12. Which classification describes the Milky Way? regular spiral barred spiral elliptical irregular

Which statement is true about a proton and an electron? (1) They have the same masses and the same charges. (2) They have the same masses and different charges. (3) They have different masses and the same charges.

How does the aurora borealis show weakness in the earth's magnetic field?

Which has the greater mass1 Kg lead or 1 Kg feathers?

What is the pOH value of 0.0050 M HCI

How many kilojoules of energy are released when. 1.60 kg of water cools from 80.0 ºC to 60.0 ºC?

Ozone (o3) in the atmosphere can be converted to oxygen gas by reaction with nitric oxide (no). nitrogen dioxide is also produced in the reaction. what is the enthalpy change when 8.50l of ozone at a pressure of 1.00 atm and 25°c reacts with 12.

How might vertical growth within a city decrease the impact of runoff and increase the opportunity for infiltration of water?

The correct answer is c. Energy processing from corn biofuels is not energy efficient.

If you went to the moon, how would your mass change relative to your mass on Earth? It would be the same on the moon as on Earth It would increase because of less gravity It would decrease because of less gravity None of the above

The pH of a solution is 2.60. What is the [H3O+] for the solution? 2.51 * 102 M 3.98 * 102 M 2.51 * 10-3 M 3.98 * 10-3 M