# Posts by chiara

Total # Posts: 9

**Math**

if some unicycles, bicycles tricycles are parked in a parking lot. there are 65 wheels in all. how many each type of vehicle in the lot

**Physical Science**

Nevermind, I got the answer...I think

**Physical Science**

An astronaut in a spacesuit has a mass of 100 kilograms. What is the weight of this astronaut on the surface of the Moon where the strength of gravity is approximately 1/6 that of Earth?

**Chemistry**

Would gravimetric analysis or colorimetry be more accurate when calculating the percentage yield of a precipitate?

**Math**

Hi,need lots of help.Whole page

**Chem ASAP**

For voltaic cell notation how do you know when to include Pt(s) and when not to.... Need help ASAP... test tonight!

**calculus**

For trigonometric substitution to solve the above integral, fill in the blanks below using the picture of the triangle given. integral (x^3)/(sqrt(25+9x^2)) dx / l / l / l / l / l / l / l / l / l side A / l / l --------- side B *** sorry hard to draw on the computer side a=3x ...

**Chemistry**

The equilibrium system N2O4(g) 2NO2(g) was established in a 1.00-liter vessel. Upon analysis, the following information was found: [NO2] = 0.500 M; [N2O4] = 0.0250 M. What is the value of Keq?

**science**

a shell is fired from the cannon. the shell of mass 30kg is shot with an initial velocity of 30m/s. what is the momentum of the cannon just after the shell is shot ?