How to find the mass number of an element?

Can a electron be found in an exact spot within a atom

Why cant you use pure sodium for cooking

Extend E1 Explain why the arrangement, movement and energy of particles change during changes of state.

What is the molar solubility of fe (oh) 3 in pure water? (ksp for fe (oh) 3 is 4.0 x 10-38.) a. 6.5 x 10-7 m b. 4.5 x 10-10 m c. 4.0 x 10-17 m d. 2.0 x 10-10 m e. 3.4 x 10-13 m?

What's the ratio of 80% hydrogen

Students measuring the mass of a rock record 6.759 g, 6.786 g, 6.812 g, and 6.779 g. Which other measurement of the block's mass would be most precise? A. 6.702 g B. 6.781 g C. 6.605 g D. 6.858 g

What two elements make up dihydrogen monoxide?

What did scientists observe using the earliest microscopes

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.

How are electromagnetic different than all other waves