kileykittykt8184
09.03.2021 •
Chemistry
HELPP
Which characteristic must be true of an aquifer?
C. The rock must be impermeable and contain many pores.
D. The rock must be impermeable and contain few pores.
A. The rock must be permeable and contain few pores.
B. The rock must be permeable and contain many pores.
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Ответ:
In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction.