Look at the data table and graph for the 25-coil electromagnet. with the 1.5 v battery, the electromagnet picked up an average of 6 paper clips, and with the 6.0 v battery, it picked up an average of 23 paper clips. a. about how many times stronger than the 1.5 v battery is the 6.0 v battery? b. what is the approximate ratio of the number of paper clips picked up using the 6.0 v battery to the number picked up using the 1.5 v battery? c. is this a direct relationship or an indirect relationship? 25-turn electromagnet battery voltage number of paper clips picked up first try second try average 1.5 v 5 7 6 3.0 v 12 12 12 4.5 v 14 17 15.5 6.0 v 20 26 23

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?

An unknown substance has been shown to have metallic bonds. which of the following is most likely a property of this substance? a. low conductivity b. low boiling point c. high malleability d. high solubility in water