April 20, 2014

Search: how many grams of O2 are consumed..

Number of results: 16,152

What is the product? Fe may react to form Fe2O3 or it might make FeO. My guess, expecially in the presence of pure O2, the product is Fe2O3. If it isn't you can tailor the answer to fit the product. 1. Write the balanced equation. 4Fe + 3O2 ==> 2Fe2O3 2. Convert 15.0 g Fe ...
Monday, January 28, 2008 at 3:12pm by DrBob222

C + O2 ==> CO2 mols C = grams/molar mass 1 mol C forms 1 mol CO2 Then grams CO2 = mols CO2 x molar mass CO2. This is the theoretical yield. %yield = (actual yield/theo yield)*100 = ?
Saturday, May 18, 2013 at 1:45pm by DrBob222

At STP volume oxygen is volume O2 = 2.0 mol CH4 x (2 mols O2/1 mol CH4) = 2*2/1 = 4 mols O2. Use PV = nRT to convert to L at the conditions of the problem.
Monday, February 18, 2013 at 11:51pm by DrBob222

You don't say if 2.0 x 10^-8 is Kp or Kc. Your balanced equation is ok but thereafter is not. 2CO2 ==> 2CO + O2 If the K you omitted is Kc, then, initial: (CO2) = 2.0 (CO)=0 (O2)=0 change: (CO) = +x (O2) = +x (CO2) = -2x equilibrium: (CO) = +x (O2) = +x (CO2) = 2.0 - 2x Now...
Sunday, March 1, 2009 at 8:41pm by DrBob222

I can tell you from many years of experience that MOST of the time the correct answer is A (H^+ and H2O) BUT that isn't always the correct answer. For example, in the half reaction of O2 ==> H2O we do the following: first multiply H2O x 2. O2 -->2H2O O2 is zero, O in H2O...
Thursday, August 19, 2010 at 12:13am by DrBob222

a resting person requires 14.5 L of O2 per hour to maintain metabolic activities. Such a person breathes in 0.50 L of air at approximately 20 degrees C with each breath. The inhaled air is 20.9%O2 while the exhaled air is 16.3% O2. (a) how many breaths per minute does a ...
Thursday, November 19, 2009 at 3:39pm by Joe

Get a second opinion on this AND check my thinking.. N2O5 ==> N2O3 + O2 N2O3 ==> N2O + O2 Add the two equations to obtain N2O5 ==> N2O + 2O2 and k for this reaction is k1*k2 = 7.75*4 = 31.0 = (N2O)(O2)/(N2O5). The final O2 is 4.5 moles; some came from reaction 1 and ...
Saturday, February 12, 2011 at 10:55pm by DrBob222

Oxygen in the gaseous state, and uncombined with anything, is O2. So K + O2 ==> K2O. Now you balance it.
Monday, February 9, 2009 at 7:49pm by DrBob222

Simple Chem O2
What is O2 mean? Also what is oxygen gas the formula? Please could someone answer this?
Wednesday, June 2, 2010 at 9:21pm by A

wait, i think i did it wrong. there is actually 0.865 moles of CO2 from the O2. SO the limiting reagent is O2?
Sunday, December 11, 2011 at 6:07pm by Skye

I think maybe you better look up the solubility which is normally in grams or mols per liter but 36 grams in 100 grams is much higher than believable by any stretch of the imagination. A liter of fresh water is about a 1000 grams.
Saturday, March 8, 2014 at 2:03pm by Damon

I am currently balancing chemical equations. A few of them I am not sure if I correctly balanced or not, so could you check them over so I don't continue to do them wrong? C3H8+O2 yields CO2+H2O. I balanced it as 1C3H8+5 O2+4H2O. If this isn't right, could you explain what's ...
Tuesday, March 31, 2009 at 4:03pm by Misha

Okay, so this is how I think I should set it up? can you confirm it at least. Anyways I would try to find moles of O2 using ideal gas law (1.00 atm)(0.283)/(0.0821)(298) = n moles O2. then I would multiply 0.208 by the 1 L of water?? Then divide the moles of O2 / by L of water...
Saturday, February 20, 2010 at 7:39pm by david

What method would you use to find the number of moles and mass in grams for each situation listed: a. 750 cm3 O2 at 27C and 99.0 kPa b. 300 cm3 CO2 at -10.0C and 103kPa
Tuesday, January 24, 2012 at 12:22am by Sherika

Hi Brittney, The solution is as follows: Always start with the basic equation: H2 + O2 -----> H2O(l) Balancing the equation above gives: 2H2 + O2------> 2H2O(l) Since 200 molecules of H2 & O2 are involved,just multiply the equation above with 200, 200(2H2 + O2)---->...
Wednesday, October 9, 2013 at 2:29am by Swaastikaa

Given the following data: S(s) + 3/2 O2(g)-->SO3(g) ∆H = -395.2 kJ 2SO2(g) + O2(g) -->2SO3(g)∆H = -198.2 kJ Calculate ∆H for the reaction S(s) + O2(g) --> SO2(g) Could someone please tell me how you would go about doing this type of problem?
Tuesday, January 22, 2013 at 6:40pm by Eddie

Write and balance the equation. Stoichiometry problem are worked this way. 2H2 + O2 ==> 2H2O Convert 36 g H2O to moles. moles = grams/molar mass Using the coefficients in the balanced equation, convert moles H2O to moles H2 gas. Now convert moles H2 gas to grams. g = moles ...
Monday, March 1, 2010 at 11:21pm by DrBob222

Chemistry Help!
The reaction is O3 + NO arrow O2 + NO2 If 0.740 g O3 reacts w/ 0.670g of NO, how many grams of NO2 will be produced? I've tried to solve this. but I can't seem to get the right answer
Thursday, August 26, 2010 at 6:16pm by Amy~

C2H5OH + 3O2 --> 2CO2 + 3H2O How many grams of O2 are consumed when 5.86 ml of Ethanol burns completely (the density of C2H5OH is 0.789 g/ml)?
Thursday, February 16, 2012 at 8:19pm by Delta

How do you solve this: if 24.0 L of O2 burns completely a sample of carbon disulfide, how many grams of sulfur dioxide will be produced at 15 degrees celcius at a pressure of 1.3 atm? (the answer is 45.7 g). CS2 + 3CO2 -> CO2 + 2SO2
Sunday, March 17, 2013 at 11:39am by M

How do you solve this: if 24.0 L of O2 burns completely a sample of carbon disulfide, how many grams of sulfur dioxide will be produced at 15 degrees celcius at a pressure of 1.3 atm? (the answer is 45.7 g). CS2 + 3O2 -> CO2 + 2SO2
Sunday, March 17, 2013 at 12:45pm by M

Sulfur trioxide, SO3, is produced in enormous quantities each year for use in the synthesis of sulfuric acid. S(s) + O2(g) -> SO2(g) 2SO2(g) + O2(g) -> 2SO3(g) What volume of O2 (g) at 350 degrees Celsius and a pressure of 5.25 atm is needed to completely convert 5.00g ...
Saturday, April 17, 2010 at 12:03am by James

I am having trouble balancing this equation: C6 H12 06 + O2 = C7 H8 + O2 Can you please help? Thanks
Sunday, January 31, 2010 at 1:23pm by Joanie

I am having trouble balancing this equation: C6 H12 06 + O2 = C7 H8 + O2 Can you please help? Thanks
Sunday, January 31, 2010 at 1:24pm by Joanie

Ethene, also known as ethylene, is C2H4. The lower heating value (LHV) is 11,270 kcal/kg. You don't need that number to answer the question. The balanced reaction is C2H4 + 3 O2 -> 2 CO2 + 2 H2O 30 kmol/hr of ethene requires 90 kmol/hr of O2 for complete combustion. But ...
Wednesday, January 30, 2013 at 3:22am by drwls

Chem--typo last line
4Fe(OH)2 + O2 + 2H2O ==> 4Fe(OH)3 Stepwise: Balanced half cell for Fe is equn 1 is Fe^2+ ==> Fe^3+ + e O2 ==> 2OH^- O2 changes from zero to -4 on the right. Add 4e to the left side. O2 + 4e ==> 2OH^- Count up the charge. -4 on the left and -2 on the right. Add 2OH...
Tuesday, November 15, 2011 at 10:31pm by DrBob222

How many mols O2 were consumed? That's 0.250 L x (1 mol/22.4L) = ? mols O2. Use the coefficients in the balanced equation to convert mols O2 to mols MgO. Now convert mols MgO to g. g = mols x molar mass.
Monday, October 29, 2012 at 11:44pm by DrBob222

gen chem
Make it initial: NO = 0.1160 N2 = 0 O2 = 0 change: NO = -2x N2 = x O2 = x equilibrium: NO = 0.1160 - 2x N2 = x O2 = x and solve for x.
Sunday, May 9, 2010 at 3:42pm by DrBob222

Water can be decomposed to hydrogen and oxygen. How many grams of water must decompose to yield 24.0L og gases at 1.00atm and 25 degrees C? I used n=PV/RT to find 0.981 moles of gases. I then took the ratio of O2 to H2 to find the moles of oxygen compared to hydrogen. 0.327 ...
Thursday, December 8, 2011 at 10:42am by TJ

AP Chemistry
Because I worked it wrong. I read the problem as having H2 and asking how much oxygen and not how much H2. I already had volume O2. 2.96 L O2 x (2 mol H2/1 mol O2) = 2.96 x 2 = ? Sorry about that.
Sunday, October 13, 2013 at 2:59pm by DrBob222

Chemistry+Singe replacement
Balance the following equations if the reactions will occur. gold + oxygen Au + O2 --> ??????? barium + oxygen Ba + O2 --> ??? bismuth + oxygen --> Bi + O2 --> ??? help please. keep in mind this is single replacement
Monday, February 9, 2009 at 10:24pm by Chopsticks

And your problem is what? You find two sets of data in which XO is the same but O2 is different. Compare the change in concn with rate and determine order from that. Then pick another set where XO is not the same but O2 is the came (in concn), and go through the same procedure...
Tuesday, February 21, 2012 at 5:18pm by DrBob222

This is another example of Le Chatelier's Principle. As Damon points out, the CO binds with the hemoglobin and that prevents hemoglobin from binding with oxygen (because the CO-Heme bond is much stronger than the O2-Heme bond. When we breathe in, the CO2 rich hemoglobin forces...
Sunday, July 26, 2009 at 1:01am by DrBob222

Gaseous carbon monoxide reacts according to the balanced equation. If a total of 1040 kJ of heat is generated in the reaction as written, how many grams of CO2 are produced? enthalpy=-566kJ 2 CO(g) + O2(g) → 2 CO2(g)
Thursday, February 25, 2010 at 12:24pm by eng

If 11.53g hydrogen sulfide reacts with 3.97g oxygen gas in the following reaction: 2H2S + O2 + H2O which is the maximum mass of sulfur that can be produced? which is the limiting reactant ? which reactant is in excess ? by how many grams?
Sunday, May 23, 2010 at 4:17pm by Charile

Balance the equation. Determine from the coefficents the mole ratio. Given .506moles of NH3, how many moles of O2 do you need? Do you have that much, or more? If you do not have that much, then O2 is limiting, otherwise, you have an excess of O2 and NH3 is limiting. I will be ...
Friday, September 21, 2007 at 3:02pm by bobpursley

Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?
Thursday, November 11, 2010 at 12:05pm by Kristy

Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?
Thursday, November 11, 2010 at 1:53pm by Anne

how many grams of potassinum nitrate are produced from 81.6kg of potassinum chloride and 40.8 kg of hydrogen nitrate? 4KCl+4HNO3+O2------- 4KNO3+2Cl2+2H2O
Sunday, February 26, 2012 at 7:17pm by rk

4Fe(OH)2 + O2 + 2H2O ==> 4Fe(OH)3 Stepwise: Balanced half cell for Fe is equn 1 is Fe^2+ ==> Fe^3+ + e O2 ==> 2OH^- O2 changes from zero to -4 on the right. Add 4e to the left side. O2 + 4e ==> 2OH^- Count up the charge. -4 on the left and -2 on the right. Add 2OH...
Tuesday, November 15, 2011 at 10:31pm by DrBob222

rate of reaction (formatted repost)
I can't get my table to line up so I've surrounded the values in curly brackets. Experiment [SO2]i [O2]i IRD O2 {1} {0.05} {0.05} {7.3*[10^(-2)]} {2} {0.10} {0.05} {2.9*[10^(-2)]} {3} {0.10} {0.15} {2.6*[10^(-1)]} {4} {0.12} {0.12} {?????????????} so overall oreder is 4 or ...
Wednesday, July 20, 2011 at 2:55pm by j

A sample containing 5.20g O2 gas has a volume of 19.0L, pressure and temperature remain constant, Oxygen is released until the volume is 7.00L how many moles of O2 are removed I know i convert 5.20g to moles which give me 0.1625 moles of O2 and i use the P=nRT/V formula but i ...
Sunday, July 24, 2011 at 9:44pm by SHARON

Find the reaction quotient or Q. Q = (SO2)^2 x (O2)/(SO3)^2 Q = (0.480)^2(0.561)/(0.220)^2 Q = 2.67 Compare this to K = 0.23 in the problem. Q is to high meaning SO2 and O2 are too high and SO3 is too low; therefore, it much shift to the left to reach equilibrium. That way SO2...
Thursday, June 30, 2011 at 11:15pm by DrBob222

.........2SO2 + O2 ==> 2SO3 equil.....x.............2x At equilibrium, concns are (SO2) = (x/11.5) M (SO3) = (2x/11.5)M (O2) = y M Kc = 55.2 = (2x/11.5)^2/(x/11.5)^2*y Solve for y which gives (O2) in moles/L, then multiply by 11.5L to obtain moles. You can do it another way...
Saturday, December 31, 2011 at 11:49am by DrBob222

I don't think so. Mols SO2 = about 0.3 but mols SO3 will be what formed at 80% yield which is not 0.3. I have that as about 1.2 or so. Then O2 used in the reaction is 1/2 SO3 formed so that is about 0.6 (1.2 * 1.2) and that subtracted from the O2 initially is 1.08 - 0.6 = ...
Wednesday, October 8, 2008 at 5:12am by DrBob222

AP Chemistry
Add O2 on the product side and now balance the equation. CO2 + H20 -> C6H12O2 + O2
Thursday, October 7, 2010 at 7:36pm by TutorCat

What mass of KClO3 must be decomposed to KCl and O2 to give 638ml O2 at 18 degrees Celcius and 752torr?
Monday, June 11, 2012 at 9:25pm by Jeff

A 630. mL flask contains O2 at a pressure of 0.75 atm and a temperature of 20C. What mass of O2 is present?
Wednesday, February 26, 2014 at 3:01pm by Chelsey

Chem Help!!!!
I've thought about this for the last two hours and I don't think this is wrong. 0.771g Cr + 0.712g oxygen = 1.483g total. %Cr = (0.771/1.483)*100 = 51.99% %O = (0.712/1.483)*100 = 48.01% CrO, CrO2, Cr2O3, don't have these percentages. If the equation is 2Cr + O2 ==> 2CrO (...
Monday, February 25, 2013 at 1:22pm by DrBob222

College Chemistry
mols NO = grams/molar mass and convert that to pressure with PV = nRT. I get approximately 0.8 atm but you doit more accurately. USe PV = nRT to solve for mols O2 and convert that to pressure in the 1L container using PV = nRT. I get approximately 0.6 atm. ...........2NO + O2...
Tuesday, March 12, 2013 at 9:55pm by DrBob222

With what reaction? 2H2 + O2 ==> 2H2O 5.00 mols O2 x (2 mol H2O/1 mol O2) = 5.00 x 2/1 = 10 mols H2O produced.
Tuesday, March 25, 2014 at 8:02pm by DrBob222

Oxygen gas has formula O2. Each mole has a mass of 16*2 = 32 grams, since the atomic weight (molar mass) of an O atom is 16. Multiply that by your number of moles.
Friday, January 28, 2011 at 12:58am by drwls

Given the following equilibrium constants are given at 377C, 1/2 N2(g) + 1/2 O2(g) NO(g) K1 = 110−17 1/2 N2(g) + O2(g) NO2(g) K2 = 110−11 N2(g) + 3/2 O2(g) N2O3(g) K3 = 210−33 N2(g) + 2 O2(g) N2O4(g) K4 = 410−17 determine the values for the equilibrium...
Wednesday, February 13, 2013 at 11:49pm by Margaret

1. The amount of pyridoxine (in grams) per multiple vitamin is normally distributed with = 110 grams and = 25 grams. A sample of 25 vitamins is to be selected. So, 95% of all sample means will be greater than how many grams?
Wednesday, December 1, 2010 at 7:11pm by Anonymous

chemistry(just to double check)
The initial pressure for the compounds involved in the reaction displayed were determined to be P(SO2(g)) = 0.5932 atm, P(O2(g)) = 0.4886 atm, P(SO3(g)) = 0.09287 atm. Calculate the value of the equilibrium constant (Kp) at 1000 K if the equilibrium pressure of O2(g) was 0....
Tuesday, April 6, 2010 at 8:54pm by bme1

Gaseous arsine reacts according to the balanced equation. If a total of -3663 KJ of heat is produced in the reaction as written, how many grams of AsH3 are consumed? (Enthalpy= -1867.2) 2 AsH3(g) + 3 O2(g) --> As2O3(s) + 3 H2O(l)
Wednesday, February 27, 2008 at 10:17pm by Anonymous

What mass, in grams, of oxygen gas (O2) is contained in a 10.5 liter tank at 27.3 degrees Celsius and 1.83 atmospheres Trouble figuring out what formula to use to get the answer...want to understand how to get the right answer
Saturday, July 23, 2011 at 10:56pm by Anonymous

The weights of adult long-tongued fruit bats are known to be normally distributed with a mean of 20.22 grams and a standard deviation of 3.23 grams. What is the probability that a randomly selected bat will: a) weigh at most 15 grams? b) weigh less than 30 grams?
Wednesday, March 21, 2012 at 7:57pm by becky

The weights of adult long-tongued fruit bats are known to be normally distributed with a mean of 20.22 grams and a standard deviation of 3.23 grams. What is the probability that a randomly selected bat will: a) weigh at most 15 grams? b) weigh less than 30 grams?
Friday, March 23, 2012 at 2:15am by Becky

_Step 1:_ Balance the equation: _ NO + _ O2 = _ NO2 2.2mol NO requires ___mol O2 _Step 2:_ Use the molar mass of O2 to determine the mass of that amount. Using: Molar mass of O2 is 31.99886 0.00002 g/mol _Step 3:_ Repeat steps one and two to determine the amoung of NO2 ...
Tuesday, September 10, 2013 at 5:50am by Graham

If 16.9 kJ are released when 1.50 g of O2 reacts with an excess of NO, complete the thermochemical equation below. 4 NO(g) + 3 O2(g) 2 N2O5(g) Hrxn=???
Sunday, March 7, 2010 at 10:16pm by Tiffany

What mass of H2O is required to form 1.2 L of O2 at a temperature of 310 K and a pressure of 0.950 atm? 2H2O (l) ---> 2H (g) + O2 (g)
Tuesday, November 9, 2010 at 11:39pm by Lisa

Look at trial 1 versus 2. O2 is same concn; NO is doubled. What happens to the rate? It is 4x (0.0141 x 4 = 0.0564 so the reaction is second order with respect to NO. Now compare trial 2 versus trial 3. (NO) is constant while O2 changes by a factor of 2 (0.125 to 0.250). How ...
Wednesday, January 30, 2013 at 5:55pm by DrBob222

Octane has a density of 0.692 at 20degree C . How many grams of O2 are required to burn 17.0gal of C8H18 ? Step-by-step explanation much appreciated with as much detail as possible so I can understand. Thanks!
Sunday, September 16, 2012 at 4:59pm by M

Balance the equation C3H8 + _n_ O2 = 3 CO2 + 4 H2O mass(O2) = n * mass(C3H8) * molarmass(O2) / molarmass(C3H8)
Thursday, September 19, 2013 at 3:58pm by Graham

Ok, I really need to know how to work problems like these so could someone please show me how to set it up?! Given this data: 1. C(graphite) + O2(g) produces CO2(g), delta H = -393.5 kJ 2. H2(g) + 1/2 O2(g) produces H2O(l), delta H = -285.8 kJ 3. Ch3OH(l) + 3/2 O2(g) produces ...
Tuesday, November 23, 2010 at 4:52pm by lavonne

4.5 moles O2 is correct for that part but why did you multiply by 1 L? 1 mole O2 at STP is 22.4 L so 4.5 moles x 22.4 L = ?? volume in liters for O2. 1 mole of any ideal gas occupies 22.4 L at STP.
Saturday, July 10, 2010 at 5:30pm by DrBob222

Chemistry Honors
I need help balancing equations 1) CH4+O2-->CO2-->+H2O 2) Hf+N2-->Hf3N4 3) Mg+H2SO4-->MgSO4+H2 4) C2H6+O2 -->CO2+H2O 5) Pb(NO3)2 + NaI--> PbI2+NaNO3 6) Fe+O2-->Fe3O4
Wednesday, October 20, 2010 at 8:25pm by S

When the rate of the reaction 2NO+O2=2NO2 was studied, the rate was found to double when the O2 concentration alone was doubled but to quadruple when the NO concentration alone was doubled. Which of the following mechanisms accounts for these observations? a.) Step 1: NO + O2=...
Friday, March 14, 2014 at 3:10pm by Anonymous

I posted this question earlier, but I believe it was a bit confusing in the way I typed it. Given the following two step reaction: 4 P + 5 O2 -> P4O10 P4O10 + 6 H2O -> 4H3PO4 If you have 8.28 g of P, 15.65 g of O2, and 19.95 g of H2O, how many grams of H3PO4 can be ...
Friday, July 1, 2011 at 4:02am by Bradley

I interpret the problem a little differently than Steve. 273 nmols/mL x 2 mL = total nmols O2. Then nmoles atomic O2 is twice that so 4*273 = ? nanomols atomic O2. (or we could say that technically there are NO O atoms since all are tied up as molecules). However, I think the ...
Tuesday, March 26, 2013 at 2:09pm by DrBob222

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4Al(s) + 3O2(g) -> 2Al2O3(s) 4mol Al, 2.6mol O2? a) 4mol Al, b) 2.6mol O2. I seriously have no idea what they are asking! What do you do with the 4mol Al & 2.6mol O2...
Monday, October 15, 2007 at 3:35am by K

Chemistry (Regents level)
1- In the reaction Fe2O3 + 3 CO = 2 Fe + 3 CO2, what is the total number of moles of CO used to produce 112 grams of iron? a) 1.0 b)2.0 c)3.0 d)4.0 2- Given the reaction: 4Al + 3O2 = 2Al2O3 How many moles of Al2O3 will be formed when 27 grams of Al reacts completely with O2? a...
Saturday, February 23, 2008 at 2:04pm by Jessica

how would you go about calculating the change in H' of the reaction 2N2O <-> 4NO2+O2 if you are given the H'of formation for N2O and NO2 but not the H' of formation for O2? is H' of O2 zero? if so why? and also how can you tell to use change in S'=sum(npS'p) - sum(nrS'r...
Monday, April 19, 2010 at 4:19pm by john

4 Fe(s) + 3 O2(g) 2 Fe2O3(s) ΔH = -1652 kJ How much heat is released when 3.82 mol iron is reacted with excess O2?
Sunday, March 13, 2011 at 4:58pm by suzy

given the following equation 2ClO3---> 2 KCl + 3 O2 what volume does O2 occupied, at STP, if 34.0g of KClO3 reacts?
Sunday, December 11, 2011 at 6:01pm by Anonymous

Chemistry- Empirical Formula
Yes and no. Yes, you can convert 6.63 mg to grams, go through the calculation and convert grams back to mg but I didn't convert in the first place so I had no reconverting to do. Another way is to convert 6.63 mg to grams, go through the calculation and have the answer for H ...
Monday, April 19, 2010 at 9:36pm by DrBob222

what is the numerical value of the equilibrium constant Kgoal for the reaction CO2(g) C(s) +O2(g)? by making use of the following information: 1. 2CO2(g)+2H2O(I) = CH3COOH(I)+2O2(g), K1=5.40x10^-16. 2. 2H2(g)+O2(g) = 2H2O(I), K2=1.06x10^10. 3. CH3COOH(I) - 2C(s)+2H2(g+O2(g), ...
Wednesday, March 9, 2011 at 2:51am by gin - More info to initial question. Please help

60.0 g O2=___________molecules O2
Monday, December 17, 2012 at 11:35pm by Anonymous

Given this equation: 2P2O5 + 6H2O ---> 4H3PO4. If you begin with 4.8 grams of p2o5 and 15.2 grams h20, what will be your limiting reactant. I got the answer to that and it is P2O5. (6.6 grams) and H2O was 55.2 grams. so the limiting reactant P2O5. Then the next question is ...
Tuesday, February 5, 2008 at 3:09pm by Franki

Chemistry 106
moles = grams/molar mass. Convert 1.50 kg to grams = 1,500 grams.
Monday, October 18, 2010 at 8:22pm by DrBob222

If 5.0 grams of Zinc were added to 35.0 grams of H2SO4, how many grams of hydrogen gas would be evolved?
Tuesday, November 19, 2013 at 9:40pm by Elizabeth

Chemistry Cell notations
Okay so the problem I had with this is like...I did't understand that when it was written say on the left of the double vertical line how you know H2O --> O2 + H+ will it always be written in the order of how you write the reaction? or like could you also right it like O2...
Thursday, December 2, 2010 at 10:42pm by Confused

How many grams of water can be made by the reaction of 1.25 grams of ethanol with 2.50 grams of oxygen?
Thursday, April 8, 2010 at 9:22pm by Lacy

if i mix 4 grams of hydrogen and 32 grams of oxygen how many grams of water would be produced
Monday, May 24, 2010 at 2:24pm by kee

College Chemistry
150 grams of aluminum,250 grams of iron, 350 grams of lead?
Monday, February 13, 2012 at 6:42pm by Wanda

Suppose you mix 50 grams of CO and 10 grams of H2. How many grams of methanol can be produced?
Thursday, July 26, 2012 at 7:57am by james

How many grams of water must decompose to produce 2 grams of hydrogen and 16 grams of oxygen?
Wednesday, January 23, 2013 at 6:10pm by Anonymous

C2H5OH + 3O2 ==> 2CO2 + 3H2O mols ethyl alc = grams/molar mass = about 0.319 mols O2 = 22.5/32 = about 0.7 but that's an estimate only. Using the coefficients in the balanced equation, convert mols ethyl alcohol to mols CO2. That's approximately 0.64 Do the same for mols O2...
Tuesday, March 26, 2013 at 11:53pm by DrBob222

I was given a question on an assignment and I can't figure it out. The question is A student collects 90ml of oxygen gas over water at 25c and a total pressure of 99.3kPa from the decomposition of KClO3. 2KClO3(s)-> 2KCl(s)+ 3O2 a) How many mols of O2 were collected? b)How ...
Saturday, March 6, 2010 at 11:08pm by Krissy

CH4 + 2O2 = CO2 + 2H2O Starting with 13.6 g of CH4, calculate the mass in grams of CO2 produced if there is enough O2 gas to react with all of the CH4
Monday, October 3, 2011 at 12:25pm by Kayla

Use the equations with the enthalpy information given below to calculate the H for the reaction: S(s) + O2(g) --> SO2(g) S(s) + 3/2 O2(g) --> SO3(g) H = -395kJ 2 SO2(g) + O2(g) --> 2 SO3(g) H = -198.2 kJ
Monday, November 14, 2011 at 7:14pm by Anonymous

College Chemistry Help Please!
if i have 1.00 grams of N2 in 0.180 grams of H2 how many grams of NH3 is produced
Tuesday, November 9, 2010 at 2:04pm by nicklas

a 500ml sample of o2 gas at 24 degrees celsius was prepared by decomposing a 3% aqueous solution of hydrogen peroxide, in this presence of a small amount of manganese catalyst by the reaction 2H2O2>2H2O+O2. The oxygen thus prepared was collected by displacement of water. ...
Monday, April 16, 2012 at 4:10pm by Michelle

O2 is the limiting reagent so convert the moles of C8H16 to moles of O2 and then convert the moles of O2 to moles of H2O
Tuesday, December 14, 2010 at 8:37pm by TutorCat

These are the answers I got for the following problems - am I right? 1) How many grams of water, H2O, and propene, C3H6, can be formed from the reaction of 6.0 g of 2-propanol, C3H8O? C3H8O ----> C3H6 + H2O 1.8g H2O and 4.2g C3H6 2) How many moles of water, H2O, can be ...
Sunday, November 29, 2009 at 12:53pm by Mary

How many grams of ZnCl2 will be produced from 48 grams of zinc and 30 grams of HCL
Tuesday, March 26, 2013 at 7:27pm by walter

The combustion of carbon monoxide is represented by the equation below: CO (g) + 1/2O2 (g) ----> CO2 (g) a) determine the value of the standard enthalpy change, for the combustion of CO at 298 K using the following info. C (s) + 1/2 O2(g) ----> CO (g) delta H at 298K = -...
Tuesday, October 9, 2007 at 5:32pm by Nick

Hemoglobin (Hb) in the blood absorbs oxygen to form oxyhemoglobin [Hb(O2)2], which transports oxygen to the cells. The equilibrium can be generally represented by the following (though it is actually composed of a series of equilibria in which Hb binds from between 1 and 4 O2 ...
Sunday, April 1, 2012 at 3:54pm by Laffy Taffy

hi i have difficulty in this question.any help would be much appreciated. 1) a mixture of 0.0080 mol of So2(g) and 0.0056mol of O2(g) is placed in one liter container at 100K. when equilibrium is established, 0.0040 mol of So3(g)is present 2SO2(g)+O2(g)->2So3(g) <- a) ...
Thursday, December 31, 2009 at 12:14am by hrithik

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