Which contributes to the polarity of a water molecule?

B. deflection of hydrogen atoms by lone pairs of electrons

C. no difference in the electronegativity of oxygen and hydrogen

Alice added sodium chloride to water and stirred the water for several minutes. Alice is most likely trying to demonstrate that ionic compounds are hard. can dissolve. are clear. can melt.

If the fluoride is consumed as sodium fluoride (45.24% f), what amount of sodium fluoride contains the recommended amount of fluoride?

Which option describes a common property of the elements, nitrogen (N), phosphorus (P), arsenic (As) ? Hint: Review your periodic table. They have the same amount of reactivity. They have the same amount of atomic mass.

How many molecules of H2O are equivalent to 97.2g H2O

How many cups of beer are in a keg?

What is the standard cell potential (E°cell) for the voltaic cell based on the reaction below? Sn2 + (aq) + 2Fe3 + (aq) → 2Fe2 + (aq) + Sn4 + (aq)

G oil of wintergreen, c8h8o3 is prepared when methanol, ch3oh, is reacted with salicylic acid, c7h6o3. what is the percent yield of a reaction in which 15.3 g of oil of wintergreen is collected after 16.

How can a neutral atom become a positively-charged particle?

Mineral oil can be used in place of mercury in manometers when small pressure changes are to be measured. What is the pressure of an oxygen sample in mm of mineral oil if its pressure is 28.5 mm Hg? (d of mineral oil = 0.88 g/mL; d of Hg = 13.

To identify an unfamiliar organism, you could use a field guide and an