Yes
coz the molar mass of fluorine is 19
the molar mass of hydrogen is 1
then, HF will be 20g/mol
A methyl group is an alkyl derived from methane, containing one carbon atom bonded to three hydrogenatoms — CH3. In formulas, the group is often abbreviated Me. Such hydrocarbon groups occur in many organic compounds. It is a very stable group in most molecules.
Answer: water solutions conducts charge
Explanation: solid sodium chloride is n insulator.NaCl is dissolved in water
In ionic forms. In solution there are Na+ and Cl- ions which can transfer charge.
Optrion A: when trying to determine a star's chemical composition.
Because unique atomic emission spectrum, analyzing the emission spectrum you can tell the chemical composition.