Recent content by Zaqiqu

My answer was wrong, but I had the right idea. I finally got the proper solution, and it shows that I did make a mistake - should have taken the 0.24 moles, as per the equation n=MV - and which I had written on one of my five pages of notes, but I overlooked in the frustration of spending five...

I can't tell you how satisfying it is to have somebody go on about how wrong you are, only to have it confirmed that you are right. Such an arrogant tone for a homework-help forum, especially from somebody who was dead wrong.

This is from the textbook. The associated example from which this problem is a practice exercise said to assume x mL = x g. I'm completely flummoxed by this problem, as is everybody else I've asked to help. Most of what I did here is derived from the examples immediately preceding this practice...

The balanced equation: 2HNO3 (aq) + Ba(OH)2 (aq) ---> 2H2O (l) + Ba(NO3)2 (aq) The molar masses: HNO3 = 63.018g Ba(NO3)2 = 261.32g Ba(OH)2 = 171.316g Since 400mL = 400g we can write 400g Ba(OH)2 * (1 mole Ba(OH)2 / 171.316g Ba(OH)2) = 2.34 mol Ba(OH)2 Using the heat of neutralization found...

I think I got it, but I'm off by .10 from the answer in the book. Gonna do one more iteration, but with more attention paid to significant figures; if I'm closer, I'll post what I got.

Homework Statement A quantity of 4.00 3 10 2 mL of 0.600 M HNO 3 is mixed with 4.00 3 10 2 mL of 0.300 M Ba(OH) 2 in a constant-pressure calorimeter of negligible heat capacity. The initial temperature of both solutions is the same at 18.46°C. What is the final temperature of the solution? (Use...

Popcorn aside, whenever I put something in the microwave for only a few seconds longer than I probably should have, it pops. I just watched a rib-bone go flying out of its slab, meat spewing everywhere. Is heat responsible for this action?

So I've got this old freezer, perhaps from the early 80s. Every night, as I'm sitting in the living room poring over textbooks, this freezer grows louder and louder. Every night, once I've had enough, I walk up to the freezer, and as soon as my foot puts pressure on a floor tile in front of the...

I love matrices, so I do look forward to Linear Algebra. Larson's or Clay's, I figure. I started Bauer and Westfall's Physics maybe six months ago, worked for a week before I realized that there was no way I'd get through the third chapter without calculus, and so here I've been, sitting right...

There are two textbooks each of calculus and physics which interest me. I am almost finished Stewart's Precalculus, which I have spent countless hundreds of hours on over these last couple of months in autodidactic zeal; and I am intent upon doing over a calculus textbook before moving on to...