Balancing equations Definition and 23 Threads

Summary: Our chemistry teacher gave a sample problem regarding balancing a redox equation. I managed to proceed to a considerable distance, but I can't seem to understand how to get the final balanced equation. Please help me out. The problem is; reaction of K2Cr2O7 with SO2 in the presence of...

Homework Statement Problem: Predict the products between aqueous calcium nitrate and aqueous ammonium phosphate. Homework EquationsThe Attempt at a Solution 3Ca(NO[3])[2](aq) + 2(NH[4])[3]PO[4](aq) = Ca[3](PO[4])[2] + 6(NH[4])(NO[3]) I'm not sure what the states of matter would be on the...

Homework Statement : This question is about the properties and reactions of the oxides of some elements in their +4 oxidation state. (a) Chlorine dioxide, Cl O2, is an important industrial chemical, used to bleach wood pulp for making paper, and to kill bacteria in water supplies. However, it is...

E=mc^2 states that when you speed up matter to the speed of light, it becomes pure energy, of mc^2 joules. Now, if that is true, can you reverse the equation? Wouldn't energy speed up to the negative speed of light(-c^2), turn into matter? Or is that the wrong balance?

This is a question, not a home work. The book I'm reading explains how to balance equations step-by step. UNBALANCED EQUATION IS THIS: C2H6 + O2 = CO2 + H2O The book gets to this: C2H6 + O2 = 2CO2 + 3H2O The book says "There are 7 oxygen on the right-hand-side but only 2 on the left". All...

hi there,:) I am just wondering, when balancing equations, because oxygen is a diatomic molecule, when it is in a compound, can it exist in threes of fives? for example, Fe2O3, or does it have to be 2Fe203. Or is it just when it is a single molecule of oxygen(and not in a compound) that it must...

Homework Statement if 20.0 g of dihydrogen is reacted with 20.0 g of dioxygen , how many grams of water is produced? Homework Equations The Attempt at a Solution balancing 2H2 + O2 = 2H20 now 2 mole h2 gives 2mole H2O so 20/2 moles of H2 will give 10 moles H2O 10 x 18 =...

Homework Statement Cl2 + NaOH --> NaCl + NaClO3 + H2O I'm having troubles in balancing questions, is there a certain method to doing it or is it all just about practice? I managed to get to 3Cl2 + 6NaOH --> 4NaCl + 2NaClO3 + 3H20 But now I am completely stuck and have no idea how to...

So i just finished my homework, if someone can check it for me, would be appreciated thanks :) I have the questions in the attachment 22a) asks to write and balance word and chemical equation of the burning of carbon and burning of sulfur for carbon C+O2---> C02 for...

In balancing chemical equations, we are given let's say the reactants side of the equation and asked to find the products and balance if neccesary, if a metal(usually transition) has multiple valences, how do i know which of the valences is being used? this has given me trouble to no end @_@

Um it says not to post homework but alotta ppl did so I am assuming it means only chemistry. I'm sorry if I am wrong and I've used this site a little but I forgot how to post (ima noob:( ). O.k so, I am kinda noob to chem to. We got a test tommorow on Balancing Chemical equations and I need...

I have no idea how to do the balanced equations portion of the FR. I know how to balance equations using stoichiometric coefficients, but not the particular type of "balanced equations" on the AP test. For example: "a small piece of sodium is placed in distilled water" my initial thinking...

Homework Statement Cu(NO3)2(aq) + Na2CO3(s) + H2O -> CuCO3*Cu(OH)2(s) + NaNO3(aq) + CO2(g) CuCO3*Cu(OH)2(s) + Heat -> CuO(s) + H2O(l) + CO2(g) Homework Equations The Attempt at a Solution Cu(NO3)2(aq) + 2Na2CO3(s) + H2O -> CuCO3*Cu(OH)2(s) + 4NaNO3(aq) + CO2(g)...

Homework Statement Homework Equations FeC2O4 x 2H2O + H2C2O4 + H2O2 + K2C2O4 --> K3[Fe(C2O4)3] x 3H2O The Attempt at a Solution Got it! Nevermind! Solution for future reference: 2||FeC2O4 x 2H2O|| + H2C2O4 + H2O2 + 3||K2C2O4|| --> 2||K3[Fe(C2O4)3] x 3H2O||

I completed these, and I wanted to check if I did them correctly. A)Write and balance equations for these reactions: 1.zinc + mercurous nitrate --> Zn + 2HgNO3 -> Zn(NO3)2 + 2Hg OR 2Zn + Hg2(NO3)2 -> 2Hg + ZnNO3 2.tin + antimony (V) chloride --> Sn + SbCl4 -> Sb + SnCl4...

I can't seem to figure out a problem for my a/p chemistry summer assignment review. If you could help me that would be great. The problem is: Carbon disulfide liquid reacts with ammonia gas to produce hydrogen sulfide gas and solid ammonium thiocuanate. This is what my answer was but it is...

Hello, I am new at this, I am not exactly sure how this works. I have a question where I have to balance two equations using either the half-reaction or the oxidation number method... they are as follows.: 1. Co + MnO4- + H+ = Co+2 + Mn+2 + H2O 2. Cu + HNO3 = Cu(NO3)2 + NO + H2O I am...

What are the missing coefficients for the equation below? Al2(SO4)3 + KOH ---> Al(OH)3 + K2SO4 a.) 1,6,2,3 b.) 2,12,4,6 c.) 1,3,2,3 d.) 4,6,2,3 I think my problem is whether or not to keep the SO4 together, or break it apart to sulfur and oxygen?

in f=v/a i want to divide f/2. What do i change on the other side of the equation? I need to determine a

I"m having trouble with balancing these equations, they aren't working out or I'm just not doing them right :confused: NH3 + H2O -----> NH4OH This is what I tried 8NH3 + H2O -----> 2NH4OH i can't seen to balance out NH

Here is what I have: BrO_{3}^{-} + NH_{3}OH^{+} + H_{2}O --> Br^{-} + NO_{3}^{-} + 2H_{3}O^{+} I'm adding back spectator ions, K+ and Cl-. KBrO_{3} + NH_{3}OHCl + H_{2}O --> KBr + KNO_{3} + 2H_{3}O^{+} + HCl As you can see I have 1 K and 1 Cl on the left, but 2 K and 1 Cl on the right. And...

When dealing with an equation in which you combine 2 elements that have multiple oxidation states, let's say Magnesium and Nitrogen, which oxidation states do you assume you're working with? I know that in the instance of Magnesium and Nitrogen, it would have to be one of Nitrogen's negative...

Hi, I've always had trouble balancing equations. Does anyone know if there is an 'algorithm' for balancing equations? For example, how do I balance "Nitrogen Dioxide + Water = Nitric Acid"-Sorry, don't know how to use Latex! Any help will be greatly welcomed.