When you doing a titration, you need to use an indicator to confirm whether the reaction is completed. When the indicator has the color change and will not change back in one minute, the reaction is finished and you don't need to add more.
Ultraviolet as ultraviolet light waves are around 420 nm like stated in the photo
<span>i think its Uranium Dating </span>
Unless you are talking about one specific theory, the answer is pseudoscience.
Answer:
3,200 joules
Explanation:
q = mcΔT = (250.0 g)(0.128 j/g°C)(100°C -25°C) = 3,200 joules
