Which of the following properties are chemical properties? A
a tee shirt is extra large
B
100 pennies weighs 90 g
С
vinegar produces carbon dioxide bubbles when combined with baking soda.
D
the density of copper is 8.96 g/cm3

C

Explanation:

They are 2 chemical properties creating a chemical reaction.

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )