Recent content by ff_yy

Um after doing that i got the net reaction of OH-(aq) + H+(aq) --> H2O(l) for both reactions...so does that mean there is no effect?

Homework Statement What effect, if any, would using nitric acid instead of hydrochloric acid in the reaction NaOH(s) + HCl(aq) --> NaCl(aq) + H2O(l) have on the enthalpy changes measured in an experiment? Homework Equations N/A The Attempt at a Solution I have no idea. Some...

ok thanks, i think i got it...

[Solved] pH of Aqueous Solution Homework Statement Calculate the pH of the following aqueous solution prepared by adding 3.0L HBr(g), measured at 27 degrees Celsius, 757 mmHg pressure, to sufficient water to give 0.10L of solution. Homework Equations pH = -log[H+] The Attempt at a...

Homework Statement Solve the equation z^4= -i Homework Equations De Moivre's Theorem The Attempt at a Solution I understand how to find the roots by equating modulus and argument but I wanted to ask how do you know which arguments to take? Because I got up to 4*theta = -Pi/2...

So, when you say apply the vector equation to each component separately, can I split say the vector of velocity of rain relative to car into horizontal and vertical components? And that would mean that horizontally: Vre= -12.5 +12.5 = 0 vertically: vre =12.5 + 0 = 12.5 So answer is just...

Homework Statement A car travels due east with a speed of 45.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 45.0° with the vertical. Find the velocity of the rain with respect to the...