Which of the following contains the smallest amount of matter

John daltons atomic theory is considered to be the first truly scientific theory of the atom. What aspect of daltons research was missing from the early theories?

Why is charcoal black? Question options: Charcoal has a black-colored pigment. Charcoal reflects black-colored light. Charcoal absorbs all wavelengths of light that fall on it. Charcoal reflects all wavelengths of light that fall on it.

Nearly half of the pollution caused by humans comes from what

Each Excedrin tablet contains 250 mg aspirin (ACE), 250 mg of acetaminophen (ACE), and 65 mg of caffeine (CAF). Calculate the theoretical percent (%) recovery of each component using the mass of one tablet (675 mg).

If the mass is 10g and the volume is 2cm3 what is the density?

How many joules are needed to warm 675 grams of water (specific heat = 4.186 J/g degrees Celsius) from 12 degrees Celsius to 85 degrees Celsius?

Pentaborane b5h9 (s) burns vigorously in o2 to give b2o3 (s) and h2o (l). what is δh° for the combustion of 1 mol of b5h9 (s) ? substance δh°f (kj/mol) b2o3 (s) - 1273.5 b5h9 (s) + 73.2 h2o (l) - 285.8

What is the definition of STP?

Which of the following is a possible definition of a base? A. A substance that increases the concentration of hydronium ions in a solution B. A compound that is a hydrogen ion acceptor in an acid-base reaction C.

Which of the following contains the smallest amount of matter