What is an example of a chemical change? A. water evaporating from a puddle B. cloth tearing when pulled C. wood forming sawdust when cut D. bread baking in an oven

Due to food scarcity in ancient times people had to spend

When you are exercising, do you most likely have more ATP or ADP?

What information does a net ionic equation give that a complete ionic equation does not show

The first four ionization energies for element X (not in kJ/mol) are 170, 350, 1800, 2500. The first four ionization energies for element Y are 200, 400, 3500, 5000. Identify elements X and Y. (There may be more than one correct answer)

What is collision theory? How does it relate to factors that affect reaction rate?

How many electrons does zinc lend?

Solid iron has a density of 7.9 g/cm3. Liquid mercury has a density of 13.6 g/cm3. will iron float or sink in mercury explain

Convert 6.42 moles of H2O to molecules

An aspirin tablet contains 81.0 mg of aspirin, which has the molecular formula, c9h8o4.

What size container do you need to hold 0.0459 mol of N2 gas at stp