A student heats a sample of Copper (II) chloride in a crucible and records the data shown in the table. What is the complete formula and name for the compound before heating? Show your work.

Mass of empty crucible 127.30 g

Mass of crucible + sample before heating: 159.76 g

Mass of crucible + sample after heating: 146.80 g

Which description best characterizes the motion of particles in a solid?

What volume would 2.25 moles of ne has occupy at stp?

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.