Recent content by srose9625

1. I have drawn this diagram and still no clue. I have played with the numbers for DAYS. 2. I understand that part 3.? 4. I GOT it:) Tnet=(I)(speed) / time 5. ?

1). A uniform bridge span weights 50x10^3 N and is 40m long. An automobile weighting 15x10^3 N is parked with its center of gravity located 12m from the right pier. WHat upward force does the left pier provide? The answer is 29.5x10^3 N but how do I get that? my attempt: F - (50000N)(20m) -...

I have done a few Spectroscopy questions already, However I am having troble with these last three problems. Any help would be GREAT! Here is the link tothe spectroscopy questions. On worksheet 6b, I need help on #1 and #2. On worksheet 6a I need help on #4...

I do not think it is very clear. It jumps around from one topic to another and then repeats some steps over again. Thanks anyway.

Here is the link to what I have to do: http://quiz2.chem.arizona.edu/genche.../phosphate.pdf

Thank you for all your help and FAST, easy to understand responses! I will chat with you again sometime:)

a) (.45kg) (2090 J/kg) (23'C) = 2163x10 J e) (.45kg) (2010 J/kg) (134'C) = 1212x10^2 J f) I have a linear line for -23'C then I have ice drawn in a straight/horizontal line, then water drawn in a linear line followed by a straight/horizontal line, then steam in a linear line, then boiling in...

c) (.45kg) (4186 J/kg) (100'C) = 1884x10^2 J When will I use latent heat vs. specific heat? How did I do for e , f ?

so for c) it would be (.45kg) (2.0x10^3 J/kg) (100'C) = 9.0x10^4 J this is using the specific heat of steam. Would that be right?

I think that what I did, not sure though.

I am doing a project in the lab to determine the phosphate concentration of a water sample. There are so many steps involved. Can someone point me in the right direction. I know that I will be making a reagent using 2.5g ammoniun molybdate in 30ml distilled water.Then mixing 0.125g ammonium...

A student takes 0.45kg of ice. The ice is initally at -23'C. She heats the sample in an oven until the temp is 134'C. a). What is the Q needed to heat the ice to its melting point? b). What is the Q needed to change the solid ice into liquid water? c). What is the Q needed to heat the liquid...

a). (.45kg) (4.2x10^3 J/kg) (23'C) = 4.3x10^6 J Is that still right? c). (.45kg) (3.3x10^5 J/kg) (100'C) = 1.2x10^7 J I am guessing that water boils at 100'C. Would that be the right answer? e). (.45kg) (3.3x10^5 J/kg) (134'C) = 1.2x10^7 J OR (.45kg) (2.3x10^6 J/kg)...

A student takes 0.45kg of ice. The ice is initally at -23'C. She heats the sample in an oven until the temp is 134'C. a). What is the NRG needed to heat the ice to its melting point? b). What is the NRG needed to change the solid ice into liquid water? c). What is the NRG needed to heat the...

so 317.65/.75=423.5 is the density of the of the fluid thta would allow the float to float. Thank you VERY much for your help.