How much heat is needed to raise the temperature of 7g of water by 18oc?

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?

Who examines and coordinates the cleanup of polluted sites?

The point along a planet's orbit where it is closest to the sun is called the