Judy wanted to figure out the mass of her backpack. She put the pack on a
balance and added 3, 6, and 4 kg weights so that the balance was even. What
is the mass of her backpack?

A) 5kg
B) 9kg
C) 10kg
D) 13kg

List the two type of transporst that the cell in orde to transport molecules acroos the membrane

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume