At a certain altitude a barometer using water (density 0.99g0cm³) as the barometric liquid gave a pressure that was recorded as 85cm H2O. if be a we density 0.879g/cm³ was used in the barometer calculate the height of the barometer under the same condition?

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

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table