15.(06.04 LC) What is the mass of 22.4 L of H2 at STP? (4 points)
01.01 gram
02.02 grams
O 11.2 grams
m
22.4 grams

**40** points asapessay questions (10 points possible) clear image of next, create your own scenario. it can be one of your own real experiences or one you make up. use imagery in your writing to give your instructor a the setting and an action taking pace in your writing explain the structure and functions of the skin at work in your scenario. !

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?