The reaction, 4Fe (s) + 3O2 (g) à 2 Fe2O3 (s), is the rusting of iron. What occurs as the reaction proceeds? a precipitate is formed the color of the solid will change a new odor is given off the solution bubbles

Which phase change is a gas becoming a liquid?

If 5.61 g of ammonium nitrate (NH4NO3) is dissolved in 155 mL of water to make an instant cold pack, what is the molarity of the resulting solution?

The development of a new experimental method is most likely to change a theory if it makes it possible to___. A. analyze samples when they are frozen B. perform the experiment in a different lab C. obtain and analyze results more quickly D.

He are the number of protons represented in the periodic table?

Form a hypothesis sharks don't have swim bladders and must move constantly or they sink. hypothesize about the amount of food that a shark must eat compared to the amount eaten by a bony fish of the same size

How does the sun heat the side of the Earth facing away from it?

Which of the following is true about the weight of an object? A. It remains same for the object. B. It cannot be measured accurately. C. It is a force acting on the object. D. It is always less than the mass of the object.

State three characteristics of matter?

What is an example of sustainability

Definition of science method