Solution (a) contains 0.01 m of nh4cl; solution
(b)contains 0.01 m of nacl; solution (c) contains 0.01 m of
naoh; andsolution (d) contains 0.01 m of ba(oh)2. arrange
the phof the solutions in an increasing order.

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit

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