How many liters of carbon dioxide (CO2) at STP are needed to produce 5.00 liters of oxygen gas? (1 kg = 2.20 lbs.)

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Define a is a tiny pavket of energy

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.