Recent content by dt_

can't you figure out the volume of NaOH, though? write and balance the chemical eqn, and then use stoichiometric relationships to find the moles of NaOH. Divide this by the molarity (0.15 M) to get milliliters of NaOH.

You applied the ln incorrectly. You'd be getting ln (y-5), not ln y - ln 5. See if you can go from there :smile: Anyway, the idea for finding an inverse function like this is, replace all the y with x, and replace all the x with y. Then solve for the new y, which is the inverse function...

Homework Statement Hydrogen peroxide decomposes into water and oxygen gas with the help of a catalyst. write the molecular formula and the redox half reactions. Homework Equations (N/A) The Attempt at a Solution the molec. formula is of course 2 H_{2}O_{2} (l)...

Homework Statement Balance this redox equation. Homework Equations Ag + H^{+} + NO_{3} ^{-} \rightarrow Ag^{+} + H_{2}O + NO The Attempt at a Solution Using a conventional balancing mechanism I got these coefficients: 1 + 8 + 2 -> 1 + 4 + 2 but the correct...

Homework Statement In lab, a student decides to analyze a 0.6118 g sample containing only magnesium chloride and sodium chloride. He does this by adding 145 milliliters of 0.1006 M silver nitrate. A precipitate, silver chloride, is formed, which has a mass of 1.7272 grams. Using this data...

Thanks Dick. :) HallsOfIvy: Not quite getting that, but do you think you can check my arithmetic and see if I've worked out the solution correctly?

| \frac{x}{3} | ^{2} = \frac{x^{2}}{9} so the r^2 in x^2 + y^2 = r^2 is equal to (x^2) / 9 and.. the equation of the circle is y^2 + z^2 = (x^2 / 9) but that's a.. cone? i think? which would make sense does that seem right?

Hi everyone, I'm pretty new to Physics Forums but it seems like a fairly friendly community. :) Homework Statement Determine the equation of the surface formed when the line x=3y is rotated about the x-axis. Homework Equations x=3y is the given line.The Attempt at a Solution First I...