The valence electrons of an atom of which element would feel a smaller effective nuclear charge than the valence electrons of a calcium (ca) atom? a. magnesium (mg) b. potassium (k) c. scandium (sc) d. strontium (sr)

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

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?

1. if you have a gas at 127 degrees c, what is it's absolute temperature (kelvin)? a. 200kb. 300kc. 400kd. 500k2. if you had a gas whose absolute temperature measured 45 k, what is that temperature in celsius? a. -228 cb. -300 cc. 125 cd. 112 c