Question

question 13 (1 point) listen which of the following are intensive properties? a) the density of copper is 8.94 g/cm³. b) my dog has a mass of 74 lbs. c) the apple i ate had 95 calories. d) the molar mass of nitrogen is 14.0 g/mol. e) bromine gas has a reddish - brown color. question 14 (1 point) listen which of the following is a chemical change? a) boiling of water b) carving a piece of wood c) condensing water vapor into rainfall d) broiling a steak on a grill e) melting wax

Explanation:

For Question 13: Intensive properties do not depend on the amount of substance. Density, molar mass, and color are independent of sample size; mass and Calories (a measure of energy content tied to amount) are extensive.
For Question 14: A chemical change produces new substances. Broiling a steak causes irreversible molecular changes (like protein denaturation and Maillard reactions), while the other options are physical changes (no new substances formed).

Answer:

Question 13:
a) The density of copper is 8.94 g/cm³.
d) The molar mass of nitrogen is 14.0 g/mol.
e) Bromine gas has a reddish-brown color.

Question 14:
d) Broiling a steak on a grill