The electronic configuration of an element is 1s22s22p6. How many valence electrons does it have? 2 4 6 8

The law which says that matter is neither produced nor destroyed in a physical or chemical reaction is the law of

the volume of a certain gas is 29.3 L at stp what would be the volume of a gas at 1.39 atm and - 23.0oc?

If 400 j of work is done on an object in 8 seconds how much power does the object experience

What is the last step in the Scientific method?

Lorsque la glace fond, la température de fusion est toujours à 0 degrés

A. 5 kg pizza is sitting on a kitchen counter 1.5 m high. How much potential energy does the pizza have?

Which statements are true? Check all that apply. A. If heat is added to a substance, the temperature increases unless there is a phase change. B. As heat is added to a substance, the temperature stays constant or goes down. C.

What is the formula equation for the reaction between sulfuric acid and dissolved sodium hydroxide if all products and reactants are in the aqueous or liquid phase?

A gas in a container with a fixed volume was originally at a pressure of 316 kPa and a temperature of 154 K What is the new pressure in atm if the temperature is increased to 235 K?

How many moles are in 233 grams of MgSiO3