Which element consists of positive ions immersed in a "sea" of mobile electronsa) sulfur

b. nitrogen

c. calcium

d. chlorine?

Calculate the work (kJ) done during a reaction in which the internal volume contracts from 85 L to 12 L against an outside pressure of 2.4 atm.

Identify the reaction type for each generic chemical equation

Where does electromagnetic energy come from?

What makes the Group 1 elements the most reactive metals? They have 8 valence electrons. They have 7 valence electrons. The have no valence electrons. They have 1 valence electron.

When matter changes from one state of matter to another it is called

Which describes the volume of 1 mol of gas at standard temperature and pressure? ER The volume is greater for a larger mass of gas. The volume is the same for any gas. The volume depends on the size of the container.

When studying historical geology, which type of rock provides the most useful evidence for uncovering what occurred? metamorphic igneous basalt igneous granite sedimentary

Calculate the molar solubility of ca (io3) 2 in each solution below. the ksp of calcium iodate is7.1 * 10-7.

At normal temperature and pressure, air has a density of 0.001184 g/mL. What is the mass of air in a room that is 3.07 m by 3.00 m by 3.77 m? Answer in units of kg.

A gas made up of atoms escapes through a pinhole 0.155 times as fast as h2 gas. write the chemical formula of the gas.