Friday
December 13, 2013

Posts by SHEENA

Total # Posts: 42

Chemistry
I am working on a redox stoichiometry lab. I need to calculate the moles NaBO3*4H2O. Mass=1.0133g in 100mL solution In my experiment I used 9.98mL and titrated in with KMnO4. I'm really confused about how to calculate the moles. Thanks for any help!!!!

2^2

trig
angle a is acute and sin = u. find the other five trigonometric functions in the terms of u.

computer
what is the cost: performance: reliability: size: installed in numbers: of super computers, main frame, personal computers and PDA'S ?

Astrophysics
Oh, yes, yes. This is explained in my book; I just didn't remember this formula or think to apply it to this problem. Thank you so much!

Astrophysics
If an eclipsing binary system has a period of 32 days, an orbital velocity of 153km/s, and an orbit that is nearly edge-on, what is the circumference of the orbit? The radius of the orbit? The mass of the system? I can't seem to find a starting point for this problem.

Chemistry
the specific heat capacity of gold is .13 J/g°C. Calculate the specific heat capacity of gold in cal/g°C. Calculate the specific heat capacity of gold in J/mol°C. Calculate the amount of energy required in joules to heat 2.5 kg of water from 18.5°C to 55.0°...

Chemistry Help!
the specific heat capacity of gold is .13 J/g°C. Calculate the specific heat capacity of gold in cal/g°C. Calculate the specific heat capacity of gold in J/mol°C. Calculate the amount of energy required in joules to heat 2.5 kg of water from 18.5°C to 55.0°...

human service management
What are three ways human resources help support the strategic goals of human service organizations