Blank of water is a physical change because boiling the water is blank from a liquid to a gas

What is hydroponics

If you made up a solution of NaOH by adding 0.010 mole of solid NaOH to 1.0 liter of distilled water, what would be the pH of the solution? pH =

What is the element [Rn] 7s25f11

Trimix is a general name for a type of gas blend used by technical divers and contains nitrogen, oxygen and helium. In one Trimix blend, the partial pressures of each gas are 55.0 atm oxygen, 90.0 atm nitrogen, and 50.0 atm helium.

Why does the temperature not change during a phase change? There is a change from potential energy to kinetic energy. Changes in potential energy do not result in temperature changes No one really knows.

What volume would 3.01•1023 molecules of oxygen gas occupy at STP?

In most food webs there are many producers, fewer herbivores, and even fewer carnivores. Which statement best explains why there are always fewer carnivores than producers in a food web? A. There is not enough space to illustrate them. B.

Which of Deeandra observation is scientifically testable

A round, three dimensional object is a?

The energy needed to start a chemical reaction is called