Andrew conducted an investigation to determine the effects of burning on a sample of steel wool. Steel wool is a bundle of metal fibers used for cleaning metal pots and pans. Some data from his investigation are shown in the table. Before burning
2.2g
After burning
2.4g
Make a claim about whether steel wool undergoes a chemical reaction during burning. Support your claim with evidence from the investigation

What must occur for air masses to form fronts

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?

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device