 (Mn2+(aq) = 8H2O (l) If a 25.00 ml sample of hydro peroxide required 25.25 ml of .353 M KMNo4 solution to react with all the hydrogen perozide what was the molarity of the hydrogen peroxide solution?
Tuesday, June 7, 2011 at 7:31pm by Vinny

chemistry
I did an experiment with a sand sample which contains fine metallic aluminium and I wanted to measure how much of this metallic aluminium is in the sample. I used the NaOH solution in order to let react the aluminium and collect the H2. From the H2 amount I thought I could ...
Thursday, November 25, 2010 at 4:18am by Leny

Please help how do I calculate this
Calculate the Calorimeter Constant (Ccal) if 25.00 g of water at 51.50C was added to 25.00 g of water at 25.00 C with a resulting temperature of 35.00 C? (*remember the specific heat capacity of water (cwater) = 4.180 J/gC)
Tuesday, June 25, 2013 at 2:37pm by Mary

Pages: <<Prev | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | Next>>

Search
Members