7. Which of the following is NOT an example of a mechanical wave?

a. Visible light

b. Sound wave

c. Seismic wave

d. Water wave

8 DO 12. What negative effects does the increasing human population have on Earth? (Choose all that apply.

How many moles of oxygen are in 8.25g of O?

For real gases, how does a change in pressure affect the ratio of PV to nRT? a. The ratio decreases as pressure increases. b. The ratio increases as pressure increases. c. The ratio is constant at all pressures.

What gas makes up close to 1/4 of the air surronding the earth?

Calculate the maximum numbers of moles and grams of H2S that can form when 153.0 g of aluminum sulfide reacts with 143.0 g of water: Al2S3 + H2O → Al (OH) 3 + H2S [unbalanced]

Which of the following organs are found in the circulatory system? * A.) Heart B.) Veins C.) Arteries D.) Capillaries E.) All of the above

What's the difference between volcano and vent

A marshmallow has an initial volume of 0.084 L at standard pressure (1.0 atm). If the marshmallow is placed in a vacuum chamber and the final volume is 0.785L, what is the pressure inside the chamber?

Can you think of another example of energy doing work fill out the table below with your idea

Write the net ionic equation for the reaction between agno3 (aq) and na2so4 (aq). be sure to include states of matter in your answer.