What must be known to determine the nature of the salt formed from a weak acid and weak base? a. the strength of the salt only
b. the strength of the acid only
c. the strength of the base only
d. the strength of both acid and base

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

answer: mole of the gas

answer: mole of the gasexplanation:

explanation:

0.07 g/cm³

1.37 g/cm³