Which material best absorbs sound waves in a room?

a. heavy curtains

b. hardwood floors

c. brick walls

d. cement floors

What is the value of keq for the reaction expressed in scientific notation

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?

Freezing 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.