:

in the chemical reaction below, sodium (na) and chlorine (cl) combine to form sodium chloride (nacl).
2na + cl2 → 2nacl

if the combined mass of the starting reactants is 50 grams, then the mass of sodium chloride formed once the reaction has reached completion

a. will be exactly 50 grams.

b. will be exactly 100 grams.

c. will be less than 50 grams.

d. will be between 50 and 100 grams.

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses