QUIZ - Force At a Distance & Gravity There is very little matter between Earth and the Moon, only empty space.
Yet the Earth and Moon are able to exert
POSSIB
force on each other because:
O A strong magnetic force holds the two objects together in orbit.
O Gravity is a force that acts at a distance.
The force of static electricity holds the two objects together in orbit.
O Gravity allows them to be in direct contact with each other.
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Chemical reaction: C + O₂ → CO₂.
Law of conservation of mass states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time.
In chemical reactions, the mass of the chemical components before the reaction (in this reaction carbon and oxygen) is equal to the mass of the components after the reaction (carbon dioxide).
If we use one mole of substances, that:
mass of reactants is: 12 g (C) + 2·16 g (O) = 44 g.
mass of product is: 12 g + 32 g = 44 g.