A balanced chemical equation will have the same ______________ on each side
a. number of moles
b. number of molecules
c. mass of each compound
d. number of atoms of each element
d
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Active galaxies are the result of galactic _______________
Fill in the blank(s) with correct word
What theories have been proposed to explain the many ringlets in Saturn's rings?
What will be an ideal response?
A 4.00-kg mass is attached to a spring hanging vertically and hangs at rest in the equilibrium position
The spring constant of the spring is 1.00 N/cm. The mass is pulled downward 2.00 cm and released. What is the speed of the mass when it is 1.00 cm above the point from which it was released? A) 0.0443 m/s B) 0.0744 m/s C) 0.0201 m/s D) 0.0866 m/s E) The mass will not reach the height specified.
An Earth observer sees a spaceship at an altitude of 920 m moving downward toward the Earth at a speed of 0.690c. What is the spaceship's altitude as measured by an observer in the spaceship?
a. 1270 m b. 512 m c. 1650 m d. 666 m e. 635 m