Write the equilibrium‑constant expression for the reaction a ( s ) + 3 b ( l ) − ⇀ ↽ − 2 c ( aq ) + d ( aq ) in terms of [ a ] , [ b ] , [ c ] , and [ d ] , as needed. note that k c , which is sometimes symbolized as k eq , denotes that the equilibrium constant is expressed using molar concentrations. for this question, k c means the same thing as k eq .

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

Ground state electron configuration for element v

Which of the following statements is true? a. most heat energy is easily recovered and used for useful actions. b. friction causes molecules to vibrate more slowly. burning air and gasoline in an c. engine changes chemical energy into mechanical energy. it is impossible to d. change mechanical energy into mechanical energy.