Simple chem question - ! which pair of atoms will form a covalent molecule? a) one atom of copper and two atoms of fluorine eliminateb) one atom of sodium and one atom of fluorine c) one atom of oxygen and one atom of iron d) one atom of oxygen and two atoms of hydrogen

The graph above shows how the price of cell phones varies with the demand quantity. the equilibrium price for cell phones is where both supply and demand quantities equal $100, 5,000 5,000, $100

The pressure in a fluid is affected by which characteristics of that fluid

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.