A student predicts that a potato has a natural concentration of 0.6 M. When she does the diffusion experiment and leaves the potato piece in the beaker for 24 hours, she notices that the potato piece shows the following change in mass:

Mass Before : 1.0g
Mass After : 1.2g
Change in Mass: +0.2g

Was the student’s prediction correct? Why or why not?

A3-year-old child with nephrotic syndrome has been receiving prednisone for 1 week. the nurse reviews the child's progress record and determines that the medication has been effective. what information supports this conclusion? select all that apply.

Could someone me with number one you

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.