The equation H2O2 ? H2O + O is not correctly written because
a. the number of atoms of each element on each side is not the same.
b. the mass indicated on each side is not the same.
c. oxygen is diatomic.
d. hydrogen peroxide decomposes to H2O and H.
c
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Which statement about the behavior of Universe geometries is correct? a. Closed and open universes expand forever
b. Closed universes expand and then contract. c. Only flat universes expand forever. d. Flat and open universes expand and then contract. e. Only flat universes expand and then contract.
How do radio interferometers greatly enhance resolution in radio wavelengths?
What will be an ideal response?
Our Sun will fade in luminosity as its supply of hydrogen drops in a billion years
Indicate whether the statement is true or false
Thin Lenses: Which statement about a single thin lens is correct?
A. A converging lens always produces a real inverted image. B. A diverging lens always produces a virtual inverted image. C. A converging lens sometimes produces a real upright image. D. A diverging lens always produces a virtual upright image. E. A diverging lens produces a virtual upright image only if the object is located between the lens and its focal point.