Some elements have isotopes which have a different number of neutrons, and this means they have different masses.
<span>Peer review affect research in a good way. Though you have done research time and time again, it's always best to have a colleague or someone in that field to evaluate a peer review to make sure everything in the research is 100% correct. Now some experimental results won't be trusted unless there has been peer reviewed from the scientific community.</span>
she will have to listen to all of carefully while she is writing for example:
she will listen and look at her writing page (where she writes) she looks while she listens and writes what she hears for example again:
(pretend as i am her.)
"Hey mom, dad, brother come i see crabs!" as she writes it she focuses on how she writes and stops the video and back up again to listen so she can see if it was correct.
Hey there!
Stock solution:
Concentracion bromide = 0.128 M
initial solution in volumetric flask = 450 µl
So , moles of bromide present:
450 µl in liters :
1 µl = = 1*10⁻⁶ liters
450 * ( 1*10⁻⁶ ) = 0.00045
0.128 * 0.00045 => 57.6 * 10⁻⁶ moles
Now volume final is 25 mL , in liters : 0.025 L ou 25*10⁻³
so new bromide concentration:
57.6*10⁻⁶ / 25*10⁻³=> 2.304*10⁻³ M
