Các dung dịch: NH 3 , FeCl 3 , Na 2 S lần lượt làm quỳ tím hóa màu: A.

xanh – đỏ – đỏ
B.

xanh – đỏ – xanh
C.

xanh – xanh – đỏ
D.

đỏ – xanh – đỏ

Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.

0.88 moles of n2o5 (g) was placed in a sealed 1.00 l vessel. calculate the equilibrium concentration of n2o5. no2, and o2 and the equilibrium constant after equilibrium has been reached by 65.0% of the n2o5 decomposing.

How many grams are in 1.75 mile of carbon