In a chemical reaction equation, which side of the arrow is the reactant?

" A+B - -> AB"

- left

- right

- there are no reactants in equations.

One molecule of chlorophyll contains 137 atoms. how many of these atoms come from the metal magnesium?

One of the reactants was the CuCl2. Tell me how many Cu atoms there are and how many Cl atoms in one molecule of CuCl2

Static electricity is the buildup of electric charges. Which of the following is an example of a natural discharge of static electricity? A. northern lights B. Earth's magnetic poles C. lightning D. ocean waves

Which term names how clouds form by the collection of water vapor in the atmosphere? A. evaporation B. condensation C. precipitation D. seepage

Describe how producers consumers and decomposes are linked in a food chain

Two identical vessels are filled, at the same temperature and pressure, with different gases. One is filled with hydrogen and the other with carbon dioxide. Which statement is correct? a. Carbon dioxide molecules will have inelastic collisions. b.

If Plank's constant is 6.6 x 10 (-34) J/Hz, then what is the approximate frequency of a photon having an energy of 3 x 10 (-19) Joules?

Do all organisms perform meiosis?

What is the two significant figure of 11.76 cm^2? Rounded Answer

What happens to the size of a metal element as it becomes a cation? a. it increases b. it decreases c. it remains the same d. it is impossible to tell unless you know the specific element