An equation is the symbolic representation of a chemical reaction based on the conservation of mass.
The law of conservation of mass states that mass can neither be created nor it can be destroyed. The volume and the density of the matter may be changing but mass will remain constant. Or it could be represented by a balanced chemical equation, which is a chemical equation that shows all mass is conserved during the entirety of the reaction. For example, N_{2} + H_{2} -----> NH _{3} is an unbalanced chemical equation. In order to balance the said equation, we need to add coefficients to equalize the number of atoms on both the reactants and product sides. This will give us a new equation and that is N_{2} + 3H_{2} -----> 2NH _{3}. Through this the mass of the atoms are conserved.
Answer:
B
Explanation:
From charles' law,
where v is volume and t is absolute temperature
- Hence that's it
CaCl2
All of the other choices are elements
Answer:hope we can be friends
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The Milky Way Galaxy is thought to contain hundreds of millions of black holes. But only a few dozen have revealed themselves—through the x-ray glow of hot gases that surround them. Now, astronomers have found a “dark” black hole only 1000 light-years away from Earth—just down the road in galactic terms. It is the closest black hole to our planet ever found, in a star system that is visible to the naked eye. “They have good evidence,” says Todd Thompson, an astronomer at Ohio State University, Columbus. “I believe them.”
The invisible nature of most black holes frustrates astronomers, who can learn about this final stage of stellar evolution only from the few dozen that have been found heating up an “accretion disk”—swirling gas they gobble up. Recently, however, astronomers have found several naked, nonaccreting candidates, using a technique borrowed from exoplanet searches. Exoplanet hunters look for periodic shifts in the frequency of the light from stars as it moves toward and away from Earth.
Explanation: