Which bones are included in the appendicular skeleton?

the bones protecting the brain and spinal cord
the bones of both the upper and lower limbs
the bones of the lower limbs and the lower vertebra
the bones of the upper limbs and the middle vertebra

The difference between atomic mass and molar mass

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?

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. a solution containing 3.50 g of sodium carbonate is mixed with one containing 5.00 g of silver nitrate. how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete?