Are nails in a jar with water a chemical change

Which one goes first A. consumers B. Decomposers C. producers

If you have 9 bread, 5 meat, and 6 cheese. How many complete sandwiches will be made?

Which describes the volume of 1 mol of gas at standard temperature and pressure? A: The volume is greater for a larger mass of gas. B: The volume is the same for any gas. C: The volume depends on the size of the container.

A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 13.9 nm . What is the total width of a crystal in millimeters 105 molecules across? Write your answer as a decimal.

How to determine if a compound is polar covalent or nonpolar covalent?

In the following diagram the counter clockwise torque is?

A water wave travels 36 meters in 15 seconds. whatvis the speed of water?

Which type of wave cannot move without a medium in which to travel? Heat waves Light waves Sound waves Transverse waves

Which describes the burning of fossil

The flow of energy in an ecosystem is the best described as energy moving in