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Question 22 4 pts If all the batteries currently present in the world were fully charged and connected to supply the world's energy, how long could we run the world on this system? Less than one hour About one day A few weeks About one month More than one month Flag this Question Question 23 4 pts What is the importance of batteries in using renewable energy such as solar and wind power? Batteries are very energy dense. Batteries provide energy even when it's dark and the wind is not blowing. Batteries can be charged when energy is abundant and discharged when energy is not. Batteries can keep electricity flowing even when a cloud passes over head and reduces electricity production from solar panels. Batteries last forever (or at least a long time). Flag this Question Question 24 4 pts Why do ions form? The universe needs a balance of positive and negative charges. Atoms gain or lose electrons to obtain electron arrangements where the outer shell is like the closest (on the Periodic Table) noble gas. Ions form when electron sharing is not possible. Ionic compounds are the only kinds of compounds that can dissolve in water.

D Question 22 4 pts If all the batteries currently present in the world were fully charged and connected to supply the world's energy, how long could we run the world on this system? O Less than one hour o About one day oA few weeks o About one month oMore than one month D Question 23 4 pts What is the importance of batteries in using renewable energy such as solar and wind power? Batteries are very energy dense. Batteries provide energy even when it's dark and the wind is not blowing Batteries can be charged when energy is abundant and discharged when energy is not. Batteries can keep electricity flowing even when a cloud passes over head and reduces electricity production from solar panels. Batteries last forever (or at least a long time) D Question 24 4 pts Why do ions form? O The universe needs a balance of positive and negative charges. O Atoms gain or lose electrons to obtain electron arrangements where the outer shell is like the closest (on the Periodic Table) noble gas. O lons form when electron sharing is not possible. O lonic compounds are the only kinds of compounds that can dissolve in water.

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