Why does the prescence of ione pairs contribute to the polarity of a water moleculea. they allow the bonds between oxygen and hydrogen to be singleb. they increase the partial positive charge on the oxygen atom c. they prevent the atoms from forming a linear molecule d. they counter the uneven pull on electrons between the atoms

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.

How many absorptions would you expect to observe in the 13c nmr spectra of the following molecules? a) 3-chloropentane b) cis-4-methyl-2-pentene