Which substance (s) have no fixed shape and no fixed volume?

1 kg of oxygen is heated from 20 to 120°C. Determine the amount of heat transfer required when this is done during a (a) constant-volume process and (b) isobaric process.

A binary liquid system exhibits LLE at 25°C. Determine from each of the following sets of miscibility data estimates for parameters A12 and A21 in the Margules equation at 25°C: (a) x1 α = 0.10, x1 β = 0.90; (b) x1 α = 0.20, x1 β = 0.

Malcolm solves 13 + 7 with regrouping. Can this be true or no.

1. The area of the given triangle is 25 square units. What is the value of x? X+2

Which of the following results from the fact that skip signals refracted from the ionosphere are elliptically polarized? A. Digital modes are unusable B.

Just getting to your class is enough for showing up. A) True B) False

A completely reversible heat pump produces heat at a rate of 100 kW to warm a house maintained at 25℃. The exterior air, which is at 0℃, serves as the source.

A closed system undergoes a process in which work is done on the system and the heat transfer Q occurs only at temperature Tb. For each case, determine whether the entropy change of the system is positive, negative, zero, or indeterminate.

A scientist who is evaluating an ancient human skeleton for signs of vitamin and nutrient deficiency is conducting:

Which of the following is required in order to make a protected left turn A. A left green arrow B. No oncoming traffic C. A left turn only lane D. A large enough gap