Open Question: How do you know if the reaction Fe + O2 makes FeO or Fe2O3?
=D Member since:March 11, 2007Total points:674 (Level 2)When equation writing, should you assume that Fe + O2 will be FeO or Fe2O3? Why?It doesn't give (II) or (III), but it says "fine iron wire"4 minutes agoAnswer Question
by Danny Member since:November 16, 2009Total points:1,371 (Level 3)it depends on the Fe charge. Fe is one among many other metals that have multiple charges. so the problem or equation should probably states the charge of Fe, or simply say Fe(II), meaning iron with a +2 charge. so Fe + O2 makes FeO means Fe has a charge of +2, if Fe + O2 makes Fe2O3 means Fe has a charge of +3.
Open Question: Calculate the standard state change in entropy for the following reaction using third law entropies: Li+ (aq)?
Open Question: How much HCl is produced from the reaction of an excess of HSbCl4 with 3 moles H2S in the following reaction?
So 3 mol of H2S would react to produce 8 mol HCl.
H2 and H2O react with the same number of moles, so 6.6 mol. water is produced by the reaction of 6.6 mol of H2.
Oxygen in the same reaction reacts with one-half as many moles, so 6.6 mol water is produced by 3.3 mol O2.
Open Question: I need an idea of a chemical reaction to use in a Rube Goldberg machine?
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Open Question: The rate of reaction?
LeoL Member since:December 04, 2010Total points:34 (Level 1)Z1) is measured by examining changes in theconcentration during a time interval.
Z2) can be described at all times by the initial
rate.
Z3) can be measured from the slope of a
concentration-time plot of any reactant
or product.
Which of these is/are correct?
1. Z1 only
2. Z1 and Z3 only
3. Z3 only
4. Z1, Z2 and Z3
5. Z2 onlyAnswer QuestionBe the first to answer this question.
Open Question: What is the reaction picture...?
loginabo... Member since:April 06, 2011Total points:95 (Level 1)where it's a two panel comic and in the first panel a stick figure-ish guy has his index finger raised and his mouth open as though he's about to say something then in the second panel he has his mouth closed and his finger bent like he doesn't know what to say. I see it in forums and on funnyjunk but I can't seem to find the actual pic anywhere. Is there a website full of reaction pics like that where I can find it? Any help is much appreciated.Answer QuestionBe the first to answer this question.
Open Question: what is the equation for the reaction of chlorine with ethane when the substances ae exposed to uv radiation?
Open Question: can you give me the reaction between AOS (alpha olefin sulfonate) and?
Open Question: help with reaction rate?
Sara Member since:September 25, 2009Total points:290 (Level 2)if i react H2 and I2 to produce 2HI, how does increasing the concentration of the hydrogen differ from the effect of when you increase the concentration of both?Answer QuestionBe the first to answer this question.
Open Question: Calculating enthalpy of a reaction?
Data:
C2H4(g) + 3O2(g) ---------> 2CO2(g) + 2H2O(l) ?H= -1410.9kJ
2C2H6(g) + 7O2(g) --------> 4CO2(g) + 6H20(l) ?H= -3119.4kJ
2H2(g) + O2(g) ------------> 2H2O(l) ?H= -571.6kJ
Im really confused and can not get this on my own
Open Question: Dilantin Synthesis Reaction?
Open Question: What is true for the following reaction?
A) It is an endothermic reaction and ?H= +62.8 kJ.
B) It is an endothermic reaction and ?H= -62.8 kJ.
C) It is an exothermic reaction and ?H= +62.8 kJ.
D) It is an exothermic reaction and ?H= -62.8 kJ.
E) This reaction will not occur.
Open Question: How many grams of Cl2 will be produced along with 250.0 kJ of heat in the following reaction?
A) 2.844 grams
B) 87.90 grams
C) 101.0 grams
D) 201.9 grams
E) 250.0 grams
Open Question: a result of a chemical reaction between pollutants and water and is one cause of chemical weathering of rock?
Open Question: Oxidation-reduction, acid-base, precipitate, or decomposition reaction?
Reaction 1. Cu(s) + 4HNO3 ? Cu(NO3)2 (aq) + 2NO2 (g) + 2H2O (l)
Reaction 2. Cu(NO3)2 (aq) + 2NaOH (aq) ? Cu(OH)2 (s) + NaNO3 (aq)
Reaction 3. Cu(OH)2 (s) + Heat ? CuO (s) + H2O (g)
Reaction 4. CuO (s) + H2SO4 (aq) ? CuSO4 (aq) + H2O (l)
Reaction 5. CuSO4 (aq) + HCl ? Cu (s)
A. If the reaction is an oxidation-reduction reaction:
i. Write the half-reactions and label as oxidation or reduction.
ii. Balance each half-reaction.
iii. Balance the electrons.
iv. Summarized the half-reactions to obtain a balanced chemical equation for the reaction.
B. If the reaction is a precipitation or acid/base reaction, write the formula unit equation, the total ionic and net ionic equations.
C. If the reaction is decomposition reaction, write a balanced chemical equation.
Someone plz help me?
Open Question: Does Aluminium Chlorohydrate react with carboxylic acid in a neutralization reaction to give salt and water?
Open Question: Finding pOH in a Chemical Reaction?
Do I use this equation?
NaCN(aq) + H2O(l) ? [Na+](aq) + [OH-](aq) + [H+](aq) + [CN-](aq)
? Kb/Kw = [Na+][CN-]/[NaCN] = x²/(0.0827 - x) = 4.49*10^4
---? x = 0.0826998 M = [Na+] = [CN-]
But then how would I get a pOH out of that? adding NaCN doesn't directly affect the concentration... or am I supposed to look up the pH of [CN-] on a table or something? I'm sorry, I really have no idea how to solve this.
