How many red photons (4.00e14 Hz) would it take to equal the energy of 20,000. green photons (565 nm)? A. 2.66e-5
B. 4.27e25
C. 2.66e5
D. 2.89e5

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Ill give brainiestif one neutron initiates a fission event that produces two neutrons in the products, how many new reactions can now be initiated? if each of the neutrons produced in the first fission event then initiates a fission event that produces one neutron in the products, how many new reactions can now be initiated by each neutron? how many neutrons in total were produced by the two fission events described?

Which of the following units is not an official si unit? mole liter kilogram ampere