Identify the acid and conjugate base pair in the following equation: HF + H2O → H3O+ + F-

Question 3 options:

a)

HF & H2O

b)

HF & F-

c)

HF & H3O

d)

H2O & H3O+

Write a paragraph at least 10 sentences explaining how rocks are used today in society

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness