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 100 grams.

b.
will be between 50 and 100 grams.

c.
will be exactly 50 grams.

d.
will be less than 50 grams.

What is the mass of 4 molecules of co2

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.