At a temperature of 274 K, the gas in a cylinder has a volume of 4.0 liters. If the volume of the gas is decreased to
2.0 liters, what must the temperature be for the gas pressure
to remain constant?
a. 137 K b. 273 K
c. 378 K d. 556 K

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

What is the type of the reaction below? bacl2 + h2so4 → 2 hci + baso4 double replacement synthesis single replacement decomposition

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.