:

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.

Which is one example of a phenotypic change that is not genetic

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

How does photosynthesis show the conservation of mass and energy?