Which statement I true for photosynthesis? A. Producers use it B. Consumers use it C. Scavengers use it D. Decomposers use it

What was discovered by chemists after Mendeleevs periodic table was accepted

Bismuth-211 decays by emitting an alpha particle

If 500 ml of air contains 2 x 10^22 particles (Atoms and molecules), how many particles do you inhale in one day if you breath 15000 L of air? a. 2 x 10^22 b. 6 x 10^26 c. 1.2 x 10^27 d. 5 x 10^24

What is an experiment that can show gas being created?

A certain batch of fireflies were observed to "flash" at the rate of 13.0 times per minute at 25°C, and at the lower rate of 5.0 times a minute at a temperature of 15°C.

Flammable materials like alcohol should never be dispensed or used near True or False

The diagram to the right shows energy for two reactions, A and B. Which reaction has the higher Gpx?

To be considered a source of water pollution, the source must include a chemical.

2,000 kJ worth of heat is absorbs by each of the following objects. Which object will experience the smallest temperature change

How are real gases different from ideal gases?