Mathieu

I recently got a project to do on a country other than the U.S. my teacher sucks at explaining things, so in literal terms the instructions say "reasearch a country other than the US, draw two maps: 1, a map that has all borders and rivers and 2, a Biome...

A 53.0 kg boy and his 41.0 kg sister, both wearing roller blades face each other at rest. The girl pushes the boy hard, sending him backward with a velocity 3.00 m/s toward the west. Ignore friction. (a) Describe the subsequent motion of the girl, and the...

A chemist has two ethylene glycol and water solutions: one that contains 11.98% ethylene glycol and another with 7.30% ethylene glycol. How many litres of each must be mixed to make 7.50 x 102 L containing 10.50% ethylene glycol?

How do I calculate the molality of a saturated solution of KCl at 70 degrees Celsius? I have gotten the moles of KCl (.66) but am not sure where to go from there.

I just want a simple check to see where I made a mistake. Question) Sketch the graph on the interval -4 ≤ x ≤ 2 and calculate the definite integral in terms of signed area (do not anti differentiate). f(x) = 4+x , for -4 ≤ x < -2 2-√(4-x^2) , for -2 ≤ x ≤...

thanks so much!! I can now do my project :) thanks so much again! Mathieu