Which of the following could NOT be the chemical formula of an element? A . T
B .TB
C) Tb
D. t

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

Scientists often deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each of these numbers in an alternate form.

Determine the osmotic pressure at 25 °c of an aqueous solution that is 0.028 m nano3. a) 0.685 atm b) 0.0729 atm c) 1.37 atm d) 0.0364 atm e) 2.06 atm