Why is the ozone layer vital to life on Earth? A) It causes clouds to
be created
B) It shields the Earth
from ultraviolet (UV)
rays from the sun C) It is made up of oxygen
D) Planes fly in the
ozone layer

What is the value of the standard enthalpy of formation of an element in its most stable form?

Need asap question 1 minerals are organic compounds. true false question 2 what vitamin can be found in foods like oranges, grapefruits, and broccoli? a. vitamin a b. vitamin k c. vitamin c d. vitamin d question 3 what are minerals? a. chemical elements that are needed for body processes. b. organic compounds that the body needs in small amounts to function properly. c. small molecules used to build proteins. d. an organic compound that is insoluble in water and includes fats. question 4 how many types of vitamins does the human body need? a. 15 b. 11 c. 13 d. 17 question 5 vitamins are a good source of energy. true false

How many moles are in 1.26*10^24 particles in significant figures