If a helium balloon has a volume of 8.5 L assuming STP conditions, how many moles are there?

answer

0.37946 moles

explanation

at STP, there are 22.4 liters for every mole of gas, so divide the number of liters by 22.4 to find the number of moles

number of moles =

number of moles = 0.37946 moles

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.