Posts by rachell

Total # Posts: 13

Physics
On an unknown planet, a pendulum of length 1.5 m swings with a period of 3.3 s. What is the acceleration of gravity on this planet?

Are the others correct Henry or anyone else?

1. An amusement park ride has a diameter of 16 meters and revolves at 15 rpm (revolutions per minute). How fast is a rider moving if she sits at the outermost part of the ride? A. 29.4 m/s B. 1.07 m/s <<<< C. 225 m/s D. 12.56 m/s E. 9.8 m/s 2. A police officer ...

chemistry/ stioichiometry
so it is 20.4 mols cu???

chemistry/ stioichiometry
Cu2S + O2- 2Cu +SO2 when 10.2 mol Cu2S react with oxygen, how many moles of Cu are formed? path?

chemistry/ stioichiometry
Cu2S + O2- 2Cu +SO2 when 10.2 mol Cu2S react with oxygen, how many moles of Cu are formed? path?

chemistry
THank you for help steve with the other one!! :) My other one is: The compostition of adipic acid used in the manufacture of Nylon is 49.3%c, 6.9% H and 43.89%O. The molecular mass is known to be 146 amu. What is the molecular formula of adipic acid? I got C6-H10-O4. DID I DO ...

chemistry
THank you for help steve with the other one!! :) My other one is: The compostition of adipic acid used in the manufacture of Nylon is 49.3%c, 6.9% H and 43.89%O. The molecular mass is known to be 146 amu. What is the molecular formula of adipic acid? I got C6-H10-O4. DID I DO ...

gen chemistry
I need help please?? Calculate the empirical formula for a compound composed of 13.27g Carbon and 70.9g sulfur. I got C1S2. Is this correct?

polynomials
The fact that multiplication distributes over addition, otherwise known as the "distributive property