Which one of the following elements will combine with chlorine in a 12 ratio to give a formula of XCI2.?

Na

AL

Mg

F

c

what is the term for the spatial region about the nucleus of an atom where there is a high probability of finding an electron with a given energy?

Which type of energy transformation is taking place when natural gas is used to heat water? A. chemical energy into thermal energy B. thermal energy into mechanical energy C. mechanical energy into electromagnetic energy D.

The metric unit of force is the A. nanometer. B. gram. C. newton. D. kilogram.

When aluminum hydroxide (dissolved in water); is mixed with aqueous sulfuric acid (H2SO4) the products are aluminum sulfate (a precipitate) and liquid water

Summarize the effects of shearing, compression, and tension on Earth's crust.

A piece of sodium metal reacts completely with water to produce sodium hydroxide and hydrogen gas. the hydrogen gas generated is collected over water at 25.0 degrees celsius. the volume of the gas is 246 ml measured at 1.00 atm.

The definition that offers the broadest range of substances that can be considered acids is the: - Arrhenius definition - Brønsted-Lowry definition - Lewis definition - Arrhenius-Brønsted-Lowry definition

Determine the number of moles of oxygen in 3.20 moles of sodium hydrogen phosphate.

Phentyfloroform contains 57.54% C, 3.45% H, and 39.01% F. What is its empirical formula?

In a constant pressure calorimeter experiment a student measures a temperature change of 2.5 degrees C. The heat measured was 2.200 kJ. What was the volume of the solution? Assume that Csol=4.18 j/gC