True or False : It's always best to balance hydrogen and oxygen first when balancing equations?
Q. True or False : It's always best to balance hydrogen and oxygen first when balancing equations?
Asked by <33 - Tue Mar 13 14:55:10 2007 - - 2 Answers - 0 Comments

A. False, balance heavy metals 1'st, Oxygens last, the Hydrogens should then take care of themselves. If not then you have add water (for H) and rebalance for the oxygen.
Answered by Dr Dave P - Tue Mar 13 15:06:08 2007

What is the balance equation for hydrogen peroxide and chloric (I) acid?
Q. What is the balance equation for hydrogen peroxide and chloric (I) acid?
Asked by Nyree A - Mon Oct 26 10:11:32 2009 - - 1 Answers - 0 Comments

A. H2O2 + HClO --> ??? Oxygen will be oxidized to O2 and chlorine will be reduced to Cl2. H2O2 + 2HClO --> O2 + Cl2 + 2H2O === Follow up === I'm not sure where Itachi is headed, but HCl is "hydrochloric acid". Chloric (I) acid is the same as hypochlorus acid, HClO.
Answered by pisgahchemist - Mon Oct 26 10:23:24 2009

What is the mass of hydrogen gas released from 2.70g of aluminum metal and hydrochloric acid? (Balance the rea?
Q. What is the mass of hydrogen gas released from 2.70g of aluminum metal and hydrochloric acid? (Balance the reaction first) __Al(s) + __HCl(aq) -->__AlCl3(aq) + __H2(g)
Asked by ha c - Tue May 5 03:13:32 2009 - - 2 Answers - 0 Comments

A. 2 Al + 6 HCl = 2 AlCl3 + 3 H2 moles Al = 2.70 g/ 27 g/mol= 0.10 moles H2 = 0.10 x 3 / 2 =0.15 mass H2 = 0.15 mol x 2 g/mol= 0.30 g
Answered by Dr.A - Tue May 5 03:42:50 2009

How do you balance these two equations?
Q. How do you balance hydrogen peroxide catalyzed by manganese dioxide (I always have too many O) also how are you supposed to add sodium and hydrogen? they're two cations. They cant be added right?
Asked by fuzzygraynightmare - Sat Jan 24 14:58:07 2009 - - 4 Answers - 0 Comments

What is the balanced equation for the breakdown of hydrogen peroxide?
Q. I need to know the balanced equation for the breakdown of hydrogen peroxide. Full equation please.
Asked by joeblake15 - Tue Jan 8 16:12:41 2008 - - 3 Answers - 0 Comments

A. 2 H2O2 --> 2 H2O + O2
Answered by Dr. W. - Tue Jan 8 16:17:03 2008

how do you write a balance formula equation for (H3PO4) to produce hydrogen gas and aluminum phosphate?
Q. how do you write a balance formula equation for (H3PO4) to produce hydrogen gas and aluminum phosphate?
Asked by SBL - Tue Jan 13 20:03:26 2009 - - 2 Answers - 0 Comments

A. The answer would be: 2H3(PO4) + 2Al ---> 3H2 + 2Al(PO4)
Answered by ll22 - Tue Jan 13 20:08:57 2009

If magnesium and hydrochloric acid produces hydrogen gas, when balance the equation, what's the coefficient fo
Q. r HCI?
Asked by margoretewhitfield - Fri Jun 15 00:15:11 2007 - - 2 Answers - 0 Comments

A. The coefficient would be 2. Mg + 2HCl--- MgCl2 + H2
Answered by Mandy - Fri Jun 15 00:24:49 2007

How many grams of chlorine gas react with 4.75 grams of hydrogen gas according to the balanced chemical equati
Q. How many grams of chlorine gas react with 4.75 grams of hydrogen gas according to the balanced chemical equation? H_2_(g) + Cl_2_(g)--> 2HCl(g)
Asked by Jeff C - Thu Jun 26 17:37:56 2008 - - 2 Answers - 0 Comments

A. You use stoichiometry. Focus on mole ratios. One mole of hydrogen gas reacts with one mole of chlorine gas. Don't forget that both chlorine and hydrogen are diatomic. 4.75g H2 x(mole/2g)x(1mole Cl2/1mole H2)x(71g/mole)= 168.6g of Chlorine gas
Answered by Zulu Warrior - Thu Jun 26 17:53:56 2008

magnesium and hydrochloric acid it produces hydrogen gas.When you balance the equation, what is the coeff. HCL
Q. In this equation what is the coefficient for HCL
Asked by bubba 1 - Thu Nov 15 10:16:05 2007 - - 2 Answers - 0 Comments

A. Mg + 2 HCl ---> MgCl2 + H2
Answered by ChemTeam - Thu Nov 15 10:35:06 2007

What's the balanced chemical equation of sodium hydrogen carbonate and 6 moles of hydrochloric acid?
Q. One of the products is sodium chloride. The other two are gases. One of the gases causes limewater to turn cloudy.
Asked by tommy<3 - Mon Feb 18 18:37:59 2008 - - 1 Answers - 0 Comments

A. NaHCO3 + HCl --> NaCl + CO2 + H2O. Only CO2 is a gas, if the reaction is done at room temperature. If you want to use 6 moles of HCl, then you will need six moles of sodium bicarbonate. The reaction of carbon dioxide in lime water is: Ca(OH)2 (aq) + CO2 (g) CaCO3 (s) + H2O The calcium carbonate precipitate causes the cloudiness.
Answered by Glenguin - Tue Feb 19 12:27:54 2008

Balance: Calcium + Water --> Calcium Hydroxide + Hydrogen Gas?
Q. I've got the skeletal equation Ca + H2O --> CaOH2 + H2 but I don't know how to balance it? =O Thank you everybody! I get it now!
Asked by rachel ann - Fri Jan 30 20:39:34 2009 - - 3 Answers - 0 Comments

A. Ca + H2O ~~> Ca(OH)2 + H2 check the Ca, they are balanced check the H, there are 2 on left side and 4 on right side so you must put a "2" in front of H2O to balance the H check O, because of the 2 you put in front of H2O, there are 2 Os on the left side and 2 on the right side, so they are balanced the final balanced equation should look like: Ca + 2H2O ~~> Ca(OH)2 + H2 it is important to never forget the parenthesis. Ca(OH)2 is completely different from CaOH2.
Answered by ninjamayn - Fri Jan 30 20:46:36 2009

What is the coefficient of hydrogen gas after balancing the following equation?
Q. __Ca(s) + H2O(l) ==> __Ca(OH)2(aq) + __H2(g) 1 . 2 3 . 4 or . none
Asked by someone - Sun Nov 15 22:24:24 2009 - - 3 Answers - 0 Comments

Could somebody please balance these chemical equations for me ?
Q. I am solving problems involving the calculation of (delta)H of combustion of certain organic compounds; hence it is imperative that I have a balanced chemical equation of the reaction process. So far, I have successfully used the strategy of balancing out the hydrogen atoms first, but I get lost in the math with these two equations. Please help me out. 1.) Methanol + Oxygen >> Carbon Dioxide + Water 2.) C6H14 + O2 >> CO2 + H2O
Asked by cristo nostro signore - Sat Feb 23 23:33:51 2008 - - 2 Answers - 0 Comments

A. 2 CH3OH + 3 O2 ==> 2 CO2 + 4 H2O 2 C6H14 + 19 O2 ==> 12 CO2 + 14 H2O
Answered by mrfarabaugh - Sat Feb 23 23:38:37 2008

Zinc metal reacts with hydrochloric acid to produce zinc chloride and hydrogen gas. write a balanced chemical?
Q. 1) Zinc metal reacts with hydrochloric acid to produce zinc chloride and hydrogen gas. write a balanced chemical equation. 2) for the reaction give in #1, calculate how many grams of hydrogen would be produced if 15g of Zinc was reacted with a sufficient amount of hydrochloric acid? 3) Indicate which is the reducing agent and oxidizing agent in equation #1?
Asked by BangUskong - Wed Oct 28 23:19:53 2009 - - 1 Answers - 0 Comments

A. 1) Zn (s) + 2HCl (aq) > ZnCl2 (aq) + H2 (g) 2) number of moles of zinc = mass/Ar = 15/65 = 3/13 molar ratio of Zn:H2 = 1:1, therefore number of moles of hydrogen = 3/13 mass of hydrogen = moles x Mr = 3/13 x (1x2) = 6/13g or 0.462g 3) zinc, Zn is the reducing agent because its oxidation state increases from 0 to 2 and hydrochloric acid, HCl is the oxidizing agent because it loses hydrogen ions, H+
Answered by Wangekyo - Wed Oct 28 23:30:29 2009

Methane gas reacts with steam (water) to produce carbon monoxide gas and hydrogen gas. Write the balanced for
Q. Methane gas reacts with steam (water) to produce carbon monoxide gas and hydrogen gas. Write the balanced formula equation for this reaction.
Asked by brittanyg - Mon Nov 5 10:47:47 2007 - - 2 Answers - 0 Comments

A. CH4(g) + H2O(l) --> CO(g) + 3H2(g)
Answered by Nicholas C - Mon Nov 5 11:54:41 2007

How many GRAMS of chlorine gas react with 5.91 moles of hydrogen gas according to the balanced chemical equati
Q. How many GRAMS of chlorine gas react with 5.91 moles of hydrogen gas according to the balanced chemical equation? H_2_(g) + Cl_2_(g) 2HCl(g)
Asked by Jeff C - Thu Jun 26 19:09:05 2008 - - 1 Answers - 0 Comments

For Sodium Hydrogen Phosphate, why is the 2 placed where it is?
Q. The equation for Sodium Hydrogen Phosphate is Na2HPO4. The 2 is needed to balance the 3- charge of PO4. Could the 2 have been placed after the H instead?
Asked by CrO4^2- - Thu Oct 23 10:40:51 2008 - - 1 Answers - 0 Comments

A. hydrogen phosphate is a polyatomic ion with a -2 charge
Answered by dillontraynor - Thu Oct 23 10:49:05 2008

When a piece of zinc metal is placed in aqueous hydrochloric acid, zinc chloride is produced and hydrogen gas?
Q. When a piece of zinc metal is placed in aqueous hydrochloric acid, zinc chloride is produced and hydrogen gas is evolved. Write a balanced chemical equation for this reaction. Decide which reactant is in excess for each of the following combinations of reactants. 79.3g of HCL and 46.3G of ZN will be and 5.92 mol of HCL and 95.5 of ZN and 5.42 10^23 molecules of zn and 67.1 of hcl and 3.78 mole of zn and 119 of hcl
Asked by stranger - Mon Sep 10 22:32:45 2007 - - 1 Answers - 0 Comments

A. Zn + 2 HCl = H2 + ZnCl2 79.3 g of HCl x 1 mol /36 g = 2.2 mol HCl 46.3 g Zn x 1 mol / 65 g = 0.71 mol Zn Zn is limiting (gives 0.71 mol of H2), whereas 2.2 mol of HCl would give 1.1 mol of H2. HCl is in excess. You figure out the rest.
Answered by Fly On The Wall - Mon Sep 10 22:40:09 2007

What is the symbol for the (balanced) equation of sodium hydrogen carbonate plus nitric acid?
Q. if its a number at the bottom write ^ like water would be H^2O
Asked by Madison - Mon Nov 16 07:10:58 2009 - - 2 Answers - 0 Comments

A. The symbol ^ is usually used for numbers to powers, superscripts not subscripts. NaHCO^3+ HNO^3---> CO^2+ H^2O+ NaNO^3
Answered by science teacher - Mon Nov 16 12:24:54 2009

What is the balanced chemical equation for sodium hydrogen carbonate+nitric acid?
Q. What is the balanced chemical equation for sodium hydrogen carbonate+nitric acid?
Asked by berryem - Fri Nov 13 20:06:23 2009 - - 1 Answers - 0 Comments

A. NaHCO3 + HNO3 --> NaNO3(aq) + CO2(g) + H2O(l) Any time a carbonate is reacted with an acid, carbon dioxide is produced.
Answered by pisgahchemist - Fri Nov 13 20:12:56 2009