Questions and answers by

A Canadian

Questions (19)

Someone said, "Calculate the total delta H of the reaction and subtract the total delta H of the product from it. If you get a
1. 2 answers
2. 533 views
C6H14 + 19/2 O2 -> 6 CO2 + 7H2O delta H = -4163 kJWhat mass of hexane is required to produce 1.0E5 kJ of heat by complete
1. 2 answers
2. 744 views
Someone said, "Calculate the total delta H of the reaction and subtract the total delta H of the product from it. If you get a
1. 2 answers
2. 616 views
HCl (aq) + NaOH (aq) -> NaCl (aq) + H2O (l)Will the neutralisation reaction be endothermic or exothermic? Hint: think about the
1. 4 answers
2. 2,073 views
Are my answers correct?C6H14 + 19/2 O2 -> 6 CO2 + 7H2O enthalpy change = -4163 kJ a) if 0.537 mol of carbon dioxide is produced
1. 4 answers
2. 4,098 views
2C2H2 + 5O2 -> 4CO2 + 2H2O + energyWhat does the equation communicate about the relative energy of the chemical bonds in the
1. 5 answers
2. 2,523 views
Please help me figure out where I went wrong.HNO3 + KOH -> KNO3 + H2O enthalpy change = -53.4 kJ/mol 55.0 mL of 1.30 mol/L
1. 4 answers
2. 2,697 views
I don't really understand why unit analysis works.I found a simple example on a website (I can post the link in a comment if you
1. 5 answers
2. 716 views
4Fe + 3O2 -> 2Fe2O3 + 1.65E3 kJ C) what is the enthalpy change for the formation of 23.6 g of iron(iii) oxide? I'm trying to
1. 4 answers
2. 3,045 views
25.9 kJ + 1/2 H2 + 1/2 I2 -> HIB) how much energy is needed for the reaction of 4.57E24 molecules of iodine, I2, with excess
1. 4 answers
2. 1,743 views
4Fe + 3O2 -> 2Fe2O3 + 1.65E3 kJC) what is the enthalpy change for the formation of 23.6 g of iron(iii) oxide? I'm trying to
1. 2 answers
2. 1,692 views
This isn't exactly a homework question, I'm just trying to understand the concept we learned today...So say we had: 4Fe + 3O2
1. 9 answers
2. 798 views
N2 + O2 -> 2NO enthalpy change = +180.6kJc) what is the enthalpy change for the formation of one mole of nitrogen monoxide?
1. 4 answers
2. 1,780 views
How come the formula for potassium peroxide is K2O2; I can't see how you'd get that...
1. 3 answers
2. 2,930 views
Why is the formula for potassium peroxide K2O2?
1. 1 answer
2. 706 views
The height of a plant after each of the first three weeks was 7mm, 20mm, and 33mm, respectively. If this pattern of growth
1. 1 answer
2. 515 views
The height of a plant after each of the first three weeks was 7mm, 20mm, and 33mm, respectively. If this pattern of growth
1. 1 answer
2. 517 views
In a lab experiment, the count of a bacteria doubles every hour.a)at 1pm, there was 23000 bacteria. How many bacteria will be
1. 2 answers
2. 1,083 views
The height of a plant after each of the first three weeks was 7mm, 20mm, and 33mm, respectively. If this pattern of growth
1. 1 answer
2. 516 views