A student records the mass of a piece of iron. the iron is then left outside until it rust. what type of reaction occurs. and how does the mass of the object after rusting compare with its original mass

A soft drink contains 46 g of sugar (sucrose C12H22O11) how many sugar molecules are present?

If an atom has 17 protons, 15 neutrons, and 19 electrons, what is the atom's electrical charge?

Rock candy is a type of candy made by dissolving sugar in hot water and then cooling the solution so that large sugar crystals form.

A mechanic repaired 28 cars and 46 trucks last month. He spent 2.5 hours repairing each of these vehicles. Which equation can be used to find h, the total number of hours the mechanic spent repairing these vehicles?

Define concentration in science

What are some conditions that might control deposition

What are four basics states of matter

For beta radiation, what stops its penetrating abilities? aluminum a piece of paper skin thin fabric

1.00 L of a gas at standard temperature and pressure is compressed to 473 mL. What is the new pressure of the gas?

How can I balance this equation __NH4NO3->__N2+__H2O