Homework Statement
A student finds that it takes 32.17 mL of 0.1048 M NaOH to titrate 5.000 mL of sulfuric acid solution. Determine the molarity and percent mass of the sulfuric acid in the solution (you may assume that the density of the sulfuric acid solution is the same as pure water)...
Homework Statement
Balance the following equations. (Use the lowest possible coefficients and enter a "1" if the coefficent is a one.)
(a) ___Cr(s) + ___S8(s) -> ___Cr2S3(s)
(b) ___NaHCO3(s) -> ___Na2CO3(s) + ___CO2(g) + ___H2O(g)
(c) ___KClO3(s) -> ___ KCl(s) + ___O2(g)
(d) ___Eu(s) +...
is it nuclear fission?
i just do not have no idea what radioactivity is all about.
plus with lack of interest and knowledge in science, it is not my first language to understand it so quickly.
i not only would appreciate the answer but longer explanation about what this is all about.
i just...
Homework Statement
If Bill put enough radioactive matter in one place, the chain reaction associated with multiple radioactive decays can be made to run out of control and will form an atomic bomb. What do we call this amount of matter?
Homework Equations
The Attempt at a Solution
Homework Statement
Complete the following nuclear reactions
Enter mass number, atomic number, and then symbol
A) 232 92U--->4 2He + 228 /90 / _______________
Homework Equations
4 2He + 228 90U
The Attempt at a Solution
i got the mass number (228) and atomic number...
oh, i got it.
the answer needed to be negetive because the question says "emits". so answer had to be negative. i replaced the answer with -2.84e-19 and it was correct. thank you for the help. now i can go to bed.
Homework Statement
An excited atom emits a photon of red light with a wavelength of 701. nm, what is the energy of the photon?----> _________________J
Homework Equations
and for this, my application was
firstly get landa from formula of c=landa * nu
and then landa * h, which is...