What new information did james chadwick contribute to the understanding of the atom?

What s the difference of a mitochondria and a cloroplats

Tellurium is a metalloid. How many valence electrons does tellurium have?

How many more electrons can fit within the valence shell of a oxygen atom?

When blood is donated, sodium oxalate solution is used to precipitate Ca2+, which triggers clotting. A 122.0-mL sample of blood contains 9.70 * 10-5 g Ca2+/mL. A technologist treats the sample with 100.0 mL of 0.1550 M Na2C2O4.

A student is measuring a sample of sodium bicarbonate on an electronic balance that measures to the thousandth of a gram. The balance displays the following value for the mass of the sample: 23.380 g.

Planet z-34 has a mass equal to 1/3 that of earth, a radius equal to 1/3 that of earth, and an axial spin rate 1/2 that of earth.

Which statements accurately describe mass? Check all that apply.

What was the first particle discovered inside an atom

Calcium and sulfur ionic compound or non ionic?

Which of the following would release the most heat upon cooling from 75°C to 50°C?