An blank is a material that formed from the decaying ancient organisms and is used today as a source

A fossil fuel

B minerals

C sediment

D aquifer

Is it physical change or chemical change when you smooth a wood chair with sandpaper?

The measurement of grams of solute per one million grams of solution is known as

0.0650 mm in scientific notation

How many moles of Sodium Hydroxide - NaOH are in a 35.65g sample of NaOH?

Biological catalysts involved in the acceleration of the rate of chemical reactions are called

Find the parent acid and parent base of al2 (co33, determine if they are strong or weak, and determine if the salt is acidic, basic, neutral, or unpredictable.

A syringe contains 589 mL of CO at 325 K and 1.2 atm pressure. A second syringe contains 473 mL of N2 at 298 K and 2.6 atm. What is the final pressure if the contents of these two syringes are injected into a 1.00 L container at 0.00°C?

Which pair of elements can form an ionic compound? A) Two atoms of hydrogen B) One atom of sodium and one atom of fluorine C) One atom of calcium and one atom of chlorine D) Two atoms of hydrogen and one atom of oxygen

Two members of the Boron family owe their names to bright lines in their emission spectra. Indium has a bright indigo blue line (451.1nm) and Thallium has a bright green line (535.0 nm). What are the energies of these two spectra lines?

Whats the answer to 7/2 * 1/5?