What is the structural formula for 2, ethyl-2,3, dimethylpent-3-yne​

Which other elements contain the same number of outer electrons as sodium

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?