Monday
April 21, 2014

Search: N2H4(g) + H2(g) 2 NH3(g)

Number of results: 5,610

Chemistry
Some N2 and H2 are placed in an empty 5.00 liter container at 500 degree celcius. When equilibrium is established, 3.0mol N2, 2.40mol H2 and 0.565mol of NH3 are present. Evaluate Kc for the reaction at 500 degree celcius.
Saturday, February 1, 2014 at 4:05am by Adigun

Chemistry
Some N2 and H2 are placed in an empty 5.00 liter container at 500 degree celcius. When equilibrium is established, 3.0mol N2, 2.40mol H2 and 0.565mol of NH3 are present. Evaluate Kc for the reaction at 500 degree celcius.
Saturday, February 1, 2014 at 4:06am by Adigun

chemistry
When 1.0 mol of ammonia gas in injected into a o.50L flask, the following reaction proceeds to equilibrium. 2NH3 <--> N2 (g) + 3H2 (g) At equilibrium, 0.30 mol of hydrogen gas is present. a) calculate the equilibrium concentrations of N2 and Nh3. b) what is the value of ...
Sunday, November 26, 2006 at 2:39pm by Luke

colllege chemistry
for the haber process for the synthesis of ammonia: N2(g)+ 3H2(g)= 2NH3(g), what is ΔG (kJ/mol) at298 K for a reaction mixture that consists of 1.5 atm N2,3 atm H2 and 1.8 atm NH3? [ΔG f(NH3)= -16.66kJ/mol]
Monday, December 6, 2010 at 12:17pm by ramona

chemistry
In the reaction of N2 and H2 to produce NH3, how many moles of N2 will produce 25.9 moles NH3?
Sunday, February 12, 2012 at 7:01pm by Anonymous

chemistry
Find the temperature at which the reaction below is spontaneous given this data: Hfo of NH3(g) = - 46 kJ/mol, So of NH3(g) = 192.5 J/mol·K, So of N2(g) = 191.5 J/mol·K, So of H2(g) = 130.6 J/mol·K. N2(g) + 3H2(g) 2NH3(g)
Saturday, April 19, 2008 at 11:08am by Ericka

chemistry
Find the temperature at which the reaction below is spontaneous given this data: Hf^o of NH3(g) = - 46 kJ/mol, S^o of NH3(g) = 192.5 J/mol·K, S^o of N2(g) = 191.5 J/mol·K, S^o of H2(g) = 130.6 J/mol·K. N2(g) + 3H2(g) <-----> 2NH3(g)
Saturday, April 19, 2008 at 10:05pm by Amandeep

chemistry
1. Write the equation and balance it. 2. You can use liters directly to determine how much NH3 is made (atSTP). 3. Identify the limiting reagent. The easy way to do this is to determine liters NH3 from 2.00 L N2. Then determine liters NH3 from 5.00 L H2. The SMALLER value will...
Monday, April 12, 2010 at 9:22pm by DrBob222

Chemistry
NH3(g)->N2(g)+3/2H2(G)=+45.9KJ(*1/2)and reversed CH4(g)->C(graphite)+2H2(g)=+74.9KJ reversed 1/2H2(g)+C(graphite)+1/2N2(g)-> HCN(g)=+135.1KJ Cancel out C(graphite)and 1/2N2(g) on opposite sides of the reaction. NH3(g)->H2(g)+1/2H2(g)=+45.9KJ (simplified H2(g)with a...
Sunday, October 31, 2010 at 4:05pm by Desmond

Chemistry
NH3(g)->N2(g)+3/2H2(G)=+45.9KJ(*1/2)and reversed CH4(g)->C(graphite)+2H2(g)=+74.9KJ reversed 1/2H2(g)+C(graphite)+1/2N2(g)-> HCN(g)=+135.1KJ Cancel out C(graphite)and 1/2N2(g) on opposite sides of the reaction. NH3(g)->H2(g)+1/2H2(g)=+45.9KJ (simplified H2(g)with a...
Sunday, October 31, 2010 at 4:05pm by Desmond

11th grade chemistry
HoW DO YOU BaLaNCeD EQUAtION OF H2+N2=NH3
Thursday, November 20, 2008 at 7:03pm by Anonymous

Chemistry
write the balanced equation N2+3(H2)--> 2(NH3)
Wednesday, March 3, 2010 at 9:34pm by Chae

chemsitry
calculate Delta H of RXN 2 N2 (g) + 3 H2( g) ->2 NH3 (g)
Saturday, November 13, 2010 at 6:50pm by Sarah

Chemistry
If 30.0 g of H2 were used, how many grams of NH3 would be made?
Saturday, December 11, 2010 at 5:14pm by Stephanie

Chemistry
If you have 1.80 moles of H2, how many gram of NH3 can be produced?
Wednesday, October 31, 2012 at 9:19pm by Heather

chemistry
How many grams of H2 are needed to produce 10.75g of NH3?
Monday, October 14, 2013 at 2:27pm by kristy

Chemistry help
How many grams if nh3 can be produced from 2.57mol of n2 and excess h2?
Wednesday, February 19, 2014 at 12:53pm by Gullible

Chemistry
How many grams of H2 are needed to produce 12.88g of NH3?
Wednesday, February 19, 2014 at 12:57pm by Gullible

Chemistry
How many molecules (not moles) of NH3 are produced from 3.65x10-4g of H2?
Wednesday, February 19, 2014 at 1:01pm by Gullible

Chemistry
The HNO3 reacts with NH3. HNO3 + NH3 ==> NH4NO3. This results in taking away the NH3 so the complex Cu(NH3)4^+2 can't form.
Thursday, June 10, 2010 at 3:30am by DrBob222

Chem--PLEASE HELP 911
A is ok. Good work. B is not right. For example, N and H are OK but I see 4 Cl on the left and 12 on the right. I see 12 O on the left and 18 on the right. ClO3^- ==> Cl^- Cl is +5 on the left and -1 on the right, so ClO3^- + 6e ==> Cl^- I see -7 charge on the left; -1 ...
Thursday, April 25, 2013 at 12:22pm by DrBob222

chemistry
First, what is the molarity of the household ammonia solution? Density = 0.97 g/mL so a liter has a mass of 0.97 g/mL x 1000 mL = 970 grams. How much of that is NH3? It is 970 g x 0.068 = xx grams NH3. How many moles is that? xx grams NH3/molar mass NH3 = yy moles NH3/L which ...
Sunday, March 28, 2010 at 5:27am by DrBob222

chem.
Hey this is my question: At a temperature of 300C and a pressure of 40.5 MPa, 90.0 mol of H2(g) and 80.0 mol of N2(g) are injected into a reaction vessel. When equilibrium is established, 37.0 mol of NH3(g) are present. The number of moles of H2(g) present in this equilibrium...
Sunday, June 18, 2006 at 6:11pm by yo!

chemistry
for the complex ion equilibria between AgCl and NH3, why does NH3 replace Cl- and how do we know that we have to add 2 infront of NH3? Is the product a salt compound? Ag + 2NH3= Ag(NH3)2+
Thursday, November 11, 2010 at 12:55am by flame

chemistry
for the complex ion equilibria between AgCl and NH3, why does NH3 replace Cl- and how do we know that we have to add 2 infront of NH3? Is the product a salt compound? Ag + 2NH3= Ag(NH3)2+
Thursday, November 11, 2010 at 2:14am by flame

Chemistry
1 N204(l) + 2 N2H4(l) --> 3 N2(g) + 4 H2O(g) If you start with: 5.0 x 10^4 g hydrazine (N2H4) "in the tank": 1) How many moles of nitrogen can be created (assuming 100% yield)? 2) How many moles of water can be produced? 2) What mass of dinitrogen tetroxide (N2O4) is needed...
Tuesday, November 23, 2010 at 7:07pm by Lauren K.

chemistry
1K2PtCl4+2(NH3)->1Pt(NH3)2Cl2+2KCl what is the percent yield, when 34.5 grams of NH3 react with excess K2PtCl4 if 76.4 g of Pt(NH3)2Cl2 are actually produced?
Saturday, November 10, 2012 at 2:30pm by kelly

chemistry
Which of the following molecules is polar? 1. CH4 2. BH3 3. NH3 4. CF4 5. H2
Tuesday, March 16, 2010 at 7:15pm by demi

chemistry
How many grams of NH3 are produced when 5.40g of H2 react with an excess of N2?
Tuesday, November 2, 2010 at 1:06am by Travis

ap chem
Qc = (NH3)^2/(H2)^3(N2) Substitute the numbers and solve.
Sunday, February 13, 2011 at 6:20pm by DrBob222

Chemistry
How many molecules (not moles) of NH3 are produced from 8.9210−4 g of H2?
Sunday, November 6, 2011 at 11:36pm by Matthew

chemistry
if 2.2g of h2 and 1.25g of n2 are present, how many grams of nh3 will be produced
Thursday, December 8, 2011 at 3:19am by adam

Chemistry
How many moles of NH3 can be produced from 19.5mol of H2 and excess N2
Wednesday, October 9, 2013 at 2:35pm by Capri

Chemistry
1 N204(l) + 2 N2H4(l) --> 3 N2(g) + 4 H2O(g) If you start with: 5.0 x 10^4 hydrazine (N2H4) "in the tank": 1) How many moles of nitrogen can be created (assuming 100% yield)? 2) How many moles of water can be produced? 2) What mass of dinitrogen tetroxide (N2O4) is needed? ...
Tuesday, November 23, 2010 at 6:46pm by Lauren K.

Chemistry
#1. You are calculating the heat from heating bricks when N2H4 burns. You get a positive number because you are adding heat to the bricks; that is the same as the heat RELEASED by burning N2H4. Delta H for burning N2H4 is (heat released) negative. #2. You are burning coal. The...
Sunday, November 14, 2010 at 5:03pm by DrBob222

Chemistry
ZnCl2 and excess NH3 forms the ammine complex Zn(NH3)4Cl2 Cu ion reacts with NH4OH to form Cu(NH3)4^2+ complex ion. NH3 and ZnSO4 does the same as ZnCl2 except it's Zn(NH3)4SO4 and not Zn(NH3)Cl2
Sunday, April 8, 2012 at 10:33pm by DrBob222

chemistry
Write the two balanced equations and see. 2H2 + O2 ==> 2H2O 3H2 + N2 ==> 2NH3. Use a convenient number of moles H2 to start (say 2 moles but you can pick any number as long as you use the same number for both equations). How much water will we get (in moles). 2 moles H2 ...
Sunday, April 11, 2010 at 4:06pm by DrBob222

stoichiometry
6mols of N2 are mixed with 12mol H2, according to the following equation. N2+3H2----> 2NH3 a) which is the limiting reactant? B) which chemical is in excess? c) how many moles of excess reactant is left over? d) how many moles of NH3 can be produced? e)if only 6.4 mols of ...
Wednesday, March 23, 2011 at 10:58pm by jairo sanchez

stoichiometry
6mols of N2 are mixed with 12mol H2, according to the following equation. N2+3H2----> 2NH3 a) which is the limiting reactant? B) which chemical is in excess? c) how many moles of excess reactant is left over? d) how many moles of NH3 can be produced? e)if only 6.4 mols of ...
Wednesday, March 23, 2011 at 10:59pm by jairo sanchez

stoichiometry
6mols of N2 are mixed with 12mol H2, according to the following equation. N2+3H2----> 2NH3 a) which is the limiting reactant? B) which chemical is in excess? c) how many moles of excess reactant is left over? d) how many moles of NH3 can be produced? e)if only 6.4 mols of ...
Wednesday, March 23, 2011 at 11:00pm by Anonymous

Chemistry
Calculate the enthalpy change, ΔrH, for the following reaction, 4 NH3 (g) + 5 O2(g) → 4 NO (g) + 6 H2O (g) given the thermochemical equations below. N2 (g) + O2 (g) → 2 NO (g) ΔrH = +181 kJ N2 (g) + 3 H2 (g) → 2 NH3 (g) ΔrH = 91.8 kJ...
Sunday, October 2, 2011 at 3:54am by Hannah

chemistry
OF THE FOLLOWING SUBSTANCES, WHICH HAS THE LARGEST AVERAGE SPEED AT 25DEGREES. CO, NH3,H2,N2?
Saturday, April 30, 2011 at 7:07pm by Joe

chemistry
close but not quite. Yes, zero moles NH3. Yes, 0.1875 = 0.188 mole N2H4. No, N2. You USE 0.0625 moles N2, you had 0.100 initially; therefore, the amount remaining is 0.100 - 0.0625 (you are allowed three significant figures so I would not round that to 0.063).
Monday, November 14, 2011 at 11:09am by DrBob222

chemistry
AgBr==> Ag^+ + Br^- Ag^+ + 2NH3 ==> Ag(NH3^+ eqn 1..Ksp = (Ag^+)(Br^-) Kf = [Ag(NH3)2^+]/(Ag^+)(NH3)^2 Let S = solubility, then eqn 2..S = (Br^-) = (Ag^+) + [Ag(NH3)2^+] eqn 3..3.9 = (NH3) + (NH4^+) + 2[Ag(MH3)2^+] Three equations as above. 1..as is 2..(Ag^+)<< [Ag...
Friday, November 4, 2011 at 1:51am by DrBob222

AP Chemistry
For the reaction ? N2H4+? O2 →? N2+? H2O , what is the maximum amount of N2 (28.0134 g/mol) which could be formed from 14.75 g of N2H4 (32.0452 g/mol) and 4.31 g of O2 (31.9988 g/mol)? Answer in units of g
Wednesday, September 19, 2012 at 8:30pm by Lacey

Chemistry
An experiment was done to determine the formula and formation constant of a metal ammine. The data were graphed giving a straight line plot with an equation of y = -5.9484x - 11.447. What is the correct forum_search_20140419la for this metal amine? M(NH3)6+ M(NH3)5+ M(NH3)4+ M...
Sunday, October 16, 2011 at 7:41pm by Matt

chemistry
An experiment was done to determine the formula and formation constant of a metal ammine. The data were graphed giving a straight line plot with an equation of y = -5.9484x - 11.447. What is the correct forum_search_20140419la for this metal amine? M(NH3)2+ M(NH3)5+ M(NH3)6+ ...
Monday, March 5, 2012 at 10:31pm by Anonymous

CHEMISTRY
A concentration cell is constructed of two hydrogen electrodes. The pressure of H2 is 1.00 atm in each hydrogen electrode. One of the electrodes is immersed in a solution with [H+] = 1.0 M and the other in a solution with 0.62 M NH3. What will be the value of Ecell? (Hint: ...
Saturday, December 1, 2012 at 12:11am by sabrina:help please

Chemistry
it says: calculate the number of grams of NH3 produced when 21.0 g of H2 react with N2.
Thursday, January 21, 2010 at 5:51pm by Judy

chemistry
The subject is stoichiometry. How many moles of NH3 can be produced from 12.0mol of H2 and excess N2?
Saturday, September 14, 2013 at 6:59pm by BeeBee

chemistry
3H2+N2=2NH3 if 2.70 g of H2 reacts with jugful of N ,how many grams of NH3 is formed?
Sunday, February 2, 2014 at 12:08pm by Anonymous

chemistry
2NH3 + 2Na ==> 2NaNH2 + H2 Step 1. Write and balance the equation, as above. 2. I will do this for both reactants and you can take your pick. a. Convert grams NH3 to moles. moles = grams/molar mass. b. Convert grams Na to moles. moles = grams/molar mass. 3a. Using the ...
Thursday, March 11, 2010 at 9:52pm by DrBob222

Chemistry
Reaction of hydrazine with chlorate ions N2H4(g) + ClO3-(aq) → NO(g) + Cl-(aq) Balanced: 3N2H4(g) + 4ClO3-(aq) → 6NO(g) + 6H2O(l) + 4Cl-(aq) Reducing agent: ClO3- Oxidizing agent: N2H4 Right?
Friday, June 21, 2013 at 7:11pm by Sara

Chemistry
Balanced Chemical Equation: 1 N204(l) + 2 N2H4(l) --> 3 N2(g) + 4 H20(g) If you start with: 5.0 x 10^4g hydrazine (N2H4) "in the tank": 1) How many moles of nitrogen can be created (assuming 100% yielded)? 2) How many moles of water can be produced? 3) What mass of ...
Friday, November 19, 2010 at 6:22pm by Roger

Chemistry
Balanced Chemical Equation: 1 N204(l) + 2 N2H4(l) --> 3 N2(g) + 4 H20(g) If you start with: 5.0 x 10^4g hydrazine (N2H4) "in the tank": 1) How many moles of nitrogen can be created (assuming 100% yielded)? 2) How many moles of water can be produced? 3) What mass of ...
Friday, November 19, 2010 at 6:56pm by Roger

Chemistry
I think it helps to draw a picture. ......Zn^2+ + 4NH3 ==> Zn(NH3)4 + E......x......0.3109...0.22 The problem gives the equilibrium conditions; therefore, you need not worry about a reaction. Kf = [Zn(NH3)4}^2+/(Zn^2+)(NH3)^4 (Zn^2+) = x [Zn(NH3)4]^2+ = 0.22M (NH3) = 0.3109...
Monday, March 18, 2013 at 7:49pm by DrBob222

Chemistry
N2 + 3H2 ==> 2NH3 This is a limiting reagent problem because amounts are given for BOTH reactants. mols N2 = grams/molar mass You don't give a pressure for H2 but at STP, 1 mol occupies 22.4L; therefore you have 44,000/22.4L = ? mols. Convert mols N2 to mols NH3. Convert ...
Monday, March 4, 2013 at 7:17pm by DrBob222

Chemistry
find the reaction quotient: partial pressures are: p of N2=.903, P of H2=.888, P of NH3=.025
Sunday, October 31, 2010 at 7:36pm by Anne

Chemistry
find the reaction quotient: partial pressures are: p of N2=.903, P of H2=.888, P of NH3=.025
Sunday, October 31, 2010 at 7:40pm by Anne

chemistry
1.04 g H2 reacts with 10.2 g N2 producing 2.71 g NH3, what is the theoretical yield in grams?
Sunday, June 19, 2011 at 1:11pm by Theoretical yield

Chemistry/Stoichiometry
How many liters of H2 are needed to produce 2.00g of NH3? N2+3N2 ---> 2NH3
Tuesday, January 10, 2012 at 5:41pm by Marianna

Chemistry
Is this the correct equation for the formation of [Co(NH3)5(ONO)]^2+ from [Co(NH3)5Cl]^2+ ... [Co(NH3)5Cl]^2+ + NO2 --> [Co(NH3)5(ONO)]^2+ + Cl- I'm a bit unsure because the charges don't balance
Wednesday, April 8, 2009 at 7:18am by Alice

chemistry
What the problem means is that the solubility is increased due to the formation of the Cu(NH3)4^+2 ion and in fact that concn is greater than that of the Cu^+2 by itself. Here is what I would do. Cu(OH)2 ==> Cu^+2 + 2OH^- Cu^+2 + 4NH3 ==> Cu(NH3)4^+2 Write the Ksp ...
Monday, April 4, 2011 at 1:35am by DrBob222

chemistry
yes. Q = (NH3)^2/(N2)(H2)^3 = 4.34E-3 In general, A is true. For Q to be small, the numerator must be small and the denominator must be large. The only way you get that is for the products to be small and the reactants to be large(r). It's easier to answer questions like this ...
Monday, October 25, 2010 at 1:34pm by DrBob222

chemistry
Ammonia is NH3. 0.750 mols H atoms x (1 mol NH3/3 mol H atoms) = 0.250 mol NH3 Then g NH3 = mols NH3 x molar mass NH3 = 0.250 x 17 = ?
Saturday, February 22, 2014 at 10:55am by DrBob222

chemistryy
NH3 + HCl ==> ?? moles HCl = M x L moles NH3 = moles HCl since the reaction of NH3 with HCl is 1 mole to 1 mole. Then molarity NH3 = moles NH3/L NH3. Post your work if you get stuck. .
Thursday, March 26, 2009 at 9:36pm by DrBob222

Analytical Chemistry
This is how I would go about solving this problem. moles of NH3 in sample= 0.1072M * 29.32 x 10^-3L=3.14 x 10^-3 moles of NH3. Remember, the mole ratios are equal since it takes one mole of NH3 to react with one mole of HCl. 3.14 x 10^-3 moles of NH3*(17.031g NH3/ 1mole)= mass...
Thursday, February 28, 2013 at 5:04pm by Devron

Chemistry
2Na + 2H2O ==> 2NaOH + H2 mols Na = grams/molar mass Using the coefficients in the balanced equation, convert mols Na to mols H2. Now convert mols H2 to molecules H2. There are 6.02E23 molecules in 1 mol H2. And you have ///// mols H2.
Thursday, January 24, 2013 at 5:39pm by DrBob222

Chemistry
First we get the mass of NH3 (ammonia) in the concentrated NH3 solution, by using the relationship between density, mass and volume: d = m/V 0.88 = m/28.2 m = 24.816 g Since ammonia is only 28% of this mass, m,NH3 = 24.816 * 0.28 m,NH3 = 6.9485 g NH3 Then we change this to ...
Monday, October 7, 2013 at 11:42am by Jai

Chemistry
a) NH3 + H2O ==> NH4 + OH^- Kb = (NH4^+)(OH^-)/(NH3) (NH4^+) = y (OH^-) = y (NH3) = 0.1 - y Plug into Kb and solve for y. b) NH4Cl + HOH ==> NH4^+ + Cl^- The NH4^+ hydrolyzes as follows: NH4^+ + H2O ==> NH3 + H3O^+ Ka = Kw/Kb = (NH3)(H3O^+)/(NH4^+) (NH3) = y (H3O...
Friday, September 26, 2008 at 9:39am by DrBob222

chemistry
You mean magnesium NITRIDE. Magnesium nitrate is Mg(NO3)2 and it does not produce NH3 when reacted with H2O. Convert 355 mL NH3 to moles. moles = L/22.4 = ? moles NH3. Convert moles NH3 to moles Mg3N2 using the coefficients in the balanced equation. ?moles NH3 x (1 mole Mg3N2/...
Thursday, December 1, 2011 at 2:39pm by DrBob222

Chem 104
The reaction of 2.30g N2 with excess H2 produces 2.00g NH3. The percent yield of this reaaction is?
Thursday, July 21, 2011 at 11:15pm by Zoria

Chemistry
NH2^- + HOH ==> NH3 + OH^- Set up ICE chart with NH3 = x and OH^- = x so NH2^- = your molarity -x Solve for x. Kb = (Kw/Ka) = (NH3)(OH^-)/(NH2^-) That gives you NH3, OH, you have NH2^- and K^+ is same as NH2^-.
Monday, February 22, 2010 at 7:18pm by DrBob222

chemistry
Determination of Kf of Cu(NH3)4 (aq) with given 10mL of 6M NH3 mix with 40mL of 1M Cu. This is what I have so far: nCu= .040L x 1= .040mol nNH3= .010L x 6= .060mol Cu^2+ + 4NH3 -> Cu(NH3)4 .040 .06 0 -.040 4(-.040) +.040 0 -.1 .040 [Cu(NH3)]= .040/(.010+.040)=.80M for Kf=[...
Thursday, October 24, 2013 at 12:09am by slamj

science(chem)
percent weight/weight is, in this case, 64 g hydrazine in 100 g SOLUTION. IF, and only if, the density of that solution is 1.00 can that be 100 mL and then it is 100 mL solution and not 100 mL H2O. Since the density of hydrazine is 1.01, I suspect the density of the solution ...
Sunday, May 4, 2008 at 2:30pm by DrBob222

Chemistry
1.Write the equations for AgCl, Ag(NH3)2, and NH3. For example, AgCl ==> Ag^+ + Cl^-, Ag^+ + 2NH3 ==> Ag(NH3)2^+ , and the NH3 + H2O ==> NH4^+ + OH^- 2. Write the Ksp for AgCl, Kb for NH3, and Kformation for Ag(NH3)2. 3. Solubility AgCl = (Cl^-) = (Ag^+) + [Ag(NH3)2...
Sunday, April 5, 2009 at 6:51pm by DrBob222

chemistry 12
The error is you divided by 0.12 twice; once is all that is needed AND you didn't take the square root. N2H4 + HOH ==> N2H5^+ + OH^- Kb = (N2H5^+)(OH^-)/(N2H4) 3.0E-6 = (x)(x)/(0.12) x^2 = sqrt(3.0E-6*0.12) I obtained 6.0E-4 for OH^- Then %ion = [(OH^-)/(0.12)]*100 = ? I ...
Wednesday, October 5, 2011 at 3:29pm by DrBob222

chemistry
50.0 mL of a 0.00200 M Cd^2+ solution is titrated with 0.00400 M EDTA in the presence of 0.0750 M NH3 buffered at pH = 9.00. Determine pCd^2+ when 28.5 mL of EDTA solution have been added. Cd^2+ + Y^4- ? CdY^2- Kf= 3.16 x 10^16 Cd^2+ + NH3 ? CdNH3^2+ 1 = 3.24 x 10^2 Cd^2+ + 2...
Tuesday, August 13, 2013 at 5:22am by raghu

chemistry
Suppose the following: HO-C(H2)-C(H2)-OH + 2 HI --> I-C(H2)-C(H2)-I + water How many mL of the first compound* are needed to react with 9.3 grams of HI? (The density of the first compound is A = 1.11 g/mL) *by first compound, i mean HO-C(H2)-C(H2)-OH
Friday, September 2, 2011 at 8:12pm by kc

Chemistry
No. NH3 is neutral. The NH3 is a compound and all compounds are zero charge. NH3 is a gas but we usually use it dissolved in water.
Wednesday, May 13, 2009 at 11:21pm by DrBob222

Chemistry
Decide which of the substances listed can form hydrogen bonds? H20 H2O2 HF NH3 NaF H2 NO CH4
Sunday, March 22, 2009 at 9:50am by Taylor

chemistry
Your word problem isn't complete. It doesn't list the product; however, I've included that in the equation. N2 + H2 ==> NH3 You balance it.
Sunday, January 8, 2012 at 12:57pm by DrBob222

Chemistry
3 N2H4(g)+N2O4(g) 4 N2(g) + 4H2O(g) + 2 H2(g) ∆H= -1310 kJ (-312 kcal) How much energy is produced per mole of hydrazine burned? a. 13.6 kJ (3.25kcal) b. 40.9 kJ (9.75kcal) c. 437 kJ (104kcal) d. 1310 kJ (312 kcal)
Monday, August 13, 2012 at 6:38pm by Patsy

chemistry
first we write the chemical reaction: Al + HCl -> AlCl3 + H2 then we balance it: 2Al + 6HCl -> 2AlCl3 + 3H2 also we need to look for the masses of Al. from the periodic table, Al = 27 g/mol therefore, 54 g Al * (1 mol Al / 27 g Al) * (3 mol H2 / 2 mol Al) = 3 mol H2 or ...
Saturday, April 16, 2011 at 11:00am by Jai

Chemistry
Cu^+2 + 4NH3 ==> Cu(NH3)4^+2 Kf = [Cu(NH3)4^+2]/([Cu^+2][NH3]^4 Substitute into the above (in M units) and solve for )Cu^+) You can assume, with such a large constant, that [Cu(NH3)4^+2] = 0.01 and NH3 is about 0.4-(4*0.01) = about 0.36 So (Cu^+2) is about 1 x 10^-12M but ...
Sunday, October 24, 2010 at 6:54pm by DrBob222

Chemistry
Hydrogen gas,H2 , reacts with nitrogen gas,N2 , to form ammonia gas,NH3 , according to the equation 3H2+N2-2NH3 How many grams ofNH3 can be produced from 2.90mol ofN2 ? How many grams ofH2 are needed to produce 13.75g of NH3 ? How many molecules (not moles) ofNH3 are produced ...
Monday, October 5, 2009 at 8:03pm by Rose

Science
How many grams of hydrogen are produced from the decomposition of 100 grams of hydrogen peroxide? H2O2(l) → H2(g) + O2(g) a. 100 g H2 b. 50 g H2 c. 6 g H2 d. 1 g H2
Tuesday, December 6, 2011 at 9:26pm by Trish

chemistry
I applaud your writing a question with capital letters to begin sentences and placing comma's, periods, and questions marks appropriately. However, you need to sharpen those skills in writing equations since n2 and h2 have different meanings in lower case versus upper case. N2...
Monday, March 1, 2010 at 10:36pm by DrBob222

Chemistry
Nitrogen and hydrogen gases react to form ammonis gas as follows: N2(g)+3H2(g)-->2NH3(g) At a certain temperature and pressure, 1.2L of N2 reacts with 3.6L of H2. If all the N2 and H2 are consumed, what volume of NH3 at the same temperature and pressure will be produced? I'...
Wednesday, December 12, 2012 at 9:42pm by Ezra

Chemistry
CoCl2(aq) + NH3(aq) = ? Cu(NO3)2(aq) +NH3(aq) = ? CuSO4(aq) +NH3(aq) = ? Could some one please tell me what the answers are?? I am stuck... what do I do with the NH3??? Thank you!!!!!
Sunday, September 16, 2012 at 5:54pm by Georg

CHEM
I wonder if heat of fusion is supposed to be heat of reaction? If so, then use PV = nRT to convert 10 L NH3 at the conditions listed to n = number of moles of NH3. Convert moles NH3 to grams NH3. g = moles x molar mass. Then 92.6 kJ x ??grams NH3/34 = ?? kJ.
Thursday, November 18, 2010 at 7:34pm by DrBob222

Chemistry
Can you check my calculations, please? It's for a lab we did in order to find the the enthalpy of formation of NH4Cl(s). My final answer was -299.4 kJ, while the theoretical, or actual, value is -314.4 kJ. It was the closest value out of everyone in the entire class. I'm not ...
Wednesday, February 20, 2013 at 6:27pm by a Canadian

chemistry
10.0 moles of NH3 and 10.0 moles of H2 are introduced into a 1.00 L flask. At equilibrium, 3.0 moles of NH3 gas remain. Calculate Kc for this reaction. N2(g) + 3H2(g) < > 2NH3(g) sorry i forgot to say show all the work please! We usually don't do the whole problem. The ...
Sunday, August 5, 2007 at 6:51pm by patrick

chemistry
Just products? Are you studying complex formation? Co is known with both 6 and 4 NH3 complexed. Ni is the same. Cu is square planar (with NH3) and coordination number of 4. 1. Co(NH3)6+2 + NO3^- 2. Cu(NH3)4^+2 + NO3^- 3. Ni(NH3)6^+2 + NO3^-
Wednesday, July 15, 2009 at 11:45pm by DrBob222

chem
NH3 + H^(from HNO3) ==> NH4^+ The equation you want is the above one. How it works is below. pH = pKa + log (NH4^+)/(NH3) So when HNO3 is added to the solution, the NH3 reacts with it to form NH4^+, it increases NH4^+ and decreases NH3
Sunday, October 24, 2010 at 11:11pm by DrBob222

Chemistry ammonia gas
Al + NaOH produces H2 gas + Al(OH)4^- which a relatively standard reaction. Al, however, is a strong reducing agent and with the NO3^- from the Ca(NO3)2, it can reduce the NO3^- to NH3. (I don't think this is a good reaction for preparing NH3--there are better ways of doing it...
Wednesday, October 29, 2008 at 12:57pm by DrBob222

Chemistry
H2 + Cl2 ==> 2HCl mols HCl = 21/molar mass HCl. mols H2 = 1/2 that (from the coefficients in the balanced equation). mols H2 at STP = L/22.4; therefore L H2 = mols H2 x 22.4 L/mol = ?
Sunday, July 21, 2013 at 2:04pm by DrBob222

chemistry
hi kinda stuck :) 100.0 ml of 0.100 M H2NNH2 (kb =3.0 x10^-6) is titrated by 0.200M calculate PH after adding the following volumes of HNO3 a 0 b 25.0 ml c 50.0 ml d 60.0 ml ----------------------------------------- A) N2H4 + HNO3 --> N2H5+ + NO3- .100 0 0 3.0 x 10-6= x2/....
Sunday, July 26, 2009 at 2:14am by Jim_R

Chemistry HELP!!!
If 2.5 L N2 reacts with 7 L H2, what is the theoretical yield (in liters) of NH3? Assume that the volumes of reactants and products are measured at the same temperature and pressure.
Thursday, February 10, 2011 at 7:54pm by Mishka

chemistry
H2 + Cl2 ==> 2HCl 2.4L H2 will produce 2*2.4 = 4.8 L HCl if it has an excess of Cl2. 1.5 L Cl2 will produce 2*1.5 = 3.0 L HCl if it has an excess of H2. This is a limiting reagent problem; I know that because BOTH reactants are given. Therefore, the amount HCl produced will...
Monday, November 1, 2010 at 9:29pm by DrBob222

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