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January 30, 2015

Search: 12. How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7 g Fe?

Number of results: 19,022

physics
A small cork with an excess charge of +5.0 ¦ĚC is placed 0.14 m from another cork, which carries a charge of −3.2 ¦ĚC. What is the magnitude of the electric force between the corks? The Coulomb constant is 8.98755 ˇÁ 109 N ˇ¤ m2/C2. Answer in units of N
April 19, 2012 by jenny

physics
A ball is thrown from the top of a building with an initial velocity of 30m/s straight upward, at an initial height of 50m above the ground. The ball just misses the edge of the roof on is way down and hits the ground. Determine: a) time needed for ball to reach max height. B)...
February 16, 2011 by mark matat

chemistry
25.0 g of sodium carbonate is combined with an excess of hdrochloric acid. in the end 5.70 g of sodium chloride is isolated. what is the percent yield of sodium chloride
November 15, 2011 by Anonymous

chemistry
You are given 28.0 of aluminum and 33.0 of chlorine gas. Part A If you had excess chlorine, how many moles ofof aluminum chloride could be produced from 28.0 of aluminum?
September 17, 2012 by teresa

economics
Suppose that the reserve ratio is .25, ad that a bank has actual reserves of $15,000, loans of $40,000, and demand deposits of $50,000. Excess reserves are $
August 18, 2014 by Harold

Chemistry
An excess of aqueous AgNO3 reacts with 24.5 mL of 5 M K2CrO4(aq) to form a precipitate. What is the precipitate? Answer: Ag2CrO4 What mass of precipitate is formed? Answer in units of g.
March 23, 2011 by Mary

Chemistry
Calculate how much acetylene (C2H2) can be produced from 358 g of H20 and an excess of CaC2 if the perfect yield for this reaction is 94.5% CaC2+H2)-> C2H2+C2H2+CA(OH)2
July 20, 2013 by Sara

Chemisry
6M HCl + 1M NaOH => NaCl + H2O If I'm understanding this correctly, all of the NaOH is used up because the molarity is 1 where the HCl's is 6 this leaves excess HCl correct?
August 26, 2013 by Jenna

Math
Can I get some help with this question please? Calculating break-even. Jasmine Gonzales, administrative director of Small Imaging Center, has been asked by the practice members to see if it is feasible to add more staff to support the practice’s mammography service, which ...
August 11, 2013 by Faith

medicine
how can i solve this?prepare 150ml of a 7.5%dextrose sol.you have D5%W and D10%W. how much of each sol. is needed? I assume the 7.5 dextrose is going to be on a w/w basis also. This is really simple, no algebra needed. Since 7.5 is halfway between 5 and 10, use equal volumes ...
December 2, 2006 by rimple

chemistry
i need to know if I am in the right tract please let me know...I am calulating the molality of the following exercise so I could be able to apply the formula T=Kf * molality calculate the freezing point of a solution containin 12.2 grams of benzoic acid, dissolved in 250 grams...
October 27, 2008 by Joshua

Chemistry
Are these correct? 1. What is the formula mass for Mg(ClO3)2? mg=24.31 cl=35.45 x 2 = 70.9 o=16 x 6 = 96 24.31+70.9+96= Answer:191.2 amu 2.How many molecules of CO2 are in 4.5 moles of CO2? 4.5 x 6.022 x10^23=Answer 2.7x10^24 3.How many grams are in 9.21 moles of H2CO3? h=1....
October 25, 2009 by Mattt K

Economics
6. The idea that countries should produce and sell goods that they produce most effectively and efficiently, and buy goods that other countries produce most effectively and efficiently, is known as A. absolute advantage theory. C. efficiency balanced trade. B. free trade. D. ...
January 23, 2012 by Heather

science
Calculate the buoyant force in air on a kilogram of gold (whose density is about 19 grams per cubic centimeter). The density of air is 1.3 ✕ 10-3 grams per cubic centimeter. Remember that the buoyant force is equal to the weight of a volume of air that is equal to the ...
August 2, 2014 by Zoey

Economics
In an economy where a unit of labour can produce either 1 unit of x or 4 units of y (or any linear combination of the two) and a unit of capital can produce either 4 units of x or 1 unit of y (or any linear combination of the two). There are 100 units of each means of ...
July 27, 2006 by Zann

Chemistry
Hydrogen Fluoride is produced from the reaction of calicum fluoride are reacted with an excess of sulfuric acid. How much hydrogen fluoride is formed if the percent yield is 93.0%?
February 28, 2011 by Toni Jones

Chemistry
A saturated solution of Mg(OH)2 is prepared having a large excess of Mg(OH)2. Sn(NO3)2 is added to the solution. Ksp = 1.9 x 10^-11 for Mg(OH)2 and Ksp = 6.0x10^-26 for Sn(OH)2. What [Sn2+] is required so that the [Mg2+] in solution will be 0.15 M?
March 26, 2011 by Nikki

fifth grade
how many grams in a lb.
September 30, 2008 by Samantha

MATH
How many grams are there in 2 1/4 Kilograms?
October 4, 2008 by Rikki

chemistry
How many moles is 66.02 grams of Fe?
March 11, 2009 by chris

Chemistry
How many grams are in a milliliter?
September 21, 2009 by Josh

chemistry
3.47*10^23 mass in grams
June 9, 2010 by Kyree

Math
14 grams=__kg
October 12, 2010 by Kim

chemistry
number of 32.0 grams Br^2
July 11, 2011 by tresha

ap chemistry
How many grams of ammonium
November 3, 2011 by jenell

chemistry
how many grams are in 49.0 mL of NaOH
March 13, 2012 by jasmine

geometry
Find (5/8) of 1 kg, in grams.
March 18, 2012 by supastarrr

Chemistry
How many grams of Ca(OH)2 are in 6.5 moles?
June 11, 2013 by Shakena

Science
How many grams are in 3CuCl2
November 7, 2013 by Ryan

Science
How many grams are in 3CuCl2
November 7, 2013 by Ryan

CHEM
Which of the following reactions should be fast at room temperature? Which would be slow? Explain A. KCl+AgNO3->KNO3+AgCl B. H2(g)+Cl2(g)->2 HCL(g) I would assume that B would react faster because it has all gases.??
January 18, 2012 by john

chemistry
the chemical equation of nicotinic acid is C5H4NCOOH + NaOH --> C5H4NCOONa + H2O i need to calculate the intial molar concentration of this acid, based on the ratio in which the acid and base react. Please help i cant figure it out,
January 14, 2013 by lisa

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 ...
August 18, 2009 by Arthur

chemistry
I have posted this once and still cannot get the correct answer. Determine the mass of carbon monoxide that is produced when 45.6 of methane, CH4, react with 73.2 g of oxygen , O2. The products are carbon monoxide and water vapour.
August 3, 2010 by Kelsey

chemistry
What volume (in Liters) of oxygen must react to form 17.0L of carbon dioxide according to the following balanced equation: 2CO(g) + O2(g) --> 2CO2(g) 17.0 L CO2 x (1 moles O2/2 moles CO2) = 17.0 x (1/2) = 8.5 L did i do this problem correctly
October 17, 2010 by christine

Intro to chemistry
Determine the volume of 2.3 M H3PO4 that can completely react with? 340 mLs of a 5.1 M solution of NaOH according to the reaction: 3 NaOH + H3PO4 --> Na3PO4 + 3 H2O stuck on a homework problem..pls help!
November 15, 2010 by tc

Chemistry
Which one of the following pairs of reactants would react together in a Lewis Acid/Lewis Base reaction? a. KOH and HNO2 b. NaOH and HCl c. CH3COOH and HF d. Ag+ and NH3 e. HClO and NH3
February 27, 2011 by Brian

Chemistry
Help me please wether i d0ne it right,what is the mass of calcium carbonate is required to react with sulfur dioxide produced by burning 1000 kgs of coal that contain 5% sulfur by mass?tnx
April 28, 2011 by joy

CHEMISTRY
Hydrogen gas and iodine gas react via the equation, H2 + I2 <--> 2HI, and K=76 at 600K. If 0.05 mole of HI is placed in a flask at 600K, what are the equilibrium concentrations of HI, I2, H2? I am very lost at where to even start with this problem
March 18, 2012 by Kristen

science
why is it needed?
October 5, 2007 by alfjalkf

math
help needed
July 27, 2011 by sober

chemistry
Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 2.46 moles of CO2 react completely? moles
January 20, 2009 by bob

chem
What would be the reaction between Mn2+ and NH3? is it Mn(NH3)? and would this solution react with HNO3, considering it would already have NO3 in it?
November 1, 2010 by nicole

Chemistry
A 0.327 g sample of a mixture of NaOH(s) and NaCl(s) requires 31.5 mL of 0.150 M HCl(aq) to react with all the NaOH(s). What is the mass percentage of the NaOH(s) in the mixture?
November 14, 2014 by Lexie

Business law
Grocery, Inc., is a retail grocery store chain based in Any State, U.S.A. and has stores throughout the United States. Grocery, Inc. has written contracts with many different vendors to purchase the products they sell in their stores. Vendors range from individuals to ...
June 17, 2012 by Cho Ramirez

Chemistry
If 32.0 mL lead(II) nitrate solution reacts completely with excess sodium iodide solution to yield 0.545 g precipitate, what is the molarity of lead(II) ion in the original solution?
September 15, 2011 by Hel P.

Physics
A 9 kg lead brick falls from a height of 1.8 m. a) Find the momentum as it reaches the ground. b) What impulse is needed to bring the brick to rest? c) The brick falls onto a carpet 2.0 cm thick. Assuming the force stopping it is constant, find the average force the carpet ...
November 7, 2007 by Jayd

Chemistry
Using the balanced reaction, enter the formula, charge(if any), and state of the species (exclude H2O) in solution if Li3PO4(aq) reactant is present in stoichiometric excess. Separate your answers by comma. CrBr3(aq) + Li3PO4(aq) → CrPO4(s) + 3LiBr(aq)
February 18, 2010 by Larry

Chemistry
Using the balanced reaction, enter the formula, charge(if any), and state of the species (exclude H2O) in solution if ZnCl2(aq) reactant is present in stoichiometric excess. Separate your answers by comma. ZnCl2(aq) + K2CO3(aq) → ZnCO3(s) + 2KCl(aq)
February 18, 2010 by Josh

physics
A major-league pitcher can throw a ball in excess of 36.2 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches a catcher who is 17.0 m away from the point of release? I got -1.08 for the answer but my book is saying its wrong! ...
September 23, 2012 by Shannon

chemistry
A 1.252g sample containing iron dissolved and converted to Fe followed by ADDITION OF 25ML OF 0..01m K2CR2 07. THE EXCESS K2CR207 REQUIRED 6.85ML OF 0.015m SN2+. Find the percentage fe3 04 fw 213g/mol in the sample. Who helps me
December 11, 2012 by Fai

Chemistry
I posted this question a bit ago and received some help..but need more.. thanks Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been ...
April 12, 2007 by Julia

Chemistry-Repost for DrBob222
A sample of C60O3 decomposes with an activation energy of 50 kg/mol, an Arrehnius pre-factor of 2e10 s-1 and a k value of .04 s-1. How long does it take for a 25 mg sample at 25 degrees C to produce 10 mg. Your response was is that C60O<suh>3 or what? And I thought ...
March 21, 2014 by Anonymous

chemistry
Am doing a lab report on the determination of the product of a redox reaction: the reaction of bromate and hydroxylammonium ions. here is the lab Experiment: In this experiment you will determine the equation of a redox reaction by the use of experimental data. This is a ...
October 26, 2010 by khela

Chemistry
Aluminum and chlorine gas react together to make Aluminum chloride. What is the limiting reactant if 20.0g of Al and 30.0g of Cl2 are used?how much aluminum chloride was formed?
November 10, 2010 by Linie

HELPP !!
Copper(I) ions in aqueous solution react with NH3 according to Cu^+ + 2NH3 --> Cu(NH3)2^+ Kf=6.3x10^10 Calculate the solubility (in g/L) of CuBr (Ksp=6.3x10^-9) in 0.81 M NH3.
May 10, 2012 by HELPP !

Chemistry
0.300 moles of bromine gas (Br2) and 0.500 moles of chlorine gas (Cl2) react to for tribromochlorine (Br3Cl). how many moles of this product will form ?
August 11, 2013 by kate

statistics
A researcher wishes to estimate with 95% confidence the proportion of adults who have high speed internet access. Her estimate must be accurate within 4% of the true proportion. 1. Find the minimum sample size needed using a prior study that found that 48% of the respondents ...
October 14, 2012 by Diana

MATHS
A pie is cut into two equal parts. The first part of the pie is shared between Abdul and Kate. Kate has 3 times as much as Abdul. The second part of the pie is shared between Sarah and Ron. Ron has 3/5 as much as Sarah. The mass of Sarah's share of the pie is 200 grams. What ...
November 7, 2013 by LARA

CHemistry
The first step of the synthesis is described by the reaction below. When 1.200 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4, the theoretical yield of FeC2O42H2O is ? grams im not sure what to do. do u convert 1.0M to grams first? by multiplying .013 L thx First...
April 22, 2007 by Jason

AP Chemistry
My objective is to find the molar mass of a gas. Is this the correct balanced equation for magnesium ribbon reacting with hydrochloric acid to form hydrogen gas? 2Mg (s) + 2HCL (l) ----> H2 (g) + 2MgCl (aq) Also, I'm required to find the mass of the magnesium ribbon in ...
September 23, 2007 by Jake

physics
How much paraffin oil would be needed to heat the same volume of water? • Heat capacity of water = 4200 j kg-1 K-1 • Mass of 1 litre of water = 1kg • Heat value of paraffin = 45M J kg-1 • Density of paraffin = 800kg m -3 • 1 cubic centimetre (1cm3 = 10-6 m3) • Water ...
December 15, 2010 by Paul

english
3. In “The Pigman & Me,” the author creates a mood of suspense by focusing most of the action around a fight between two boys at school. a tree cut almost to its heart. Nonno Frankie’s advice to Paul. concerns about how a girl will react.
November 17, 2014 by robert

Chemistry
Even if you can help answer one that would be a great help! 1. How many liters of NO(g) are produced when 0.85L of 2.00M HNO3 solution is added to 216g according to the equation. Which reactant is the limiting reactant? 3 Ag + 4 HNO3 -> 3 AgNO3 + NO + 2 H2O3 2. Calculate ...
October 20, 2013 by P.

Chem
a 0.2000 grams sample of aluminum metal is added to a solution containing 1.0000grams of an unknown compound made of platinum and chloride ion. the reaction results in the formation of aluminum chloride and platinum metal. when the reaction is complete, unreacted aluminum ...
March 1, 2014 by Carley

Physics
A nuclear power plant has an electrical power output of 1200 MW and operates with an efficiency of 31%. If excess energy is carried away from the plant by a river with a flow rate of 1.0 x 10^6 kg/s, what is the rise in temperature of the flowing water?
December 4, 2010 by Stefan

chemistry
For the reaction Al (s) + 3 HCl (aq) -> AlCl3 (s) + ₃/₂ H2 (g), it was observed that when 4.00 g of aluminum reacted with excess HCl, exactly 30.0 kJ of heat were released. The delta H for this reaction is a) – 91.3 kJ b) – 120 kJ c) – 202 kJ d) – 7.50 kJ I ...
January 23, 2012 by Walter

chemistry
For the reaction Al (s) + 3 HCl (aq) -> AlCl3 (s) + ₃/₂ H2 (g), it was observed that when 4.00 g of aluminum reacted with excess HCl, exactly 30.0 kJ of heat were released. The delta H for this reaction is a) – 91.3 kJ b) – 120 kJ c) – 202 kJ d) – 7.50 kJ I ...
January 23, 2012 by Walter

chemistry
Q3: In the combustion reaction of 149g of propane(C3H8) with excess oxygen, what volume of carbon dioxide(CO2) is produced at STP? (note: balance the reaction first) C3H8 + O2  3CO2 + H2O
December 8, 2013 by b

Algebra I
In planning for a new item, a manufacturer assumes that the number of items produced x and the cost in dollars C of producing these items are related by a linear equation. Projections are that 100 itmes will cost $10,000 to produce and that 300 items will cost $22,000 to ...
August 21, 2007 by Katie

statistics
Suppose that there are 10 million workers in Canada and South Korea and each worker in Canada and South Korea can produce 4 cars per year. A Canadian worker can produce 10 tonnes of grain a year, whereas a South Korean worker can produce 5 tonnes of grain a year. The following...
November 11, 2011 by cheryl

MACROECONOMICS
Suppose that there are 10 million workers in Canada and South Korea and each worker in Canada and South Korea can produce 4 cars per year. A Canadian worker can produce 10 tonnes of grain a year, whereas a South Korean worker can produce 5 tonnes of grain a year. The following...
November 13, 2011 by cheryl

chemistry
CaCO3(s) + 2 HCl(aq) --> CaCl3(aq) + H2O(l) + CO2 It takes 19.26 mL of 0.6721 M HCl to completely react with the CaCO3. What is the mass of CaCO3 in the tablet? didnt mean to cal you
November 11, 2012 by Sheree'

Chemistry
You weigh out 1.60 g of sodium carbonate monohydrate, dissolve it in water and react it with 15.00 mL of 2.00 M HCl. Write an equation for the reaction and calculate the expected mass or carbon dioxide that will be produced. Your answer should be a decimal number to 3 decimal ...
September 23, 2012 by Sarah

chemistry
C6H12 = 9O2 --> 6CO2 = 6H2O + 3,690 kJ *Personally Balanced* What quantity of heat is produced if 32g of cyclohexane react with 95 L of oxygen at STP? *My work so far is below* 95L*(1 mol O2/22.4L) = 4.2 mol O2 What would be the next motive?
January 21, 2015 by Lola

chemistry
a candle was 27.9 grams. the mass of the candle that burned in 3 minutes was 7.2 grams. a) How many moles of wax were in the candle before it burned ? b) How many molecules are in the candle before it burned? c) How many moles of wax were used up during the burning? d) How ...
May 17, 2012 by auburn

Chemistry
A reaction mixture of 4.0 mL of 0.002 M SCN- and 5.0 mL of 0.002 M Fe3+ is diluted to 10.0 mL with 0.1 M HNO3 to form the blood-red FeNCS2+ complex. The equilibrium molar concentration of the FeNCS2+ determined from a standardization curve is 1.5x10^-4 mol/L. Calculate, in ...
March 18, 2013 by Anonymous

Science/Math
We have 30 grams of clay. We understand that Density=Mass/Volume. We understand that the Density of water is 1.0 and in order for the clay boat to float in the water Density needs to be less than 1.0. So my question is using 30 grams of clay what design will allow me to hold ...
April 24, 2011 by Paul

Accounting
It's approaching year-end, and your president has asked you, the management accountant, to visit his office for a heart-to-heart talk. After he closes the door, he tells you that profits for the year will end up below plan and that he's disappointed. He had just returned from ...
July 19, 2010 by Anonymous

math
1. Elizabeth planned to make 6 pans of apple crisp for the day, using extra tart granny smith apples-just like her grandmother had. But after peeling, coring, and slicing she had a major problem: she only had 10 cups of apple slices. it was getting late and she needed to get ...
June 22, 2014 by kgk

Scientic Notation
A family refers to a group of two or more people related by birth, marriage, or adoption who reside together. In 2000, in Country A, the average family net worth was 430,000 and there were about 9.2 x 10 to the seventh power families. Calculate the total family net worth in ...
May 19, 2013 by Anonymous

chemistry 101
calculate the molecules of oxygen required to react with 28.4g of sulfur in the following reaction? a)1.60 * 10 **24 molecules b)3.56 * 10**23 molecules c)2.67 * 10**23 molecules d)5.33 * 10**23 molecules e)8.00 * 10**23 molecules
November 24, 2009 by yalda

chemistry check 2
I know you've read this question too many times already but I just want to make sure I did the last part (Ksp) correctly. 50.0 ml of a 0.0500 M solution of lead (II) nitrate is mixed with 40.0 ml of a 0.200 M solution of sodium iodate at 25°C. Calculate the Pb2+ and IO3- ...
May 17, 2007 by mel

Organic Chemistry
Hi, can you please help me with these questions. Methane and chlorine react when irradiated with UV light. Explain why the reaction requires only a little flash of UV light rather than prolonged radiation. Explain each of these observations as fully as you can. 1.
July 26, 2006 by Ishani

chemistry
What volume (in Liters) of hydrogen must react to form 17.0L of ammonia according to the following balanced equation: N2(g) + 3H2(g) --> 2NH3(g) Ratio from equation is H : NH3 = 3 : 2 = 3/2 : 1 = 17x3/2 : 17 = 25.5 : 17 17 L of hydrogen can you check my work is this right?
October 17, 2010 by Melissa

chemistry
what volume in Liters of 0.15M KCl solution is required to completely react with 0.150 liter of a 0.175M Pb(NO3)2 solution according to the following balanced equation? 2KCl(aq)+ Pb(NO3)2(aq)-PbCl2(s)+ 2KNO3(aq)
October 26, 2010 by mike

biology grade 12
My teacher wants me to calculate the rate of enzyme activity (1/s) I'm given the temperatures: 0 , 15, 30, ,50, and 80 (degrees celsius) AND the times 8.74, 18.83, 14.30, 34.22, and infinity (seconds obviously, these are the times it took the enzyme to react) What am i ...
February 27, 2011 by hello

gr. 12 biology
My teacher wants me to calculate the rate of enzyme activity (1/s) I'm given the temperatures: 0 , 15, 30, ,50, and 80 (degrees celsius) AND the times 8.74, 18.83, 14.30, 34.22, and infinity respectively (seconds obviously, these are the times it took the enzyme to react) ...
February 27, 2011 by paul

gr. 12 biology
My teacher wants me to calculate the rate of enzyme activity (1/s) I'm given the temperatures: 0 , 15, 30, ,50, and 80 (degrees celsius) AND the times 8.74, 18.83, 14.30, 34.22, and infinity respectively (seconds obviously, these are the times it took the enzyme to react) ...
February 27, 2011 by paul

chem
write an equation for which component of the phosphate buffer (H2PO4-/ HPO4^2-) reacts when HCl is added. Do the same for NaOH. I think that the H2PO4- will react with the NaOH but its only a guess and I'm confused as to how I would go about doing this.
January 29, 2012 by jean

Chemistry
A solution containing 0.100 mol of Na2CO3 and 0.100 mol of NiCl2 is allowed to react. What mass of precipitate forms in this reaction? I just don't understand how to get the answer. Can someone please show me and explain to me how to do this.
February 25, 2013 by Eagertolearn

chemistry
What volume of hcl solution of density 1.2g/cm3 and containing 36.5% by weight hcl, must be allowed to react with zinc in order to liberate 4g of hydrogen The answer 333.3ml Who helps me step by step for me
July 4, 2014 by ken

sociology
Micah is studying child behavior in playgrounds throughout the world. He wants to see how the children react when teachers select the same child to be the first to use each piece of equipment. Which approach is Micah is using?
October 8, 2014 by tyler

Chemistry help needed
How do I prepare 90% formic acid from conc. formic acid (98%-100% of density 1.22g/ml)? Please help me check if my calculations are correct. Assuming conc. formic acid is 99%, 0.99 X 1.22 = 1.2078 Add 1.2078 / 9 = 0.1342ml H2O to 1ml of conc. acid to have a solution that is 90...
December 17, 2008 by tricia

chemistry equilibriums
At a certain temperature, 2.00 moles of phosphorus(V) chloride, PCl5, was placed in a 1.0 L vessel and permitted to react as shown: PCl5 (g) <-> PCl3 (g) + Cl2(g) At equilibrium, the container held 0.40 PCl5. What is the numerical value of Kc for the system as written? A...
December 29, 2010 by chem

AP Chemistry
A solution is 1.0M in AgNO3 and Fe(NO3)2.in the electrolysis of this solution using inert electrodes, the voltage is gradually increased. What is the order in which the substances in the solution would plate our or react at the cathode ? Assume that the overvoltage of hydrogen...
March 19, 2014 by chemistinprogress

Chemistry
How can I tell if the following equations produce precipitates or not? 1. HgCl2 (aq) + K2CrO4 (aq) ==> 2. Ba(OH)2 (aq) + NaClO3 (aq) ==> 3. ZnI2 (aq) + CaSO4 (aq) ==> 4. SnCl2 (aq) + MgBr2 (aq) ==>
January 10, 2008 by Cierra

Physics
By how much shoould a pair of light rays from a common source differ in length to produce destructive interference?
March 22, 2008 by Emily

chemistry
what is the balanced chemical equation for aqueous hydrgoen peroxide to produce solid lead (II) sulfate and liquid water?
May 7, 2008 by rachel

science
is life processes a function that a living thing performs to stay alive and produce more of its own kind
May 26, 2009 by annette

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