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July 30, 2014

Homework Help: Science: Chemistry

Recent Homework Questions About Chemistry

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Chemistry
Manganese trifluoride, MnF3,can be prepared by the following reaction. 2 MnI2 (s) + 13 F2 (g) ---> 2 MnF3(s) + 4 IF5(l) What is the minimum number of grams of F2 that must be used to react with 12.0 g of MnI2 if the overall yield of MnF3 is no more than 75% of theory?
Monday, May 26, 2014 at 6:10pm

Chemistry
Calculate the molar solubility of manganese II hydroxide in ph 12.85 solution.
Monday, May 26, 2014 at 5:49pm

Chemistry
What element(s) are more polarizable than oxygen? How can you tell? Wouldn't fluorine be most polarizable, because it is the most electronegative?
Monday, May 26, 2014 at 5:20pm

chemistry
A is a solution of HCL containing 7.30g/dm3.B is a solution ofX2CO3 containing 10.6g/dm3.assume that average volume of acid is 2.81cm3 and the volume of base is 25.00cm3.from your result and information .calculate (I)concentration of A in mol/dm3(ii)concentration of B in mol/...
Monday, May 26, 2014 at 5:15pm

chemistry
Calculate the mass of oxygen (in mg) dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air to be 0.21 and the Henry's law constant for oxygen in water at this temperature to be 1.3 x 10-3 M/atm.
Monday, May 26, 2014 at 3:45pm

chemistry
identify the type of reaction:- FeSO4 + heat ----------> Fe2O3 + SO2 + SO3
Monday, May 26, 2014 at 6:53am

chemistry
X is a solution,of dibasic of H2X. G is a solution containing 1.00g of NaOH in 250cm3 of solution . 24.60cm3 of solution F required 25.00cm3 of solution G . From your result and information provided above. (I)concentration of G in mol/dm3 (ii) concentration of F in mol/dm3 (...
Sunday, May 25, 2014 at 3:28pm

Organic Chemistry
What ketone or aldehyde would be reduced to produce each alcohol, respectively: a. 3,3-Dimethyl butan-2-ol b. 3-Methyl butan-1-ol c. Benzyl alcohol
Saturday, May 24, 2014 at 11:36pm

chemistry
aspirin, Sodium bicarbonate, and Salicylic acid. From these examples, select one acid, one base, and one salt and describe specifically how and where they are used in therapeutic processes.
Saturday, May 24, 2014 at 8:30pm

chemistry
how many molecules of h2o if formed from this equation Al2O3 + 3H2 ->2Al + 3H2O
Saturday, May 24, 2014 at 5:37pm

CHEMISTRY
given this balance equation, C2H5OH+3O2=3H2O+2CO2 HOW MANY GRAMS OF CO2 ARE PRODUCED FROM 18.5 GRAMS OF OXYGEN GAS?
Saturday, May 24, 2014 at 4:13pm

Calculation in chemistry
8.0g of mettalicoxide were reduced by hydrogen to give a metal of 2.0g. Calculate the mole of d metal that will combined with 0.5moles of oxygen.
Friday, May 23, 2014 at 4:53pm

Chemistry
How many moles of silver will be deposited from a silver(i)trioxonitrate(v)solution by 16g of copper (Ag=108, Cu=64).
Friday, May 23, 2014 at 4:26pm

chemistry
Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution containing 0.065 mol citric acid (H3A), 0.025 mol 8-hydroxyquinoline (HB), and 0.040 mol KOH. Consider just acid-base chemistry. Ignore ion pairing and activity ...
Friday, May 23, 2014 at 1:46pm

Chemistry
Determine the final pressure of a gas that has initial pressure of 1.00 atm and is heated from 20.0 C to 30.0 C in a container with a fixed volume.
Friday, May 23, 2014 at 12:35pm

chemistry
What is the monomer and polymer structure of DNA?
Friday, May 23, 2014 at 1:22am

Chemistry
The mechanism for the reaction described by No2+CO--->CO2+NO is suggested to be (1)2NO2--->NO3+NO (2)NO3+CO--->NO2+CO2 Assuming that [NO3] is governed by steady-state conditions, derive the rate law for the production of CO2(g) and enter it in the space below. rate of...
Friday, May 23, 2014 at 12:43am

Chemistry
Balance Redox using reactions by the 1/2 reaction method. NaIO3 (aq) + KI (aq) -->„³ I2 (s)
Thursday, May 22, 2014 at 9:52pm

chemistry
I say unsaturated. Am I right?
Thursday, May 22, 2014 at 9:22pm

chemistry
If 75 g of NaNO3 is dissolved in 100 g of H2O at 10°C, is the solution saturated, unsaturated or supersaturated?
Thursday, May 22, 2014 at 9:20pm

Chemistry
Why would copper (II) sulfate solution react with iron to produce 3 CuSO4(aq) + 2 Fe (s) = 3 Cu (s) + Fe2(SO4)3 (aq)
Thursday, May 22, 2014 at 6:50pm

Chemistry
Can anyone help me with some topics to write about on what chemistry has to do with mechanical engineering. Anyone's help would be appreciated because I really need to finish this 10 page research paper.
Thursday, May 22, 2014 at 4:06pm

Chemistry
Which of the following results from the presence of a solute in a given solvent? A. The vapor pressure of the solution is lower than that of the pure solvent. B. The boiling point of the solution is lower than that of the pure solvent. C. The freezing point of the solution is ...
Thursday, May 22, 2014 at 3:22pm

Chemistry
If the solubility of a gas in water is 1.22 g/L at 2.75 atm, what is its solubility (in g/L) at 1.0 atm? A. 0.44 g/L B. 3.97 g/L C. 2.25 g/L D. 3.36 g/L I think the answer is C.. i did 2.75 x 1.0 = 2.75 / 1.22 = 2.25 but people say the answer is A... why? i think the answer is...
Thursday, May 22, 2014 at 2:22pm

CHEMISTRY
WHICH IS LIMITING REAGENT IN FOLLOEING REACTION 3Mg +N2 =Mg3N2
Thursday, May 22, 2014 at 12:51pm

CHEMISTRY
.4g sample of monobasic acid requires 16cm3 of .1 mol dm 3 of NAOH for complete neutralization what is relative mass of acid
Thursday, May 22, 2014 at 12:36pm

chemistry
balance the charge in the two half reactions by multiplying the half reactions by the correct multiplication factors
Thursday, May 22, 2014 at 11:56am

Chemistry
5C(s)+2SO2(g)->CS2(I)+4CO(g) A-) if you have 6.78 g of C and 7.54 g of SO2, how many grams of CO can be created? B-) what is the limiting reagent from A? C-) how much of the excess reagent is left after reaction? D-) if only 5.89 of CO was actually created, what is the ...
Thursday, May 22, 2014 at 9:04am

Chemistry
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more compli- cated, but this is a reasonable first approxima- tion.) The combustion of carbon is described by the equation C(s) + O2(g) −→ CO2(g) ∆H◦ = −394 kJ What is ...
Thursday, May 22, 2014 at 8:01am

Chemistry
The heat of combustion of methane is -890 kj per mole. How much heat will be produced in the combustion of 6.25 mol of methane?
Thursday, May 22, 2014 at 2:46am

Chemistry
The solubityof a compound in water is 6.8g/100ml at 0degreesC and 0.33g/100ml at 25degreesC.calculate the amount of water required to crystallize 10g of the compound.If the compound is collected at 25degreesC what is the maximum possible yield present?
Thursday, May 22, 2014 at 2:43am

Science(chemistry) please help me fast
When you take a block of butter out of the fridge,it is hard.however,after 15 minutes at room temperature it is soft enough to spread.use kinetic theory to explain the above observation
Thursday, May 22, 2014 at 1:16am

Science(chemistry)
When you take a block of butter out of the fridge,it is hard.however,after 15 minutes at room temperature it is soft enough to spread.use kinetic theory to explain the above observation
Thursday, May 22, 2014 at 1:15am

analytical chemistry
A solution containing 0.40 M B (a weak base) and 0.20 M BH+ (the salt of the weak base) has a pH = 10.30. What is the pH after 25 mmol of HCl is added to 250 mL of this solution?
Thursday, May 22, 2014 at 1:01am

chemistry
initially 1 mol each of gaseous carbon dioxide, co2(g) and hydrogen h2(g) is inhected into a 10.0L reaction chamber at 986 degrees. What is the predicted concentration of each entity at equilibrium? the equation is as follows: co2(g)+ h2(g)= co(g)+h20 (g) k=1.60 at 986 degrees
Thursday, May 22, 2014 at 12:03am

chemistry
Calculate the current in ampheres required to produce 15.0g in 2 hrs.
Wednesday, May 21, 2014 at 5:32pm

Chemistry
Suppose that coal of density 1.5g/cm3 is pure carbon. The combustion of carbon is described by the equation C+O2---> CO2 ∆H◦ = −394 kJ What is the value of q (heat) a ump of coal the size of 7.5cm*7cm*6.5cm is burned? answer in kJ what mass of water can be...
Wednesday, May 21, 2014 at 4:25pm

Chemistry
Hey guys so I was absent for my class and my teacher STILL wants me to figure out how to do limiting reactant and theoretical yield I tried Khan academy and it was no use. So basically the first question is : My data is : Mass of lead nitrate = 5.03g and Mass of Potassium ...
Wednesday, May 21, 2014 at 4:16pm

Chemistry
Ammonia is produced when Nitrogen gas reacts with Hydrogen gas, as shown by the equation below: N2 + 3H2 --> 2NH3 If the percentage yield is 90%, what would be your experimental yield of NH3 if 145.8g of N2 react? 2) 2Mg + O2 --> 2MgO A) If 50g of Mg reacts with 50g of ...
Wednesday, May 21, 2014 at 3:55pm

Chemistry
Ammonia is produced when Nitrogen gas reacts with Hydrogen gas, as shown by the equation below: N2 + 3H2 --> 2NH3 If the percentage yield is 90%, what would be your experimental yield of NH3 if 145.8g of N2 react? 2) 2Mg + O2 --> 2MgO A) If 50g of Mg reacts with 50g of ...
Wednesday, May 21, 2014 at 3:55pm

Chemistry
A sample of H2 is collected over water such that the combined hydrogen–water vapor sample is held at a pressure of 1 standard atmosphere. What is the partial pressure of the H2 if that of the water vapor is 2.5 kPa? A. 103.8 kPa B. 98.8 kPa C. 2.5 kPa D. 101.3 kPa B or C???
Wednesday, May 21, 2014 at 3:19pm

Science(chemistry)
Give one word/term for the following descriptions during this type of reaction,the appearance,colour or shape of a substance is changed
Wednesday, May 21, 2014 at 2:58pm

chemistry
How many grams of magnesium metal will react completely with 5.2 liters of 4.0 M HCl? Show all of the work needed to solve this problem. Mg (s) + 2 HCl (aq) yields MgCl2 (aq) + H2 (g)
Wednesday, May 21, 2014 at 2:24pm

Chemistry
How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitrate solution reacts with excess aluminum metal? Show all of the work needed to solve this problem. 2 Al (s) + 3 Fe(NO3)2 (aq) yields 3 Fe (s) + 2 Al(NO3)3 (aq)
Wednesday, May 21, 2014 at 2:21pm

chemistry
The volume of a gas is 150 mL at 240.0 kPa pressure. What will the pressure be when the volume is reduced to 100.0 kPa, assuming the temperature remains constant?
Wednesday, May 21, 2014 at 2:04pm

Science(chemistry)
Give one word/term for the following description in any given chemical compound,the elements always combine in the same proportion with each other
Wednesday, May 21, 2014 at 1:55pm

chemistry
Calculate a value for the solubility of (NH4)2C2O4H2O in g/100 cm3 at 298 K
Wednesday, May 21, 2014 at 9:10am

chemistry
i need to find the enthalpy for COF2 F2 (g) + CO (g) --> COF2 (g) i found -507 but i am not sure if it is correct
Wednesday, May 21, 2014 at 7:12am

Chemistry
Stoichiometry; Find the percent yield of solid calcium carbonate made when 5.0 mL of 1.0 M Sodium Carbonate reacts with 0.40g Calcium Chloride Balanced Equation; Na2(CO3)+CaCl2-->2NaCl+CaCo3 could you please help me step by step to find the theoretical yield as well as the ...
Wednesday, May 21, 2014 at 12:28am

Chemistry
A 1N solution of NaOH is diluted 4/20 then rediluted 1:50. What is the final normality? How many grams of NaOH are present in 100ml of the final solution? I sort of understand the basic concept, but I don't really know how to do normality problems.
Tuesday, May 20, 2014 at 9:50pm

Chemistry
If 150 mg of aspirin are rinsed with three portions of 10 mL of water at 25 degrees Celsius, how much aspirin is recovered? Solubility of aspirin in water at 25 degrees Celsius is one gram of aspirin per 300 mL of water.
Tuesday, May 20, 2014 at 9:33pm

chemistry
name the compound CH3CH=C(CH3)CH(CH3)2.
Tuesday, May 20, 2014 at 8:34pm

Physic/Chemistry
You react 25.0 liters of oxygen gas at STP with 50.0 ml of ethanol liquid. Ethanol has a density of 0.789 g/ml. After actually running the reaction you determined the percent yield was only 78.5%. How many LITERS of CO2 did you make? (Must put CO2 in answer label)
Tuesday, May 20, 2014 at 8:04pm

AP chemistry
i don't know what to do. 25 g of aluminum is added to 100 g of water. The aluminum is initially 0 degrees Celsius and its specific heat is 0.897 J/g*C. If the final temperature of both is 40 degrees Celsius, what was the initial temperature of the water?
Tuesday, May 20, 2014 at 7:23pm

Chemistry
What is the specific heat of a substance if 2100 J is required to raise a 312 g sample by 15 degrees Celsius? So I use the q = mcΔT formula 2100J = (312 g)c(85 °C - 15 °C) I'm not sure if I did it right.
Tuesday, May 20, 2014 at 7:11pm

Chemistry
The amount of heat required to raise 200 g of aluminum by 10 degrees celsius if its specific heat is 0.897 J/gC ? I need help. This is all confusing.
Tuesday, May 20, 2014 at 6:53pm

Chemistry
what mass of hydrogen must be reachted with excess nitrogen to produce 5000. J of energy based on the reaction: 3H2+N2--> 2NH4+2709J
Tuesday, May 20, 2014 at 6:42pm

Chemistry
1. Sugar can be dissolved in water because of the presence of bonds between _______ in its molecule. 2. If the maximum amount of a compound that can dissolve in 100 mL of water is 22 g, then a solution of 20 g of that substance in 100 mL of water is said to be _______. 3. A ...
Tuesday, May 20, 2014 at 5:38pm

Chemistry
1. Sugar can be dissolved in water because of the presence of bonds between _______ in its molecule. 2. If the maximum amount of a compound that can dissolve in 100 mL of water is 22 g, then a solution of 20 g of that substance in 100 mL of water is said to be _______. 3. A ...
Tuesday, May 20, 2014 at 4:38pm

Chemistry
Silver forms a compound with nitrogen. In an experiment, 344.588 g of silver is placed in a reaction vessel with 15.906 of nitrogen. After the reaction is complete, all of the silver has been consumed, and there are 359.503 g of compound in the vessel. What is the mass of ...
Monday, May 19, 2014 at 10:08pm

Chemistry
Calculate the enthalpy change, ∆H in kJ, for the reaction H2O(s) → H2(g) + 1/2O2(g) Use the following: A. –291.9 kJ B. +291.9 kJ C. –279.9 k D. +279.9 kJ D??
Monday, May 19, 2014 at 4:38pm

chemistry
What pressure in kpa is exerted by 94.6 g CO2 at 57°C in 0.750 dm 3
Monday, May 19, 2014 at 4:07pm

Chemistry
Absolute zero is A. the temperature at which the motion of particles theoretically ceases. B. defined as 0°C. C. the triple point for water. D. all of the above A???
Monday, May 19, 2014 at 4:03pm

Chemistry
If one mole of each is dissolved in 1.00 L of water, which will lower the vapor pressure the most? Why? A)C12H22O11 B)C3H7OH C)NaNO3 D)MgCl
Monday, May 19, 2014 at 3:49pm

CHEMISTRY
Determine the numbers of liters of oxygen required to oxidize 46 g of carbon to make carbon monoxide at STP?
Monday, May 19, 2014 at 2:31pm

Chemistry
Consider the following reaction: CaCO3(s)→CaO(s)+CO2(g). Estimate ΔG∘ for this reaction at each of the following temperatures. (Assume that ΔH∘ and ΔS∘ do not change too much within the given temperature range.) for 310K,1070,1470 this is...
Monday, May 19, 2014 at 2:17pm

Chemistry
When 155 mL of water at 26 degrees Celsius is mixed with 75 mL of water at 95 degrees Celsius, what is the final temperature of the mixture? (d Water = 1.00 g/mL) Im really stuck on this problem and chemistry isnt exactly my strong point, thanks in advance!
Monday, May 19, 2014 at 1:00pm

chemistry
which of these reactions (a) or (b) is spontaneous? Explain why. write the half cell equations for the spontaneous reaction. Identify which element is oxidized and which is reduced. (a) Fe^0+Mg^+2 --> Mg^0 + Fe^+2 (b) Fe^+2 + Mg^0 --> Fe^0 + Mg^+2
Monday, May 19, 2014 at 12:18pm

chemistry
how to prepare 10g per litre of hydrochloric acid
Monday, May 19, 2014 at 8:59am

chemistry
A sample of gas occupies 100ml at 27degree Celsius and 740mm pressure. The temperature the gas will have,when its volume is changed to 80ml at 740mm pressure is?
Monday, May 19, 2014 at 6:58am

Chemistry
A sample of gas occupies 100ml at 27 degree Celsius and 740mm pressure. The temperature the gas will have,when its volume is changed to 80ml at 740mm pressure is?
Monday, May 19, 2014 at 6:53am

chemistry
What is the pH of a 0.001 M solution of acetylsalicylic acid (aspirin) (Ka 3.0 x 10-4)?
Monday, May 19, 2014 at 4:36am

Chemistry
Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Mg2 ] = 0.763 M and [Sn2 ] = 0.0180 M Mg(s)+Sn^2+(aq)-->Mg^(2+)+Sn(s) I keep getting 2.57 but it says I'm wrong. Please help me!
Sunday, May 18, 2014 at 10:59pm

Chemistry
Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Mg2 ] = 0.763 M and [Sn2 ] = 0.0180 M Mg(s)+Sn^2+(aq)-->Mg^(2+)+Sn(s) I keep getting 2.57 but it says I'm wrong. Please help me!
Sunday, May 18, 2014 at 10:13pm

chemistry
Enzymes are a catalyst, which means that they make chemical reactions go faster. “How does a catalyst affect the activation energy of the reaction?
Sunday, May 18, 2014 at 9:56pm

Chemistry
Give the half equations at the anode and cathode for a dilute hydrochloric acid,dilute copper chloride solution and the concentrated magnesium solution.
Sunday, May 18, 2014 at 9:03pm

Chemistry
Show the half equations at the anode and cathode for an electrolysis of concentrated magnesium chloride solution using inert electrode
Sunday, May 18, 2014 at 8:49pm

chemistry
Describe a suitable procedure for preparing a saturated solution of trioxonitrate(v) at 30 degree celsius?
Sunday, May 18, 2014 at 6:29pm

Chemistry
Free-energy change, ΔG∘, is related to cell potential, E∘, by the equation ΔG∘=−nFE∘ where n is the number of moles of electrons transferred and F=96,500C/(mol e−) is the Faraday constant. When E∘ is measured in volts, Δ...
Sunday, May 18, 2014 at 6:26pm

Chemistry
Calculate ΔG∘ at 298 K for the following reactions. Ca(s)+CO2(g)+12O2(g)→CaCO3(s) 2KClO3(s)→2KCl(s)+3O2(g) CO(g)+H2O(g)→H2(g)+CO2(g)
Sunday, May 18, 2014 at 6:19pm

Chemistry
What is [OH-] for a 4.72 X 10^-9M HCL solution? Would I just take 1.0X10-14 divided by 4.72X10-9?
Sunday, May 18, 2014 at 3:34pm

Chemistry
calculate the concentration of the silver ion remaining in the solution when 10g of solid AgNO3 is added to 50 ml of 1x10-2 M NaCl solution.
Sunday, May 18, 2014 at 1:42pm

Chemistry
How many grams of CaCl2 are needed to make 100ml of a 15% solution in water if only the dihydrated (CaCl2⋅2 H2O) salt is available?
Sunday, May 18, 2014 at 1:32pm

chemistry
Is it possible to identify a metal in a fragment if you only know the specific heat?
Sunday, May 18, 2014 at 10:35am

Chemistry
A sample of oxygen is in a 570 L balloon at 118.8 kPa. What is the volume of the balloon, in litres (to 1 decimal place, input value only) if the pressure is changed to 1.359 atm? Assume that the temperature remains constant.
Sunday, May 18, 2014 at 9:01am

Chemistry
What pressure (in atmospheres) will be exerted by 1.3 moles of gas in a 13 litre flask at 22 degrees Celcius? (Gas constant (R) = 0.0821 L atm K^-1 mol^-1)
Sunday, May 18, 2014 at 8:56am

Chemistry
A chemist has a supply of supersaturated CuSO4 solution that contains 230.0grams per litre of water. The chemist also has another supply of copper sulphate solution with a concentration of 150.0 grams per litre. What quantities of each copper sulphate solution should be mixed ...
Sunday, May 18, 2014 at 8:42am

chemistry
a chemist has a supply of cuso4 solution that contains 230 gram per litre of water. she wishes to make a copper sulphate solution that has a solution of 200.0 grams per litre gow ,uch of her copper sulphate solution should she use and how much water should be added to make ...
Sunday, May 18, 2014 at 3:36am

Chemistry
Please help! I can't seem to set this up right At any given temperature 2NO(g) + O2(g) <-> 2NO2 kp=1X10^4 2NO2(g) <-> N2O4 kp=1X10^-1 Find the kp 2NO(g) < -> O2(g) + N2(g) kp=?
Sunday, May 18, 2014 at 1:41am

chemistry
Enzymes are a catalyst, which means that they make chemical reactions go faster. “How does a catalyst affect the activation energy of the reaction?
Sunday, May 18, 2014 at 1:24am

Chemistry
The temperature of a 2.25L sample of gas decreases from 45.0'C to 20.0'C. What is the new volume?
Saturday, May 17, 2014 at 8:07pm

Chemistry
Explain why methyl red would be a good indicator for a titration of 0.25M NaOH with .025M HNO3, but a poor choice for use in a titration of 0.25M NaOH with 0.25M HCN. I'm pretty sure the first step is to find the pH of the two titrations (and then compare those to the pH ...
Saturday, May 17, 2014 at 7:50pm

Chemistry
Can some one show me a simple step by step solution to solve this. The book is very confusing. Determine the amount of NH4Cl that will be formed from the 34.0 g of NH3. Remember to use significant figures and a unit in your answer (for example, 275 g).
Saturday, May 17, 2014 at 12:27pm

chemistry
For the reaction 2 Na + 2 H2O -------> 2 NaOH + H2, how many grams of hydrogen gas are produced when 133.6 g of water are reacted? I tired it like the steps to the last one and I still got answer wrong can you please show steps you would perform?
Saturday, May 17, 2014 at 12:00pm

CHemistry
For the reaction 2 Na + 2 H2O -------> 2 NaOH + H2, how many grams of hydrogen gas are produced when 133.6 g of water are reacted? I am soooo confused in chemistry. Please help.
Saturday, May 17, 2014 at 10:30am

chemistry
what is the PH of a solution containing .03 M of acetic acid and .3 mole of sodium acetate (CH3COONa) ? Ka for CH3COOH = 1.8*10^-5
Saturday, May 17, 2014 at 3:44am

Chemistry
- What effect would be on the normality of unknown acid? Explain why. (standarized NaOH in the burette) a) if a wet burette is used for NaOH (that has a known normality) b) if a wet conical flask is used for the titration against the acid c) if an air bubble is out from the ...
Friday, May 16, 2014 at 3:48pm

chemistry
which of these reactions if spontaneous? (a) Fe^0 + Mg +2 --> Mg^0 +Fe+2 (b) Fe+2 + Mg ^0 --> Fe^0 + Mg +2 write the half cell equations for the spontaneous reaction. which element is oxidized and which is reduced?
Friday, May 16, 2014 at 1:08pm

chemistry
How many atoms are in 33 g of C33H18O2?
Friday, May 16, 2014 at 11:52am

chemistry
write the balanced half equation in acid medium when ethanol gets converted into acetic acid and compute eq.wt.of thanol qb
Friday, May 16, 2014 at 7:24am

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