Phản ứng nhị hợp N02 2N02 ---> N2O4
biết ∆H (kcal/mol) : 8,091. 2,309
S. 57,2. 72,2
tính biến thiên năng lượng tự do của phản ứng ở 0°C và 100°C

Atank contains 240 liters of fluid in which 10 grams of salt is dissolved. brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 l/min; the well-mixed solution is pumped out at the same rate. find the number a(t) of grams of salt in the tank at time t.

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

At element makes up all organic compounds?