An unknown mass of each of the following substances, initially at 23.0 ∘C , absorbs 1940 J of heat. The final temperature is recorded as indicated. Find the mass of each substance. Pyrex glass (final temp:55.4 C)

1. list three scientific reasons cockroaches may fly.

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?

Which description best characterizes the motion of particles in a solid?