In printing, it’s the color black. In chemistry, it’s potassium. In baseball, it’s a strikeout. Which letter is it? A. K

B. R

C. T

D. X

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.