Dinitrogen difluoride gas is collected at in an evacuated flask with a measured volume of . when all the gas has been collected, the pressure in the flask is measured to be . calculate the mass and number of moles of dinitrogen difluoride gas that were collected. round your answer to significant digits.

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explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

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