As an atom becomes an ion, its mass number (1) decreases (2) increases (3) remains the same

Explain why samples of platinum and copper can have the same extensive properties but not the same intensive properties

0.25 mole of O2 will contain the same number of molecules as 0.25 mole of NH3. true or false?

What is the shape of a molecule with a triple bond?

What do an eye, a telescope, and a microscope have in common

When a solid such as ice begins to melt, heat energy is added. What is the function of this added heat energy?

How many liters of oxygen gas, at 285 K and 1.2 atm, will react with 35.4 grams of calcium metal? Show all of the work used to solve this problem.

How many moles of H2So4 are in 2.50 L of 4.25 M aqueous solution?

A swimming pool measures 50.0 meters by 25.0 meters. How many grams of water are needed to fill the pool, whose average depth is 7.6 feet? Assume the density of water to be 1.0 g/mL. Use significant figures. Use "E" for scientific notation.

Enzymes called kinases are responsible for a. removing electrons from substrates b. enzymes that catalyze the transfer of protons from one molecule to another c. adding hydrogens to substrates d. adding phosphate groups (i. e.

Zn + Cl2 - ZnCl2 What is the type of reaction