Chemistry 1150 help Please!!!?

Question

8) Determine the correct result Report the Result

[1/T2 – 1/T1] where T1 = 298 K and T2 = 200 K

and what is the difference in 68000 and 68000. in scientific notation?

Answer 1

The previous answer was right; you shouldn't have to have someone solve that for you.  It's like asking, "What's 2 + 2?"  You just asked, "What's 1/200 - 1/298?"  And of course, the answer is .0016

The difference is that in 68000, the zeros are just placeholders.  So you would report that as 6.8 x 10^4 while in 68000. the zeros are sig figs, so you'd report that as 6.800 x 10^4.

Answer 2

just put T1 and T2 in the equation and solve the math - at this stage NO one should have to SOLVE a simple math eqn for you

the 0's in the first are NOT significant. they are in the second:

6.8x10^4 and 6.8000x10^4