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February 13, 2016

Search: is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase

Number of results: 35,346

AP Chemistry
Approximately how much water should be added to 10.0 mL of 12.4 M HCl so that it has the same pH as 0.90 M acetic acid (Ka = 1.8 10-5)?
February 16, 2014 by Debbie

Chemistry
What volume (mL) of .20 M HCL needs to be added to 1.23 L of .10 M acetic acid to reduce percent ionization to 1.00%?
March 2, 2015 by Molly

Accounting
a net loss of $50,000 in 2009 and net income of $250,000 in 2010. The increase in net income of $300,000 can be stated as 200% increase cannot be stated as a percentage can be stated as 0% can be stated as 100% increase
January 9, 2010 by Don

Chemisty
How many milliliters of 5.50 M HCl must be diluted to make 350. mL of a 0.500 M solution?
April 10, 2012 by Wyatt

chemistry
How many milliliters of 5.50 M HCl must be diluted to make 350. mL of a 0.500 M solution?
November 10, 2014 by Brendon

chemistry
How many milliliters of 4.50 M HCl must be diluted to make 400. mL of a 0.500 M solution?
November 10, 2014 by Cassie

Math>> Help!!
You complain that the hot tub our hotel suite is not enough. The hotel tells you that they will increase the temperature by 10% each hour. If the current temperature of the hot tub is 75 Fereneit Degrees, what will be the temperature of the hot tub after 3 hours, to the ...
April 16, 2013 by Jnr John

Chem
Use a chemical equation to help explain why the pH of an aqueous solution changes after HCl solution has been added This is what I got HCL + H2O = H30+ plus CL- Hope that makes since (those are a positive and negative signs at the right side of the equation) Tell if I'm right...
April 5, 2013 by meghan

chemistry
Finding out if the amount of heat produced depends on an increase in the concentration of Hcl
April 28, 2013 by Silence

chemistry
Finding out if the amount of heat produced depends on an increase in the concentration of Hcl
April 28, 2013 by Silence

finance
I need help bad. You have been running your small business, Crafts Boat Shop, for several years now and have been very successful. You have come to the point where you expect sales to increase next year and want to be sure that you have enough assets available to support ...
September 2, 2014 by karen

Chemistry
Consider the reaction: M + 2HCl MCl2 + H2 When 0.85 mol of the metal, M, reacted with an aqueous HCl solution (the HCl is in excess), the temperature of the solution rose because the reaction produced 6795 J of heat. What is ∆H in kJ per mol of M for this reaction? (...
May 4, 2015 by Jessica

CHEM
A cylinder with a movable piston contains 2.00g of helium, He, at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from ...
October 28, 2007 by K

physic
Hi! help me please, Thank you. A spherical steel ball bearing has a diameter of 2.540 cm at 23C. (a) What is the diameter when its temperature is raised to 94C? cm (b) What temperature change is required to increase its volume by 0.9%? I only need help on part b.Thank
December 1, 2009 by Chan

Chemistry
Determination of Ksp, ΔG, ΔH and ΔS for Ca(OH)2. *** Need help on problem #3 & #4 *** CALCULATIONS: 1. Calculate the average solubility of calcium hydroxide, Ca(OH)2, at each temperature. 2. Calculate the Ksp for Ca(OH)2 at each temperature. 3. Calculate the...
March 18, 2014 by Airin

Math Help please
You complain that the hot tub in your hotel suite is not enough. The hotel tells they will increase the temperature by 10% each hour. If the current temperature of the hot tub is 75 degrees Fahrenheit, what will be the temperature of the hot tub after three hours to the ...
April 17, 2013 by Seth

Chemistry
In a solution of copper(II) chloride, the following equilibrium exists: CuCl42-(aq) (dark green) + 4H2O(l) <--> Cu(H2O)42+(aq)(blue) +4 Cl-(aq) Predict the shift in the equilibrium and draw a graph of concentration versus time for relevant reactants to communicate the ...
November 28, 2010 by Mary

Basic Accounting
Complete an Income Statement, Statement of Owner's Equity, and Balance Sheet using the information provided below for Ryas Planning Services. Cash $21,500 Accounts Receivable17,500 Office Supplies 500 Equipment 15,000 Accounts Payable...
July 7, 2011 by MaS

chemistry
What volume of 4.50M HCl can be made by mixing 5.65M HCl with 250 mL of 3.55M HCl?
July 24, 2010 by casey

science
How many ml of concetrated HCl are required to make 2 liters of 3N HCl from concentrated HCl that is 37% w/v and has a specific gravity of 1.2. H=1 Cl=35.5
September 7, 2010 by j

Chemistry
Na₂CO₃ (s) + 2HCL (ag) → 2NaCl (ag) + CO₂ + H₂O (l) If 4.25g of sodium carbonate is reacted completely with excess hydrochloric acid as 3M HCl, how many mL of HCl would be consumed? Note: Assume 3M HCl contains 3.00 moles of HCl per liter of ...
April 30, 2012 by Shelby

math
you complain that the hot tub in your hotel suite is not enough. the hotel tells you that they will increase the temperature by 10% each hour. If the temperature of the hot tub is 75%F, what will be the temperature of the hot tub after 3 hours, to the nearest tenth of a degree?
April 27, 2013 by Jeconiah. please a needy help!!!

chemistry
HCl is titrated with NaOH. When doing the titration, some of the NaOH splashed onto the inside surface of the Erlenmyer flask, and you forgot to rinse it into your sample. Would the systematic error be falsely high, low, or unaffected and why? Thanks. As I understand the ...
September 17, 2006 by bria

Science
A piece of copper at 90C is added 2.200 KG of water at 15C inside an aluminum calorimeter that has a mass of .100 KG the final temperature of the copper water and calorimeter is 25C what is the mass of the copper piece
March 2, 2015 by Michaela

Chemistry***
A mixture containing 19.8 moles of H2 and 7.2 mole of I2 was allowed to reach equilibrium in a 5 L closed vessel at ToC according to the equation: H2 (g) + I2 (g) 2HI (g) At equilibrium, 14 moles of H2 was present. The equilibrium constant for this reaction is denoted as Kc(1...
December 30, 2014 by plasma membrane

Economics
You own four firms that produce different products. The following table summarizes the conditions in each firm. After calculating the missing numbers for each firm, make one of the following four decisions regarding operations in each firm, and explain why a particular ...
August 25, 2008 by mat

chem
another calorimetry experiment is performed in which a 500. gram peice of gray metal at 67 degrees celsius is added to 493 grams of water. the water's temperature, originally at 17 degrees celsius, changes to 22 degrees celsius. What is the specific heat of the gray metal? I ...
April 24, 2008 by miley

Accounting
At the beginning of April, Owl Corporation has a balance of $12,000 in the Retained Earnings account. During the month of April, Owl had the following external transactions. 1. Issue common stock for cash, $10,000. 2. Provide services to customers on account, $7,500. 3. ...
April 13, 2012 by John

Chemistry
1) How many drops of 12M HCl would you add to 1.00 L of 0.100 M HC2H3O2 to make [C2H3O2-] = 1.0 x 10^-4 M? Assume that 1 drop = 0.050 mL and that the volume of the solution remains 1.00 L after the 12 M HCl is diluted. [Hint: What must be the [H3O+] in the solution?] 2. What ...
August 10, 2009 by Chem

Chemistry
A buffer contains 5.00 M acetic acid and 5.00 M acetate anion. Gaseous HCl (0.010 mole) is added to 1.00 L of this buffer solution (the total volume does not change). For this buffer solution, the initial pH is_______and the final pH after the addition of the HCl gas is_______...
May 2, 2010 by Ivana

Biochemistry
Calculate the pH that would result if 0.40mL of 1.50 M HCl is added to 12.0 mL of a 0.065 M solution of the fully deprotonated form of the tripeptide glu-asn-leu. I know I'm supposed to do an ICE table... and the equation will look like this initially: deprotonated + HCl ---&...
January 17, 2009 by Andrew

urgent help chemistry!!
2H2 +O2 ---> 2H20 A container at a o degrees celcius is filled with a mixture of oxygen and hydrogen. The fastest way to establish an equilibrium is.. 1. add more H2 2. do nothing, equilibrium will occur 3. increase the temperature 4. increase surface area. which is correct?
February 14, 2011 by Anonymous

Chemistry
If 5.00 mL of HCl require 4.59 mL of 0.9581 M NaOH to just consume the HCl, what is the concentration of the HCl?
February 22, 2010 by Caryn

chemistry
If 5.00 mL of HCl require 4.03 mL of 0.9581 M NaOH to just consume the HCl, what is the concentration of the HCl?
July 25, 2010 by Ellen

chemistry
calculate kole fraction of hcl in solution of hcl contaning 24.8% of hcl by mass
August 28, 2015 by dipak

Science
what is the required amount of con hcl needed to prepare 100ml of w/v dilute Hcl? strenth of Hcl 36.5 w/w and is specific gravity is 1.17
October 26, 2015 by M hari Dhas

Thermodynamics
An insulated rigid tank contains 1.5 kg of helium at 30∘C and 500 kPa. A paddle wheel with a power rating of 0.1 kW is operated within the tank for 30 minutes. Cvof helium = 3.12 KJ/Kg.K Problem 7A. Calculate the net work done by helium, in kJ. Enter the number with ...
October 17, 2014 by Phy

chem
The pH of saturated Sr(OH)2 is found to be 13.12. A 15.0ml sample of saturated Sr(OH)2 is diluted to 250.0ml in a volumetric flask. A 15.0ml sample of the diluted Sr(OH)2 is transferred to a beaker, and some water is added. The resulting solution requires 29.3ml of a HCl ...
April 2, 2009 by tomi

Physics
55) A 200-g block of copper at a temperature of 90 C is dropped into 400g of water at 27 C. The water is contained in a 300-g glass container. What is the final temperature of the mixture?
November 30, 2010 by Y0gi

physics
How much heat ( In calories)is needed to warm 200 grams of water from an initial temperature of 24 degrees celsits to a final temperature of 84 degrees celsuis
September 24, 2013 by teresa

CORRECTED ECONOMICS ?
You own four firms that produce different products. The following table summarizes the conditions in each firm. After calculating the missing numbers for each firm, make one of the following four decisions regarding operations in each firm, and explain why a particular ...
August 25, 2008 by mat

college econ
You own four firms that produce different products. The following table summarizes the conditions in each firm. After calculating the missing numbers for each firm, make one of the following four decisions regarding operations in each firm, and explain why a particular ...
August 25, 2008 by mat

science
Hey, holidays is over. Time to get back to work. whats the answer to this one find the concentration of hcl in g hcl/kg Naoh + Hcl---> b +c 2.991 mol 25.00mL Density=0.952g/ml also Hcl=36.46g/mol I got approx 4.58 x 10^3 g/mol of the top of my head
September 1, 2009 by Jim_R

Chemistry
What is the pH of a solution in which 25 mL of .10 M NaOH is added to 15 mL of .10 M HCl? I have calculated the amount of moles of each, but I'm not really sure where to go from there. Thanks!
April 11, 2010 by Hannah

Chemistry
What would happen to the color of a dilute solution containing FeCL4 if you added concentrated HCl?
April 26, 2010 by Christina

chemistry
AQUEOUS SODIUM HYDROXIDE IS ADDED TO SAMPLE X AND IS WARMED A GAS EVOLVES HCL WHAT IS THE EQUATION
May 12, 2011 by Anonymous

Chemistry
What mass of NaOH(s) must be added to 300 mL of HCl 0.25 M in order to completely neutralize this acid?
May 11, 2012 by Katie

Chemistry
Calculate the change in pH if 10mL of 0.1M HCl is added to the buffer made by mixing 25 mL of 1.0 M CH3COOH and 25 mL of 0.5 M CH3COONa.
January 19, 2015 by Lyca

College Chemistry
A 50.0 mL sample of 6.0 M HCL is dulited to 200.0 mL. What is the new concentration of the acid?
December 8, 2010 by Sa ndra

Chemistry
A student mixes 45.0 ml of .150 M HCL with 30.0 ml of .200 M NaOH. What is the pH of the resulting solution?
February 10, 2012 by Juliano

Chem
what is the pH of solution made by mixing 100 mL of 0.030M HCL with 200 mL water?
September 16, 2012 by John

chemistry
A titration was performed on 50.0 ml of .250 M NaOH. After the addition of 71.4 ml of HCl,the phenolphthalein indicator changed from pink to colorless. What was the concentration of the HCl? im not sure how to figure this one out but here goes 200*.250*1000=50000 1000*121.4=...
March 22, 2007 by unknown

Chemistry
50mL of 0.1M HCl is mixed with 50mL of 0.1NaOH. delta T = 3^oC. Calculate the enthalpy of neutralization per mole of HCl. assume the specific heat capcity of the solution is 4.18J/g/C and density=1.0g/mL. I tried it but got the wrong answer. What I did was I calculated the ...
August 10, 2007 by Vic

Chemistry multiple choice
During todays experiment we will produce hydrogen gas (H2) using zinc metal (Zn(s)) and hydrochloric acid (HCl). Which is a balanced net ionic equation illustrating this process? A. Zn (s) + 2 HCl (aq) --> Zn2+ (aq) + H2 (g) + 2 Cl- (aq) B. Zn (s) + 2 H+ (aq) --> Zn2...
December 1, 2010 by Nana

chemistry
"Stomach acid" is hydrochloric acid. A sample of gastric juice having a volume of 6.68 mL required 13.90 mL of 0.0161 M KOH solution for neutralization in a titration. What was the molar concentration of HCl in this fluid? C(HCl) = If we assume a density of 1.00 g mL-1 for the...
June 14, 2015 by walter

chemistry
60.5 grams of iron at an initial temperature of 87.5 degrees celsius are added to 125 grams of water at an initial temperature of 26.7 degrees celsius. calculate the final temperature of the mixture.
October 6, 2010 by alexja

chemistry
you add 13.7g HCL to water and make 500 mL solution. what will the solutions osmotic pressure be?
April 27, 2012 by Nicolette

Chemistry
Calculate the Ph and POH of an aqueous soltuion that is 0.500 M in HCl(aq) and 0.085 M in HBr (aq) at 25 degrees C.
February 20, 2014 by Help

College Chemistry
2.50 mL of ethyl acetate and 2.50 mL of distilled water are added to the 5.00 mL of 3 Molar HCl and the mixture is allowed to sit for a week. At the end of this time, 28.30 mL of 1.000 Molar NaOH was needed to titrate the solution. (The HCl was the same as used in 1a. This ...
February 20, 2011 by Tichele

Chemistry
If 50.00mL of 1.10M NaOH is added to 25.00mL of 1.86M HCl, with both solutions originally at 24.70 degrees Celsius, what will be the final solution temperature? (Assume that no heat is lost to the surrounding air and that the solution produced in the neutralization reaction ...
October 5, 2012 by Tasnim

science
A copper calorimeter of mass 150g, was half filled with water of mass 300g and temperature 0 degrees celcius. 5g of ice at 0 degrees celcius was added to the content, later some quanity of steam was passed into the mixture and the temperature rose by 20 degrees celcius. ...
March 2, 2014 by Tomex

chemistry
What is the pH of 500 mL of water that had 0.00150 grams of NaOH added to it? The units are pH units with an error interval of 0.1 units. 0.00150 divided by 40NaOH 3.75e-5 divided that by 500= 7.5e-8 -log7.5e-8 =7.12 im lost on the last step
March 21, 2015 by danny

Phyics
Three moles of an ideal monatomic gas are at a temperature of 396 K. Then 2438 J of heat is added to the gas, and 897 J of work is done on it. What is the final temperature of the gas?
November 19, 2013 by Carl

Physics
Three moles of an ideal monatomic gas are at a temperature of 396 K. Then 2438 J of heat is added to the gas, and 897 J of work is done on it. What is the final temperature of the gas?
November 19, 2013 by Carl

Physics
Three moles of an ideal monatomic gas are at a temperature of 396 K. Then 2438 J of heat is added to the gas, and 897 J of work is done on it. What is the final temperature of the gas?
November 20, 2013 by Help Please

Physics
Three moles of an ideal monoatomic gas are at a temperature of 345 K. Then, 2917 J of heat are added to the gas, and 1140 J of work are done on it. What is the final temperature of the gas?
April 21, 2015 by Adwait

Science
This has already been posted, however the provided answer does not make sense. Anyone have additional insight for this one? An excess of aluminum metal is added to 200.0 mL of 0.025 M solution of CuCl2, reducing the Cu+2 ions to metallic Cu. If the temperature of the solution ...
January 4, 2016 by Chem Help

chemistry
Concentrated HCL acid is 38% by weight of HCL and has a density of 1.19 g/ml. What is the morality of HCL?
September 25, 2011 by Anonymous

Chemistry, acids and bases
(a) Find pH and pOH of 1.0 M solution of sodium benzoate, NaC6H5COO. (Ka of benzoic acid is 6.2x10^-5) (b) Calculate pH after 0.205 moles per liter of HCl was added (assume volume does not change (c) Calculate pH after 1.0 moles per liter of HCl was added (assume volume does ...
May 6, 2008 by Marissa

chemistry
Crushed ice, at -25 digrees was heated using a bunsen burner. The temperature was recorded over a period of 16 minutes. Between 5 and 9 minutes there is no increase in temperature. What change of state is taking place?
October 21, 2010 by Anonymous

6th grade math
In general, the air temperature decreases 12F for every 4000 feet increase in altitude. If a hiker climbs 3000 feet, by how much can she expect the temperature to decrease?
December 4, 2011 by Kate

chemistry
Sulfur dioxide ( SO2 ) is a gas that causes acid rain . At the disposal of the fumes found 24 L found in the SO2 gas pressure of 200 torr . If the pressure is changed to 500 torr at a constant temperature , what is the volume of SO2 gas now ?
January 25, 2016 by bruge

chemistry
describe how the changes would affect each of the following chemical equilibra involving gases.. 2NO2(arows facing both direction) N204+HEAT 1.THE TEMPERATURE IS INCREASE 2.THE PRESSURE IS DECREASED 3.THE CONCENTRATION OF NO2 is increase 4.THE CONCENTRATION OF N2O4 IS DECRESED
May 8, 2010 by CILLA

Chemistry
You mix 45 ml of .20M HCl with 45 ml of .20M KOH in a calorimeter. The temperature of both reactions before mixing is 21.5oC. The temperature rises for the mixture to 22.7oC after mixing. What is the enthalpy change per mole of water produced?
July 22, 2015 by Jessica

Chemistry
Pure water boils at 100C (212F). When a substance is added to the water the boiling point increases due to what is referred to as the boiling point elevation. (a) What is the molecular mass of sucrose (C₁₂H₂₂O₁₁)? (b) If you add 100 g of ...
March 18, 2012 by Hannah

Chemistry
You are preparing 500 mL of a 0.300 M acetate buffer at pH 4.60 using only sodium acetate, 3.00 M HCl, 3.00 M NaOH, and water. Calculate the quantities needed for each of the following steps in the buffer preparation. 1. Add sodium acetate to ~400 mL of water in a large beaker...
February 28, 2012 by Unknown

chemistry
Sulfur dioxide ( SO2 ) is a gas that causes acid rain . At the disposal of the fumes found 24 L found in the SO2 gas pressure of 200 torr . If the pressure is changed to 500 torr at a constant temperature , the volume of SO2 gas berapakan now ?
January 25, 2016 by bruge

math
how does the no. of regions increase when another chord is added to the circle?
March 20, 2013 by esha

Algebra
x: 0, 2, 4, 6 ,8 y: 1, 49, 2401, 117,649 How do the y-values in the table grow? A. The y-values increase by a factor of 49 for each x increase of 1. B. The y-values increase by 49 for each x increase of 1. C. The y-values increase by a factor of 7 for each x increase of 1. D. ...
July 6, 2014 by Emma

chemistry
25 ml HCl x 1L/1000mL x .200HCl/1L = .005 mol HCl. Using the balanced equation from this, how many moles of NaOh will you need to completely neutralize the HCl?
November 10, 2010 by Zac

Chemistry
Can someone please tell me if I did this correctly? Calculate the molarity of the HCl from the volumes of acid and base and the molarity of the NaOH. Use the following equation: (molarity of acid)x(volume of acid)=(molarity of base)x(volume of added base) equivalance point=...
February 20, 2008 by Brad

Math
Please tell me if the answers I posted are correct with the questions given. I am terrible at math. A certain Metropolitan area is building a new Performing Arts Center with two auditoriums to be used as concert venues. Budget: $89,200,000 for construction costs $5,300,000 for...
November 5, 2009 by newcomb

Physics
A simple pendulum 1.50 m in length has a 500-g putty ball as an end bob. The pendulum is pulled aside 60 from the vertical and given an initial tangential speed of 1.20 m/s. At the bottom of the arc path, the bob hits and sticks to a 200-g putty ball sitting on a tee. (a) ...
June 20, 2012 by Tracy

Chemistry
In the reaction: Protection of 1-Phenylethanol by 3,4-Dihydro-2H-pyran, 1-phenylethanol, 3,4-Dihydro-2H-pyran and anhydrous ether were added first and stirred in ice-water bath before acid catalyst p-toluenesulfonic acid monohydrate was added. The reaction was kept at 0 deg ...
September 4, 2010 by Alan

Science
Which of the following is a way to improve the efficiency of a heat engine? increase Qh reduce Qh reduce Wnet increase Qc A What are the energies associated with atomic motion called? kinetic energy potential energy bond energy internal energy D A 0.10 kg piece of copper at an...
January 23, 2012 by Lena

Chemistry
A 100.0mL solution containing aqueous HCl and HBr was titrated with 0.1290M NaOH. The volume of base required to neutralize the acid was 47.56mL. Aqueous AgNO3 was then added to precipitate the Cl- and Br- ions as AgCl and AgBr. The mass of the silver halides obtained was 0....
November 19, 2012 by Melia

Chemistry
Of the following (a through e), which increase and which decrease, as the strength of the attractive noncovalent interactions increases? Explain. a) Deviations from the ideal ga law b) Boiling Temperature c) Sublimation temperature d) Vapor Pressure e) The energy it takes to ...
January 31, 2016 by Anonymous

Chemistry
Calculate the molarity of the HCl from the volumes of acid and base and the molarity of the NaOH. Use the following equation: (molarity of acid)x(volume of acid)=(molarity of base)x(volume of added base) equivalance point=number of mL of base to an acid 1mL=0.001L HCl volume=...
February 20, 2008 by Brad

Food Chemistry
Calculate the amounts and pH values for preparing the following acetic acid/acetate buffer solution. 1.) In the first step, If you plan to prepare a 2.00 M sodium acetate in 200.0 mL distilled water, how many grams of sodium acetate should be added in water? 2.) B. In the 2nd ...
April 29, 2010 by Lauren

Physics
For the situation: "A moving crate slides to a halt on a rough surface" Does temperature increase, decrease, or not change? Are work and heat positive, negative, or zero? Does thermal energy increase, decrease, or not change? My answer key says temperature increases, work is ...
November 16, 2014 by Courtney

chemistry
Assuming that the volumes are additive, what volume of water must be added to 35.0mL of 23.0 M HCl to make a solution which is 3.00 M?
April 13, 2011 by Denise

Biochemistry
Which of the following is the correct pH of a 211.7 mL solution (final volume) of pure water after 52.3 mL of 1.00 mM HCl was added?
September 17, 2013 by Rich

ASU
How much MnO2(s) should be added to excess HCl(aq) to obtain 215 mL of Cl2(g) at 25 C and 705 Torr?
October 15, 2013 by Kara

Chemistry
If 5ml of 10M HCl was added to 1 litre of 0.4M 3-(N-morpholino) propane sulfonic acid what would be the resulting pH?
September 5, 2015 by Katie

chemistry
What is the pH of a solution prepared to contain 155 grams of HCl in 200.0 mL? Can you tell me how to do it? I can't remember how...
December 16, 2010 by Claudia

math
Oakwood Plowing Company purchased two new plows for the upcoming winter. In 200 days, Oakwood must make a single payment of $23,200 to pay for the plows. As of today, Oakwood has $22,500. If Oakwood puts the money in a bank today, what rate of interest will it need to pay off ...
June 13, 2012 by Anonymous

Chemistry
What is the concentration of a solution prepared by diluting 25.0 mL of HCL 0.750 mol/L to a final volume of 500.mL?
April 30, 2008 by April

Chemistry
What is the concentration of a solution prepared by diluting 25.0 mL of HCl 0.750 mol/L to a final volume of 500. mL?
May 2, 2008 by Kate

chemistry
What formula do I use to figure how many mL of 6.00 M of HCl must be diluted to make 600 mL of a 0.500 M solution?
July 25, 2010 by Norma

chemistry
2. If you used 0.500 g of Mg and an excess of HCL, how much hydrogen gas should be produced at STP?
April 5, 2011 by Anonymous

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