Ionic bond forms between metal and non-metal.
Na is a metal, and F is a nonmetal.
Na and F form ionic bond.
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Please find attached file with answers.
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The correct answer is (1) one mole of NO2.
The gram formula mass is also known as the molar mass and is defined by the mass over one mole of a substance.
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It is supposed to protect the cell from it's surroundings, or from the outside.
Scale and measuring tape.
To determine the mass and volume, you can find the density. The block will float if its density is less than that of water.
