7. What can be used to determine the scale/measurement for the electrolysis of acidified water? *
A. A scale
B. O Hoffman Voltmeter
C. A barometer
D. A and C are correct​

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

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