7 Barbara completed an assignment for extra credit in science class. She used a pH meter to find the pH of different substances
After she finished measuring the pHs. she created a diagram that showed the substances arranged in order from the most acidic to
the most basic
2.5 5.0 6.5 7.0 7.4 9.0 125
Cola Acid MB Water Blood 3p Bleach
rain
If Barbara added baking soda--pH 8 4-to her investigation, where should it appear in her diagram?
A. between soap and bleach
B. between milk and water
C. between blood and soap
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5 of 10 Answered
Session Score 1005 (6/6)

What type of electromagnetic radiation has a shorter wavelength than blue light

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet