A billboard that stands 30 m above the ground has a gravitational potential energy of 175000 j. What is its mass

Is Helium a compound, element, or. mixture

How many grams of kno3 pellets must be dissolved in water in order to prepare 100 ml of a 8 m kno3?

You are troubleshooting an older laptop with a thin-film-transistor liquid-crystal display (LCD TFT) screen that is very dim and flickering. You have determined that the LCD graphics adapter is installed and is functioning properly.

Identify the geometry of the complex ion if the hybridization is d2sp3. linear square planar octahedral trigonal planar tetrahedral

When water is broken down by electrolysis (the use of electricity), the products are a. water and carbon dioxide. b. oxygen and methane. c. hydrogen gas and oxygen gas. d. hydrogen ions and oxygen ions?

For the separation of the unknown mixture, you are instructed to isolate the amine followed by the acid and finally the neutral. Does the order matter? If not, what other orders could be followed?

As ice melts and changes from solid to liquid, A) entropy increases. B) kinetic energy decreases. C) an exothermic reaction occurs. D) the random movement of molecules remains constant.

What volume of 0.480 m koh is needed to react completely with 15.8 ml of 0.150 m h2so4? assume the reaction goes to completion?

Which sample of water contains particles having the highest average kinetic energy?

Use the terms magnetic field and magnetic pole in a sentence