Answer:
Black holes are astronomical objects that have such strong gravity, not even light can escape. Neutron stars are dead stars that are incredibly dense. ... Both objects are cosmological monsters, but black holes are considerably more massive than neutron stars.
Explanation:
The atomic number of Hydrogen is 1, and the mass is 1.008.
It is not a pure substance, because a solution are mixed chemicals in a way that the molecules are not bonded with one another. Thus, separating them from compounds and elements, which are pure substances.
Answer:
It cost Evan $17.70 to send 177 text messages. How many text messages did he send if he spent $19.10?
Explanation:
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Answer:
Photosynthesis is the process used by plants, algae and certain bacteria to harness energy from sunlight and turn it into chemical energy.
Explanation:
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