What is the volume of a balloon if it contains 3.2 moles of helium at a temperature of 20. °C and standard pressure? ADD STEP BY STEP PLEAS

Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis