What event occurs first in the light-dependent reactions of photosynthesis?

Describe at least two experiments, including the observed results, that caused the scientific community to accept changes to Dalton's original model of the atom.

The molar mass of butane (C4H10) is 58 g/mol. If a student measured the molar mass of butane to be 69, what is the % error of the measurement?

Which are functions of nucleic acids? Choose all answers that are correct. A. to defend against infection B. to provide structural support C. to carry genetic information D. to process information

Cryolite, na3alf6 (s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.

The agricultural practice of spraying insecticides leaves behind which pollutant in the soil? A. Chemical poison B. Excess nitrogen C. Excess salt D. Acidic compounds

What electromagnetic wave is used by hospitals to treat cancer? A. Gamma Ray's B. X-ray waves C. Microwaves D. Infared light

What plate do residents of new york state live on

What subatomic particle is responsible for changing an atom into an isotopes?

Helium (he) has an atomic number of 2. it is chemically stable because it

What are the disadvantages of plastics